EP4347151B1 - Dispositif et procédé de profilage de pièces par formage à froid - Google Patents

Dispositif et procédé de profilage de pièces par formage à froid Download PDF

Info

Publication number
EP4347151B1
EP4347151B1 EP22732951.3A EP22732951A EP4347151B1 EP 4347151 B1 EP4347151 B1 EP 4347151B1 EP 22732951 A EP22732951 A EP 22732951A EP 4347151 B1 EP4347151 B1 EP 4347151B1
Authority
EP
European Patent Office
Prior art keywords
tool
axis
workpiece
tool holder
movement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP22732951.3A
Other languages
German (de)
English (en)
Other versions
EP4347151A1 (fr
Inventor
Daniel Dériaz
Ekrem Kapkin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ernst Grob AG
Original Assignee
Ernst Grob AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ernst Grob AG filed Critical Ernst Grob AG
Publication of EP4347151A1 publication Critical patent/EP4347151A1/fr
Application granted granted Critical
Publication of EP4347151B1 publication Critical patent/EP4347151B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H1/00—Making articles shaped as bodies of revolution
    • B21H1/18—Making articles shaped as bodies of revolution cylinders, e.g. rolled transversely cross-rolling
    • B21H1/20—Making articles shaped as bodies of revolution cylinders, e.g. rolled transversely cross-rolling rolled longitudinally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/08—Bending rods, profiles, or tubes by passing between rollers or through a curved die
    • B21D7/085—Bending rods, profiles, or tubes by passing between rollers or through a curved die by passing through a curved die
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H5/00—Making gear wheels, racks, spline shafts or worms
    • B21H5/02—Making gear wheels, racks, spline shafts or worms with cylindrical outline, e.g. by means of die rolls

