EP4299207A1 - Porte-outil en forme de c, appareil de pose doté du porte-outil en forme de c et procédé de réglage d'une différence de décalage du porte-outil en forme de c - Google Patents

Porte-outil en forme de c, appareil de pose doté du porte-outil en forme de c et procédé de réglage d'une différence de décalage du porte-outil en forme de c Download PDF

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Publication number
EP4299207A1
EP4299207A1 EP22181365.2A EP22181365A EP4299207A1 EP 4299207 A1 EP4299207 A1 EP 4299207A1 EP 22181365 A EP22181365 A EP 22181365A EP 4299207 A1 EP4299207 A1 EP 4299207A1
Authority
EP
European Patent Office
Prior art keywords
leg
tool holder
working end
compensating element
shaped tool
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.)
Granted
Application number
EP22181365.2A
Other languages
German (de)
English (en)
Other versions
EP4299207B1 (fr
Inventor
Andre Kleinemeier
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.)
Boellhoff Verbindungstechnik GmbH
Original Assignee
Boellhoff Verbindungstechnik GmbH
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 Boellhoff Verbindungstechnik GmbH filed Critical Boellhoff Verbindungstechnik GmbH
Priority to EP22181365.2A priority Critical patent/EP4299207B1/fr
Priority to US18/214,314 priority patent/US20230415222A1/en
Priority to CN202310768722.0A priority patent/CN117299940A/zh
Publication of EP4299207A1 publication Critical patent/EP4299207A1/fr
Application granted granted Critical
Publication of EP4299207B1 publication Critical patent/EP4299207B1/fr
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Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/14—Dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/30—Particular elements, e.g. supports; Suspension equipment specially adapted for portable riveters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/04—Frames; Guides
    • B30B15/044—Means preventing deflection of the frame, especially for C-frames
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/02—Riveting procedures
    • B21J15/025—Setting self-piercing rivets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/36—Rivet sets, i.e. tools for forming heads; Mandrels for expanding parts of hollow rivets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/04—Frames; Guides
    • B30B15/047—C-shaped frames
    • 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
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/03—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal otherwise than by folding
    • B21D39/031—Joining superposed plates by locally deforming without slitting or piercing

Definitions

  • the present invention relates to a C-shaped tool holder, a setting tool with the C-shaped tool holder and a method for adjusting an offset difference of the C-shaped tool holder.
  • C-shaped tool holders are well known in the art, for example in setting tools.
  • a corresponding C-shaped tool holder has a frame structure that defines a frame plane and includes two legs that are connected to one another via a connecting piece.
  • a stamp with a drive unit and a die dome are arranged at the free ends of the legs.
  • Such a process-related deformation is, for example, the bending of the C-shaped tool holder during the setting process.
  • mechanical active means are provided which are to be attached to the tool holder, in particular releasably, and act in or on a deformation area, which influence predetermined mechanical properties, in particular deformation properties, of the tool holder in a predetermined sense during the deformation. Accordingly, the mechanical active means counteracts process-related deformation of the tool holder, ie bending of the C-shaped tool holder.
  • the C-shaped tool holder has a fastening area for a connection unit for connection to the multi-axis robot either in the middle of the area of the connecting piece or adjacent to it on the first leg, i.e. at the top.
  • the C-shaped tool holder is therefore often arranged not only vertically, but also inclined or horizontally.
  • the C-shaped tool holder deforms due to its own weight and the weight of the drive, which has a major influence on the centricity of the connection.
  • various other disturbance variables such as play in the guides or manufacturing tolerances and the material thickness of the C-shaped tool holder, which can lead to deviations from an ideal working or joining point. This must also be taken into account due to the increasing demands on setting tools.
  • a disadvantage of the known C-shaped tool holders is that the requirements for centricity limit the possible combinations of punch with drive unit and die and require the use of special designs.
  • the latter is accompanied by high costs in design and production, long delivery times, higher storage costs as well as the corresponding spare parts inventory and increased effort in parts master maintenance.
