EP4335590B1 - Élément intermédiaire destiné à être disposé entre un dispositif de serrage et un sous-sol et tour de serrage comprenant un élément intermédiaire - Google Patents

Élément intermédiaire destiné à être disposé entre un dispositif de serrage et un sous-sol et tour de serrage comprenant un élément intermédiaire

Info

Publication number
EP4335590B1
EP4335590B1 EP23195839.8A EP23195839A EP4335590B1 EP 4335590 B1 EP4335590 B1 EP 4335590B1 EP 23195839 A EP23195839 A EP 23195839A EP 4335590 B1 EP4335590 B1 EP 4335590B1
Authority
EP
European Patent Office
Prior art keywords
intermediate element
clamping device
clamping
locking
accordance
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
EP23195839.8A
Other languages
German (de)
English (en)
Other versions
EP4335590A1 (fr
Inventor
Peter Steinbach
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 EP4335590A1 publication Critical patent/EP4335590A1/fr
Application granted granted Critical
Publication of EP4335590B1 publication Critical patent/EP4335590B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B25B5/006—Supporting devices for clamps
    • 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
    • B25B5/04—Clamps with pivoted 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
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B25B5/10—Arrangements for positively actuating jaws using screws
    • 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
    • B25B5/16—Details, e.g. jaws, jaw attachments

