EP3030379B1 - Griffe de serrage pour dispositif de serrage - Google Patents

Griffe de serrage pour dispositif de serrage Download PDF

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Publication number
EP3030379B1
EP3030379B1 EP14748196.4A EP14748196A EP3030379B1 EP 3030379 B1 EP3030379 B1 EP 3030379B1 EP 14748196 A EP14748196 A EP 14748196A EP 3030379 B1 EP3030379 B1 EP 3030379B1
Authority
EP
European Patent Office
Prior art keywords
clamping
clamping claw
guide
piece
base body
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
EP14748196.4A
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German (de)
English (en)
Other versions
EP3030379A1 (fr
Inventor
Rainer Zimmermann
Peter Steinbach
Volker Göbel
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.)
Andreas Maier GmbH and Co KG
Original Assignee
Andreas Maier GmbH and Co KG
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 Andreas Maier GmbH and Co KG filed Critical Andreas Maier GmbH and Co KG
Publication of EP3030379A1 publication Critical patent/EP3030379A1/fr
Application granted granted Critical
Publication of EP3030379B1 publication Critical patent/EP3030379B1/fr
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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
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B25B5/10—Arrangements for positively actuating jaws using screws
    • B25B5/104—Arrangements for positively actuating jaws using screws with one screw and one clamping lever and one fulcrum element
    • B25B5/105—Arrangements for positively actuating jaws using screws with one screw and one clamping lever and one fulcrum element with one end of the lever resting on a table and the screw being positioned between the ends of the lever

