CN110605597B

CN110605597B - Combined positioning jig and use method thereof

Info

Publication number: CN110605597B
Application number: CN201810622836.3A
Authority: CN
Inventors: 季兆才; 李龙; 张猛
Original assignee: Jabil Circuit Singapore Pte Ltd
Current assignee: Jabil Circuit Singapore Pte Ltd
Priority date: 2018-06-15
Filing date: 2018-06-15
Publication date: 2021-09-03
Anticipated expiration: 2038-06-15
Also published as: CN110605597A

Abstract

The invention discloses a combined positioning jig and a using method thereof, wherein the using method comprises the following steps of providing a bearing module; assembling the bearing and leaning module on the support frame, selecting the supporting and leaning plate to be assembled on the support frame when the workpiece is provided with the through hole, and selecting the adsorption bearing and leaning plate to be assembled on the support frame when the workpiece is not provided with the through hole; placing a workpiece on the bearing module; assembling a pressing assembly on a support frame, selecting a plurality of longitudinal pressing modules of the pressing assembly to be assembled on the support frame when a workpiece with a through hole is placed on a supporting backup plate, enabling the longitudinal pressing modules and the supporting backup plate to respectively clamp and position the top surface and the bottom surface of the workpiece, selecting a plurality of transverse pressing modules of the pressing assembly to be assembled on the support frame when a workpiece without a through hole is placed on an adsorption backup plate, enabling the transverse pressing modules and the adsorption backup plate to jointly clamp and position the workpiece, and enabling the bottom surface of the workpiece to be adsorbed by the suction force generated by the adsorption backup plate.

Description

Combined positioning jig and use method thereof

Technical Field

The present invention relates to a clamping and positioning device, and more particularly, to a combined positioning device for a machining tool and a method for using the same.

Background

In the field of machining of Computer Numerical Control (CNC) machines, a clamping and positioning fixture is usually developed and designed individually according to the structure of a workpiece to be machined or the machining form thereof, so that the problems of long manufacturing time and high manufacturing cost of the clamping and positioning fixture are easily caused. In addition, after the development and design of the clamping and positioning jig are finished, the clamping and positioning jig can only be used for clamping the specific workpiece and cannot be used for clamping other workpieces with different structures or processing forms, so that the universality of the clamping and positioning jig is extremely low. Therefore, after the machining process of the machine tool on the specific workpiece is completed, the idle rate of the clamping and positioning jig is high and the repeated utilization rate is low.

Disclosure of Invention

An object of the present invention is to provide a method for using a combined positioning fixture, which can combine different clamping and positioning modes according to different workpiece structures or processing forms, so that the combined positioning fixture has high versatility, wide applicability, and reusability.

The purpose of the invention and the technical problem to be solved are realized by adopting the following technical scheme, and the combined positioning jig provided by the invention is suitable for clamping and positioning the workpiece.

The using method comprises the following steps:

providing a bearing module, wherein the bearing module comprises a supporting bearing plate and an adsorption bearing plate, the adsorption bearing plate is provided with a bearing top surface and can generate suction on the bearing top surface through a vacuum air exhaust device in operation, and the supporting bearing plate is provided with a bearing top surface;

assembling the bearing module on a support frame, selecting the support bearing plate to be assembled on the support frame when the workpiece has a top surface, a bottom surface and at least one through hole penetrating between the top surface and the bottom surface, and selecting the adsorption bearing plate to be assembled on the support frame when the workpiece has the bottom surface and the through hole is not formed;

placing the workpiece on the bearing and leaning module, wherein when the workpiece with the through hole is placed on the supporting and leaning plate, the bottom surface of the workpiece is supported by the bearing and leaning top surface of the supporting and leaning plate, and when the workpiece without the through hole is placed on the adsorption bearing and leaning plate, the bottom surface of the workpiece is supported by the bearing and leaning top surface of the adsorption bearing and leaning plate; and

assembling a pressing assembly on the support frame, selecting a plurality of longitudinal pressing modules of the pressing assembly to be assembled on the support frame when the workpiece with the through hole is placed on the supporting backup plate, so that the longitudinal pressing modules and the supporting backup plate respectively clamp and position the top surface and the bottom surface of the workpiece, selecting a plurality of transverse pressing modules of the pressing assembly to be assembled on the support frame when the workpiece without the through hole is placed on the adsorption backup plate, so that the transverse pressing modules and the adsorption backup plate jointly clamp and position the workpiece, and the bottom surface of the workpiece is adsorbed by the suction force generated by the adsorption backup plate.

