EP3851249A1 - Dispositif de serrage de pièce - Google Patents

Dispositif de serrage de pièce Download PDF

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Publication number
EP3851249A1
EP3851249A1 EP21151282.7A EP21151282A EP3851249A1 EP 3851249 A1 EP3851249 A1 EP 3851249A1 EP 21151282 A EP21151282 A EP 21151282A EP 3851249 A1 EP3851249 A1 EP 3851249A1
Authority
EP
European Patent Office
Prior art keywords
base body
workpiece clamping
clamping device
threaded
centering
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
EP21151282.7A
Other languages
German (de)
English (en)
Other versions
EP3851249B1 (fr
Inventor
Günter Lang
Philipp Lang
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.)
Lang Technik GmbH
Original Assignee
Lang Technik 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 Lang Technik GmbH filed Critical Lang Technik GmbH
Publication of EP3851249A1 publication Critical patent/EP3851249A1/fr
Application granted granted Critical
Publication of EP3851249B1 publication Critical patent/EP3851249B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING
    • B25B1/00—Vices
    • B25B1/06—Arrangements for positively actuating jaws
    • B25B1/10—Arrangements for positively actuating jaws using screws
    • B25B1/103—Arrangements for positively actuating jaws using screws with one screw perpendicular to the jaw faces, e.g. a differential or telescopic screw
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING
    • B25B1/00—Vices
    • B25B1/02—Vices with sliding jaws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING
    • B25B1/00—Vices
    • B25B1/06—Arrangements for positively actuating jaws
    • B25B1/10—Arrangements for positively actuating jaws using screws
    • B25B1/12—Arrangements for positively actuating jaws using screws with provision for disengagement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING
    • B25B1/00—Vices
    • B25B1/24—Details, e.g. jaws of special shape, slideways
    • B25B1/2484—Supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING
    • B25B1/00—Vices
    • B25B1/24—Details, e.g. jaws of special shape, slideways
    • B25B1/2489—Slideways

Definitions

  • the invention relates to a workpiece clamping device which is designed to clamp a workpiece.
  • the workpiece clamping device has two clamping bodies which can be moved towards or away from one another in a clamping direction by driving a threaded spindle in order to clamp or loosen a workpiece.
  • a workpiece clamping device is for example off DE 10 2017 122 112 A1 famous.
  • a bearing block is arranged centrally between the displaceably mounted sprags.
  • a threaded spindle for moving the clamping body is constructed in several parts. Each part of the threaded spindle is mounted in the bearing block via a threaded end sleeve.
  • the threaded end sleeves rest with a flange on an outer surface of the bearing block.
  • the threaded end sleeves are connected to one another via a reinforcement sleeve. Instead of the reinforcement sleeve and the threaded end sleeves, a continuous thread bearing can alternatively be used.
  • the workpiece clamping device has a first base body and a second base body. Both base bodies have a contact surface on the end face facing the respective other base body. In a tensioning direction, the contact surfaces of the two base bodies lie opposite one another with a base body spacing. The base body distance is defined by the distance between the contact surface of the first base body and the contact surface of the second base body.
  • the two base bodies are fastened with a base surface on a carrier, in particular fastened in a detachable manner.
  • a fastening device can be used for fastening.
  • Each base body can be fastened to the carrier via a separate fastening device.
  • the carrier can consist of one or more carrier plates. The releasable attachment of the base body to the carrier can be realized by a force-fit and / or form-fit connection.
  • a first clamping body is mounted on the first base body so as to be displaceable in the clamping direction.
  • a second clamping body is mounted on the second base body so as to be displaceable in the tensioning direction.
  • the clamping bodies can each have a clamping surface with which they act on a workpiece for clamping. Additionally or alternatively, a clamping jaw, on which a clamping surface is provided for clamping a workpiece, can be attached to each clamping body.
  • the workpiece clamping device also has a threaded spindle extending in the clamping direction.
  • the threaded spindle has a first threaded section which engages with a mating thread of the first clamping body.
  • the threaded spindle also has a second threaded section which engages with a mating thread of the second clamping body.