Definitions

  • the present invention relates to a clamping claw for a clamping device for clamping a workpiece on a work surface, the clamping claw comprising a base body and a clamping piece which is held on the base body so as to be displaceable relative to the base body.
  • Such a clamping claw serves to transmit a clamping force from the clamping device to the workpiece to be clamped.
  • the clamping piece can be displaced relative to the base body along a straight displacement path.
  • a clamping direction, along which a clamping force can be transferred from the clamping device to the workpiece to be clamped, is always oriented exactly perpendicular to a longitudinal direction of the base body.
  • a clamping surface of the workpiece, on which the clamping claw is supported when the workpiece is clamped, and a supporting surface of a clamping base or a supporting body, on which the clamping claw is also supported must be at the same height level with respect to the clamping direction.
  • the CN 201 353 704 Y discloses a clamp according to the preamble of claim 1.
  • the present invention has for its object to provide a clamping claw of the type mentioned, which can be used more flexibly, in particular in the clamped state of the workpiece, the clamping surface of the workpiece and the support surface of the clamping base can be at different height levels and / or the clamping direction with the Longitudinal direction of the clamping claw can include an angle other than 90 °.
  • the clamping piece of the clamping claw according to the invention is displaceable relative to the base body along an at least sectionally curved sliding track
  • the clamping piece, in particular a guide part of the clamping piece, with which the clamping piece is slidably guided on the base body can be at different points on the sliding track at different angles be aligned relative to the straight longitudinal direction of the base body.
  • the clamping surface of the workpiece and the support surface of the clamping claw can be at different height levels with respect to the clamping direction.
  • the guide device is designed such that the clamping piece can be displaced relative to the base body by means of the guide device along a displacement path which is curved in its entire course.
  • the sliding track is preferably curved in the same direction over its entire course.
  • the sliding track - viewed from the clamping surface - is concavely curved, preferably over its entire course.
  • the radius of curvature of the sliding track is preferably constant over its entire course or preferably changes continuously along the entire course of the sliding track.
  • the guide device of the clamping claw according to the invention can comprise at least one guide channel which is curved at least in sections.
  • the guide device comprises a guide channel which is curved over essentially its entire length.
  • the guide device comprises two guide channels running essentially parallel to one another.
  • the at least one guide channel of the guide device can have an edge which - viewed from the inside of the guide channel - is convexly curved, preferably over substantially the entire length of the sliding track, and / or have an edge which - seen from the inside of the guide channel - Is concavely curved, preferably over substantially the entire length of the sliding track.
  • the clamping piece comprises a guide part which is displaceably guided by means of the guide device and a pressure piece which can be pivoted relative to the guide part.
  • a tensioning screw of the tensioning device preferably engages the pressure piece of the tensioning piece, so that the orientation of the tensioning direction of the tensioning device relative to the guide piece can be changed by pivoting the pressure piece relative to the guide piece.
  • the clamping direction in the clamped state of the workpiece also runs essentially perpendicular to the clamping surface of the workpiece, to the clamping surface and / or to the support surface of the clamping claw, if the longitudinal direction of the base body of the clamping claw relative to the clamping surface, the clamping surface or Support surface is inclined and / or if a central axis of the guide part is not aligned perpendicular to the longitudinal direction of the base body of the clamping claw, but includes an angle different from 90 ° with the longitudinal direction.
  • the pressure piece can be pivoted continuously relative to the guide part within a predetermined angular range.
  • the pressure piece can be pivoted relative to the guide part from a central position by an angle of at least approximately + 10 ° and an angle of at least approximately - 10 °.
  • the angular range within which the pressure piece can be pivoted relative to the guide part is at least approximately 20 °.
  • the pressure piece comprises a support part and a holding part fixed to the support part.
  • the support part can serve, in particular, to place a clamping washer and / or a clamping nut of the clamping device.
  • the holding part is non-detachably attached to the support part, for example by pressing.
  • the holding part can also be made for the holding part to be releasably attached to the support part, for example by screwing.
  • the holding part of the pressure piece engages behind the guide part of the clamping piece.
  • the holding part can be secured by positive locking on the guide part of the clamping piece.
  • the support part of the pressure piece engages behind the guide part of the clamping piece, so that the support part of the pressure piece is secured to the guide part by positive locking.
  • the guide part of the clamping piece can comprise two guide projections, which are guided so as to be displaceable in two guide channels of the guide device.
  • the guide part of the clamping piece can comprise one or more guide projections which engage in a guide channel of the guide device and extend from a first edge of the guide channel to a second edge of the guide channel opposite the first edge.
  • the guide part is preferably displaceable along a displacement path predetermined, in particular curved, by one or more guide channels, and is particularly preferably prevented from moving relative to the guide channel or relative to the guide channels in a direction perpendicular to the displacement path.
  • the guide part of the clamping piece can be displaced continuously relative to the base body within a displacement path.
  • the guide part of the clamping piece can assume any intermediate displacement position between a first displacement end position and a second displacement end position relative to the base body.
  • the clamping claw comprises a cover which, preferably detachably, on the base body is set.
  • the cover is locked on the base body.
  • Such a cover can in particular have a recess through which the clamping piece extends.
  • Such a recess can in particular be designed as a recess.
  • the clamping piece extends through the recess of the cover in the assembled state of the clamping claw.
  • the pressure piece of the clamping piece extends through the recess in the cover.