  • the object of the present invention is therefore to provide an alternative solution for a C-shaped tool holder which reliably meets the requirements for the centricity of the connection in combination with various drive units even in a horizontal tool position and thus overcomes the above disadvantages.
  • it is a task to provide a corresponding setting device and a method for setting an offset difference of the C-shaped tool holder.
  • a C-shaped tool holder according to the invention with a frame structure that defines a frame plane comprises a first leg and a second leg arranged opposite the first leg, each of which has a connecting end and a working end, a connecting piece via which the first and second legs connect the respective connecting end are connected to one another, the working end of the first leg serving to fasten a punch with an associated drive unit which defines a direction of movement of the punch towards the working end of the second leg, and the working end of the second leg serving to fasten a die dome, wherein an offset difference due to an offset caused by gravity between the working end of the first and the working end of the second leg perpendicular to the frame plane by at least a compensating element can be minimized, which is arranged on one or more of the following elements: the first leg, the second leg or the connecting piece, and an intersection of a first straight line which corresponds to the direction of movement of the punch towards the working end of the second leg, and one second straight line, which runs from the working end of the second leg towards the working end of the
  • the C-shaped tool holder when used in a setting tool is discussed below.
  • the C-shaped tool holder preferably has a truss-like frame structure. Due to the use in a setting tool, a punch with an associated drive unit and a die dome are preferably attached to the working end of the first leg and a die dome to the working end of the second leg.
  • the C-shaped tool holder is connected to a multi-axis robot, for example, via a central fastening area for a connection unit. The connection unit is therefore provided in the middle of the connecting piece.
  • a vertical tool position is assumed.
  • the frame plane runs parallel to gravity.
  • the first straight line which corresponds to the direction of movement of the punch towards the working end of the second leg, and the second straight line are congruent.
  • the first and second straight lines therefore run, for example, along a first axis, namely the x-axis of a Cartesian coordinate system.
  • the y-axis extends parallel to the first and second legs.
  • the x and y axes therefore span the frame plane defined by the frame structure.
  • the weight of the drive unit on the first leg causes the working end of the first leg to be offset from the frame plane due to gravity, ie along the z-axis.
  • the decisive factor for this is the lever arm of the first leg in the y-direction, ie a length of the first leg or the distance between the working end of the first leg and the connection unit along the y-axis. This applies analogously to the working end of the second leg with the matrix dome.
  • the gravity-related offset for the working end of the second leg is less than the gravity-related offset of the first leg.
  • the first and second straight lines are parallel to each other, but are no longer congruent. This results in the gravity-related offset difference between the working end of the first and the working end of the second leg, which must be compensated for.
  • lever arms of the first and second legs resulting from the exemplary central connection along the x-axis must be taken into account. Because these lever arms cause an angular offset to occur in addition to the offset caused by gravity, as a result of which the first straight line and the second straight line no longer run parallel to one another, but intersect at an intersection. However, this intersection point does not necessarily correspond to the operating point of the setting tool, so that an appropriate adjustment or correction is required here too.
  • At least one compensation element is provided.
  • this is attached to the first leg due to the greater gravity-related offset, which is preferably done releasably, for example by means of screws, pins, clips or clamps. It is precisely the detachable fastening that opens up the possibility of taking the changed gravity-related offset into account when using a different punch with a drive unit and/or a different die dome.
  • the C-shaped tool holder preferably has two compensating elements, preferably on opposite sides of the same element, here the first leg. In this way, the deformation of the first leg is adapted to the deformation of the second leg so that the first and second straight lines meet or intersect at the working point.
  • the at least one compensating element is arranged at least on the connecting piece. This is due to the changed lever arms along the x-axis and the y-axis of the first and second legs due to the different connection and the resulting changed deformation of the first and second legs.
  • the connecting piece is arranged at least on the connecting piece.
  • a general advantage of this approach is that the eccentricity of a standardized modular tool in the form of a C-shaped tool holder can be subsequently adjusted. Therefore, the at least one compensating element can preferably be variably attached to one of the elements of the first leg, second leg or connecting piece.