Definitions

  • the present invention relates to an intermediate element for arrangement between a clamping device for clamping a workpiece and a substrate, to which the intermediate element can be detachably fixed.
  • Such an intermediate element serves to form a clamping tower together with the clamping device, by means of which workpieces can be clamped whose height is greater than the maximum height of workpieces which can be clamped with the clamping device without the intermediate element.
  • the EP 0 533 093 A2 which also shows the preamble of claim 1, and the US 4 120 490 A Disclosing intermediate elements for arrangement between a clamping device for clamping a workpiece and a substrate on which the intermediate element can be detachably fixed, wherein the intermediate element comprises a receptacle for at least partially receiving a positioning area of the clamping device and a locking device for locking the clamping device to the intermediate element.
  • the US 6 957 808 B2 discloses an intermediate element according to the preamble of claim 1.
  • the present invention is based on the objective of creating an intermediate element of the aforementioned type which can be combined with a clamping device to form a stable and easy-to-handle clamping tower.
  • the inclusion of the intermediate element makes it possible to precisely position the clamping device relative to the intermediate element.
  • the locking device makes it possible to securely and releasably attach the clamping device to the intermediate element and then to remove the clamping device and the intermediate element (and any further components).
  • the clamping tower formed by the intermediate elements can be handled as a unit, aligned in a simple manner relative to the clamping point of the workpiece, and reliably and safely fixed to the substrate.
  • the invention provides that the receiving element of the intermediate element comprises at least one guide channel into which the positioning area of the clamping device can be at least partially inserted.
  • At least one guide channel includes a curved boundary wall.
  • the boundary wall can be, in particular, convexly curved.
  • the at least one guide channel comprises a further curved boundary wall which runs at least sectionally essentially parallel to the first curved boundary wall.
  • the intermediate element includes a positioning area which is designed and arranged in such a way that it can be received, at least partially, in the receptacle of a further intermediate element identically designed to the intermediate element, if such a further intermediate element is arranged between the intermediate element and the substrate.
  • the positioning area of the intermediate element is essentially identical to the positioning area of the clamping device.
  • the receptacle of the intermediate element includes a through-opening through which an actuating tool can be passed in order to engage the actuating tool with a fastening means for attaching the intermediate element to the substrate.
  • the locking device preferably comprises a movable locking element which can be brought into engagement with the clamping device.
  • Such a locking element can, for example, include a locking lever that is pivotably held on a housing of the intermediate element.
  • the locking device includes a pre-tensioning element which pre-tensions the locking element into a locking position in which the clamping device is locked with the intermediate element.
  • Such a prestressing element is preferably designed to be elastic.
  • the preload element can be designed as a spring.
  • the preload element is designed as a coil spring and/or as a compression spring.
  • the locking element can be moved from a locking position, in which the locking element causes the clamping device to lock onto the intermediate element, to an unlocking position, in which the locking of the clamping device onto the intermediate element is released, by applying a compressive force.
  • the pressure force can be applied manually by an operator or by means of an operating tool.
  • connection between the clamping device and the intermediate element can be detached without tools, especially without the use of a screwdriver.
  • the intermediate element according to the invention is particularly suitable for use as a component of a clamping tower, wherein the clamping tower comprises a clamping device for clamping a workpiece and at least one intermediate element according to the invention, which can be arranged between the clamping device and a substrate, wherein the clamping device can be locked to the intermediate element, and wherein the clamping device comprises a positioning area which is at least partially received in the receptacle of the intermediate element when the clamping device is locked to the intermediate element.
  • the positioning area of the clamping device borders a recess in the clamping device through which a fastening means can extend when the clamping device is attached directly to the substrate without the use of an intermediate element.
  • the clamping tower can also be used in a modified configuration in which the intermediate element of the clamping tower is not used, but the clamping device is arranged directly on the ground to clamp a workpiece of lower height.
  • the clamping device includes a movable clamping arm which is designed and arranged in such a way that an actuating tool can be guided past the clamping arm or through a passage opening of the clamping arm and through a passage opening of the intermediate element's receptacle in order to bring the actuating tool into engagement with a fastening means for attaching the intermediate element to the substrate.
  • the fastening tool can be designed, for example, as an internal multi-sided key, in particular as an internal hexagon key (Allen key).
  • the clamping tower comprises at least two, preferably identical, intermediate elements according to the invention and/or comprises at least one fastening means for attaching the intermediate element or the clamping device to a substrate.
  • Such a fastening device may in particular include a T-slot nut and/or a fastening screw.
  • the base can, for example, be designed as a machine table of a machine tool.
  • the surface can be provided with one or more T-slots.
  • Figs. 1 to 15 is a combination designated as a whole by 100 of a clamping tower 102, which includes a clamping device 104 for clamping a (not shown) workpiece and an intermediate element 106, and a base 108 in the form of a machine table 110, which includes T-slots 112 that extend along an x-direction 114 of the machine table 110 and are spaced apart from each other along a y-direction 116 oriented perpendicular to the x-direction 114.
  • the intermediate element 106 is arranged between the clamping device 104 and the substrate 108.
  • the clamping device 104 is secured by means of a locking device 118 which will be described in more detail later (see in particular Fig. 6 ) locked to the intermediate element 106.
  • the intermediate element 106 is detachably attached to the substrate 108 in the area of one of the T-slots 112 by means of a fastening means 119.
  • the fastening device 119 preferably comprises a fastening screw 120 and a T-slot nut 122.
  • An actuating tool 124 preferably in the form of an Allen key 126, extends along a lateral boundary wall 128 (see Fig. 6 ) of a clamping arm 130 of the clamping device 104 and through a passage opening 132 of a receptacle 134 of the intermediate element 106 to the fastening screw 120 in order to engage with the fastening screw 120 and to tighten or loosen it.