  • the base body comprises two side cheeks, which are arranged at least in sections at a distance from one another and are captively connected to one another.
  • the multi-part construction of the base body from two side bolsters offers the advantage of reduced weight and a lower material requirement, yet sufficient mechanical strength is guaranteed in order to be able to transmit a sufficiently high clamping force from the clamping claw to the workpiece to be clamped.
  • the distance between the two side cheeks of the base body increases the outer contour of the contact surface on which the base body of the clamping claw rests on the workpiece to be clamped, without correspondingly requiring more material for the base body.
  • the side cheeks are preferably arranged at a distance from one another in all their sections.
  • Each of the side cheeks of the base body of the clamping claw according to the invention can be designed in one piece or in multiple layers.
  • the side walls are preferably connected to one another by positive locking and / or non-positive locking.
  • the clamping claw comprises at least one connecting element which is positively connected to at least one of the side cheeks.
  • Such a connecting element is preferably formed in one piece.
  • At least one connecting element has at least one rivet head.
  • Such a rivet head can be produced, for example, during the assembly of the clamping claw by press molding, preferably from a rivet head preform.
  • the clamping claw comprises at least one connecting element which is non-positively connected to at least one of the side cheeks.
  • Such a connecting element is also preferably formed in one piece.
  • At least one connecting element is non-positively connected to both side cheeks.
  • At least one connecting element is connected to at least one of the side cheeks, preferably to both side cheeks, by an interference fit.
  • At least one of the side walls is provided with recesses.
  • Such recesses can extend through the respective side cheek or can be formed as depressions on one of the outer surfaces of the side cheek.
  • the area covered by the recesses is at least approximately a quarter of the total area of an outer surface, preferably a main surface, of the respective side cheek.
  • the area of the recesses is at least approximately one third, in particular at least approximately half, of the Total area of an outer surface, preferably a main surface, of the respective side cheek.
  • the side cheek in question contains a guide channel
  • the area of the guide channel is added to the aforementioned area of the recesses.
  • At least one recess has at least one edge section which is at an angle of approximately 20 ° to approximately 50 °, preferably at an angle of approximately 20 ° to approximately 40 °. runs inclined with respect to a direction of the base body of the tensioning claw which is perpendicular to the longitudinal direction and perpendicular to a transverse direction of the base of the clamping claw.
  • At least two recesses enclose a web with one another, the longitudinal direction of which is at an angle of approximately 20 ° to approximately 50 °, preferably at an angle of approximately 20 ° to approximately 40 °, with respect to that perpendicular to the longitudinal direction and perpendicular to Transverse direction of the base body extending direction of the base body of the clamping claw is inclined.
  • At least one recess has at least one rounded corner area.
  • all corner regions are preferably rounded.
  • the base body of the clamping claw comprises a base body lower part and a base body upper part, preferably detachably, fixed to the base body lower part.
  • the lower part of the base body and / or the upper part of the base body are preferably each formed in one piece.
  • a guide part of the clamping piece can be guided in at least one guide channel, which is bounded at the bottom by the lower part of the base body and at the top by the upper part of the base body.
  • the clamping body, on the clamping surface of which the workpiece to be clamped is clamped can be designed, for example, as a machine table or as a clamping pallet.
  • the base body of the clamping claw according to the invention preferably has at least one contact surface for placing the base body on a clamping surface of the workpiece to be clamped and / or on a support surface which is convexly curved at least in sections, so that the base body is at different angular positions relative to the clamping surface or relative to that Support surface can be placed on the clamping surface or on the support surface.
  • the clamping claw is particularly suitable for use in a clamping device which comprises a clamping screw, the longitudinal central axis of which defines the clamping direction of the clamping device.
  • the clamping device shown designated as a whole by 100, is used for clamping a workpiece 102 on a clamping surface 104 of a clamping body 106.
  • the clamping body 106 can be designed, for example, as a machine table or as a clamping pallet.
  • the clamping device 100 comprises a clamping claw 108, which is supported on a clamping surface 110 of the workpiece 102 and on a support surface 112 of a clamping base or a support body 114 during the operation of the clamping device 100.
  • the support body 114 can in particular be formed in one piece with the clamping body 106.
  • the support body 114 is a separate component, which is arranged during the operation of the clamping device 100, for example between the clamping claw 108 and the clamping body 106.
  • the clamp is detailed in the 4 to 12 and comprises a base body 116 with which the clamping claw 108 can be placed on the workpiece 102 and on the support body 114.
  • the base body 116 comprises two side cheeks 118, both of which extend in a longitudinal direction 120 of the base body 116 and are spaced apart from one another in a transverse direction 122 of the base body 116 running perpendicular to the longitudinal direction 120 (distance D in Fig. 11 ).
  • Each of the side cheeks 118 can be single-layered or, as in the embodiment shown in the drawing, multi-layered, in particular two-layered.
  • each side cheek 118 can in particular comprise an outer layer 124 facing away from the respective other side cheek 118 and an inner layer 126 facing the respective other side cheek 118.
  • the inner layer 126 and the outer layer 124 preferably lie flat against one another.
  • Each layer 124, 126 of a side cheek 118 can be designed, for example, in the form of a plate.
  • each layer 124, 126 of a side cheek 118 is preferably constant along the longitudinal direction 120 of the clamping claw 108.
  • the outer layer 124 and the inner layer 126 of a side cheek 118 can have the same thickness d or different thicknesses from one another.
  • the side cheeks 118 of the clamping claw 108 are preferably mirror-symmetrical to one another, with respect to a longitudinal central plane 206 of the clamping claw 108 running parallel to the longitudinal direction 120 and perpendicular to the transverse direction 122 of the clamping claw 108 (see FIG Fig. 8 and 10 ).