  • compensation for the play of the hold-down device in the exemplary setting device can also be achieved in this way.
  • the centricity can also be individually adjusted for a variety of combinations of die dome and C-shaped tool holder.
  • the use of a modular system is therefore still possible, with additional combinations of punch with drive unit and die dome being possible compared to the prior art.
  • the C-shaped tool holders must be less rigid and the weight of the C-shaped tool holders can be reduced. This also means that the width of the C-shaped tool holders can be reduced, which also reduces the interference contour. This also has a positive effect on the manufacturing costs, as these are also reduced when the width of the C-shaped tool holder is reduced.
  • the at least one compensating element has, in cross section, a first axial surface moment of inertia and a second axial surface moment of inertia, which is greater than the first axial surface moment of inertia, and the at least one compensating element is arranged so that the second axial surface moment of inertia acts perpendicular to the frame plane.
  • the axial area moment of inertia takes into account the cross-sectional dependence of the bending of the at least one compensating element under load. The bending of the at least one compensating element is smaller, the larger the axial moment of inertia is.
  • the at least one compensating element is arranged on one of the elements of the first leg, second leg or connecting piece in such a way that gravity causes the smaller bending.
  • the larger axial moment of inertia therefore acts perpendicular to the frame plane.
  • this procedure is explained using a compensating element with a rectangular cross section. In cross section, this has a height h that is greater than its width b.
  • this rectangular compensation element is arranged, for example, on the first leg in such a way that the height h extends parallel to the x-axis of the Cartesian coordinate system defined at the input and thus to the frame plane. Accordingly, the width b extends parallel to the z-axis, i.e. out of the frame plane.
  • the axial area moment of inertia of the compensating element when bent about an axis parallel to the x-axis, ie with a gravity-induced bend, is therefore calculated as: H ⁇ b 3 12 .
  • the compensation element is arranged, for example, on the first leg in such a way that the width b extends parallel to the x-axis, whereby the height h now extends out of the frame plane parallel to the z-axis.
  • the axial moment of inertia is calculated for a bending about an axis parallel to the x-axis, ie for a gravity-induced bending b ⁇ H 3 12 .
  • the larger axial moment of inertia acts perpendicular to the frame plane.
  • the larger area moment of inertia acts in the frame plane, namely when bending about an axis parallel to the z-axis.
  • the at least one compensating element stiffens, for example, the first leg in such a way that the offset difference between the first and second leg is minimized and the intersection point between the first and second straight lines corresponds to the operating point of the exemplary setting tool.
  • the at least one compensating element has at least two attachment points, preferably at least four, six, eight or ten attachment points and particularly preferably one Variety of attachment points.
  • two fastening points are preferably located directly next to one another, for example at one end of the at least one compensating element. Due to the use of two fastening points directly next to each other, operating force-induced bending of the C-shaped tool holder can also be counteracted.
  • the compensating element has the shape of a hollow or shell profile and that there are also two sliding blocks between the compensating element and the first leg, the second leg or the connecting piece.
  • the sliding blocks prevent the at least one compensating element from being deformed and thus losing its positive properties.
  • the area moment of inertia can still be influenced by the dimensioning of the sliding block.
  • a setting tool according to the invention comprises a C-shaped tool holder according to the invention, a punch with an associated drive unit being attached to the working end of the first leg and a die dome being attached to the working end of the second leg.
  • a corresponding setting device has already been discussed in detail as part of the discussion of the C-shaped tool holder according to the invention. In order to avoid unnecessary repetitions, reference is made to the relevant statements regarding the technical effects and advantages.
  • the setting tool is advantageously attached to a multi-axis robot via the C-shaped tool holder. In this way, the setting tool can be used in different orientations, for example in an automated production line.