  • the first threaded section and the second threaded section have different directions of rotation or directions of rotation.
  • the amount of the pitch is the same in the first thread section and in the second thread section.
  • the threaded spindle has a centering body between the two threaded sections.
  • the centering body has a centering surface on both sides in the clamping direction.
  • the two centering surfaces define a center plane which is arranged centrally between the two centering surfaces in the clamping direction and is oriented at right angles to the clamping direction.
  • the centering body is preferably rotationally symmetrical.
  • the centering body can, for example, have a cylindrical outer contour and in particular be designed as a centering sleeve.
  • the centering body rests with one centering surface on the contact surface of the first base body and with its other, opposite centering surface on the contact surface of the second base body. This ensures that the center plane is located exactly between the two contact surfaces and therefore between the two base bodies. A workpiece can therefore be clamped centered from opposite sides with respect to the central plane by means of the clamping bodies.
  • This configuration of the workpiece clamping device has a very simple structure. To center the threaded spindle relative to the base bodies, it is not necessary to provide a bearing between the base bodies, which supports the threaded spindle on the carrier for the workpiece clamping device.
  • the threaded spindle is supported exclusively or mainly via the clamping body and the base body on the carrier.
  • the threaded spindle is centered via a sliding bearing contact between the two pairs of surfaces, each consisting of a contact surface and a centering surface.
  • each base body has a terminating part which has the contact surface.
  • the terminating parts are preferably designed separately from the base bodies and, in particular, are each detachably fastened to the associated base body.
  • the base body can have a mounting surface oriented essentially at right angles to the tensioning direction.
  • the closure parts are designed as separate elements, for example plate-shaped elements, a material for production can be selected for the closure parts that does not have to match the material of the base body.
  • the closing part can additionally or alternatively be provided with a coating.
  • the terminating part or at least the at least one contact surface of the terminating part can be manufactured precisely by grinding or another highly precise method. The processing of the terminating part to produce the contact surface is simplified if it can be handled independently of the base body.
  • the terminating part has several contact surfaces.
  • Each terminating part preferably has a first contact surface on a first side and a second contact surface on a second side opposite the first side. It is advantageous if each terminating part has a first attachment surface on the first side and a second attachment surface on the second side.
  • the attachment surfaces are designed to detachably attach the terminating part to the assembly surface of the associated base body.
  • each terminating part can be arranged in two different positions or orientations on the associated base body. Either the first contact surface or the second contact surface can come into contact with the adjacent centering surface of the centering body.
  • the contact surfaces can have different distances from the attachment surfaces in the tensioning direction.
  • the first distance and the second distance have different amounts.
  • This configuration of the terminating parts allows tolerances to be compensated for when the base bodies are fastened to the carrier, so that the centering body can be arranged without jamming between either two first contact surfaces or two second contact surfaces of the terminating parts.
  • the difference between the first distance and the second distance can preferably be less than 1 mm.
  • the terminating part can have a step that separates the second attachment surface and the second contact surface, in particular such that the second attachment surface and the second contact surface extend in parallel planes that are offset from one another in the tensioning direction.
  • each terminating part has a recess which is open in particular on a side facing the threaded spindle.
  • the threaded spindle can extend through the recess of the closing part.
  • the recess can have an arc-shaped course at least in one section, the radius of which is greater than the radius of the threaded spindle at the point running through the recess.
  • a surface delimiting the recess of the terminating part can serve as a delimiting surface.
  • the boundary surface is preferably at a distance from the threaded spindle when the threaded spindle is in engagement with the mating threads of the clamping body.
  • the boundary surfaces of the end parts can be used as storage areas for the threaded spindle.
  • the threaded spindle has a first spindle part with the first threaded section and a second spindle part separate therefrom with the second threaded section.
  • the two spindle parts are preferably connected to one another directly or indirectly by a form-fit connection and / or a force-fit connection and / or a material connection and / or an adhesion-promoting connection.
  • the two spindle parts are connected to one another by means of the centering body.