In some embodiments, when the workpiece is formed with the through hole, the top bearing surface of the supporting bearing plate and the longitudinal pressing module respectively clamp and position the bottom surface and the top surface of the workpiece in the Z direction, when the workpiece is not formed with the through hole, the first positioning block of the positioning block and the first transverse pressing module of the transverse pressing module clamp and position the outer peripheral surface of the workpiece in the Y direction, and the second positioning block of the positioning block and the second transverse pressing module of the transverse pressing module clamp and position the outer peripheral surface of the workpiece in the X direction.

In some embodiments, the longitudinal pressing module is adjustable in position relative to the supporting frame along the X direction and the Y direction and is fixable to the supporting frame, and the first transverse pressing module and the second transverse pressing module are each adjustable in position relative to the supporting frame along the X direction and the Y direction and is fixable to the supporting frame.

In some embodiments, the first and second transverse pressing modules press the outer circumferential surface of the workpiece by a self-locking cylinder.

In some embodiments, the first and second transverse pressing modules press the outer circumferential surface of the workpiece by a flexible self-locking cylinder.

Another objective of the present invention is to provide a combined positioning fixture, which can combine different clamping and positioning manners according to different workpiece structures or processing manners, so that the combined positioning fixture has high versatility, wide applicability, and reusability.

The purpose of the invention and the technical problem to be solved are realized by adopting the following technical scheme, and the combined positioning jig provided by the invention is suitable for clamping and positioning a workpiece.

The combined positioning jig comprises a support frame, a bearing and leaning module and a pressing assembly, wherein the bearing and leaning module comprises a supporting and leaning plate which is detachably assembled on the support frame and an adsorption and leaning plate which is detachably assembled on the support frame, the adsorption and leaning plate is provided with a bearing and leaning top surface and can generate suction on the bearing and leaning top surface in operation, the supporting and leaning plate is provided with the bearing and leaning top surface but is not provided with the adsorption groove, the pressing assembly comprises a plurality of longitudinal pressing modules which are detachably assembled on the support frame and a plurality of transverse pressing modules which are detachably assembled on the support frame, when a workpiece is provided with a top surface, a bottom surface and at least one through hole which penetrates between the top surface and the bottom surface, the supporting and leaning plate and the longitudinal pressing module are assembled on the support frame, and the bearing and leaning top surface and the longitudinal pressing module of the supporting and leaning plate respectively clamp and position the bottom surface and the top surface of the workpiece, when the workpiece is provided with the bottom surface and the through hole is not formed, the adsorption bearing plate and the transverse pressing module are assembled on the support frame, the adsorption bearing plate supports the bottom surface of the workpiece through the bearing top surface and adsorbs the bottom surface through the generated suction force, and the adsorption bearing plate, the positioning stop block and the transverse pressing module clamp and position the workpiece together.

In some embodiments, when the workpiece is formed with the through hole, the top bearing surface of the bearing plate and the longitudinal pressing module respectively clamp and position the bottom surface and the top surface of the workpiece in the Z direction, and the longitudinal pressing module can be adjusted in position relative to the support frame in the X direction and the Y direction and can be fixed on the support frame.

In some embodiments, the support frame is formed with two first sliding grooves located on opposite sides of the bearing module, the first sliding grooves extend along the X direction, the longitudinal pressing module includes a sliding unit and a longitudinal pressing cylinder, the sliding unit includes a bearing block, a first sliding connector and a second sliding connector, the first sliding connector is disposed on the bearing block and slidably connected to the corresponding first sliding groove, the first sliding connector can fix the bearing block to the support frame, the bearing block is formed with a sliding connection groove extending along the Y direction, the second sliding connector is disposed on the longitudinal pressing cylinder and slidably connected to the sliding connection groove, and the second sliding connector can fix the longitudinal pressing cylinder to the bearing block.