  • the clamping device 104 serves to clamp the (not shown) workpiece on a clamping surface 136, which can be identical to a top surface of the substrate 108, but can also be offset upwards and downwards in a z-direction 140 perpendicular to the x-direction 114 and perpendicular to the y-direction 116 and/or inclined relative to the top surface 138 of the substrate 108.
  • the clamping device 104 comprises a housing 142, which is designed, for example, in two parts and can comprise a first housing part 144a and a second housing part 144b.
  • the first housing part 144a and the second housing part 144b preferably lie against each other in a contact plane 146, which is aligned parallel to a longitudinal direction 146 of the clamping device 104 and perpendicular to a transverse direction 150 of the clamping device 104.
  • the longitudinal direction 148 and/or the transverse direction 150 of the clamping device 104 are preferably aligned parallel to a support surface 152 of the housing 142.
  • a vertical direction 154 of the clamping device 104 is aligned perpendicular to the longitudinal direction 148 and perpendicular to the transverse direction 150 and thus also perpendicular to the support surface 152 of the housing 142 of the clamping device 104.
  • the two housing parts 144a and 144b are fixed to each other by means of one or more, for example three, fastening elements 156 - preferably detachably.
  • the fastening elements 156 can, for example, each be designed as a screw which passes through a through-hole in one housing part, for example in the second housing part 144b, and is screwed with its (not shown) thread into a complementary internal thread on the other housing part, for example on the first housing part 144a.
  • the housing 142 of the clamping device 104 is provided at its front edge 158 with a positioning area 160 - for example, essentially U-shaped - which serves to position the clamping device 104 on the intermediate element 106 of the clamping tower 102 or - in the case of an alternative use of the clamping device 104 without the intermediate element 106 - to accommodate a fastening means 119 for attaching the clamping device 104 directly to the substrate 108.
  • a positioning area 160 - for example, essentially U-shaped - which serves to position the clamping device 104 on the intermediate element 106 of the clamping tower 102 or - in the case of an alternative use of the clamping device 104 without the intermediate element 106 - to accommodate a fastening means 119 for attaching the clamping device 104 directly to the substrate 108.
  • Such a fastening device 119 can, for example, comprise a fastening screw 120 and a T-slot nut 122, wherein the fastening screw 120 is screwed with its external thread into a complementary internal thread of the T-slot nut 122.
  • the clamping device 104 further comprises the clamping arm 130 which is pivotably held on the housing 142 about a pivot axis 162.
  • the pivot axis 162 of the clamping arm 130 is aligned parallel to the transverse direction 150 of the clamping device 104.
  • the clamping arm 130 comprises a clamping section 164, which extends through an outlet opening 166 on the front of the housing 142, bordered by the housing parts 144a and 144b, into an outer space 166 of the housing 142.
  • a pressure piece 172 is arranged at one of the free end regions 170 of the clamping arm 130, which is located away from the pivot axis 162 and serves to transmit a clamping force from the clamping device 104 to the workpiece to be clamped.
  • the pressure piece 172 is preferably pivotally mounted on the clamping arm 130 about a pressure piece pivot axis 174 relative to the free end region 170 of the clamping arm 130.
  • the pressure piece 172 can be formed in one piece.
  • the pressure piece 172 comprises a pressure piece base body which is connected to the clamping arm 130 and a pressure piece insert which is detachably connected to the pressure piece base body.
  • the detachable connection between the pressure piece insert and the pressure piece base makes it possible to replace the pressure piece insert with a differently designed pressure piece insert.
  • the pressure piece 172 has a clamping surface 176 which rests against the workpiece when the clamping device 104 is used to clamp a workpiece.
  • the clamping surface 176 can, for example, be essentially flat.
  • the clamping device 104 In order to pivot the clamping arm 130 of the clamping device 104 about the pivot axis 162 into a desired working position in which the clamping surface 176 of the pressure piece 172 rests against the workpiece to be clamped, the clamping device 104 comprises a movement device designated as a whole by 178, which includes a clamping screw 180 that is rotatably mounted about a longitudinal axis 182 of the clamping screw 180 (see Fig. 13 ).
  • the clamping screw 180 has a thread 184, which is located in the Fig. 13 The working state shown is in engagement with a gear ring segment 186, which is formed on an engagement section 188 of the clamping arm 130.
  • the engagement section 188 of the clamping arm 130 is arranged on the side of the pivot axis 162 of the clamping arm 130 facing away from the free end region 170 of the clamping arm 130.
  • the clamping screw 180 further comprises a bearing end part 190, by means of which the clamping screw 180 is pivotably mounted relative to the housing 142.
  • the bearing end part 190 is detachably fixed to an end area 194 of a shaft 196 of the clamping screw 180 by means of a fastening screw 192.
  • the thread 184 of the clamping screw 180 is formed on the shaft 196 of the clamping screw 180.
  • annular stop 198 is arranged, which prevents the clamping screw 180 from moving downwards along its longitudinal axis 182 when it is not engaged with the engagement section 188 of the clamping arm 130.
  • the bearing end part 190 comprises a bearing section 200, which has a partially spherically formed outer contour.
  • the sectionally spherically shaped bearing section 200 of the clamping screw 180 is arranged in a sectionally complementary bearing receptacle 202 of the housing 142 of the clamping device 104, so that the clamping screw 180 can be pivoted along the sectionally spherically shaped contact surface between the bearing section 200 of the bearing end part 190 on the one hand and the bearing receptacle 202 on the other.
  • the longitudinal axis 182 of the clamping screw 180 is preferably oriented essentially perpendicular to the bearing surface 152 of the housing 142 of the clamping device 104 and thus essentially parallel to the vertical direction 154 of the clamping device 104.
  • an actuating end part 204 is formed, on which an operator can grip by hand or by means of a tool in order to turn the clamping screw 180 about its longitudinal axis 182 and thereby move the clamping arm 130 into a desired working position.
  • the actuating end part 204 can in particular be designed as a clamping screw head.
  • the actuating end part 204 preferably has a polygonal cross-section - perpendicular to the longitudinal axis 182 of the clamping screw 180 - for example a hexagonal cross-section.
  • a guide section 206 of the clamping screw 180 located between the actuating end part 204 and the thread 184 of the clamping screw 180, passes through a guide opening 208 in a guide element 210 of the clamping device 104.
  • the guide element 210 is slidably guided on the housing 142 of the clamping device 104 such that it is guided by the in Fig. 13
  • the clamping screw 180 can be moved from the engagement position shown, in which it engages with the clamping arm 130, to a release position, in which it is out of engagement with the clamping arm 130, and can be moved from the release position back to the engagement position.
  • the clamping device 104 can further comprise a (not shown) pre-tensioning device which guides the guide element 210 into the Fig. 13 The depicted engagement position is pre-tensioned.