Definitions

  • the invention relates to the field of producing profiles, particularly by cold forming, for example in rotationally symmetric solid or hollow parts. It relates to devices and methods according to the generic terms of the patent claims.
  • hollow parts with a profile in a single step by forming an unprofiled sheet metal part using a device that has a plurality of tools distributed over a circumference, which, when the sheet metal part is inserted into the device, engage in the sheet metal part where profile gaps are to be created.
  • a corresponding method for producing an internally and/or externally toothed cup-shaped sheet metal part with teeth extending to the cup center axis is known, for example, from DE102014002971A1 known.
  • a process that allows a profile to be created in a workpiece up to a shoulder projecting outwards is known, for example, from WO 2007/009267 A1 known.
  • a cylindrical, thin-walled hollow part which sits on an externally profiled mandrel, is cold-formed to provide it with a profile running essentially parallel to the longitudinal axis of the hollow part.
  • This is done by suddenly hammering at least one profiling tool onto the hollow part from the outside, radially to the longitudinal axis of the hollow part.
  • the profiling tool is oscillated in a direction perpendicular to the longitudinal axis, i.e., by a radial, linear back and forth movement on the surface of the hollow part.
  • the profiling tool is moved axially relative to the hollow part at a constant radial infeed depth until the desired profile length is reached. Machining of the hollow part can begin at an outwardly projecting shoulder of the hollow part.
  • a further possible object of the invention is to enable profile creation with particularly high surface quality.
  • a further possible object of the invention is to produce profiles of great length, in particular in profiles that require significant material deformation, such as gears with a large module, in particular in solid material.
  • a further possible object of the invention is to enable particularly precise profiling, in particular in solid material and with large profiling lengths.
  • a further possible object of the invention is to enable profile creation with particularly high productivity.
  • a further possible object of the invention is to enable profiling close to a workpiece projection, for example close to an outwardly projecting shoulder of the workpiece to be profiled.
  • a further possible object of the invention is to enable profiling between two profiling limiting structures and up to close to them.
  • At least one of these objects can be achieved by devices and/or methods described below.
  • a tool holder and, with it, a tool held by the tool holder are driven to perform a complex movement comprising at least two components: a revolving movement, for example, along an orbit similar to a planetary axis, and a rotational movement around its own axis. These two movements are synchronized with each other.
  • the revolving movement can be a periodic movement.
  • a corresponding drive device can be provided to generate the rotational movement.
  • the tool holder and thus also the tool can be periodically brought towards a workpiece to be machined and have a forming effect on it and then move away from the workpiece again in order to then approach it again and so on.
  • the tool can be brought into forming engagement with the workpiece once per revolution (or every second or every third revolution).
  • the tool can repeatedly cold-form the workpiece in a novel manner.
  • the tool can have an effective area that repeatedly machines the workpiece in a machining area of the workpiece.
  • a direction of rotation of the tool holder around the rotational axis can, in particular, be opposite to a direction of rotation of the orbital movement.
  • the tool can periodically engage the workpiece (due to the orbital movement) for a short period of time, and within this short period of time, in which the tool (more precisely: the effective area of the tool) is in contact with the workpiece, the tool rotates not only around the tool axis, but also around the axis of rotation of the tool holder, so that (during the said short period of time), in addition to the orbital movement mediated by the tool holder, there is a movement of the tool that may be opposite to the orbital movement.
  • the length of a contact area in which the effective area of the tool is in contact with the workpiece during a forming operation can be shorter than in the method according to the said WO 2005/075125 A1 Furthermore, this is clearly different from the non-hammering, but rolling machining, as for example in the above-mentioned WO 2020/099536 is known.
  • the machining of the workpiece to create the profile consists of a large number of axially offset individual machining steps along the axial profile extension, which only overlap to a small extent.
  • a high surface quality and, above all, a high precision of the Profiling can be achieved in this way. Accordingly, post-processing, as in the case of the procedure according to WO 2007/009267 A1 may be necessary if particularly high demands are placed on the surface quality, can be avoided.
  • the tool holder is always in a desired or predetermined azimuthal orientation when the tool is brought into engagement with the workpiece, for example, always in the same azimuthal orientation. Due to the aforementioned rotational movement, the azimuthal orientation of the tool holder changes during each engagement; over the duration of the engagement, the azimuthal orientation changes in the same way, for example, with each tool engagement.
  • the rotary movement of the tool holder can be synchronized with the rotating movement of the tool holder in such a way that the tool holder passes through the same azimuthal orientations during each of the forming operations.
  • azimuth and azimuthal refer to the axis of rotation of the tool holder, unless otherwise stated.
  • Synchronization enables the effective use of a tool that is mounted for rotation about a tool axis that is different from the aforementioned rotation axis.
  • a tool can be used that has a rotationally symmetrical effective range.
  • the tool can thus be, for example, a rolling roller, as described, for example, in the aforementioned WO 2005/075125 A1 is known.
  • the tool Due to the self-rotation of the tool holder around its axis of rotation, while the tool axis rotates around the axis of rotation, the tool can move away from the workpiece relatively quickly after engagement, so that contact with a workpiece projection, for example a workpiece shoulder, can be avoided, and thus deformation of the workpiece projection by the tool can be avoided.
  • a workpiece projection for example a workpiece shoulder
  • an axial feed of the workpiece can be provided.
  • the rotary motion can, for example, occur throughout the entire rotation or continuously. This allows for good synchronization of the rotary motion of the tool holder with the rotary motion of the tool holder.
  • the synchronization of the two movements can be achieved mechanically.
  • a mechanical synchronization device can be provided for this synchronization.
  • the aforementioned movements can also be synchronized with each other in other ways, for example, electronically, i.e., by an electronic synchronization device.
  • the synchronization device also referred to below as the second synchronization device, comprises a planetary gear.
  • it may comprise a ring gear and a planetary gear running within the ring gear.
  • the planetary gear may be part of the tool holder or at least be rigidly connected to the tool holder or rotate with the rotational movement of the tool holder about the rotational axis and also participate in the aforementioned orbital movement.
  • the axis of the planetary gear may be coaxial with the rotational axis.
  • the planetary gear can also drive the tool holder to rotate about its axis of rotation.
  • the drive device mentioned above for generating the rotational movement of the tool holder about its axis of rotation can therefore comprise a planetary gear.
  • a planetary gear can be provided which simultaneously generates the rotary movement of the tool holder about its axis of rotation and synchronizes this rotary movement with the rotating movement of the tool holder.
  • the mentioned planetary orbital motion can be imparted to the tool holder by a recirculating body.
  • the tool holder can be
  • the revolving body can be mounted, in particular, can be mounted so as to be rotatable about its axis of rotation.
  • the revolving body can, for example, rotate about a revolving body axis, and the axis of rotation of the tool holder is spaced from the revolving body axis, so that the axis of rotation performs a revolving movement essentially along a circular path.
  • This orbital movement can, if the aforementioned planetary gear is provided, generate the rotational movement of the workpiece holder, mediated by the planetary gear.
  • the orbital axis can be aligned coaxially with an axis of the ring gear.
  • the aforementioned drive device for generating the rotational movement of the tool holder about its rotational axis can comprise the orbital body and a planetary gear.
  • a drive shaft for driving the orbital body for its rotation about its orbital body axis can also be part of the aforementioned drive device.
  • a drive shaft for driving the revolving body to rotate about its revolving body axis may, in addition to the revolving body, also belong to a drive device for generating a movement of the revolving body.
  • the radial feed can be realized by moving the revolving body or in particular a revolving body axis of the revolving body towards the longitudinal axis, i.e. in this sense experiencing a radial feed.