  • a method according to the invention for setting an offset difference between a first and a second leg of a C-shaped tool holder according to the invention comprises the steps: arranging the C-shaped tool holder so that a frame plane is aligned perpendicular to gravity, then determining a first offset of the first leg based on the frame level and determining a second offset of the second leg based on the frame level, then attaching at least one compensation element on one or more of the first leg, the second leg or the connector, and minimizing an offset difference between the working end of the first and the working end of the second leg.
  • the method comprises the further step: setting an intersection point of a first straight line, which corresponds to a direction of movement of the stamp towards the working end of the second leg, and a second straight line, which extends from the working end of the second leg towards the working end of the first leg runs through the at least one compensation element to a working point.
  • the at least one compensating element has in cross section a first axial surface moment of inertia and a second axial surface moment of inertia which is greater than the first axial surface moment of inertia, and the step of fastening is carried out such that the compensating element is arranged so that the second Axial moment of inertia acts perpendicular to the frame plane.
  • This procedure causes a stiffening of the corresponding element on which the at least one compensating element is arranged, and in this way realizes the compensation of the offset difference and sets the intersection of the first and second straight lines to the working point.
  • the at least one compensating element is attached to one or more of the following elements via at least two attachment points: the first leg, the second leg or the connecting piece.
  • the at least one compensating element is releasably attached to the first leg, the second leg or the connecting piece, preferably by means of screws, pins, clips or clamps.
  • the detachable fastening in particular allows the C-shaped tool holder to be adapted to various punches with drive units and die domes, as this makes it possible to adapt to the respective weight.
  • the modular principle can therefore still be applied.
  • the at least one compensating element advantageously has the shape of a hollow or shell profile and at least two sliding blocks are present between the compensating element and the first leg, the second leg or the connecting piece.
  • the sliding blocks prevent the at least one compensating element from being deformed during fastening and thus losing its positive properties.
  • the area moment of inertia can be further influenced by the dimensioning of the slot nuts.
  • the C-shaped tool holder 1 has a truss-like frame structure 10.
  • the C-shaped tool holder 1 includes a first leg 20 and a second leg 30 arranged opposite the first leg 20.
  • the first leg 20 has a working end 22 and a connecting end.
  • the second leg 30 includes a working end 32 and a connecting end.
  • the connecting ends the first 20 and the second leg 30 are connected to one another via a connecting piece 40.
  • the section includes the connecting piece 40 and the area of the first leg 20 with the connecting end.
  • a vertical tool position is assumed, as shown in Figure 1 is indicated.
  • the frame plane R runs parallel to gravity.
  • a first straight line G 1 which corresponds to a direction of movement of a stamp in the direction of the working end of the second leg 30, and the second straight line G 2 are congruent.
  • the first G 1 and the second straight line G 2 therefore run, for example, along a first axis, namely the x-axis of a Cartesian coordinate system.
  • the y-axis extends parallel to the first 20 and the second leg 30.
  • the x and y axes therefore span the frame plane R defined by the frame structure 10 (see also Figures 4 and 5 ).
  • the C-shaped tool holder 1 includes a central fastening area 12 in the area of the connecting piece and an upper fastening area 14 in the area of the first leg 20.
  • the upper fastening area 14 in the area of the first leg 20 is preferably aligned so that it is aligned with the x-axis , and therefore also with the y-axis, forms an angle of 45°.
  • a connection unit 3 is mounted on one of the fastening areas 12, 14 for connection to the multi-axis robot.
  • connection unit 3 whose connection surface to the multi-axis robot runs parallel to the x and parallel to the z axis of the Cartesian coordinate system.
  • the connection unit 3 is mounted on the upper fastening area 14, with the connection surface being different in each case is aligned. So the connection surface can be, as in the illustration on the left Figure 1 , initially run parallel to the x and z axes. Alternatively, the connection surface can run parallel to the y and z axes. This is in the third illustration from left to right Figure 1 shown. In other words, and based on these two orientations of the connection surface, there is an angle of 45° between the upper fastening area 14 and the connection surface. Finally, and with reference to the last illustration, the connection surface, like the upper fastening area 14, can form a 45° angle with both the x and y axes and extend parallel to the z axis.