  • the guide element 210 and the pre-tensioning device form components of a decoupling device of the clamping device 104, by means of which the thread 184 of the clamping screw 180 can be disengaged from the engagement section 188 of the clamping arm 130.
  • This decoupling device further comprises a locking device by means of which the guide element 210 can be locked in the engagement position and/or in the release position relative to the housing 142.
  • the locking device can comprise one or more locking parts which are movable between a locking position, in which the locking parts lock the guide element 210 in the engagement position or in the release position, and a disengagement position, in which the locking parts allow movement of the guide element 210 from the engagement position to the release position or from the release position to the engagement position.
  • the movement of the locking part or parts from the locking position to the unlocking position or from the unlocking position to the locking position preferably takes place along the transverse direction 150 of the clamping device 104.
  • Each locking element is provided at least at one end projecting from the housing 142 away from the housing with an actuating element 212, which an operator can grasp to move the respective locking element into the unlocking position.
  • an operator applies pressure to one or both of the actuating elements 212 simultaneously in order to move the locking part or parts against the elastic restoring force of a spring element of the locking device into the unlocking position.
  • Each of the actuating elements 212 can be designed as an actuating button.
  • the guide element 210 is in the engagement position and the at least one locking part of the locking device is in the locking position, the locking part or parts of the locking device are inserted into the
  • the unlocking position is transferred by an operator grasping at least one of the actuating elements 212 and moving it along the transverse direction 150 of the clamping device 104.
  • At least one locking element initiates a movement of the guide element 210 from the in Fig. 13
  • the depicted engagement position is free in the release position, whereby the guide element 210 - in the direction of view of the Fig. 13 seen - parallel to the longitudinal direction 148 of the clamping device 104 is moved to the right.
  • the movement of the guide element 210 from the in Fig. 13 The engagement position shown in the (not shown) release position is achieved by the operator, who is acting on at least one of the actuating elements 212, moving the actuating element 212 and thus the at least one locking part in the longitudinal direction 148 of the clamping device 104 from the front of the housing 142, where the clamping arm 130 exits the housing 142, to the rear, towards the back of the housing 142.
  • the at least one locking part is moved back into the detent position by a spring element of the detent device, in which the at least one detent element locks the guide element 210 in the release position.
  • the engagement section 188 of the clamping arm 130 is disengaged from the thread 184 of the clamping screw 180, so that the clamping arm 130 can be pivoted from a first working position, for example near the upper end position of the clamping arm 130, to any second working position, for example near a lower end position of the clamping arm 130, independently of a rotation of the clamping screw 180 relative to the housing 142 of the clamping device 104.
  • the guide element 210 is moved from the release position back into the engagement position by an operator moving the at least one locking part by means of at least one of the actuating elements 212 against the elastic restoring force of the spring element of the locking device from the detent position, in which the guide element 210 is locked in its release position, to the undetent position, in which the at least one locking part releases a movement of the guide element 210 from the release position to the engagement position.
  • the guide element 210 which has been released from the locking position in the release position, is moved by the preloading device of the decoupling device of the clamping device 104, in particular a preload spring, from the release position to the engagement position (i.e. along the longitudinal direction 148 of the clamping device 104 away from the rear of the housing 142 to the front of the housing 142, where the clamping arm 130 exits the housing 142), so that the thread 184 of the clamping screw 180 is again engaged with the engagement section 188 of the clamping arm 130.
  • the preloading device of the decoupling device of the clamping device 104 in particular a preload spring
  • the at least one locking part of the locking device is moved along the transverse direction 150 of the clamping device 104 from the disengagement position to the locking position, so that the guide element 210 is locked in the engagement position and secured against moving back into the release position.
  • the clamping device 104 comprises an upper chip guard element 214 and/or a lower chip guard element 216, wherein these chip guard elements 214, 216 each at least partially cover a space between two opposing inner walls 218a, 218b of the housing 142 of the clamping device 104, so that an interior space 220 of the housing 142, in which the engagement section 188 of the clamping arm 130 and the thread 184 of the clamping screw 180 are arranged, is protected by the chip guard elements 214, 216 against the ingress of chips and/or other contaminants from the outer space 168 of the housing 142.
  • the upper splinter guard element 214 is fixed to a ceiling wall 222 of the housing 142 and extends to an upper circumferential surface 224 of the clamping arm 130 or at least to the vicinity of this upper circumferential surface 224.
  • An edge section of the upper chip protection element 214 facing the clamping arm 130 preferably rests against the upper circumferential surface 224 of the clamping arm 130 or is spaced away from the upper circumferential surface 224 of the clamping arm 130 by less than 2 mm, in particular by less than 1 mm.
  • the lower chip protection element 216 is fixed to a bottom wall 226 of the housing 142 and extends to a lower circumferential surface 228 of the clamping arm 130 or at least to the vicinity of the lower circumferential surface 228.
  • an edge section of the lower chip protection element 216 facing the clamping arm 130 rests against the lower circumferential surface 228 of the clamping arm 130 or is spaced away from the lower circumferential surface 228 of the clamping arm 130 by less than 2 mm, in particular by less than 1 mm.
  • Each of the chip protection elements 214, 216 can be essentially plate-shaped and/or essentially sheet-shaped.
  • the free end region 170 of the clamping arm 130 has a longitudinal center plane 230 which passes through the longitudinal axis 182 of the clamping screw 180, preferably regardless of whether the clamping screw 180 is in the engagement position or in the release position and preferably regardless of the working position of the clamping arm 130.
  • the clamping arm 130 is provided with a bend 234, which is designed and arranged on the clamping arm 130 such that a side wall 236 of the clamping arm 130 facing the positioning area 160 of the clamping device 104 is offset in the bent area 238 of the clamping arm 130 by the distance ⁇ along the transverse direction 150 of the clamping device 104 relative to the same side wall 236 in the free end area 170 of the clamping arm 130, specifically from a lateral edge 240 of the positioning area. 160 away from this lateral edge 240 of the positioning area 160 towards an inner wall 218b of the housing 142 facing away from this lateral edge 240.