  • the revolving body can be mounted in a profiling head, in particular, it can be mounted in the profiling head so as to be rotatable about its revolving body axis, and the profiling head can be driven to move toward the longitudinal axis.
  • the revolving body can, while rotating about its revolving body axis, can be moved toward the longitudinal axis by means of a drive for radial feed. And the recirculating body axis can be moved toward the longitudinal axis accordingly.
  • the described complex movement of the tool holder (and the tool) can have an additional component, namely the described movement extending radially to the longitudinal axis (radial feed movement).
  • the rotational axis of the tool holder can accordingly perform a movement resulting from a circular movement superimposed on a linear movement of the circle center, in particular, wherein the linear movement takes place in a plane defined by the circular movement.
  • a rotational movement of the workpiece or the workpiece holder about the longitudinal axis can be provided, for example generated by means of a corresponding drive device, for example by means of a torque motor, so that the workpiece can be machined by the tool at various positions distributed over the circumference of the workpiece.
  • different profile gaps of the profiling to be created can be created by means of the tool.
  • several tools can be provided so that not necessarily a single tool (or each of the tools) contributes to the formation of all profile gaps of the profiling. Nevertheless, it can be provided that the tool engages with the workpiece at every position along the circumference of the workpiece at which a profile gap of the profiling is to be created, and thus contributes to the formation of all profile gaps of the profiling.
  • Said rotational movement may have a varying rotational speed, in particular a rotational speed that varies periodically at least in sections.
  • Said rotational movement may, for example, be an intermittent rotation.
  • the rotational speed of the rotational movement of the workpiece or of the workpiece holder has successive phases of relatively higher rotational speed and relatively lower rotational speed.
  • the machining of the workpiece by the tool can in particular during phases of relatively lower rotational speed. The slower the workpiece rotates during tool engagement, or the longer the workpiece rotates slowly or remains stationary during phases of relatively lower rotational speed, the better the precision of the final profile can be achieved.
  • the tool machines the workpiece during phases of the rotational movement in which the workpiece is stationary.
  • the tool machines the workpiece during phases of rotational standstill during intermittent rotation of the workpiece (rotational standstill has a rotational speed of zero).
  • Synchronization of the rotational movement of the workpiece holder with the rotating movement of the tool holder can be provided. This ensures that the workpiece is always machined at the same positions along the circumference of the workpiece.
  • the first synchronization device can, for example, synchronize the drive for the rotation of the workpiece or workpiece holder with the drive shaft for driving the recirculating body for its rotation about its recirculating body axis.
  • the method can therefore in particular be a method for producing a profiled body provided with a profile by cold forming a workpiece, wherein the workpiece can have a longitudinal axis and, in a processing area, an outer surface into which the profile is to be introduced.
  • the outer surface can extend along the longitudinal axis.
  • the outer surface can be concentric with the longitudinal axis, for example, conical or cylindrical.
  • Other outer surface shapes, such as polygonal, are also possible, for example, in prismatic machining areas.
  • the workpiece rotates around its longitudinal axis.
  • the workpiece particularly the outer surface mentioned above, is machined by a tool in a number of successive forming operations, each of which involves the tool, or more precisely, an active area of the tool, coming into contact with the machining area.
  • the corresponding tool movement has already been described above.
  • the tool is held by a tool holder, and the tool holder is mounted in a revolving body for rotation about a rotational axis of the tool holder and is driven to rotate about its rotational axis.
  • the tool holder is driven by the revolving body for revolving motion; in particular, the tool holder is driven by the revolving body for movement along an orbital path.
  • the tool is mounted in the tool holder so that it can rotate about a tool axis, whereby the tool axis is not identical to the rotation axis of the tool holder.
  • the tool axis can be spaced from the rotational axis of the tool holder.
  • the two axes can, for example, be aligned parallel to each other.
  • "spaced" means that the axes, mathematically understood as straight lines, do not intersect.
  • the tool movement near the workpiece can be described as a movement along a hypocycloid, for example an ellipse, and this in turn can be approximately described by a circular movement near the engagement, whereby the diameter of this circular movement can be significantly smaller than the diameter of the orbital movement.
  • the tool can be freely rotatable around the tool axis. This means that the tool can be set in rotation around the tool axis by engaging the workpiece.
  • the tool can have an effective range that is rotationally symmetrical with respect to the tool axis. This allows the result of an intervention to be independent of the rotational orientation of the tool with respect to the tool axis during the intervention.
  • the tool can, for example, be designed as a rolling roller.
  • the rotational movement of the workpiece is synchronized with the rotating movement of the tool holder in such a way that several of the forming operations take place at different positions distributed over the circumference of the workpiece.
  • these positions can be positions at which profile gaps are to be created. If the process involves internal profiling of the workpiece is generated, the positions can be those positions that lie between adjacent profile gaps of the internal profiling to be created.
  • the rotary movement of the tool holder is synchronized with the rotating movement of the tool holder in such a way that the tool passes through the same azimuthal orientations during each of the forming operations.
  • a profiling can be created, for example, which extends close to a profiling limitation structure, for example to a workpiece projection.
  • a relative movement of the workpiece relative to the rotating body takes place parallel to the longitudinal axis.
  • the rotating body as described above, can have a rotating body axis around which it rotates, and a relative movement of the workpiece relative to the rotating body axis takes place parallel to the longitudinal axis.
  • the workpiece can be driven to move parallel to the longitudinal axis (axial feed).
  • An axial feed can be used to ensure that the tool interventions take place at different axial positions (relative to the longitudinal axis) during the process.
  • a workpiece holder holding the workpiece can be driven by a drive in a direction parallel to the longitudinal axis.
  • the method can also be regarded as a method for profiling a workpiece and/or as a method for creating a profiling in a workpiece.
  • the workpiece can be a hollow part, in particular a rotationally symmetrical, for example cylindrical hollow part.
  • the workpiece can be a solid part, in particular a rotationally symmetrical, for example cylindrical, solid part.
  • the workpiece can be a metal workpiece.
  • the machining area can be an area in which the profiling is to be introduced, i.e., an area to be profiled.
  • the machining area can be an axially limited section of the workpiece, for example, the end piece of a tubular or rod-shaped workpiece.
  • the workpiece may have a second region adjacent to the machining region.
  • This second region may have a profiling limitation structure adjacent to the machining region, for example, a workpiece projection that has a radial extent around the longitudinal axis, at least in one (azimuthal) angular range, that is greater than a radial extent of the outer surface in the machining region where it adjoins the workpiece projection.
  • the profiling limitation structure may be a profiling obstacle, for example, a workpiece shoulder.
  • a profiling boundary structure can form an end or a boundary of the profiling.
  • the outer surface in the machining area can be rotationally symmetrical, for example, cylindrical or conical.
  • the outer surface can also be designed differently, for example, polygonal.
  • the profiling can be an external profiling. This can be created in a hollow part or in a solid part.
  • an external profiling in the case of hollow parts, it is also possible to create an external and an internal profiling simultaneously, for example, if the workpiece is intended to be machined on a externally profiled mandrel.
  • internal gearing in a hollow part without simultaneously creating external gearing.
  • the workpiece can also be seated on an externally profiled mandrel in its machining area.
  • the profiling can have a multitude of profile gaps (recesses in the workpiece in the machining area) distributed around the circumference, for example, evenly distributed around the circumference.
  • profile gaps can also be unevenly distributed around the circumference.
  • the rotating movement of the tool holder can be a continuous movement and can in particular take place at a constant speed.