  • Figure 2 shows a special solution of a connection unit 3.
  • the connection is not only made to the outer part of the C-shaped tool holder 1, but extends in the area of the connecting piece 40 over the width of the C-shaped tool holder 1.
  • Figure 3 shows Figure 3 in the upper view schematically the C-shaped tool holder 1 with the punch with drive unit 24 on the first leg 20 and the die dome 34 on the second leg 30.
  • the connection to the multi-axis robot takes place in the middle of the C-shaped tool holder 1.
  • first straight line G 1 corresponds to the direction of movement of the punch 24 in the direction of the die dome 34.
  • the second straight line G 2 runs from the working end of the second leg 30 towards the working end 22 of the first leg 20 Figure 3 It is assumed that the second straight line G2 continues to run parallel to the x-axis of the reference system, ie the Cartesian coordinate system introduced at the beginning.
  • Both figures show schematically the C-shaped tool holder 1, in which the connection unit 3 is attached centrally to the connecting piece 40.
  • the Cartesian coordinate system with x, y and z axes is shown, which is used as a reference system in the registration.
  • the frame plane R defined by the frame structure 10 thus lies in the x, y plane, as shown at the beginning. Due to the horizontal arrangement of the C-shaped tool holder 1, the frame plane R thus runs parallel to the floor.
  • the stamp 24 with a drive unit is provided at the working end 22 of the first leg 20, the stamp 24 with a drive unit is provided. This is marked as the first mass m 1 .
  • the matrix dome 34 is provided at the working end 32 of the second leg 30. This is marked as the second mass m 2 .
  • the first mass m 1 is larger than the mass m 2 , so that the resulting first force F 1 at the working end 22 of the first leg 20 is also larger than the resulting second force F 2 at the working end 32 of the second leg 30. This is due to both Arrows on the forces F 1 , F 2 as well as the dimensions of the boxes symbolizing the masses are illustrated.
  • each leg 20, 30 is therefore divided into a first lever arm parallel to the x-axis and a second lever arm parallel to the y-axis.
  • the first leg 20 thus has the lever arm a x in the x-direction or parallel to the x-axis and the lever arm a y in the y-direction or parallel to the y-axis.
  • the second leg 30 includes the lever arm b x in the x direction or parallel to the x axis and the lever arm b y in the y direction or parallel to the y axis.
  • Figure 4 serves to illustrate a first problem with the horizontal arrangement of the C-shaped tool holder 1, namely a possible difference in the offset of the working ends 22, 32 perpendicular to the frame plane R, ie parallel to the z-axis.
  • the lever arm in the y direction ie a y and b y , is decisive for this offset. Since the lever arms a y and b y are the same in the example shown, the different masses m 1 and m 2 and thus the differently sized acting first F 1 and second forces F 2 cause an offset difference ⁇ z in the z direction or parallel to the z -Axis between the first leg 20 and the second leg 30.
  • the first straight line G 1 and the second straight line G 2 are no longer aligned concentrically or centrally with one another. Rather, there is an eccentricity.
  • inclination ⁇ F l 2 2 E I calculate, where F is the force, 1 is the length of the lever arm, E is the modulus of elasticity and I is the area moment of inertia of the leg cross section.
  • both the offset difference ⁇ z must be minimized and the angular offset must be taken into account. Furthermore, the intersection S of the first straight line G 1 and the second straight line G 2 must be set so that the two straight lines meet at the working point, ie the intersection point S must correspond to the working point.
  • the deflections of the first 20 and the second leg 30 must be adjusted. Consequently, the condition that the deflection of the first leg 20 and the deflection of the second leg 30 are approximately the same must be satisfied as much as possible.
  • the inclination ⁇ of the first and second legs 20, 30 with respect to the x direction causes the first straight line G 1 and the second straight line G 2 to intersect at the intersection point S.
  • the angular offset is negligibly small compared to the deflections, it is important for the intersection point S.