  • the centering body can preferably be sleeve-shaped and accommodate the ends of the spindle parts facing one another. It is advantageous if the connection between the ends of the spindle parts and the centering body is made in each case by a thread engagement and an additional adhesive connection. This ensures that the connection does not come loose when the threaded spindle is driven in a rotating manner.
  • an arrangement can have at least two workpiece clamping devices, the threaded spindles of which extend parallel to one another and at a distance from one another in a longitudinal direction.
  • the two centering bodies are in particular arranged in such a way that they define a common center plane and are symmetrical in the longitudinal direction or are arranged in the middle of this common central plane.
  • a workpiece can be clamped centered on the center plane by means of four or more clamping bodies.
  • the threaded spindle of one workpiece clamping device can extend in a longitudinal direction and the threaded spindle of the further workpiece clamping device can extend in a transverse direction at right angles to the longitudinal direction.
  • the two threaded spindles cross at an intersection.
  • the threaded spindles can be arranged offset from one another in a height direction which is oriented at right angles to the longitudinal direction and at right angles to the transverse direction.
  • the center plane of the centering body of one threaded spindle preferably extends along the longitudinal axis of the respective other threaded spindle.
  • the clamping bodies of different workpiece clamping devices can be designed differently.
  • a workpiece can mainly be held and clamped via the first clamping body and the second clamping body of one of the workpiece clamping devices, while the clamping bodies of the one or more further workpiece clamping devices are used for additional support of the workpiece.
  • an arrangement 10 can have one, two or even more than two workpiece clamping devices 11.
  • a single workpiece clamping device 11 or an arrangement 10 with a plurality of workpiece clamping devices 11 is set up to clamp a workpiece centered with respect to a central plane M.
  • the workpiece clamping devices 11 are essentially constructed in the same way, so that a single workpiece clamping device 11 will first be explained in detail.
  • Each workpiece clamping device 11 has a first base body 12 and a second base body 13.
  • the two base bodies are designed to arrange the workpiece clamping device 11 on a carrier 14.
  • the carrier 14 has a carrier surface 15 that is flat at least in sections.
  • Each base body 12, 13 has an underside which is flat at least in sections and which is designed to be arranged on the support surface 15 of the support 14.
  • each base body 12, 13 can be connected to the carrier 14 in a form-fitting and / or force-fitting manner.
  • each base body 12, 13 has several and, for example, four fastening pins 17 protruding from its underside.
  • the carrier 14 there are holes 18 into which the fastening pins 17 can engage.
  • the holes 18 and the fastening pins 17 are preferably arranged in a predetermined grid, so that the carrier 14 has a hole pattern onto which the base bodies 12, 13 can be inserted at the selected position by means of the fastening pins 17 are.
  • the fastening device 16 includes a plurality of slides 19 which are arranged displaceably in channels 20 of the carrier 14. Each channel 20 opens into a hole 18 so that a free end of the slide 19 can apply a force to a fastening pin 17 inserted into the hole 18.
  • each fastening pin 17 has an all-round fastening groove 21 which tapers radially inward over two inclined or wedge surfaces.
  • the slide has an end section which tapers towards its free end via inclined or wedge surfaces so that it can engage in the fastening groove 21.
  • each base body 12, 13 can have four fastening pins 17, so that the base body is detachably fastened to the carrier 14 by means of four slides 19.
  • the carrier 14 can be formed by several separate carrier plates 14a ( Figures 1 and 3 ). In every carrier plate 14a there is at least one externally accessible actuating element 22 by means of which a plurality of and, for example, four slides 19 in the relevant carrier plate 14a can be displaced essentially synchronously. Depending on the arrangement of the relevant base body 12, 13 in the carrier 14, the base body 12 can be attached to the carrier 14 by actuating a single actuating element 22. It may also be necessary to actuate two or more actuating elements 22 in order to clamp the base body 12 or 13 on the carrier 14.
  • the first base body 12 and the second base body 13 of a common workpiece clamping device 11 are arranged in a clamping direction R with a defined base body spacing x from one another.
  • the first base body 12 has a contact surface on the side facing the second base body 13, which may be a first contact surface 27 or a second contact surface 28.