  • the rotational movement of the tool holder can be a continuous movement and can in particular occur at a constant rotational speed.
  • these two speeds can have a temporally constant relationship to each other.
  • the orbiting movement can be a circular movement.
  • a trajectory (movement path) that describes the movement of the tool holder can result in particular from a superposition of the circumferential movement with a (radial) movement perpendicular to the longitudinal axis.
  • the revolving body rotates around a revolving body axis. This can generate the revolving movement of the tool holder.
  • the revolving movement of the tool holder can take place in a plane perpendicular to the revolving body axis.
  • the orbiting body axis and the rotation axis can be aligned parallel to each other.
  • a direction of rotation of the rotary movement of the tool holder (around the axis of rotation) can, for example, be opposite to a direction of rotation of the orbital movement (around the orbital body axis) (opposite direction of rotation).
  • the rotating movement of the tool holder can take place in a plane to which the longitudinal axis is aligned parallel, and/or a plane perpendicular to the tool axis is perpendicular to a plane perpendicular to the longitudinal axis.
  • This can be provided, in particular, to create a profile running parallel to the longitudinal axis, for example, a spur gear, especially if the rotational movement of the workpiece or the workpiece holder is slowed down during engagement or an intermittent rotational movement is provided.
  • a different orientation can be provided. For example, it can then be provided that a plane perpendicular to the tool axis encloses a non-zero pivot angle with the longitudinal axis. This pivot angle can be selected, for example, depending on the helix angle of the profiling or the rotational speed of the workpiece or workpiece holder during the engagement.
  • the planetary gear can comprise a ring gear and a planetary gear rotating within the ring gear.
  • the planetary gear can be part of the tool holder, and can perform the rotary motion together with the tool holder.
  • the position of the planetary gear can be fixed relative to the position of the tool axis.
  • the ring gear can be fixed in a profiling head in which the circulating body is mounted, in particular rotatably mounted.
  • the profiling head can be operatively connected to a drive, for example a linear drive, for radial feed.
  • Two profiling heads can also be provided, each with at least one tool, for example, with a first tool in a first profiling head and a second tool in a second profiling head. These can be arranged opposite each other with respect to the longitudinal axis, for example, mirror-imaged with respect to a plane containing the longitudinal axis. Both tools can be designed, for example, as rolling rollers.
  • the two profiling heads in particular including the device parts provided in them such as the revolving body and ring gear, can be designed identically or manufactured according to the same specifications, the movements of the device parts being mirror-inverted with respect to a plane containing the longitudinal axis.
  • the respective orbital movements of the two tools mentioned may be different from one another, namely, in particular, they may be mirror images of one another with respect to a plane containing the longitudinal axis.
  • the respective orbital movements of the two tools mentioned may take place in one and the same plane.
  • the rotating movement of the first tool can thus be combined with the rotating movement of the second tool (the second Profiling head) must be synchronized so that the forming operations of the two tools mentioned take place simultaneously.
  • Multiple tools may also be provided for other reasons and at other locations, for example, within the same profiling head. These tools may, for example, be of similar design.
  • the tools may, for example, be rolling rolls, in particular rolling rolls of similar design. If multiple tool holders are provided, they may also be of similar design.
  • a single tool holder can hold two or more tools, for example in such a way that their tool axes are evenly distributed azimuthally with respect to the rotation axis of the tool holder.
  • these tools can alternately engage the workpiece during successive cycles to form it.
  • two or more tool holders can be provided, each holding (at least) one tool.
  • the orbital movements of these tool holders can, for example, describe the same orbital path; and they can be evenly distributed along the orbital path.
  • these tool holders can be evenly distributed azimuthally with respect to the orbiting body axis.
  • one intervention in the workpiece can take place per rotation of the revolving body per tool holder.
  • N indicates the number of tool holders with (at least) one tool each.
  • N indicates the number of tool holders with n tools each and two identical (or mirror-image) stamping heads are provided, the workpiece can be machined with 2 ⁇ N ⁇ n tools.
  • the tools or at least their effective areas can, for example, be manufactured according to the same specifications.
  • the tool can be a rolling roller, as described.
  • the tool in its effective range, can have a shape which, in a section along a cutting plane, corresponds to the negative of the shape of a profile gap of the generating profile, wherein this cutting plane runs through the effective range and contains the tool axis.
  • a plane perpendicular to the tool axis is aligned perpendicularly to a plane perpendicular to the longitudinal axis, it can be provided that, in a section perpendicular to the longitudinal axis through the effective range during an intervention, the tool has a shape which corresponds to the negative of the shape of a profile gap of the generating profile.
  • profiling includes or is an external profiling.
  • an internal profiling can also be created simultaneously with the external profiling—or not.
  • the effective range can be rotationally symmetrical with respect to the tool axis.
  • the effective range can be defined as the area of the tool in which the tool comes into (direct) contact with the workpiece. However, it can be provided that only a portion of the effective range comes into (direct) contact with the workpiece during each engagement. For a tool mounted so it can rotate freely around the tool axis, it is essentially random which portion of the effective range comes into (direct) contact with the workpiece during an engagement.
  • the tool axis can rotate with the associated tool holder. And if a planetary gear is provided that is part of the tool holder, the relative position of the tool axis to the planetary gear can also be constant.
  • the tool can be part of a tool insert of the tool holder, which can be fixed to at least one other part of the tool holder.
  • the tool holder may have a pivot bearing that defines a tool axis different from the rotational axis of the tool holder, for receiving the tool; specifically, such that the tool is rotatable about the tool axis.
  • the tool may be freely rotatable about the tool axis.
  • the device has the tool mounted in the pivot bearing so that it can rotate about the tool axis.
  • the drive device for generating a rotational movement of the tool holder about its rotational axis can be at least partially identical to the second synchronization device.
  • the planetary gear mechanism already described can, on the one hand, be part of this drive device by converting the movement of the revolving body into the rotational movement of the tool holder, and, on the other hand, it can be part of the first synchronization device (or correspond to the first synchronization device) by coupling the rotational movement of the tool holder to the revolving movement of the tool holder.
  • the drive device for generating a movement of the circulating body can, for example, comprise a drive spindle. This can also be part of the Drive device for generating a rotary movement of the tool holder about its axis of rotation, e.g. mediated by the planetary gear.
  • the revolving body can be mounted in a profiling head, in particular, mounted for rotation. This can be driven by a drive toward the longitudinal axis for the radial feed movement.
  • the drive can, for example, be a drive for a movement of the profiling head perpendicular to the longitudinal axis.
  • the device can include a drive device for generating a movement of the workpiece holder parallel to the longitudinal axis. This allows tool engagement, for example, to take place successively at positions increasingly farther from one end of the workpiece. A progressive formation of the profile parallel to the longitudinal axis can be enabled.
  • the first synchronization device and the second synchronization device may be one and the same synchronization device or may be completely or partially different from each other.
  • the first synchronization device can be configured to ensure that a rotational frequency of the rotating movement of the first tool holder is in a fixed (time-unchanged) relationship with a speed of the rotational movement of the workpiece.
  • the second synchronization device can be configured to ensure that a rotational frequency of the rotating movement of the first tool holder is in a fixed (time-unchanged) relationship with a speed of the rotary movement of the tool holder.
  • the device can be configured so that the cold forming of the workpiece can be performed through a plurality of successive forming operations. These operations can be performed by a single tool or by multiple tools.
  • the first synchronization device can be configured to synchronize the rotational movement of the workpiece holder with the rotating movement of the tool holder in such a way that several of the forming interventions take place at different positions distributed over a circumference of the workpiece.