  • Each side cheek 118 has a contact surface 128 on its underside, with which the side cheek 118 in question can be applied to the clamping surface 110 of the workpiece 102 and / or to the support surface 112 of the support body 114.
  • the contact surface 128 is preferably curved.
  • the contact surface 128 is convexly curved in the end regions 127 of the clamping claw 108.
  • the side cheeks 118 are connected to one another by means of a plurality of connecting elements 130, which extend in the transverse direction 122 of the base body 116.
  • One or more, for example two, of these connecting elements 130 are essentially cuboid or plate-shaped.
  • One or more, for example two, connecting elements 130 can be designed as one, for example essentially cylindrical, first connecting rod 136 or second connecting rod 138.
  • Each connecting rod 136, 138 comprises a middle section 140 arranged between the side cheeks 118 and two end sections 142 which have a smaller diameter than the middle section 140 and which engage in through openings 144 of complementary design in the side cheeks 118.
  • the end sections 142 of the connecting rods 136, 138 are held in a force-fitting manner on the respectively assigned side cheek 118, so that the two side cheeks 118 are non-positively connected to one another by the connecting rods 136, 138.
  • each side cheek 118 is also non-positively connected to one another by the connecting rods 136, 138.
  • the connecting plates 132, 134 comprise a substantially cuboid central section 146, which is arranged between the side cheeks 118 in the assembled state of the clamping claw 108, and two connecting sections 148 projecting from the central section 146 in the transverse direction 122, which pass through passage openings 150 which are complementary thereto extend through the side cheeks 118 (see in particular Fig. 11 ).
  • the connecting sections 148 of the connecting plates 130, 132 each have a rivet head preform at their respective free end facing away from the central section 146, which comprises an end piece which is connected to a base part of the respective connecting section 148 via two webs is.
  • a recess is arranged between the webs, which separates the end piece from the base part in the initial state of the respective connecting plate 132, 134.
  • the connecting section 148 can be pushed through the respectively assigned passage opening 150 in a side cheek 118.
  • the rivet head preforms of the connecting sections 148 are deformed by compression molding in such a way that the respective end piece lies against the base part and the webs buckle in such a way that the rivet head preform bends into the
  • the rivet head 152 shown in the figures is formed, which has a greater extension in a longitudinal direction of the passage opening 150 than the rivet head preform and than the passage opening 150 itself.
  • the rivet head 152 thus has undercuts 154 which move the rivet head 152 back through the respectively assigned passage opening 150 prevent.
  • the two side cheeks 118 are thus positively connected to one another by the connecting plates 132 and 134 provided with rivet heads 152.
  • each side cheek 118 are also positively connected to one another in the assembled state of the base body 116 by the connecting plates 132 and 134 provided with rivet heads 152.
  • the side cheeks 118 of the base body 116 of the clamping claw 108 can be provided with recesses 156 which preferably extend in the transverse direction 122 of the base body 116 through the respective side cheek 118.
  • the recesses 156 only extend through one of the layers 124, 126 of a multi-layer side cheek.
  • the recesses 156 only form depressions on one of the main surfaces (outer side 158 or inner side 160 parallel thereto, facing the other side cheek 118) of the respective side cheek 118 and do not extend through the entire thickness of the respective side cheek 118 ,
  • the area covered by the recesses 156 on a main surface 158, 160 of a side cheek 118 is preferably at least approximately a quarter of the total area of the relevant main surface 158 or 160 of the side cheek 118 surrounded by the outer contour of the side cheek 118.
  • this area portion of the recesses 156 is at least approximately one third, in particular at least approximately half, of the total area of the respective main surface 158, 160 of the side cheek 118.
  • At least one corner region 162 of at least one recess 156 is rounded, that is to say has no sharp edge.
  • All corner areas 162 of at least one recess 156 are preferably rounded.
  • the recesses 156 can in principle have any shape, for example a circular or polygonal shape.
  • most of the recesses 156 are essentially triangular with rounded corner regions 162.
  • the recesses 156 have rectilinear edge sections 164, it is advantageous if some of these edge sections 164, preferably the majority of these edge sections 164, are at an angle to a direction 165 of the base body 116 which is perpendicular to the longitudinal direction 120 and perpendicular to the transverse direction 122 of the base body 116 in the range from about 20 ° to about 50 °, preferably from about 20 ° to about 40 °.
  • each side cheek 118 is preferably curved, in particular concavely curved, between the end regions 127 of the clamping claw 108, and an upper edge 168 of each side cheek 118 is also preferably curved, in particular convexly curved.
  • a curved guide channel 170 is provided on the same.
  • the curvature of the guide channel 170 is preferably designed such that a lower edge facing the lower edge 166 of the side cheek 118 172 of the guide channel 170, seen from the inside of the guide channel 170, is convexly curved, while an upper edge 174 of the guide channel 170, viewed from the inside of the guide channel 170, is preferably of concave curvature.
  • the guide channel 170 is preferably closer to the upper edge 168 of the side cheek 118 than to the lower edge 166.
  • one or more recesses 156 are arranged between the guide channel 170 and the lower edge 166 of the side cheek 118.
  • the guide channel 170 is formed only in one layer of a multilayer side wall 118, for example in the outer layer 124, while the other layer, for example the inner layer 126, has a recess in the region of the guide channel 170 176 has.
  • a lower edge 178 of the recess 176 can be arranged adjacent to the lower edge 172 of the guide channel 170 and preferably run essentially parallel to the lower edge 172 of the guide channel 170.
  • the lower edge 172 of the guide channel 170 and the lower edge 178 of the recess 176 can together form a stepped contact surface 180 for a guide part 182 of a clamping piece 184 of the clamping claw 108 which is displaceably guided along the guide channels 170 of the side cheeks 118.
  • the clamping piece 184 comprises, in addition to the guide part 182, a pressure piece 186 which can be pivoted relative to the guide part 182.
  • the pressure piece 186 is continuously pivotable relative to the guide part 182 within a predetermined angular range of, for example, approximately +/- 10 ° and is preferably held captively on the guide part 182.