  • the second base body 13 also has a contact surface on the side facing the first base body 12, which in turn can also be formed by a first contact surface 27 or a second contact surface 28.
  • the facing first contact surfaces 27 or second contact surfaces 28 extend parallel to the central plane M ( Figure 7 ), which is aligned at right angles to the clamping direction R.
  • the base body spacing x is defined between the two facing first contact surfaces 27 or second contact surfaces 28.
  • the center plane M is arranged centrally between the mutually facing contact surfaces.
  • Each terminating part 29 has a first side 30 and a second side 31 opposite the first side 30.
  • the terminating part 29 has the first contact surface 27.
  • the terminating part 29 also has a first attachment surface 32, which is arranged adjacent to the first contact surface 27.
  • the terminating part 29 has the second contact surface 28.
  • the terminating part 29 also has a second attachment surface 33, which is arranged adjacent to the second contact surface 28.
  • the second contact surface 28 is arranged offset in the tensioning direction R relative to the second attachment surface 33 and, according to the example, is separated by a step 34.
  • the first contact surface 27 and the first attachment surface 32 extend, for example, in the same plane.
  • the first contact surface 27, the second contact surface 28, the first mounting surface 32 and the second mounting surface 33 are preferably designed as flat surfaces and extend parallel to one another and, in the assembled state, parallel to the center plane M.
  • the first contact surface 27 has a first distance in the tensioning direction R. d1 from the second attachment surface 33.
  • the second contact surface 28 has a second distance d2 from the first attachment surface 32 in the tensioning direction R. The distances are shown schematically in FIG Figure 5 illustrated.
  • the first attachment surface 32 and the second attachment surface 33 are each set up to rest on a mounting surface 35 of the first base body 12 or the second base body 13 in order to detachably attach the terminating part 29 to the first base body 12 or the second base body 13 by means of a screw connection, for example.
  • a screw connection for example.
  • several and, for example, two screws 36 can be used, as shown schematically in FIGS Figures 4-6 is illustrated.
  • the terminating part 29 can thus be arranged in two different positions or orientations on the mounting surface 35 in that it rests either with the first mounting surface 32 or with the second mounting surface 33 on the mounting surface 35 ( Figures 5 and 6 ).
  • FIG 4 a schematic sectional view along the mounting surface 35 with a view of the terminating part 29 is illustrated, wherein the terminating part 29 with the second attachment surface 33 rests on the mounting surface 35, so that the first side 30 of the terminating part 29 from the mounting surface 35 or the associated first base body 12 or second base body 13 faces away.
  • the end part 29 has a recess 38 on the side facing away from the carrier 14.
  • the recess 38 is open in a height direction H which is oriented at right angles to the tensioning direction R and at right angles to the carrier surface 15.
  • a threaded spindle 39 of the workpiece clamping device 11 can protrude in the clamping direction R into this recess 38.
  • the recess 38 is delimited by an arcuate boundary surface 40.
  • the boundary surface 40 of the threaded spindle 39 lies with the formation of a gap across from.
  • the boundary surface 40 could be in contact with the circumferential surface of the threaded spindle 39, at least in sections.
  • the boundary surfaces 40 of the terminating parts 29 can be used as storage surfaces for the threaded spindle 39.
  • the threaded spindle 39 of the workpiece clamping device 11 extends in the clamping direction R along the first base body 12 and along the second base body 13.
  • the threaded spindle 39 has a first threaded section 41 in the area of the first base body 12 and a second threaded section 42 in the area of the second base body 13
  • the first thread section 41 has a direction of rotation that is opposite to the second thread section 42, the pitch being the same in terms of magnitude.
  • a first clamping body 45 is mounted on the first base body 12 so as to be displaceable in the tensioning direction R.
  • a second clamping body 46 is mounted on the second base body 13 so as to be displaceable in the tensioning direction R.
  • a clamping surface or holding surface for loading a workpiece to be clamped can be present on each clamping body 45.