  • the device can be configured such that, in each of the forming operations, a tool comes into contact with the machining area.
  • the device can be designed such that, in each of the forming operations, the effective area (more precisely: a section of the effective area) of a tool comes into contact with the machining area.
  • the respective tool (more precisely: its effective area or section of the effective area) can exert a hammering action on the outer surface (in the machining area).
  • a tool can exert a cold-forming action on the machining area.
  • the second synchronization device can be configured to synchronize the rotary movement of the tool holder with the rotating movement of the tool holder such that the tool axis passes through the same (small) range of azimuthal positions (relative to the rotary axis) in each of the forming interventions of the tool.
  • the second synchronization device is configured to synchronize the rotary movement of the at least one tool holder with the rotating movement of the respective tool holder in such a way that each of the tool axes passes through the same (small) range of azimuthal positions (relative to the rotary axis) in each of the forming interventions of the corresponding tool.
  • the first synchronization device can, for example, be configured such that an N-th of a period of the orbital movement is equal to an integer multiple of an r-th of the period of the rotational movement of the workpiece.
  • the interventions take place precisely at the positions along the circumference of the workpiece where profile gaps are to be created.
  • the first synchronization device can, for example, be configured such that an N-th of a period of the orbital movement is equal to an r-th of the period of the rotational movement of the workpiece.
  • the interventions take place at adjacent profile gap positions.
  • the invention includes devices with features that correspond to the features of described methods and, conversely, also methods with features that correspond to the features of described devices.
  • Fig. 1 shows a device 100 for carrying out the method for cold forming profiling of a workpiece 1.
  • the workpiece 1 is held in a workpiece holder 10, which is in Fig. 1 is symbolically represented and has a longitudinal axis Z, which is also a longitudinal axis of the workpiece 1.
  • the workpiece 1 has a machining area 11 which is rotationally symmetrical with respect to the longitudinal axis Z and has an outer surface 11a, which is, for example, cylindrical in shape and in which a profiling is to be introduced, and which is adjoined by a second area 12 in which the workpiece 1 has a larger diameter than in the machining area 11.
  • a profiling limitation structure designed as a workpiece shoulder 13 is formed between the areas 11 and 12.
  • a Fig. 1 symbolically represented circulating body 8 is provided, which executes a movement R8', namely by rotating in the example shown by a Fig. 1 not shown, rotates and thus performs the rotation R8'.
  • a tool holder 5 is mounted in the revolving body 8, which, due to the movement R8' of the revolving body 8, performs a revolving movement R8 along an orbit U.
  • the tool holder 5 has a rotational axis W around which it performs a rotational movement R5.
  • This rotational movement R5 can, for example, be generated directly by a drive (rotational drive) or can be derived from the movement R8' of the revolving body 8, for example by mechanical means, for example Example using a planetary gear, as will be described in more detail below.
  • the tool holder 5 holds at least one tool 2, which has an active area 21 in which it comes into cold-forming contact with the workpiece 1, specifically by performing a movement during engagement with the workpiece 1, which movement will be described in more detail below.
  • the tool 2 is mounted in the tool holder 5 so as to be rotatable about the tool axis Q, in particular so as to be freely rotatable.
  • the tool axis Q is not identical to the rotational axis W of the tool holder 5. For example, it can be aligned parallel to it and spaced apart from it.
  • the tool 2 can have a rotationally symmetrical effective range (with respect to the tool axis Q).
  • the tool 2 can, for example, be designed as a rolling roller.
  • profile gaps are created in the workpiece 1, whereby the tool 2 carries out a plurality of interventions per profile gap.
  • the workpiece 1 can be driven by means of the workpiece holder 10 about the longitudinal axis Z to perform a rotational movement R1, in particular wherein the rotational movement R1 can be an intermittent rotation, so that the tool engagement can take place in each phase of the rotational standstill of the workpiece 1.
  • a drive for an axial feed of the workpiece 1 parallel to the longitudinal axis Z can be provided. This can cause the profiling to progress along the longitudinal axis Z.
  • Fig. 1 Active connections for the purpose of drive are shown by dashed lines and active connections for the purpose of synchronization (which can be implemented mechanically and/or electronically) are shown by thick dotted lines.
  • a drive device A1 is provided for generating a rotational movement R1 of the workpiece holder 10, for example a torque motor or another rotational drive, and a drive device A8 for generating the movement R8' of the circulating body 8.
  • the drive device A8 can, for example, have a drive shaft.
  • a drive device A5 is also provided for generating the rotational movement R5 of the tool holder 5 about its rotational axis W, as already stated above.
  • the rotational axis W is aligned parallel to the revolving body axis.
  • the revolving movement R8 of the tool holder occurs in a plane to which these axes are perpendicular. In the example shown, the longitudinal axis is aligned parallel to this plane.
  • the tool axis Q can be aligned parallel to the rotation axis W.
  • the workpiece rotation R1 and the circulating movement R8 are synchronized with each other by means of a first synchronization device S1, for example by synchronizing the workpiece rotation R1 and the movement R8' of the circulating body 8 with each other by means of the first synchronization device S1.
  • synchronization can consist in the two movements (R1 and R8 or R8') having a temporally constant ratio of their revolution times.
  • This synchronization can be achieved, for example, using an electronic synchronization device S1.
  • other synchronization devices such as mechanical ones, are also conceivable.
  • a second synchronization device S5 is provided, by means of which the rotary movement R5 of the tool holder 5 and the rotating movement R8 of the tool holder 5 are synchronized with each other.
  • This can be achieved, for example, by means of an electronic synchronization device, which can then also be identical to the first synchronization device S1.
  • this synchronization is realized mechanically, namely by means of the planetary gear mechanism already mentioned.
  • the drive device A5 can be at least partially identical to the second synchronization device S5, namely in that the planetary gear on the one hand generates the rotary movement R5 and on the other hand effects the synchronization between the rotary movement R5 and the orbital movement R8.
  • the synchronization achieved by means of the second synchronization device S5 can ensure that the tool axis Q assumes the same azimuthal orientation (relative to the rotational axis W of the tool holder 5) during each engagement with the workpiece 1. This can be advantageous, for example, when the workpiece 1, as in Fig. 1 shown has an outwardly projecting workpiece shoulder 13 and the profiling is to be carried out close to this. This is shown in Figs. 2A to 2D explained.
  • Fig. 2A illustrates the situation shortly before the start of an operation, where the tool 2 shortly afterwards comes into contact with the workpiece 1.
  • the azimuthal angle ⁇ in the illustrated example is approximately 317°, corresponding to -43°.
  • Fig. 2B illustrates the situation approximately in the middle of the intervention.
  • the azimuthal angle ⁇ in the illustrated example is a few degrees.
  • Fig. 2C illustrates the situation shortly after the end of an operation. Tool 2 is no longer in contact with workpiece 1.
  • the azimuthal angle ⁇ is approximately 40° in the illustrated example.
  • Fig. 2D illustrates the situation even later after the end of an operation. Shortly thereafter, tool 2 moves over the workpiece shoulder 13.
  • the azimuthal angle ⁇ in the illustrated example is a good 70°.
  • the second synchronization device S5 By means of the second synchronization device S5, it can be ensured, for example, that during each revolution the tool 2 only comes into contact with the workpiece 1 in a small azimuthal angle range, which here is, for example, close to 0°, and thus forms it by hammering.
  • workpiece 1 could have a further workpiece projection at the end shown on the right, instead of ending there (in Fig. 2A indicated by dotted lines).
  • Fig. 3 shows a tool holder 5 with tool 2, in a section through its rotational axis W and through the tool axis Q. It has (optionally) two planetary gears 45, whose axes are coaxial with the rotational axis W, and two bearing areas 2L for the rotatable bearing in the recirculating body 8 (see Fig. 1 ).
  • the tool holder 5 can be formed in one piece or, as shown, in several parts.
  • the tool holder 5 can, for example, have a tool insert 2e (in Fig. 3 hatched for better visibility), in which the tool 2 is mounted rotatably about the tool axis Q.
  • a rolling roller as tool 2 can be mounted there so as to be freely rotatable about the tool axis Q.
  • the tool insert 2e can have a pivot bearing for this purpose (not separately shown in the figure).