  • the pressure piece 186 comprises a support part 188 for the support of a tensioning washer 190 (see, for example, FIG Fig. 1 and 2 ) and a holding part 192, preferably permanently attached to the support part 188.
  • the support part 188 has, for example, essentially the shape of a spherical segment with a central passage opening 194.
  • the support part 188 rests with its spherical underside on a complementary top of the guide part 182, which enables the pivoting of the support part 188 relative to the guide part 182 while the support part 188 slides on the guide part 182.
  • the holding part 192 essentially has the shape of a cylindrical sleeve, with an upper sleeve section 198 and with a lower sleeve section 202, which preferably has a larger outer diameter than the upper sleeve section 198 and passes through a passage opening 204 in the guide part 182 of the clamping piece 184.
  • the holding part 192 has a, preferably essentially cylindrical, passage opening 238.
  • a lower end region of the lower sleeve section 202 of the holding part 192 projects downward over the guide part 182.
  • This end region of the lower sleeve section 202 is provided with holding projections 206 which project in the direction of the inner sides 160 of the side cheeks 118 and form undercuts through which the holding part 192 is prevented from moving upward through the passage opening 204 in the guide member 182.
  • the holding part 192 and the support part 188 of the pressure piece 186 are fixed to one another so that the support part 188 cannot be detached from the guide part 182.
  • the pressure piece 186 comprising the support part 188 and the holding part 192 is captively held on the guide part 182 of the clamping piece 184 by positive locking.
  • the guide part 182 of the clamping piece 184 comprises two in the assembled state of the clamping claw 108 projecting projections 208 from the longitudinal center plane 206 of the clamping claw 108 towards the side cheeks 118, which each engage and engage in one of the curved guide channels 170 on one of the side cheeks 118 extend from the lower edge 172 of the curved guide channel 170 in question to its upper edge 174.
  • the guide part 182 of the clamping piece 184 can thus be displaced along a curved displacement path 210 predetermined by the curved guide channels 170, but in a direction perpendicular to the displacement path 210 in each case but through the lower edge 172 and the upper edge 174 at a displacement relative to the guide channels 117 and thus hindered relative to the side cheeks 118.
  • the guide channels 170 thus form a guide device 209, by means of which the clamping piece 184 can be displaced relative to the base body 116 along the curved sliding path 210.
  • the guide projections 208 of the guide part 182 are preferably provided on their underside facing away from the support part 188 with a stepped guide surface 218, which are preferably essentially complementary to the stepped support surface 180 of the respectively assigned guide channel 170, so that the guide projections 208 are essentially flat on the Support surface 180 of the respectively assigned guide channel 170 lie on.
  • a first end region 212 and a second end region 214 of each guide channel 170 serve as stops for the guide part 182 of the clamping piece 184, which limit the displacement path of the guide part 182 and thus of the clamping piece 184 in the longitudinal direction 120 of the base body 116 forwards and backwards.
  • the clamping piece 184 is in the in the Fig. 9 and 10 shown shifting middle position, in which the clamping piece 184 is arranged in the middle between its two shifting end positions.
  • the clamping piece 184 can be displaced into a second displacement end position (not shown), in which the guide part 182 of the clamping piece 184 bears against the second end region 214 of the curved guide channels 170.
  • the guide part 182 of the clamping piece 184 is preferably steplessly displaceable within the displacement path from the first displacement end position to the second displacement end position, that is to say in any intermediate displacement position, relative to the base body 116 of the clamping claw 108.
  • the pressure piece 186 can be pivoted relative to the guide part 182 of the tensioning piece 184, preferably by an angle of approximately +/- 10 °, in particular by a substantially flat bearing surface 216 on the To be able to align the side of the support part 188 facing away from the guide part 182 essentially parallel to the clamping surface 104 of the clamping body 106.
  • the clamping claw 108 can comprise a cover 220, which is, preferably detachably, fixed to the base body 116 of the clamping claw 108.
  • the cover 220 is latched to the base body 116.
  • the cover 220 can comprise two side parts 222 which, in the assembled state of the clamping claw 108, preferably lie flat, on the outside 158 of the respectively assigned side cheek 118.
  • These side parts 222 can in particular cover the recesses 156 on the outside 158 and / or on the inside 160 of the respectively associated side cheek 118.
  • the guide channels 170 in the side cheeks 118 are preferably not covered by the side parts 222, so that the position of the guide part 182 of the clamping piece 184 with respect to the end regions 212 and 214 of the guide channels 170 remains easily recognizable from outside the clamping claw 108.
  • the cover 220 can comprise connecting parts 224 which extend in the transverse direction 122 of the clamping claw 108 and connect the two side parts 222 to one another.
  • the connecting parts 224 of the cover 220 are preferably designed such that they are outside the displacement path of the clamping piece 184, so that the displacement of the clamping piece 184 from the first displacement end position into the second displacement end position is not impeded by the cover 220.
  • the cover 220 has a recess 226 between a first connecting part 224a and a second connecting part 224b, through which the pressure piece 186 of the tensioning piece 184 extends.
  • This recess 226 of the cover 220 is laterally bordered by the side parts 222 of the cover 220.
  • the clamping device 100 further comprises a clamping screw 228 with an external thread 230, with a shaft section 232 adjoining the external thread 230 and with a screw head 234 adjoining the end of the shaft section 232 facing away from the external thread 230, which is preferably in the form of a sliding block 236, in particular with a substantially T-shaped cross section.
  • the screw head 234 of the clamping screw 228 is guided in a complementary groove 238 of the clamping body 106, which thus preferably has a substantially T-shaped cross section (see in particular that 1 to 3 ).
  • the external thread 230 of the clamping screw 228 extends during operation of the clamping device 100 through the passage opening 238 of the holding part 192 of the pressure piece 186 of the clamping piece 184 (see FIGS 7 to 10 ) through.
  • the axial direction of the external thread 180 defines a clamping direction 129 of the clamping device 100, along which the clamping claw 108 a clamping force exerts on the workpiece 102.
  • This clamping direction 129 preferably extends essentially perpendicular to the transverse direction 122 of the base body 116 of the clamping claw 108.