  • the actuating tool 124 extends laterally past the cranked area 238 of the clamping arm 130 to the passage opening 132 of the receptacle 134 of the intermediate element 106, which is arranged centrally on the positioning area 160 of the clamping device 104, and through this passage opening 132 to the recess 242' of the intermediate element 106, which is bordered by the positioning area 160'.
  • the actuating tool 124 preferably designed as an internal hexagon key 126, preferably comprises a long straight tool section 244, a short straight tool section 246 and a curved tool section 248 connecting the short straight tool section 246 and the long straight tool section 244.
  • the long straight tool section 244 can extend laterally past the clamping arm 130 from the cranked area 238 of the clamping arm 130 through the passage opening 132 of the receptacle 134 of the intermediate element 106 to the fastening means 119 arranged at the recess 242' of the positioning area 160' of the intermediate element 106, in particular to the fastening screw 120 of the fastening means 119, when the clamping arm 130 is in its upper end position.
  • the angle formed by the longitudinal axis of the long straight tool section 244 of the actuating tool 124 with the vertical direction 154 of the clamping device 104 when the actuating tool 124 extends laterally from above the clamping arm 130 onto the cranked area 238 the angle of the clamping arm 130 past and through the passage opening 132 of the receptacle 134 of the intermediate element 106 to a fastening means 119 arranged at the recess 242' of the positioning area 160' of the intermediate element 106 is preferably less than 10°, in particular less than 5°.
  • the T-slot nut 122 is inserted into a selected T-slot 112 of the machine table 110.
  • the clamping tower 102 is positioned on the base 108 such that the recess 242' of the intermediate element 106 is located above the T-slot nut 122 in the vertical direction 154 of the clamping device 104, and the fastening screw 120 is inserted into the recess 242' so that its thread engages with the internal thread of the T-slot nut 122.
  • the actuating tool 124 is then brought into engagement with the head of the fastening screw 120 such that the long, straight tool section 244 extends from the fastening screw 120 through the passage opening 132 of the receptacle 134 of the intermediate element 106 and laterally past the cranked area 238 of the clamping arm 130 of the clamping device 104 to the area above the clamping arm 130, as shown in the Figs. 1 to 6 is shown.
  • an operator grasps the short straight tool section 246 of the actuating tool 124 to rotate the long straight tool section 244 about its longitudinal axis and thereby screw the fastening screw 120, which is engaged with the actuating tool 124, into the internal thread of the T-slot nut 122 until the T-slot nut 122 and the housing 232 of the intermediate element 106 are clamped against the base 108, in particular the machine table 110, so that the clamping tower 102 is detachably fixed to the base 108.
  • the in the Figs. 19 to 26 The separately shown intermediate element 106 serves to increase the distance between the substrate 108 and the clamping device 104 if necessary, in order to clamp larger workpieces using the clamping tower 102, which could not be clamped using the clamping device 104 which is attached directly to the substrate 108.
  • the intermediate element 106 comprises the housing 232, which includes a bottom wall 250, a ceiling wall 252, two side walls 254a, 254b connecting the bottom wall 250 and the ceiling wall 252, and a rear wall 256 connecting the bottom wall 250 and the ceiling wall 252 and the two side walls 254a, 254b.
  • the intermediate element 106 is provided on its top surface 260 with the receptacle 134, which at least partially accommodates the positioning area 160 of the clamping device 104 when the clamping device 104 is arranged on the intermediate element 106.
  • the receptacle 134 comprises a base area 262, which extends upwards from the top 260 of the intermediate element 106 along the vertical direction 154, and an undercut area 264 adjoining the base area 262 in the vertical direction 154, which projects beyond the base area 262 of the receptacle 134 in the transverse direction 150, preferably on both sides.
  • Each of the parts of the undercut area 264 that project beyond the base area 262 in the transverse direction 150 forms an undercut projection 266.
  • Each of the undercut projections 266 has a convexly curved first boundary wall 268 on its underside facing the top surface 260 of the intermediate element 106.
  • An end area 272 of the boundary wall 268 facing a front side 270 of the intermediate element 106 is oriented essentially parallel to the longitudinal direction 148 and the transverse direction 150 and essentially perpendicular to the vertical direction 154.
  • each first boundary wall 268 of each undercut projection 266 the upper surface 260 of the intermediate element 106 is formed as a curved second boundary wall 274, which has a concave curvature.
  • An end region 276 of the second boundary wall 274 facing the front side 270 of the intermediate element 106 is preferably oriented essentially parallel to the longitudinal direction 148 and the transverse direction 150 and essentially perpendicular to the vertical direction 154.
  • a guide channel 280 of the receiving 134 forms the boundaries of a guide channel 280 of the receiving 134: a first boundary wall 268, a second boundary wall 274 and a side wall 278 of the base area 262 of the receiving 134, preferably oriented substantially parallel to the longitudinal direction 148 and/or parallel to the vertical direction 154; in each of these, a section of the positioning area 160 of the clamping device 104 can be at least partially inserted in order to position the clamping device 104 on the intermediate element 106.
  • the clamping device 104 is brought from the rear side of the receptacle 134 of the intermediate element 106, which faces away from the front side 270 of the intermediate element 106, to the top side 260 of the intermediate element 106, as shown in Fig. 18 depicted.
  • the underside 258 of the clamping device 104 is preferably inclined at an acute angle ⁇ to the top side 260 of the intermediate element 106.
  • the angle of inclination ⁇ is preferably at least 10° and/or preferably at most 20°.
  • the clamping device 104 is moved towards the receptacle 134 of the intermediate element 106 until the positioning area 160 of the clamping device 104 enters the guide channels 280 of the intermediate element 106, as shown in the Fig. 16 and 17 is shown.
  • the guide channels 280 Due to the convex curvature of the first boundary walls 268 of the guide channels 280, the guide channels 280 widen towards the rear of the receptacle 134, creating an insertion funnel which facilitates the insertion of the positioning area 160 of the clamping device 104 into the guide channels 280 of the intermediate element 106.
  • the upper surface 282 of the positioning area 160 of the clamping device 104 slides along the first limiting walls 268 of the guide channels 280, thereby automatically moving the lower surface 258 of the clamping device 104 towards the upper surface 260 of the intermediate element 106, reducing the angle of inclination ⁇ , until the lower surface 258 of the clamping device 104 is in essentially full contact with the upper surface 260 of the intermediate element 106, as shown in the Fig. 10 , 13 and 15 is shown.