  • a connecting device for arranging a separate clamping jaw can be present on the clamping body 45, 46, which in turn has a clamping surface or holding surface for loading the workpiece.
  • the first clamping body 45 is in engagement with the first threaded section 41 via a mating thread (not shown).
  • the second clamping body 46 is in engagement with the second threaded section 42 via a mating thread (not shown).
  • the clamping bodies 45, 46 move towards or away from one another around their longitudinal axis of the spindle, depending on the direction of rotation of the threaded spindle 39.
  • the first clamping body 45 covers the same path relative to the first base body 12 as the second clamping body 46 does relative to the second base body 13. This movement of the clamping bodies 45, 46 allows a workpiece to be clamped or released.
  • the threaded spindle 39 is supported exclusively or mainly via the clamping bodies 45, 46 and the base bodies 12, 13 on the carrier 14. As mentioned, when the clamping bodies are replaced or removed, the threaded spindle 39 can be placed on the boundary surfaces 40 of the terminating parts 29 and is therefore roughly pre-positioned for the new arrangement of the clamping bodies 45, 46 on the base bodies 12, 13.
  • the threaded spindle 39 In order to ensure the centered clamping of the workpiece with respect to the center plane M, the threaded spindle 39 must be centered in the clamping direction R.
  • the threaded spindle 39 has a centering body 47 which has a first centering surface 48 facing the first base body 12 and a second centering surface 49 facing the second base body 13.
  • the centering surfaces 48, 49 are in particular in Figure 7 to recognize.
  • the centering surfaces 48, 49 can extend parallel to one another and in particular at right angles to the clamping direction R.
  • the first centering surface 48 rests against the contact surface 27 or 28 of the terminating part 29 arranged on the first base body 12.
  • the second centering surface 49 rests against the contact surface 27 or 28 of the terminating part 29 attached to the second base body 13.
  • the first contact surfaces 27 of the terminating parts 29 face the centering body 47 or, alternatively, the two second contact surfaces 28 face the centering body 47.
  • the centering body 47 is positioned in the clamping direction R exactly between the two end parts 29 and thereby defines the position of the center plane M.
  • the center plane M runs in Clamping direction R centrally between the first centering surface 48 and the second centering surface 49 through the centering body 47.
  • the terminating parts 29 in the preferred exemplary embodiment described here can be attached to the respectively assigned base body 12, 13 in different orientations. If the distance between the mounting surfaces 35 of the two base bodies 12, 13 in the tensioning direction R varies due to mounting tolerances in different mounting positions on the carrier 14, the closing parts 29 can be mounted in the appropriate orientation so that the centering body 47 makes contact with the respective contact surfaces 27 or 28, on the other hand, is not subjected to too high a clamping force in order not to hinder the rotation of the threaded spindle 39 and to avoid excessive wear.
  • first contact surfaces 27 each have a first distance d1 from the assigned mounting surface 35 when they face the centering body 47 and the second contact surfaces 28 each have a second distance d2 from the assigned mounting surface 35 when they are facing the centering body 47 are facing.
  • each terminating part 29 it is not absolutely necessary for each terminating part 29 to provide different distances d1, d2 and / or to be able to be attached to a mounting surface 35 in different orientations.
  • the terminating part 29 can also be plate-shaped, which has parallel surfaces on both sides and thus provides or would provide the same distance between the centering body 47 and the contact surfaces 27, 28 in both orientations. It is also possible to provide terminating parts 29 with different dimensions in the form of a modular system, so that the terminating parts 29 can be selected with the appropriate dimensions. If tolerance compensation or play compensation in the tensioning direction R is not required, a single type of closure part 29 with a single contact surface and a single attachment surface is sufficient.
  • the threaded spindle 39 can be constructed in several parts.
  • the threaded spindle 39 has a first spindle part 50 with the first threaded section 41 and a second spindle part 52 with the second threaded section 42.
  • the threaded sections 41, 42 end at a distance from the respective end part 29 each spindle part 50, 51 has an end section 52.
  • the end section 52 can have an external thread at least in one area, which is designed to be screwed into a corresponding internal thread of the centering body 47.