  • FIG. 6 a first embodiment of a C-shaped tool holder 1 according to the invention.
  • This has two compensating elements 50 which are detachably attached to opposite sides of the first leg 20 by means of pins 54. All releasable connection types that can be created with hand-held devices are suitable for attaching the compensating elements 50 to the C-shaped tool holder 1 or to the corresponding frame structure 10. This particularly includes screwing, pinning, clamping and clamping.
  • the compensating element 50 does not necessarily have to be straight, but can also be curved, arcuate or bent.
  • the compensating element 50 consists of a U-shaped profile that has ten openings 52. Two openings 52 are provided immediately adjacent to each other at a first axial end, while the remaining eight openings 52 are provided spaced therefrom and beginning at the second axial end. Even if in the present example two openings 52 are arranged next to one another at the first axial end, the use of one opening 52 each is sufficient to implement the function.
  • the frame structure 10 of the C-shaped tool holder 1 has corresponding openings 16. This is done, for example, in Figure 10 clearly.
  • the pins 54 are arranged in the two openings 52 at the first axial end of the compensating element 50 and in the penultimate pair of the series of eight openings 52 starting at the second axial end of the compensating element 50.
  • the pins are 54 in Figure 7 arranged in the last pair of the row of eight openings 52.
  • the effect of the compensating element 50 is influenced, in addition to the shape of the compensating element, by the position of the pins 54. This is done with reference to Figure 8 explained.
  • a maximum effective length L max of the compensation element 50 is therefore determined by the distance between the openings 52 at the axial ends.
  • the effective length L eff is determined by the distance between the two furthest apart pins 54.
  • the minimum length that should be selected as the effective length L eff preferably corresponds to at least one third of the lever arm a y of the first leg 20 in the y direction, ie when using the middle fastening area 12, L eff ⁇ 1/3 a y applies.
  • the compensating element 50 is preferably arranged on the connecting piece 40, as shown in Figure 13 is shown. In this In this case, the effective length L eff corresponds to at least a quarter of the sum of the lever arm of the first leg 20 and the second leg 30 in the x direction, ie L eff ⁇ 1/4 (ax + bx).
  • Figure 9 shows preferred cross-sectional views of the preferred embodiments of the compensation element 50. From top to bottom and from left to right, these are a full or solid rectangle, a hollow rectangle or box profile, a U-shape, a full or solid circular layer, a hollow circular layer , a hollow circular layer open at the bottom, a full or solid trapezoid shape, a T-shape or a double-T shape.
  • the term circular layer is understood to mean a cross-sectional shape which, analogous to a spherical disk or spherical layer, represents a part of a circle that is cut out by two parallel straight lines. It is also possible to use an L-shape, a triangle, a solid or hollow semicircle, or the like.
  • the problems initially identified can be taken into account by a suitable choice of the cross-sectional shape of the compensating element 50. Because different surface moments of inertia offer an opportunity to adjust the centricity.
  • the compensating element 50 therefore has a first axial area moment of inertia and a second axial area moment of inertia in cross section, which is greater than the first axial area moment of inertia.
  • the at least one compensating element 50 is also arranged so that the second axial moment of inertia acts perpendicular to the frame plane R.
  • the axial area moment of inertia takes into account the cross-sectional dependence of the bending of the at least one compensating element 50 under load. The bending of the at least one compensating element 50 is smaller, the larger the axial moment of inertia is.
  • the at least one compensating element 50 in the present embodiment is preferably arranged on the first leg 20 in such a way that gravity causes the smaller bending.
  • the larger axial moment of inertia thus acts perpendicular to the frame plane R.
  • a compensating element 50 with a rectangular cross section In cross section, this has a height h that is greater than its width b.
  • this rectangular compensation element 50 is arranged on the first leg in such a way that the height h is parallel to the x-axis and the width b is parallel to the z-axis, i.e. from the frame plane out, extends, then the axial moment of inertia of the compensating element 50 is calculated when it bends about an axis parallel to the x-axis, ie when it bends due to gravity H ⁇ b 3 12 .