  • the front edge 158 of the positioning area 160 of the clamping device 104 is preferably substantially flush with the front 270 of the intermediate element 106 and with the front of the receptacle 134 of the intermediate element 106.
  • the first boundary walls 268 and the second boundary walls 274 of the guide channels 280 of the intermediate element 106 are spaced apart along the vertical direction 154 so far that the positioning area 160 of the clamping device 104 is held on the intermediate element 106 with essentially no play or with only slight play along the vertical direction 154.
  • the dimensions of the recess 242 of the clamping device 104 which is bounded by the positioning area 160 of the clamping device 104, along the longitudinal direction 148 and along the transverse direction 150, essentially correspond to the dimensions of the base area 262 of the receptacle 134 of the intermediate element 106 along the longitudinal direction 148 and along the transverse direction 150, respectively, so that the receptacle 134 forms a stop for the movement of the clamping device 104 along the longitudinal direction 148 towards the front 270 of the intermediate element 106 and the clamping device 104 is secured by the receptacle 134 against movement relative to the intermediate element 106 along the transverse direction 150.
  • an anti-rotation device 284 is provided on the upper surface 260 of the intermediate element 106, which is, for example, a projection with a non-rotationally symmetrical
  • the cross-section can be designed, for example, with an essentially rectangular cross-section (see in particular the Figs. 19 to 21 as well as 25 and 26).
  • the anti-rotation device 284 of the intermediate element 106 can engage with a complementary anti-rotation recess on the underside 258 of the clamping device 104, so that the engagement between the anti-rotation device 284 on the housing 232 of the intermediate element 106 and the anti-rotation recess arranged on the underside 258 of the clamping device 104 prevents the housing 142 of the clamping device 104 from rotating relative to the housing 232 of the intermediate element 106.
  • an anti-rotation device designed as a projection is arranged on the underside 258 of the clamping device 104 and that a complementary anti-rotation recess is provided on the top side 260 of the intermediate element 106.
  • the receptacle 134 is provided with the passage opening 132, which is preferably formed substantially in the middle of the receptacle 134 and can, for example, be substantially cylindrical.
  • the locking device 118 is provided, by means of which the clamping device 104 can be locked to the intermediate element 106.
  • the locking device 118 comprises a locking element 288, which is arranged in a recess 290 on the rear wall 256 of the housing 232 of the intermediate element 106 and is pivotably held on lateral boundary walls of the recess 290 about a pivot axis 292 relative to the housing 232 of the intermediate element 106.
  • the locking element 288 is designed as a two-armed locking lever 294, which comprises a first lever arm 296 arranged below the pivot axis 292 and a second lever arm 298 arranged above the pivot axis 292.
  • the locking device 118 comprises an elastic pre-tensioning element 302, which is supported on one side by the housing 232 of the intermediate element 106 and on the other side by the first lever arm 296 of the locking element 288.
  • a first end region 304 of the preloading element 302 engages in a blind bore 306 on the rear wall 256 of the housing 232, and a second end region 308 of the preloading element 302 engages in a recess 310 on a front face 312 of the locking element 288 facing the housing 232 of the intermediate element 106.
  • the prestressing element 302 is preferably designed to be elastic.
  • the preload element 302 is designed as a spring, especially preferably as a coil spring and/or as a compression spring.
  • the second lever arm 298 of the locking element 288 has a detent lug 314.
  • the locking tab can, for example, be wedge-shaped.
  • the locking lug 314 of the locking element 288 engages in a locking recess 316, which is provided on a rear wall 318 of the housing 142 of the clamping device 104 facing away from the positioning area 160 of the clamping device 104, when the clamping device 104 is positioned in its working position on the intermediate element 106.
  • the locking lug 314 of the locking element 288 engages behind an area of the bottom wall 226 of the clamping device 104, so that the housing 142 of the clamping device 104 is secured against movement away from the top 260 of the intermediate element 106 along the vertical direction 154 by positive locking and is thus locked to the intermediate element 106.
  • the locking of the clamping device 104 on the intermediate element 106 can be released by an operator pressing against the first lever arm 296 of the locking element 288 with a finger or a tool, so that the first lever arm 296 is pivoted against the restoring force of the preloading element 302 into the recess 290 on the rear wall 256 of the housing 232 of the intermediate element 106.
  • the clamping device 104 can be lifted at its rear so that the underside 258 of the clamping device forms an acute angle ⁇ with the top side 260 of the intermediate element 106, and subsequently the clamping device 104 can be moved along the longitudinal direction 148 relative to the intermediate element 106 so that the positioning area 160 of the clamping device 104 comes out of engagement with the guide channels 280 of the receptacle 134 of the intermediate element 106.
  • the clamping device 104 is detached from the intermediate element 106 and can be moved away from the intermediate element 106.
  • connection between the clamping device 104 and the intermediate element 106 of the clamping tower 102 can be detached without tools, in particular without the use of a screw tool.
  • the intermediate element 106 is provided at the front edge of its bottom wall 250 with the positioning area 160', which is designed and arranged in such a way that it can be received at least partially in the receptacle 134 of a further intermediate element identical to the first intermediate element 106, if such a further intermediate element is arranged between the intermediate element and the substrate.
  • the positioning area 160' of the intermediate element 106 is designed and arranged on the bottom wall 250 of the intermediate element 106 in the same way as the positioning area 160 of the clamping device 104 on the bottom wall 226 of the housing 142 of the clamping device 104.
  • the intermediate element 106 is further provided in the rear area of the bottom wall 250 of the housing 232 with an anti-rotation recess 320, which is complementary to the anti-rotation feature 284 on the top 260 of the intermediate element 106 and is arranged vertically below the anti-rotation feature 284 along the vertical direction 154, so that the anti-rotation feature 284 of the further intermediate element 106 can engage in the anti-rotation recess 320 of the first intermediate element 106 when the first intermediate element 106 is placed on the second intermediate element 106.
  • the intermediate element 106 has a locking recess 316 in the lower area of the rear wall 256 of the housing 232, into which the locking lug 314 of the further intermediate element 106 can engage in order to lock the first intermediate element 106 to the second intermediate element 106 when the first intermediate element 106 is placed on the second intermediate element 106.
  • the locking recess 316 on the rear wall 256 of the housing 232 of the intermediate element 106 is designed exactly like the locking recess 316 on the rear wall 318 of the housing 142 of the clamping device 104.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)