In some embodiments, the transverse pressing module includes a first transverse pressing module and a second transverse pressing module, the adsorption bearing plate includes a first positioning block and a second positioning block, when the workpiece is not formed with the through hole, the first transverse pressing module and the first positioning block clamp and position an outer circumferential surface of the workpiece in a Y direction, the second transverse pressing module and the second positioning block clamp and position the outer circumferential surface of the workpiece in an X direction, and the first transverse pressing module and the second transverse pressing module are adjustable in position relative to the support frame along the X direction and the Y direction and can be fixed on the support frame.

In some embodiments, the supporting frame is formed with a first sliding groove extending along the X direction and a second sliding groove extending along the Y direction, the transverse pressing module includes a sliding unit and a transverse pressing cylinder, the sliding unit includes a first bearing block, a first sliding connector, a second bearing block and a second sliding connector, the first bearing block is formed with a sliding connection groove, the first sliding connector is disposed on the first bearing block and slidably connected to the first sliding groove or the second sliding groove, the second bearing block is disposed on the first bearing block, the transverse pressing cylinder is disposed on the second bearing block for pressing the outer circumferential surface of the workpiece, the second sliding connector is disposed on the second bearing block and slidably connected to the sliding connection groove and capable of fixing the second bearing block to the first bearing block, the first sliding connector of the first transverse pressing module is slidably connected to the first sliding groove and capable of slidably connecting to the first sliding groove and capable of fixing the second bearing block to the first bearing block, and the transverse pressing module is configured to slidably connected to the first sliding groove and capable of pressing the first sliding connection part The first bearing block is fixed on the support frame, the sliding connection groove of the first transverse pressing module extends along the Y direction, the first sliding connection piece of the second transverse pressing module is connected with the second sliding groove in a sliding mode and can fix the first bearing block on the support frame, and the sliding connection groove of the second transverse pressing module extends along the X direction.

The purpose of the invention and the technical problem to be solved are realized by adopting the following technical scheme, and the use method of the combined positioning jig provided by the invention is suitable for clamping and positioning the workpiece; wherein:

providing a support frame;

providing a supporting backup plate which is detachably assembled on the supporting frame and an adsorption backup plate which is detachably assembled on the supporting frame, wherein the adsorption backup plate can generate suction on the top surface of the adsorption backup plate through a vacuum air exhaust device in operation;

providing a plurality of longitudinal pressing modules which are detachably assembled on the supporting frame and a plurality of transverse pressing modules which are detachably assembled on the supporting frame;

when the workpiece is provided with a through hole along the longitudinal direction, assembling the supporting and leaning plate and the longitudinal pressing module on the supporting frame, so that the workpiece is leaned on the supporting and leaning plate, and the longitudinal pressing module applies the longitudinal clamping force of the workpiece; and

when the workpiece does not have a through hole along the longitudinal direction, the adsorption bearing plate and the transverse pressing module are assembled on the support frame, so that the workpiece is supported on the adsorption bearing plate and is adsorbed by the suction force generated by the top surface of the adsorption bearing plate, and the transverse pressing module applies the transverse clamping force of the workpiece.

providing a support frame;

assembling the support backup plate on the support frame, so that a first workpiece is supported on the support backup plate, and the area of the first workpiece supported on the support backup plate is provided with a through hole along the longitudinal direction; and

and assembling the adsorption bearing plate on the support frame, so that a second workpiece is supported on the adsorption bearing plate and is adsorbed by the suction force generated by the top surface of the adsorption bearing plate, and the area, which is supported on the adsorption bearing plate and is adsorbed by the suction force generated by the top surface of the adsorption bearing plate, of the second workpiece does not have any through hole formed along the longitudinal direction.

The invention has the beneficial effects that: through the design of the supporting frame, the bearing module and the pressing assembly, the combined type positioning jig can be combined into different clamping and positioning modes according to different workpiece structures or processing modes, so that the combined type positioning jig is high in universality, wide in applicability and reusable.