  • a clamping nut 242 is screwed onto the end section 240 of the external thread 230 of the clamping screw 228 facing away from the clamping body 106 and abuts against the support part 188 of the pressure piece 186 of the clamping piece 184 via the clamping disk 190 already mentioned above.
  • the workpiece 102 can be subjected to workpiece machining, for example machining.
  • the clamping direction 129 which runs parallel to the axial direction of the clamping screw 228, can include an angle ⁇ different from 90 ° with the straight longitudinal direction 120 of the clamping claw 108, which in particular extends from the central axis of the first connecting rod 136 to the central axis of the second connecting rod 138 runs.
  • the clamping direction 129 can also be oriented substantially perpendicular to the longitudinal direction 120 of the base body 116 of the clamping claw 108.
  • Fig. 2 It can be seen that the support point 244 at which the clamping claw 108 rests on the clamping surface 104 and the support point 246 at which the clamping claw 108 rests on the support surface 112 can be spaced apart from one another by a height difference ⁇ H along the clamping direction 129.
  • the normal direction of the contact surface 128 is always aligned parallel to the normal direction of the clamping surface 104 or the support surface 112.
  • the procedure for producing the clamping device 100 described above is as follows:
  • the side cheeks 118 are cut out of a starting material, for example from a metal sheet, for example punched out or cut out (for example by means of a laser).
  • the side cheeks 118 can thus be designed in particular as web plates.
  • the recesses which will later receive the connecting rods 136 and 138 or the connecting plates 132 and 134, and the guide channels 170 and the recesses 156 can also be made in the side cheeks 118.
  • the guide part 182 is preferably made in one piece from a suitable, preferably metallic, starting material and is arranged between the two side cheeks 118 such that the guide projections 208 of the guide part 182 engage in the guide channels 170 of the side cheeks 118.
  • the side walls 118 are non-positively connected to one another by means of the connecting rods 136 and 138 and by means of the connecting plates 132 and 134 to the base body 116, so that the side walls 118 are captively connected to one another and to the guide part 182 of the clamping piece 184.
  • the support part 188 and the holding part 192 of the pressure piece 186 are produced from a suitable starting material, in particular from a metallic material, are brought up to the guide part 182 from opposite sides and are fixed to one another in a non-detachable manner, in particular by pressing.
  • the cover 220 is preferably produced from a plastic material, for example by an injection molding process, and is detachably connected, in particular by latching, to the base body 116 of the clamping claw 108.
  • the clamping device 100 is then completed by inserting the clamping screw 228 into the passage opening 238 of the pressure piece 186, fitting the clamping disk 190 and screwing the clamping nut 242 onto the end section 240 of the external thread 230 of the clamping screw 228.
  • the base body 116, the guide part 182, the support part 188 and the holding part 192 are preferably formed from a metallic material, for example from a steel material.
  • any other material can be used for these components that has suitable mechanical properties, for example a fiber-reinforced plastic material.
  • FIGS 1 to 12 One in Fig. 13
  • the illustrated second embodiment of a tensioning device 100 differs from that in FIGS 1 to 12 illustrated and described above first embodiment by the configuration of the base body 116 of the clamping claw 108.
  • the base body 116 is not composed of side walls 118 and connecting elements 130, but rather comprises a base body lower part 248 and a base body upper part 250, which is preferably detachably attached to the base body lower part 248.
  • the base body lower part 248 is designed in the form of a frame and comprises two side parts 252 extending in the longitudinal direction 120 of the base body 116, which are connected to one another by two connecting parts 254 extending in the transverse direction 122 of the base body 116.
  • the base body lower part 248 is preferably formed in one piece.
  • the base body lower part 248 is preferably formed from a metallic material, in particular from a steel material.
  • the frame-shaped base body lower part 248 encloses a passage opening 254 through which the clamping screw 228 extends when the clamping device 100 is in the assembled state.
  • the base body upper part 250 is likewise designed in the form of a frame and comprises two side parts 256 which extend in the longitudinal direction 120 and are connected to one another by a central part 258, the central part 258 has a passage opening 260, through which the pressure piece 186 of the tensioning piece 184 extends when the tensioning device 100 is assembled.
  • the base body upper part 250 is preferably formed in one piece.
  • the base body upper part 250 can in particular be formed from a plastic material, in particular as an injection molded part.
  • the base body upper part 250 is preferably latched to the base body lower part 248.
  • the guide channels 170 of the guide device 209 are bounded at the bottom by the base body lower part 248 and at the top by the base body upper part 250.
  • each of the side parts 252 of the base body lower part 248 can have a stepped contact surface 180 on its upper side, which forms the lower edge 172 of a guide channel 170.
  • Lateral edge regions 262 of the base body upper part 250 remain between the through opening 260 of the base body top part 250 and the side parts 256 of the base body top part 250, the underside of which each forms an upper edge 174 of a guide channel 170.
  • the guide channels 170 formed in this way on the base body 116 are curved as in the case of FIGS 1 to 12 illustrated first embodiment of the clamping device 100, and the guide projections 208 of the Guide part 182 of the clamping piece 184 are guided in the same manner as in the first embodiment in the guide channels 170 in such a way that the clamping piece 184 can be displaced relative to the base body 116 along a curved displacement path.
  • the guide channels 170 are preferably designed to be closed towards the outside of the clamping claw 108.
  • the clamping piece 184, the clamping screw 228, the clamping washer 190 and the clamping nut 242 and the clamping body 106 can be designed in exactly the same way in this second embodiment as in the first embodiment described above.
  • the procedure is such that the guide part 182 of the clamping piece 184 is arranged between the lower body part 248 and the upper body part 250, before the upper body part 250, preferably detachably, on the Base body lower part 248 is set, for example by locking.
  • the guide part 182 is held captively between the lower body part 248 and the upper body part 250.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)
  • Connection Of Plates (AREA)