  • the end section 52 can also be stepped with different diameters in order to form an annular surface that acts as a stop serves and can interact with a corresponding counter-stop surface on or in the centering body 47.
  • the stop and the counter stop By means of the stop and the counter stop, the relative position of each spindle part 50, 51 with respect to the centering body 47 in the clamping direction R can be set very precisely.
  • each spindle part 50, 51 is connected to the centering body 47 by an adhesive connection in addition to the screw connection.
  • centering body 47 has, for example, hollow-cylindrical sections or is hollow-cylindrical, it forms a centering sleeve.
  • FIG. 1-3 different arrangements 10 are illustrated, which can be constructed by means of a workpiece clamping device 11 described above.
  • two workpiece clamping devices 11 are arranged next to one another in such a way that their threaded spindles 39 extend parallel to one another in a longitudinal direction L and are spaced apart from one another in a transverse direction Q, which is aligned at right angles to the longitudinal direction L.
  • the centering takes place in such a way that the two centering bodies 47 are arranged centrally or symmetrically relative to a common center plane M.
  • the threaded spindles 39 of the two workpiece clamping devices 11 are arranged in a crossed manner, forming a crossing point 55.
  • the threaded spindles 39 are arranged offset from one another in the height direction H.
  • One threaded spindle extends in the longitudinal direction L and the other threaded spindle extends at right angles thereto in the transverse direction Q.
  • the arrangement is such that the center plane M defined by the one centering body 47 runs along the longitudinal axis of the respective other threaded spindle.
  • FIG 8 shows a further exemplary embodiment of a workpiece clamping device 11.
  • the base bodies 12, 13 are not connected to the carrier 14 and are illustrated in a kind of exploded view.
  • the construction of the workpiece clamping device 11 corresponds to one of the exemplary embodiments described above, with the difference that each base body 12, 13 is not formed from a single, integral body, but rather has several base body parts.
  • the base bodies 12, 13 each have a first base body part 56 and a second base body part 57. In the longitudinal direction L or in the tensioning direction R, the two base body parts 56, 57 are, in particular, of different lengths.
  • the second main body part 57 can have at most or exactly half the length in the longitudinal direction L as the first main body part 56.
  • connection point between the two main body parts 56, 57 there is preferably a coupling device 58 in order to couple the two main body parts 56, 57 with one another and to align them relative to one another at least in one spatial direction, so that along the two main body parts 56, 57 an exact guidance for the respective clamping body 45, 46 is provided. Adjacent to the coupling device 58, the two base body parts 56, 57 rest against one another with the surfaces facing one another at the connection point.
  • the coupling device 58 can have at least one coupling body 59 which protrudes in the longitudinal direction L or tensioning direction R away from one of the base body parts 56, 57 and engages in an associated coupling recess 60 on the other base body part 57 or 56. Due to the precise dimensioning of the coupling body 59 with the coupling recess 60, the two base body parts 56, 57 can be precisely aligned relative to one another ( Figures 9 and 10 ).
  • the at least one coupling body 59 is screwed to one of the base body parts, for example, on the first base body part 56 and, as an alternative, can also be fastened by other means.
  • the outer dimensions of the coupling body 59 are dimensioned in such a way that, apart from a technically required clearance, they correspond to the inner dimensions of the coupling recess 60 in the transverse direction Q.
  • exact positioning of the two base body parts 56, 57 in the transverse direction Q relative to one another is achieved.
  • the longitudinal direction L and / or in a vertical direction at right angles to the longitudinal direction L and to the transverse direction Q there is play between the at least one coupling body 59 and the associated coupling recess 60. Overdetermination can thereby be avoided.
  • the second base body part 57 has fewer fastening pins 17 than the first base body part 56.
  • the first base body part 56 has at least four and, for example, exactly four fastening pins, while the second base body part 57 has fewer than four and, for example, two fastening pins 17.
  • the exact positioning of the second base body part 57 by means of the fastening device 16 on the carrier 14 is not always guaranteed and the orientation of the two base body parts 56, 57 is additionally predetermined, according to the example, by the coupling device 58, at least in the transverse direction Q.