Drawings

FIG. 1 is a perspective view of a positioning fixture for clamping a workpiece according to a first embodiment of the present invention;

FIG. 2 is a perspective view of the support bracket of the first embodiment;

FIG. 3 is a perspective view of the bearing module of the first embodiment illustrating that the bearing module includes a support bearing plate and an adsorption bearing plate;

FIG. 4 is a perspective view from another perspective of FIG. 3;

FIG. 5 is a perspective view of the press modules of the first embodiment illustrating that the press modules include longitudinal and transverse press modules;

fig. 6 is an exploded perspective view of the longitudinal press module of the first embodiment;

fig. 7 is an exploded perspective view of the transverse compression module of the first embodiment;

fig. 8 is an exploded perspective view of the transverse compression module of the first embodiment;

FIG. 9 is a flow chart of a method of use of the first embodiment;

FIG. 10 is a perspective view of the workpiece to be clamped by the first embodiment;

FIG. 11 is a right side view of FIG. 1;

FIG. 12 is a front view of FIG. 1;

FIG. 13 is a perspective view of a second embodiment of the positioning jig for clamping and positioning a workpiece;

FIG. 14 is a top view of FIG. 13;

FIG. 15 is a perspective view of a workpiece to be clamped by the third embodiment of the combined positioning tool of the present invention;

FIG. 16 is a perspective view of the third embodiment clamping positioning the workpiece;

FIG. 17 is a perspective view of a positioning fixture for clamping a workpiece according to a fourth embodiment of the present invention;

FIG. 18 is a top view of FIG. 17; and

fig. 19 is a perspective view of a combined positioning tool according to a fifth embodiment of the present invention.

Detailed Description

The invention is described in detail below with reference to the following figures and examples:

before describing the present invention in detail, it should be noted that like elements are identified with like reference numerals throughout the following description.

Referring to fig. 1, fig. 1 shows a first embodiment of the combined positioning tool 200, which is applied to a machining tool, such as a Computer Numerical Control (CNC) machine, and is adapted to clamp and position a workpiece 11, so that the machining tool can process the workpiece 11. The combined positioning fixture 200 includes a supporting frame 2, a bearing module 3 and a pressing assembly 4.

Referring to fig. 2, the supporting frame 2 includes a first supporting plate 21, a plurality of supporting posts 22 disposed at the top end of the first supporting plate 21 and located in the middle of the first supporting plate 21, a second supporting plate 23 disposed at the top end of the supporting posts 22, and a plurality of positioning pins 24 disposed on the top surface of the second supporting plate 23. The first support plate 21 is rectangular and has a length extending direction extending along the X direction, and the first support plate 21 has two short sides 211 spaced along the X direction and two long sides 212 spaced along the Y direction. The first support plate 21 is formed with two pairs of first slide grooves 213 respectively located at opposite sides of the pillar 22 and two pairs of second slide grooves 214 respectively located at the other two opposite sides of the pillar 22. Each first sliding slot 213 extends in the X direction and has two first openings 215 formed in the two short sides 211. Each second sliding slot 214 extends in the Y direction, communicates with each first sliding slot 213, and has two second openings 216 formed on the two long sides 212. The first and

second chutes

213 and 214 have an inverted T-shaped longitudinal section. Each of the support posts 22 is fastened to the first support plate 21 by, for example, screwing. The second support plate 23 is secured to each of the posts 22 by, for example, screw locking. The second support plate 23 has a rectangular shape and a length extending direction thereof extends in the X direction. A mounting hole 231 is formed at the center of the second support plate 23, and the mounting hole 231 is used for mounting the vacuum nozzle 20 (shown in fig. 11).

Referring to fig. 2, 3 and 4, the support module 3 includes a support plate 31 and an absorption support plate 32. The support and rest plate 31 is rectangular and has a bottom surface 311 capable of supporting the second support plate 23 and a top surface 312 opposite to the bottom surface 311. The bottom surface 311 of the support plate 31 has a plurality of positioning holes 313, and each positioning hole 313 is used for the corresponding positioning pin 24 to be engaged. The support bearing plate 31 is detachably assembled and positioned on the second support plate 23 of the support frame 2 by each positioning pin 24 being caught in the corresponding positioning hole 313 and being detachable from the corresponding positioning hole 313.