  • the tool insert 2e can be fixedly connected to at least one other part of the tool holder 5, for example, by being screwed thereto.
  • the tool axis Q can be fixedly positioned relative to the planetary gears 45 in the tool holder 5.
  • Fig. 4 illustrates in a view of a section perpendicular to the axis of rotation W a detail of a planetary gear 40 of the device, for example comprising planetary gears 45, as they are in the tool holder 5 according to Fig. 3 are integrated, of which Fig. 4 but only one is visible.
  • the planetary gear 40 has a ring gear 41 with an axis 42 and can also have a second, Fig. 4 not shown ring gear in which the second planet gear of the tool holder 5 runs.
  • the axis 46 of the planetary gear 45 is coaxial with the rotation axis W.
  • the orbiting body axis V (corresponding to the axis of the orbiting movement of the tool holder) is coaxial with the axis 42 of the ring gear 41.
  • the planetary gear 40 By appropriately dimensioning the planetary gear 40, it can be ensured, for example, that the tool axes Q are at a specific position along the orbit U (see Fig. 1 ) of the tool holder 5, for example where the engagement in the workpiece 1 is to end, or where the engagement in the workpiece 1 is to begin, has the same azimuthal position (relative to the axis of rotation) during each revolution.
  • the planetary gear can also be realized with no more than one ring gear and no more than one planet gear.
  • the mechanical requirements on the workpiece holder 10 can be greatly reduced if two tool interventions take place for each tool intervention, namely at opposite points of the workpiece 1 with respect to the longitudinal axis, and in particular also axially (with respect to the longitudinal axis Z) at the same position.
  • Fig. 5 illustrates a detail of a device 100 with two profiling heads 3a, 3b, with a radial infeed and an axial feed also symbolized.
  • the recirculating bodies including at least one tool holder each) and, if provided, the planetary gears can be mounted in the profiling heads 3a, 3b.
  • the profiling heads 3a, 3b or the parts mounted in them can be essentially of the same type, but mirror-image in terms of movements.
  • the workpiece 1 symbolically shown can thus be machined in a mirror image by two tools opposite each other with respect to the longitudinal axis Z.
  • the movements of the two revolving bodies can be synchronized with each other or result from one and the same movement, for example, from the same rotary drive.
  • One or more ring gears can be fixed in each of the profiling heads.
  • the workpiece can be moved axially, i.e., in a direction parallel to the longitudinal axis Z, to enable progressive profiling along the longitudinal axis Z through a plurality of successive tool engagements in the workpiece. This naturally also applies if only a single profiling head is provided, or if the tool engagements occur only from one side, or if no more than one tool is used at a time.
  • An AZ drive for axial feed can be provided for this purpose.
  • the tools can be advanced radially, i.e., in a direction perpendicular to the longitudinal axis Z, since the profile gaps that are being created become increasingly deeper with the increasing number of cuts. This also applies if only a single profiling head is provided, or if tool engagement occurs from only one side, or if no more than one tool is used at a time.
  • Such a radial feed movement is in Fig. 5 symbolized by the open arrows labeled L2. It can occur along an axis perpendicular to the longitudinal axis and parallel to a plane described by the rotating motion of the tool holder.
  • a drive A2 can be provided for radial feed.
  • Figs. 6A-6C Due to the radial infeed, the trajectory or the movement path of the tool holder results from a superposition of the rotating movement U with the (linear) radial infeed movement, as shown in Figs. 6A-6C is illustrated schematically.
  • Fig. 6A symbolizes an orbit U of a tool holder.
  • Fig. 6B symbolizes a radial infeed movement L2.
  • Fig. 6C symbolizes a trajectory T of a tool holder, which results from the superposition of the circular movement U and the radial infeed L2. In reality, the distances between the approximately circular trajectory components are much smaller than in Fig. 6C shown for the sake of clarity.
  • Fig. 7 illustrates a detail of a device 100 with two profiling heads, each having three tool holders 5a1, 5a2, 5a3 or 5b1, 5b2, 5b3 with two tools 2a1, 2a1' or 2a2, 2a2' etc.
  • Fig. 7 illustrates that by means of the method described in this text, profilings can also be created between two profiling limiting structures, for example between the two workpiece shoulders 13, 13', whereby the profilings can each reach close to the profiling limiting structures.
  • Fig. 8 shows a section perpendicular to the longitudinal axis Z of a profile body 1p having a profile P that can be produced by means of the described method or by means of the described device.
  • the profile has a plurality of profile gaps pl.
  • Each of these profile gaps pl is created by the sequential execution of a plurality of interventions by one or more tools 2, each of which has an effective area 21, which in the section according to Fig. 8 has a shape which essentially corresponds to the shape of a profile gap pl to be created.
  • the profile body 1p is a hollow part that sits on an externally profiled mandrel 6 and has an outwardly projecting shoulder 13.
  • the process can produce not only an external profile but also an internal profile at the same time.
  • an external profiling can be created without simultaneously creating an internal profiling.
  • Fig. 9 shows in a section perpendicular to the longitudinal axis a detail of a workpiece 1, which sits on an externally profiled mandrel 6 and is about to be machined by means of a tool 2 in the manner described. By machining Material from workpiece 1 is then formed into profile gaps 6p. Tool 2 has a flat effective area.
  • Fig. 10 shows, in a section containing the longitudinal axis Z, by way of example, that an outer surface of a machining area 11 of a workpiece 1 does not have to be cylindrical, but can, for example, be conical, as shown.
  • Fig. 11 shows in a section perpendicular to the longitudinal axis Z, using an example, that an outer surface 11a of a machining area 11 of a workpiece 1 does not necessarily have to be rotationally symmetrical, but can, for example, be polygonal, as shown. Shown in Fig. 11 In this case, the outer surface 11a has six partial surfaces; however, it can be provided that the outer surface 11a has many more partial surfaces. In the associated machining area, the workpiece 1 can, for example, be prismatic.
  • Fig. 12 shows an example of a workpiece 1 or a profile body 1p with two axially spaced profiling delimitation structures 13, 13' that extend radially outward.
  • Profiling limit structures may also be directed radially inward relative to the adjacent portion of the machining area.
  • Fig. 13 shows an example in which the profiling limiting structures 13 at one end of the machining area 11 are directed radially inwards and the profiling limiting structures 13' at the other end of the machining area 11 are directed radially outwards.
  • Fig. 14 Using an example, it illustrates that a machining area 11 does not necessarily have to be delimited on one or two sides by profiling delimitation structures. A profile body is shown in which both ends of the machining area 11 are not adjacent to profiling delimitation structures.
  • Fig. 15 illustrates by way of example that a profiling limitation structure 13 of a workpiece 1 is not necessarily rotationally symmetrical.
  • a plurality of radially outwardly projecting workpiece projections are provided, which are located at different azimuthal positions.
  • Fig. 16 illustrates, in a section perpendicular to the longitudinal axis L, a workpiece 1 or a profile body 1p having a profile whose profile gaps 1p are azimuthally unevenly distributed.
  • profile gaps evenly distributed over the circumference are preferred for many applications, there are applications for which an azimuthally irregular arrangement of the profile gaps pl is advantageous.
  • a single workpiece can have two or more different machining areas, which can, for example, be axially spaced from one another, and which can each be provided with a profile in the manner described in this text.
  • a plane perpendicular to the tool axis Q contains the longitudinal axis Z.
  • this option can be particularly useful, for example, when a spur gear is to be produced and the workpiece is stationary or rotating only slowly during the cutting operation.
  • a plane perpendicular to the tool axis includes a swivel angle ⁇ (not equal to zero degrees) with the longitudinal axis, as in Fig. 17
  • ⁇ swivel angle
  • the (swivelled) tool axis Q' is swivelled relative to a vertically aligned tool axis Q in a direction that is parallel to the longitudinal axis Z; in other words: it is swivelled in such a way that the non-swivelled Tool axis Q together with the pivoted tool axis Q' lies in a plane that is parallel to the longitudinal axis Z.
  • This plane is in Fig. 17 the drawing plane.
  • a plane perpendicular to the pivoted tool axis Q' is Fig.
  • the profiling head can be swiveled so that the tool axis Q, the rotation axis W (of the tool holder) and the revolving body axis V are swiveled simultaneously.
  • the tool axis Q, the rotation axis W, and the revolving body axis V are parallel to each other, they can all be pivoted by the same pivot angle ⁇ , for example. Then, due to the mutual parallelisms, the plane perpendicular to the tool axis Q is also perpendicular to the rotation axis W and the revolving body axis V.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Turning (AREA)