  • a connecting body 61 can be present, which connects the two base bodies 12, 13 to one another and can thereby bridge an intermediate space between the two base bodies 12, 13.
  • the connecting body 61 is arranged at a distance from the carrier 14 and is not in contact with the carrier 14 or is not attached directly to the carrier 14.
  • the connecting body 61 can form a cover and cover the centering body 47 and / or the terminating parts 29.
  • each base body 12, 13 can have several and, for example, two fastening openings 62 in the area of the end that has the mounting surface 35, for example threaded bores 63 ( Figures 1-3 ).
  • a fastening pin 64 which is connected to the connecting body 61, can engage in the fastening openings 62 in order to fasten the connecting body 61 to the first base body 12 or to the second base body 13.
  • Each fastening pin 64 is formed by a fastening screw 65 which engages in the thread of the threaded bore 63 so that the connecting body 61 is attached to both the first base body 12 and the second base body 13 by a screw connection.
  • the connecting body 61 serves to connect the two base bodies 12, 13 and has no guiding function for positioning the centering body 47.
  • the centering body 47 is positioned exclusively through and between the end parts 29.
  • the aspect of the construction of the base body 12, 13 from several base body parts 56, 57 and their coupling with a coupling device 58 and / or the aspect of the connection of the two base bodies 12, 13 by means of a separate connection body 61 can also be used independently of other described configurations of the workpiece clamping device 11 are used and thus represent separate, independent aspects of the invention.
  • the invention relates to a workpiece clamping device 11 with a first base body 12 on which a first clamping body 45 is mounted displaceably in a clamping direction R, and with a second base body 13 on which a second clamping body 46 is mounted displaceably in the clamping direction R.
  • the two clamping bodies 45, 46 are in engagement with a threaded spindle 39.
  • a contact surface 27 or 28 is arranged on each base body 12, 13 on the side facing the respective other base body 13 or 12. In the tensioning direction R, the contact surfaces are arranged with the formation of a base body spacing x.
  • a centering body 47 of the threaded spindle 39 has centering surfaces 48, 49 which each bear against an associated contact surface 27 or 28 in order to position the threaded spindle in the clamping direction R with as little play as possible.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)
EP21151282.7A 2020-01-17 2021-01-13 Dispositif de serrage de pièce Active EP3851249B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020101064.8A DE102020101064B3 (de) 2020-01-17 2020-01-17 Werkstückspannvorrichtung

Publications (2)

Publication Number Publication Date
EP3851249A1 true EP3851249A1 (fr) 2021-07-21
EP3851249B1 EP3851249B1 (fr) 2022-11-23

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US (1) US11801583B2 (fr)
EP (1) EP3851249B1 (fr)
DE (1) DE102020101064B3 (fr)

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DE102020101062B4 (de) * 2020-01-17 2021-08-12 Lang Technik Gmbh Werkstückspannvorrichtung mit Kopplungskörper zwischen Klemmkörper und Gewindespindel
CN113751948A (zh) * 2021-07-27 2021-12-07 湖南敏锐科技有限公司 一种列车接线盒焊接装置
DE202022104051U1 (de) 2022-07-19 2022-07-25 Kamil Słobiński Spannzange zum Spannen von Werkstücken an Werkzeugmaschinen
CN116299936A (zh) * 2023-02-24 2023-06-23 上海盛相工业检测科技有限公司 一种工业相机镜头系统及3d相机、定焦方法

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US20090315238A1 (en) * 2008-06-19 2009-12-24 Pacific Bearing Company Modular Adjustable Vise
DE202014005498U1 (de) * 2014-07-07 2014-08-12 Kohn Spannwerkzeuge - Mechanische Teilefertigung Gmbh Zweiachsiger Zentrumsspanner
DE102017122112A1 (de) 2017-09-25 2019-03-28 Thiemo Kretzschmar Schraubstockvorrichtung

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EP3851249B1 (fr) 2022-11-23
US11801583B2 (en) 2023-10-31
US20210220967A1 (en) 2021-07-22

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