Claims (13)

  1. Griffe de serrage pour un dispositif de serrage (100) permettant de serrer une pièce (102) sur une surface de serrage (104),
    dans laquelle la griffe de serrage (108) comprend un corps de base (116) et un élément de serrage (184), qui est retenu sur le corps de base (116) de manière déplaçable par rapport au corps de base (116), et
    dans laquelle la griffe de serrage (108) comprend un dispositif de guidage (209), au moyen duquel l'élément de serrage (184) peut se déplacer par rapport au corps de base (116) le long d'une trajectoire de déplacement (210) au moins en partie courbée,
    caractérisée en ce
    que l'élément de serrage (184) comprend une partie de guidage (182) guidée de manière déplaçable au moyen du dispositif de guidage (209) et un élément de pression (186) pouvant pivoter par rapport à la partie de guidage (182),
    dans laquelle la partie de guidage (182) de l'élément de serrage (184) peut se déplacer de manière continue par rapport au corps de base (116) à l'intérieur d'une course de déplacement.
  2. Griffe de serrage selon la revendication 1, caractérisée en ce que le dispositif de guidage (209) comprend au moins un canal de guidage (170) au moins en partie courbé.
  3. Griffe de serrage selon la revendication 2, caractérisée en ce que le dispositif de guidage (209) comprend deux canaux de guidage (170) s'étendant sensiblement parallèlement l'un à l'autre.
  4. Griffe de serrage selon l'une quelconque des revendications 1 à 3, caractérisée en ce que l'élément de pression (186) peut pivoter de manière continue par rapport à la partie de guidage (182) à l'intérieur d'une plage angulaire prédéfinie.
  5. Griffe de serrage selon l'une quelconque des revendications 1 à 4, caractérisée en ce que l'élément de pression (186) est retenu de manière imperdable sur la partie de guidage (182).
  6. Griffe de serrage selon l'une quelconque des revendications 1 à 5, caractérisée en ce que l'élément de pression (186) comprend une partie d'appui (188) et une partie de retenue (192) fixée sur la partie d'appui.
  7. Griffe de serrage selon la revendication 6, caractérisée en ce que la partie de retenue (192) est fixée sur la partie d'appui (188) par compression.
  8. Griffe de serrage selon l'une quelconque des revendications 6 ou 7, caractérisée en ce que la partie de retenue (192) de l'élément de pression (186) vient en prise derrière la partie de guidage (182) de l'élément de serrage (184).
  9. Griffe de serrage selon l'une quelconque des revendications 1 à 8, caractérisée en ce que la partie de guidage (182) de l'élément de serrage (184) est retenue de manière imperdable sur le corps de base (116).
  10. Griffe de serrage selon l'une quelconque des revendications 1 à 9, caractérisée en ce que la griffe de serrage (108) comprend un cache (220), qui est fixé sur le corps de base (116).
  11. Griffe de serrage selon la revendication 10, caractérisée en ce que le cache présente un évidement (226) à travers lequel l'élément de serrage (184) s'étend.
  12. Griffe de serrage selon l'une quelconque des revendications 1 à 11, caractérisée en ce que le corps de base (116) comprend deux joues latérales (118), qui sont disposées au moins en partie à distance l'une de l'autre et reliées l'une à l'autre de manière imperdable.
  13. Griffe de serrage selon la revendication 12, caractérisée en ce qu'au moins une des joues latérales (118) est pourvue d'évidements (156).
EP14748196.4A 2013-08-05 2014-08-04 Griffe de serrage pour dispositif de serrage Active EP3030379B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201310215385 DE102013215385A1 (de) 2013-08-05 2013-08-05 Spannpratze für eine Spannvorrichtung
PCT/EP2014/066718 WO2015018789A1 (fr) 2013-08-05 2014-08-04 Griffe de serrage pour dispositif de serrage