Claims (13)

  1. Élément intermédiaire à disposer entre un dispositif de serrage (104) pour le serrage d'une pièce à usiner et un support (108) sur lequel l'élément intermédiaire (106) peut être fixé de manière amovible,
    dans lequel l'élément intermédiaire (106) comprend un logement (134) pour recevoir au moins partiellement une zone de positionnement (160) du dispositif de serrage (104) et un dispositif de verrouillage (118) pour verrouiller le dispositif de serrage (104) sur l'élément intermédiaire (106) et dans lequel le logement (134) de l'élément intermédiaire (106) comprend au moins un canal de guidage (280) dans lequel la zone de positionnement (160) du dispositif de serrage (104) peut être au moins partiellement insérée,
    caractérisé en ce
    que l'au moins un canal de guidage (280) comprend une paroi de délimitation courbée (268).
  2. Élément intermédiaire selon la revendication 1, caractérisé en ce que le au moins un canal de guidage (280) comprend une autre paroi de délimitation courbée (274), laquelle s'étend au moins par sections sensiblement parallèlement à la première paroi de délimitation courbée (268).
  3. Élément intermédiaire selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que l'élément intermédiaire (106) comprend une zone de positionnement (160'), laquelle est réalisée et disposée de sorte qu'elle peut être reçue au moins partiellement dans le logement (134) d'un autre élément intermédiaire (106) réalisé de manière identique à l'élément intermédiaire (106), lorsqu'un tel autre élément intermédiaire (106) est disposé entre l'élément intermédiaire (106) et le support (108).
  4. Élément intermédiaire selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le logement (134) de l'élément intermédiaire (106) comprend une ouverture de passage (132) à travers laquelle un outil d'actionnement (124) peut être guidé pour mettre l'outil d'actionnement (124) en prise avec un moyen de fixation (119) pour la fixation de l'élément intermédiaire (106) sur le support (108).
  5. Élément intermédiaire selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le dispositif de verrouillage (118) comprend un élément de verrouillage mobile (288), lequel peut être mis en prise avec le dispositif de serrage (104).
  6. Élément intermédiaire selon la revendication 5, caractérisé en ce que l'élément de verrouillage (288) comprend un levier de verrouillage (294) maintenu de manière pivotante sur un boîtier (232) de l'élément intermédiaire (106).
  7. Élément intermédiaire selon l'une quelconque des revendications 5 ou 6, caractérisé en ce que le dispositif de verrouillage (118) comprend un élément de précontrainte (302), lequel précontraint l'élément de verrouillage (288) dans une position de verrouillage.
  8. Élément intermédiaire selon l'une quelconque des revendications 5 à 7, caractérisé en ce que l'élément de verrouillage (288) peut être déplacé par exercice d'une force de pression à partir d'une position de verrouillage dans laquelle l'élément de verrouillage (288) entraîne un verrouillage du dispositif de serrage (104) sur l'élément intermédiaire (106) dans une position de déverrouillage dans laquelle le verrouillage du dispositif de serrage (104) sur l'élément intermédiaire (106) est levé.
  9. Élément intermédiaire selon l'une quelconque des revendications 1 à 8, caractérisé en ce que la liaison entre le dispositif de serrage (104) et l'élément intermédiaire (106) est libérable sans outil.
  10. Tour de serrage,
    comprenant un dispositif de serrage (104) pour le serrage d'une pièce à usiner et au moins un élément intermédiaire (106) selon l'une quelconque des revendications 1 à 9, lequel peut être disposé entre le dispositif de serrage (104) et un support (108), dans laquelle le dispositif de serrage (104) peut être verrouillé sur l'élément intermédiaire (106),
    et dans laquelle le dispositif de serrage (104) comprend une zone de positionnement (160), laquelle est au moins partiellement reçue dans le logement (134) de l'élément intermédiaire (106) lorsque le dispositif de serrage (104) est verrouillé sur l'élément intermédiaire (106).
  11. Tour de serrage selon la revendication 10, caractérisée en ce que la zone de positionnement (160) du dispositif de serrage borde un évidement (242) du dispositif de serrage (104) à travers lequel un élément de fixation (156) peut s'étendre lorsque le dispositif de serrage (104) est fixé directement sur le support (108) sans utilisation d'un élément intermédiaire (106).
  12. Tour de serrage selon l'une quelconque des revendications 10 ou 11, caractérisée en ce que le dispositif de serrage (104) comprend un bras de serrage (130) mobile, lequel est réalisé et disposé de sorte qu'un outil d'actionnement (124) peut être guidé le long du bras de serrage (130) ou à travers une ouverture de passage (132) du bras de serrage (130) et à travers une ouverture de passage (132) du logement (134) de l'élément intermédiaire (106) pour mettre l'outil d'actionnement (124) en prise avec un moyen de fixation (119) pour fixer l'élément intermédiaire (106) sur le support (108).
  13. Tour de serrage selon l'une quelconque des revendications 10 à 12, caractérisée en ce que la tour de serrage (102) comprend au moins deux éléments intermédiaires (106) selon l'une quelconque des revendications 1 à 11
    et/ou
    comprend au moins un moyen de fixation (119) pour fixer l'élément intermédiaire (106) ou le dispositif de serrage (104) sur un support (108).
EP23195839.8A 2022-09-07 2023-09-06 Élément intermédiaire destiné à être disposé entre un dispositif de serrage et un sous-sol et tour de serrage comprenant un élément intermédiaire Active EP4335590B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102022122691.3A DE102022122691A1 (de) 2022-09-07 2022-09-07 Zwischenelement zum Anordnen zwischen einer Spannvorrichtung und einem Untergrund und ein Zwischenelement umfassender Spannturm