Claims (15)

  1. Procédé de fabrication d'un corps profilé (1p) pourvu d'un profilage (P) par formage à froid d'une pièce (1) comportant un axe longitudinal (Z) et, dans une zone de traitement (11), une surface extérieure (11a), dans laquelle le profilage (P) doit être incorporé, cependant la pièce (1) effectue un mouvement de rotation (R1) autour de l'axe longitudinal (Z) et est traitée par un premier outil (2) dans une multitude de interventions de forme successives au cours desquelles le premier outil (2) vient en contact avec la zone de traitement (11), dans laquelle le premier outil (2) est maintenu par un premier porte-outil (5 ; 5a1), et dans lequel le premier porte-outil (5 ; 5a1,. ...)
    - est, dans un corps orbital (8), monté de manière rotative autour d'un axe de rotation (W) du premier porte-outil (5 ; 5a1,...) et est entraîné à effectuer un mouvement de rotation (R5) autour de l'axe de rotation (W), le terme azimutal utilisé ci-après étant défini par l'axe de rotation (W) ; et
    - est entraîné à effectuer un mouvement orbital (R8) par le corps orbital (8) ; et
    dans lequel
    - le mouvement de rotation (R1) de la pièce (1) est synchronisé avec le mouvement orbital (R8) du premier porte-outil (5 ; 5a1,...) ; et
    - le mouvement de rotation (R5) du premier porte-outil (5a1,...) est synchronisé avec le mouvement orbital (R8) du premier porte-outil (5a1,...) ;
    caractérisé en ce que le premier outil (2) est monté de manière rotative, en particulier monté de manière librement rotative rotatif, autour d'un premier axe d'outil (Q) qui est différent de l'axe de rotation (W), en particulier dans lequel le premier axe d'outil (Q) est distant de l'axe de rotation (W).
  2. Procédé selon la revendication 1, dans lequel
    - le mouvement de rotation (R1) de la pièce (1) est synchronisé avec le mouvement orbital (R8) du premier porte-outil (5 ; 5a1,...) de telle sorte que plusieurs des interventions de forme ont lieu à différentes positions distribuées sur une circonférence de la pièce (1); et
    - le mouvement de rotation (R5) du premier porte-outil (5 ; 5a1, ...) est synchronisé avec le mouvement orbital (R8) du premier porte-outil (5 ; 5a1, ...) de telle sorte que le premier outil (2) passe par les mêmes orientations azimutales (φ) lors de chacune des interventions de forme. (φ).
  3. Procédé selon la revendication 1 ou la revendication 2, dans lequel le corps orbital (8) effectue une rotation (R8') autour d'un axe de corps orbital (V), et dans lequel l'axe de corps orbital (V) et l'axe de rotation (W) sont alignés parallèlement l'un à l'autre.
  4. Procédé selon l'une des revendications 1 à 3, dans lequel le premier outil (2) comprend une zone active (21) qui est rotativement symétrique par rapport à l'axe de l'outil (Q), en particulier dans lequel le premier outil (2) est réalisé sous forme de rouleau.
  5. Procédé selon l'une des revendications 1 à 4, dans lequel le mouvement de rotation (R5) du porte-outil (5 ; 5a1,...) est synchronisé avec le mouvement orbital (R8) du premier porte-outil (5 ; 5a1,...) au moyen d'un train épicycloïdal (40).
  6. Procédé selon la revendication 5, dans lequel le train épicycloïdal (40) comprend une couronne (41) et une roue planétaire (45) qui tourne dans la couronne (41), la roue planétaire (45) faisant partie du premier porte-outil (5 ; 5a1,...) et exécutant avec lui le mouvement de rotation (R5).
  7. Procédé selon l'une des revendications 1 à 6, dans lequel la pièce est traitée simultanément par un deuxième outil (2b) dans une multitude de interventions de forme exécutées successivement dans lesquelles le deuxième outil (2b) vient en contact avec la pièce (1), en particulier dans lequel chacun des interventions de forme successifs du deuxième outil (2b) a lieu à une position de la pièce (1) qui est opposée à la position de la pièce (1) par rapport à l'axe longitudinal (Z) à laquelle une intervention de forme du premier outil (2a) a lieu simultanément ; en particulier, dans lequel le premier outil (2a) et le deuxième outil (2b) sont réalisés sous la forme d'un rouleau.
  8. Procédé selon l'une des revendications 1 à 7, dans lequel la pièce est en outre traitée par un autre outil (2a2, 2a1') dans une multitude de interventions de forme exécutées successivement, dans lesquelles l'autre outil (2a2, 2a1) vient en contact avec la pièce (1), en particulier dans lequel un porte-outil (5 ; 5a2,...) qui maintient l'autre outil (2a1') effectue le même mouvement orbital (R8) que le porte-outil déjà mentionné (5 ; 5a1,...), et dans lequel cet autre porte-outil (5 ; 5a2) est identique au porte-outil déjà mentionné (5 ; 5a1,...) ou est différent de celui-ci ; en particulier dans lequel le premier outil (2a) et l'outil supplémentaire (2a2, 2a1') sont réalisés sous forme d'un rouleau.
  9. Procédé selon la revendication 8, dans lequel l'autre outil (2a1') est maintenu par le même porte-outil (5a1) que le premier outil (2 ; 2a1), en particulier dans lequel l'autre outil (2a1 ; 2a1') est monté dans le porte-outil (5a1) de manière rotative autour d'un autre axe d'outil qui est différent de l'axe de rotation (W) et du premier axe d'outil (Q), en particulier dans lequel l'autre axe d'outil est distant azimutalement du premier axe d'outil (Q), et en particulier dans lequel le premier (Q) et l'autre axe d'outil et l'axe de rotation (W) sont alignés perpendiculairement à un plan commun.
  10. Procédé selon la revendication 8, dans lequel un second porte-outil (5a2) est fourni, ledit second porte-outil étant différent du premier porte-outil (5a1), et au moyen du second porte-outil l'autre outil (2a2) est monté de manière rotative autour d'un autre axe d'outil, dans lequel les mouvements orbital du premier et du second porte-outil décrivent la même trajectoire orbital (U), en particulier, l'autre outil (2a2) est monté dans le second porte-outil (5a2) de manière rotative autour d'un autre axe d'outil qui est différent d'un axe de rotation du second porte-outil, et en particulier, le premier (Q) et l'autre axe d'outil et l'axe de rotation (W) sont alignés perpendiculairement à un plan commun.
  11. Dispositif (100) pour la fabrication d'un corps profilé (1p) pourvu d'un profilage (P) par formage à froid d'une pièce (1), dans lequel le dispositif (100) comprend :
    - un porte-pièce (10) rotatif autour de son axe longitudinal (Z), pour porter la pièce (1) ;
    - un dispositif d'entraînement (A1) pour produire un mouvement de rotation (R1) du porte-pièce (10) autour de l'axe longitudinal (Z) ;
    - un corps orbital (8) ;
    - un premier porte-outil (5 ; 5a1) pour porter un premier outil (2a ; 2a1), dans lequel le porte-outil (5 ; 5a1) est monté dans le corps orbital (8) de manière rotative autour d'un axe de rotation (W) du premier porte-outil (5 ; 5a1,...);
    - un dispositif d'entraînement (A5) pour produire un mouvement de rotation (R5) du premier porte-outil (5 ; 5a1) autour de son axe de rotation (W) ;
    - un dispositif d'entraînement (A8) pour produire un mouvement du corps orbital (8), au moyen duquel le premier porte-outil (5 ; 5a1) peut être entraîné dans un mouvement orbital (R8) ;
    - un premier dispositif de synchronisation (S1) pour synchroniser le mouvement de rotation (R5) du porte-pièce (10) avec le mouvement orbital (R8) du premier porte-outil (5 ; 5a1) ;
    - un deuxième dispositif de synchronisation (S5) pour synchroniser le mouvement de rotation (R5) du premier porte-outil (5 ; 5a1) avec le mouvement orbital (R8) du premier porte-outil (5 ; 5a1) ;
    caractérisé en ce que le premier porte-outil (5 ; 5a1) comprend un premier palier de rotation pour recevoir le premier outil (2 ; 2a1), ledit premier palier de rotation définissant un premier axe d'outil (Q) qui est différent de l'axe de rotation (W) du premier porte-outil (5 ; 5a1), de telle sorte que le premier outil (2 ; 2a1) est rotatif, en particulier librement rotatif, autour du premier axe d'outil (Q).
  12. Dispositif(100) selon la revendication 11, comprenant le premier outil (2 ; 2a1), monté dans le premier palier de rotation pour être rotatif autour du premier axe d'outil (Q), en particulier dans lequel le premier outil (2 ; 2a1)
    - comprend une zone active (2) qui est rotativement symétrique par rapport au premier axe d'outil (Q) ; et/ou
    - se présente sous la forme d'un rouleau (2 ; 2a1).
  13. Dispositif (100) selon la revendication 11 ou la revendication 12, dans lequel le dispositif (100) comprend un dispositif d'entraînement (AZ) pour produire un mouvement du porte-pièce (100) parallèlement à l'axe longitudinal (Z).
  14. Dispositif (100) selon l'une des revendications 11 à 13, présentant un train épicycloïdal (40) qui est un composant du deuxième dispositif de synchronisation (S5) et/ou un composant du dispositif d'entraînement (A5) pour produire un mouvement de rotation (R5) du premier porte-outil (5 ; 5a1) autour de son axe de rotation (W).
  15. Dispositif selon l'une des revendications 11 à 14, dans lequel le corps orbital (8) est monté dans une tête de profilage (3), et cependant le dispositif (100) comporte un entraînement (A2) pour un mouvement de la tête de profilage (3) vers l'axe longitudinal (Z).
EP22732951.3A 2021-06-04 2022-06-02 Dispositif et procédé de profilage de pièces par formage à froid Active EP4347151B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH00654/21A CH718706A1 (de) 2021-06-04 2021-06-04 Vorrichtung und Verfahren zum kaltumformenden Profilieren von Werkstücken.
PCT/EP2022/065014 WO2022253942A1 (fr) 2021-06-04 2022-06-02 Dispositif et procédé de profilage de pièces par formage à froid