  • the compensating element 50 is arranged on the first leg 20 in such a way that the width b extends parallel to the x-axis and the height h extends parallel to the z-axis out of the frame plane, then the axial moment of inertia is calculated when it is bent about an axis parallel to the x-axis, ie in the event of gravity-induced bending b ⁇ H 3 12 .
  • the larger axial moment of inertia acts perpendicular to the frame plane R.
  • the compensating element 50 and its cross-sectional shape are therefore used particularly effectively.
  • the larger moment of inertia acts in the frame plane R, namely when bending about an axis parallel to the z-axis.
  • the selected effective length L eff of the compensating element 50 and the mounting position offer further adjustment options and are dependent on the weight forces and the respective lengths of the lever arms measured from the connection, ie at the top or in the middle, to the force application point, ie the drive end 22, 32.
  • sliding blocks 56 Another advantage of using the sliding blocks 56 is discussed below, because with the sliding blocks 56 the distance of the compensating element 50 from the frame plane R of the C-shaped tool holder 1 can be varied.
  • sliding blocks 56 are used, which have different extensions parallel to the z-axis, whereby the Steiner proportion (Steiner's theorem) and thereby the area moment of inertia are increased.
  • Steiner proportion Steper's theorem
  • Figure 12 represents the cross section of the first leg 20 with two laterally attached compensating elements 50.
  • stiffening elements such as profiles, springs and dampers are installed symmetrically to the frame plane R in a C-shaped tool holder, which is intended to minimize the operating force-induced bending of the tool holder.
  • stiffening elements such as profiles, springs and dampers are installed symmetrically to the frame plane R in a C-shaped tool holder, which is intended to minimize the operating force-induced bending of the tool holder.
  • the compensating elements 50 must be positioned laterally on the C-shaped tool holder 1 in order to be transverse to the horizontal position To counteract the gravity acting on the frame level R.
  • I represents P,x,tot. represents the total moment of inertia of the compensation element 50
  • I P,x. is the moment of inertia of the compensation element 50 based on or around the x-axis
  • l P,z is the distance of the center of gravity S F of the compensation element 50 from the reference axis
  • ie the x-axis ie the x-axis
  • AP is the cross-sectional area of the compensation element 50.
  • the completeness for the sake of it are in Figure 12 also the width bc of the first leg 20 as well as the cross-sectional area A C of the upper leg 20 and the bending moment M about the x-axis are shown.
  • l P e.g > 0 preferably l P , e.g > 1 2 b C and particularly preferred l P , e.g > 5 8th b C
  • Figure 13 shows the attachment of a compensating element 50 when using the upper fastening option 14 for the connection unit 3.
  • the compensating element 50 was attached in particular along the connecting piece 40.
  • the decisive factor for the alignment of the compensating element 50 is the bending moment, ie the acting force of gravity multiplied by the lever arm, i.e. the distance between the force application point and the connection unit 3.
  • the compensating element(s) 50 can also be attached to the outer edge surfaces or the inner edge surfaces of the C-shaped tool holder 1.
  • step D at least one compensating element 50 is attached to one or more of the first leg 20 and the second leg 30 or attached to the connector 40. This minimizes an offset difference ⁇ z_ between the working end 22 of the first leg 20 and the working end 32 of the second leg 30 (step E).