Publications (2)

Publication Number Publication Date
EP4335590A1 EP4335590A1 (fr) 2024-03-13
EP4335590B1 true EP4335590B1 (fr) 2025-12-17

Family

ID=87971909

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23195839.8A Active EP4335590B1 (fr) 2022-09-07 2023-09-06 Élément intermédiaire destiné à être disposé entre un dispositif de serrage et un sous-sol et tour de serrage comprenant un élément intermédiaire

Country Status (4)

Country Link
EP (1) EP4335590B1 (fr)
DE (1) DE102022122691A1 (fr)
ES (1) ES3058357T3 (fr)
PL (1) PL4335590T3 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2808667C2 (de) * 1977-03-10 1984-11-22 André Cergy Carossino Spannvorrichtung zum Festspannen von Werkstücken
DE9111510U1 (de) * 1991-09-16 1991-12-05 Barabas, Ewald, Dipl.-Ing., 1000 Berlin Stufenlos verstellbares Aufspannwerkzeug
DE4327471C1 (de) * 1993-08-16 1994-10-13 Systemspanntechnik Ing E Barab Selbstklemmendes Spannwerkzeug
DE4327861A1 (de) * 1993-08-19 1995-02-23 Bessey & Sohn Spanneinrichtung
US6957808B2 (en) * 2001-11-13 2005-10-25 Wmh Tool Group, Inc. Apparatus for securing a workpiece
DE10326702B4 (de) * 2003-06-13 2007-11-15 Karl-Heinz Lenzkes Aufbauelement zum Aufspannen eines Werkstücks auf einem Spanntisch
DE102008033996A1 (de) * 2008-07-21 2010-02-25 Dieter Mengemann Distanzelement einer Vorrichtung zum lösbaren Festlegen eines Teils an einer Trageinrichtung und zugehörige Vorrichtung

Also Published As

Publication number Publication date
PL4335590T3 (pl) 2026-04-20
ES3058357T3 (es) 2026-03-10
EP4335590A1 (fr) 2024-03-13
DE102022122691A1 (de) 2024-03-07

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