Publications (2)

Publication Number Publication Date
EP4347151A1 EP4347151A1 (fr) 2024-04-10
EP4347151B1 true EP4347151B1 (fr) 2025-05-21

Family

ID=78073763

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22732951.3A Active EP4347151B1 (fr) 2021-06-04 2022-06-02 Dispositif et procédé de profilage de pièces par formage à froid

Country Status (7)

Country Link
US (1) US20240261840A1 (fr)
EP (1) EP4347151B1 (fr)
JP (1) JP7846708B2 (fr)
KR (1) KR20240043134A (fr)
CN (1) CN117794660A (fr)
CH (1) CH718706A1 (fr)
WO (1) WO2022253942A1 (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH372535A (de) * 1959-08-05 1963-10-15 Grob Ernst Maschine zum Profilieren von Metallkörpern
CH579427A5 (fr) * 1975-02-24 1976-09-15 Grob Ernst Fa
ATE155717T1 (de) * 1994-06-25 1997-08-15 Grob Ernst Fa Verfahren und vorrichtung zum walzen von hohlteilen
JP2007519528A (ja) * 2004-02-06 2007-07-19 エルンスト グロープ アクチェンゲゼルシャフト 工作物に歯状の成形部を製作する装置及び方法
CA2615220C (fr) * 2005-07-15 2013-01-08 Ernst Grob Ag Procede pour realiser des dentures interieures et exterieures sur des pieces creuses cylindriques a paroi mince
WO2009112074A1 (fr) * 2008-03-13 2009-09-17 Ernst Grob Ag Dispositif et procédé de production de profils dentés sur des pièces
DE102014002971A1 (de) 2014-03-06 2015-09-10 Webo Werkzeugbau Oberschwaben Gmbh Verfahren und Vorrichtung zur Herstellung eines innen-und außenverzahnten topfförmingen Blechteils mit einem Umformkopf
CH714772A1 (de) * 2018-11-15 2019-09-13 Grob Ernst Fa Vorrichtung und Verfahren zum kaltumformenden Profilieren von Werkstücken.

Also Published As

Publication number Publication date
CN117794660A (zh) 2024-03-29
JP2024521913A (ja) 2024-06-04
CH718706A1 (de) 2022-12-15
KR20240043134A (ko) 2024-04-02
EP4347151A1 (fr) 2024-04-10
JP7846708B2 (ja) 2026-04-15
US20240261840A1 (en) 2024-08-08
WO2022253942A1 (fr) 2022-12-08

Similar Documents

Publication Publication Date Title
EP3043945B1 (fr) Procédé de décolletage en développante, et dispositif correspondant
EP2440357B1 (fr) Procédé et dispositif de taillage en développante de pignons à denture intérieure, et roue de taillage associée
EP3274118B1 (fr) Procédé et dispositif servant à tailler des roues d'usinage par décolletage en développante
EP1454684B1 (fr) Procédé pour le formage d' une pièce et machine de laminage
DE19830817B4 (de) Verfahren zum Umformen eines Werkstücks durch Drückwalzen
DE1204615C2 (de) Maschine zum Kaltwalzen gerader oder zu der Werkstueckachse schraeg verlaufender paralleler Zahnradzaehne oder anderer Profile am Umfang eines zylindrischen Werkstuecks
EP3263260A1 (fr) Roue dentée, procédé de fabrication de denture d'une roue dentée et outil destiné à fabriquer la denture d'une roue dentée
DE102007039959B4 (de) Verfahren zum Kaltwalzen von längsgerichteten Verzahnungen und Profilen bei langen wellenförmigen Werkstücken und Profilwalzmaschine hierzu
DE4315503A1 (de) Verfahren zum Herstellen eines hohlen Werkstücks, das wenigstens innen gerade oder schräg zur Werkstückachse profiliert ist
EP3880384B1 (fr) Dispositif et procédé de profilage de pièces par formage à froid
EP4347151B1 (fr) Dispositif et procédé de profilage de pièces par formage à froid
DE1905949C2 (de) Vorrichtung zum Querwalzen von Rotationskörpern
EP2841218B1 (fr) Dispositif et procédé de fabrication de couronnes à parois épaisses pourvues d'une denture intérieure de roue de roulement
EP1713600B1 (fr) Dispositif et procede de production de profils de type dente sur des pieces
DE102013109981A1 (de) Wälzschälverfahren und zugehörige Vorrichtung
DE4321779B4 (de) Verfahren zur Herstellung eines Starterkranz-Zahnrads aus Blech und nach dem Verfahren hergestelltes Starterkranz-Zahnrad
DE1961606A1 (de) Verfahren und Vorrichtung zum Formen von Zahnradzaehnen
EP3752302B1 (fr) Procédé et dispositif de production de couronnes à parois minces comportant une denture intérieure et extérieure
EP3380262B1 (fr) Dispositif de fabrication pour la fabrication d'une pièce pleine et procédé de fabrication de la piece pleine à l'aide du dispositif de fabrication
DE3632260C2 (de) Verfahren und Vorrichtung zum Herstellen von schrägen Verzahnungen durch Kaltumformen
DE1054047B (de) Einrichtung zum Erzeugen von Gewinden durch einen Walzvorgang
EP4360789A1 (fr) Procédé de fabrication d'une denture, machine-outil pour la fabrication d'une telle denture, combinaison de pièce et outil ainsi qu'utilisation d'un outil pour la fabrication d'une denture
DE102006006192A1 (de) Profilwalzmaschine mit Hydromotor
DE19921861A1 (de) Verfahren und Vorrichtung zur Herstellung profilierter Körper
CH364474A (de) Verfahren und Vorrichtung zum spanlosen Formen von Längsnuten zylindrischer Metallkörper

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20231201

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20250102

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

P01 Opt-out of the competence of the unified patent court (upc) registered

Free format text: CASE NUMBER: APP_11720/2025

Effective date: 20250311

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502022004045

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20250618

Year of fee payment: 4

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20250721

Year of fee payment: 4

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20250521

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250521

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250521

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250922

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250821

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250822

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250521

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250521

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250521

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250521

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20250701

Year of fee payment: 4

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250821

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250921

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250521

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250521

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250521

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250521

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250521

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250521

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250521

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20250602

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250521

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502022004045

Country of ref document: DE

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20250630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20250521

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

REG Reference to a national code

Ref country code: CH

Ref legal event code: L10

Free format text: ST27 STATUS EVENT CODE: U-0-0-L10-L00 (AS PROVIDED BY THE NATIONAL OFFICE)

Effective date: 20260402

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20250602

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20250630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20250721

26N No opposition filed

Effective date: 20260224