Publications (2)

Publication Number Publication Date
EP3030379A1 EP3030379A1 (fr) 2016-06-15
EP3030379B1 true EP3030379B1 (fr) 2020-01-08

Family

ID=51298753

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Application Number Title Priority Date Filing Date
EP14748196.4A Active EP3030379B1 (fr) 2013-08-05 2014-08-04 Griffe de serrage pour dispositif de serrage

Country Status (4)

Country Link
EP (1) EP3030379B1 (fr)
DE (1) DE102013215385A1 (fr)
ES (1) ES2784159T3 (fr)
WO (1) WO2015018789A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102975055B (zh) * 2011-09-07 2015-03-18 朱华丰 一种模具压板
DE102014014353A1 (de) * 2014-10-05 2016-04-07 Wolfgang Rothfuss Spannelement zum Festspannen von Werkstücken und Werkzeugen unterschiedlicher Höhen
CN108818037A (zh) * 2018-07-07 2018-11-16 无锡市海诚机电设备有限公司 一种机床用的可旋转多角度夹持机构

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US893754A (en) * 1907-10-26 1908-07-21 William T Russell Reversible machinist's clamp.
CH160502A (de) * 1931-12-14 1933-03-15 Geissbuehler Ernst Spannkloben mit Bride.
DE945920C (de) * 1941-01-29 1956-07-19 Elisabeth Heuer Geb Wortmann Spannlasche zum Befestigen eines Werkstueckes auf einem Maschinentisch
US2672790A (en) * 1948-10-11 1954-03-23 Walter W Carroll Clamp
US3436072A (en) * 1965-09-14 1969-04-01 Bert N Svenson Self-adjusting workpiece clamp
FR2469243A1 (fr) * 1979-11-13 1981-05-22 Hm Bride universelle
CN201353704Y (zh) * 2009-01-04 2009-12-02 徐孝伟 轴心联动压板

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
WO2015018789A1 (fr) 2015-02-12
EP3030379A1 (fr) 2016-06-15
DE102013215385A1 (de) 2015-02-05
ES2784159T3 (es) 2020-09-22

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