  • step F an intersection point S of a first straight line G 1 is set, which corresponds to a direction of movement of the stamp in the direction of the working end 32 of the second leg 30, and a second straight line G 2 that extends from the working end 32 of the second leg 30 in the direction of the working end 22 of the first leg 20 runs through the at least one compensating element 50 to an operating point.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Manipulator (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
EP22181365.2A 2022-06-27 2022-06-27 Porte-outil en forme de c, appareil de pose doté du porte-outil en forme de c et procédé de réglage d'une différence de décalage du porte-outil en forme de c Active EP4299207B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP22181365.2A EP4299207B1 (fr) 2022-06-27 2022-06-27 Porte-outil en forme de c, appareil de pose doté du porte-outil en forme de c et procédé de réglage d'une différence de décalage du porte-outil en forme de c
US18/214,314 US20230415222A1 (en) 2022-06-27 2023-06-26 C-shaped tool holder, setting device with the c-shaped tool holder and method for setting an offset difference of the c-shaped tool holder
CN202310768722.0A CN117299940A (zh) 2022-06-27 2023-06-27 C形刀架、具有c形刀架的设置装置和设置c形刀架偏移差的方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22181365.2A EP4299207B1 (fr) 2022-06-27 2022-06-27 Porte-outil en forme de c, appareil de pose doté du porte-outil en forme de c et procédé de réglage d'une différence de décalage du porte-outil en forme de c

Publications (2)

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EP4299207A1 true EP4299207A1 (fr) 2024-01-03
EP4299207B1 EP4299207B1 (fr) 2025-03-05

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US (1) US20230415222A1 (fr)
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU631361A1 (ru) * 1977-03-28 1978-11-05 Челябинский Политехнический Институт Имени Ленинского Комсомола Предварительно напр женна собразна станина пресса
DE29818082U1 (de) * 1998-10-09 1998-12-24 Böllhoff GmbH, 33649 Bielefeld Aufhängung für ein handgeführtes Montagewerkzeug
EP1119439A1 (fr) * 1998-06-18 2001-08-01 C-Power AB Support d'outil
DE102007020166A1 (de) 2007-04-26 2008-10-30 Robert Bosch Gmbh Werkzeughalter mit mechanischen Wirkmitteln

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2296051A (en) * 1940-06-19 1942-09-15 Hydraulic Dev Corp Inc Balancing column for horn presses
GB1181941A (en) * 1968-02-08 1970-02-18 Norton Tool Company Ltd Presses
SE364469B (fr) * 1973-01-19 1974-02-25 Carbox Ab
DE3809327A1 (de) * 1988-03-19 1989-10-05 Peddinghaus Carl Ullrich Dr Stanze mit einem in der seitenansicht liegend u-foermigen maschinengestell
US5060362A (en) * 1990-07-10 1991-10-29 Gemcor Engineering Corp. Slug riveting method and apparatus with C-frame deflection compensation
GB9602223D0 (en) * 1996-02-03 1996-04-03 Ariel Ind Plc A flexure-free applicator
DE102005043211A1 (de) * 2005-09-09 2007-03-15 Newfrey Llc, Newark Fügevorrichtung zum umformtechnischen Fügen
KR101392965B1 (ko) * 2012-08-23 2014-05-08 충북대학교 산학협력단 셀프 피어싱 리벳 장치 및 그의 엔빌유닛
US8935949B2 (en) * 2012-10-09 2015-01-20 The Boeing Company C frame structure configured to provide deflection compensation and associated method
DE102014109144B4 (de) * 2014-06-30 2021-12-30 Modus One Gmbh Verbesserte C-Gestell-Presse
DE102019122982A1 (de) * 2019-08-27 2021-03-04 Profil Verbindungstechnik Gmbh & Co. Kg Werkzeughalter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU631361A1 (ru) * 1977-03-28 1978-11-05 Челябинский Политехнический Институт Имени Ленинского Комсомола Предварительно напр женна собразна станина пресса
EP1119439A1 (fr) * 1998-06-18 2001-08-01 C-Power AB Support d'outil
DE29818082U1 (de) * 1998-10-09 1998-12-24 Böllhoff GmbH, 33649 Bielefeld Aufhängung für ein handgeführtes Montagewerkzeug
DE102007020166A1 (de) 2007-04-26 2008-10-30 Robert Bosch Gmbh Werkzeughalter mit mechanischen Wirkmitteln

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US20230415222A1 (en) 2023-12-28
EP4299207B1 (fr) 2025-03-05
CN117299940A (zh) 2023-12-29

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