The suction backup plate 32 has a rectangular plate body 320 and a plurality of positioning stoppers. The plate body 320 is rectangular and has a bottom 321 capable of supporting the second supporting plate 23 and a top 322 opposite to the bottom 321. A plurality of positioning holes 323 and grooves 324 are formed on the bottom 321 of the plate body 320. Each positioning hole 323 is used for the corresponding positioning pin 24 to penetrate. The positioning pins 24 penetrate into and are clamped in the corresponding positioning holes 323, and the corresponding positioning holes 323 can be detached, so that the adsorption bearing plate 32 can be detachably assembled and positioned on the second supporting plate 23 of the supporting frame 2. The groove 324 is used for communicating with the mounting hole 231. The top surface 322 of the plate 320 is formed with a grid-shaped suction groove 325, and the suction groove 325 is connected to the groove 324 through two suction holes 326, so that when a vacuum nozzle 20 (shown in fig. 11) connected to a vacuum suction device (such as a vacuum pump, not shown) sucks air, the groove 324, the suction holes 326 and the suction groove 325 can simultaneously generate suction force. The positioning block is disposed on the top surface 322 of the plate 320 and has two first positioning blocks 327 and a second positioning block 328. The two first positioning blocks 327 are adjacent to one of the long sides of the top surface 322 and are arranged at intervals along the X direction, and each first positioning block 327 is fixed on the board body 320 by, for example, a screw locking method. The second positioning block 328 is adjacent to one of the short sides of the top surface 322, and the second positioning block 328 is fastened to the plate 320 by, for example, screwing.

Referring to fig. 1, 5 and 6, the press assembly 4 includes a plurality of longitudinal press modules 41, a plurality of transverse press modules 43 and a plurality of transverse press modules 43'. Each longitudinal pressing module 41 includes a slide unit 411 and a longitudinal pressing cylinder 412. The sliding unit 411 includes a bearing block 413, two first sliding connectors 414, and two second sliding connectors 415. The bearing block 413 abuts against the top surface of the first support plate 21 and forms two first through holes 416 and two sliding connection slots 417. Each first through hole 416 extends in the longitudinal direction Z and penetrates the top and bottom surfaces of the carrier block 413. Two sliding grooves 417 are formed on the top surface of the bearing block 413 and located on opposite sides of each first through hole 416. The bearing block 413 is slidably connected to the corresponding pair of first sliding grooves 213 or the corresponding pair of second sliding grooves 214 through two first sliding members 414. Each first sliding member 414 includes a first sliding block 418 and a first bolt 419. The first sliding block 418 is disposed at the bottom end of the bearing block 413 and is formed with a first screw hole 420. The first bolt 419 is inserted into the corresponding first through hole 416, and the head of the first bolt 419 abuts against a shoulder surface (not shown) inside the first through hole 416, so that the portion of the first bolt 419 adjacent to the bottom end can keep protruding out of the bottom end of the bearing block 413 for a proper distance and be screwed into the first screw hole 420.

Referring to fig. 2, 6 and 12, the first sliding block 418 has an inverted T-shaped longitudinal section and the shape of the first sliding groove 213 or the second sliding groove 214 is the same. The first sliding block 418 can be inserted into the first sliding groove 213 through the corresponding first opening 215 and slide in the first sliding groove 213, or the first sliding block 418 can be inserted into the second sliding groove 214 through the corresponding second opening 216 and slide in the second sliding groove 214. The longitudinal pressing module 41 can slide on the first support plate 21 by slidably coupling the first slider 418 to the first slide groove 213 or the second slide groove 214.

To fix the bearing block 413 of the longitudinal pressing module 41 to the first supporting plate 21, a user may rotate the first bolt 419 by an auxiliary tool (not shown) such as a screwdriver through the top end of the bearing block 413. Since the first slider 418 has the same shape in the vertical section as the first sliding groove 213 or the second sliding groove 214, the first slider 418 can only slide in the extending direction of the first sliding groove 213 or the second sliding groove 214 and cannot rotate therein. In addition, since the head of the first bolt 419 abuts against the shoulder surface inside the first through hole 416, the first bolt 419 does not move up and down relative to the bearing block 413 in the process of being rotated by the auxiliary tool. Therefore, when the first bolt 419 rotates in one direction, the first sliding block 418 is driven to be pressed upwards along the longitudinal direction Z toward the bearing block 413 to contact the first supporting plate 21, and simultaneously, the head of the first bolt 419 is pressed downwards along the longitudinal direction Z to contact the shoulder surface in the first through hole 416, so that the bearing block 413 of the longitudinal pressing module 41 can be fixed on the first supporting plate 21.

The longitudinal pressing cylinder 412 is disposed at the top end of the bearing block 413 and has a cylinder 421 and a pressing member 422 penetrating the cylinder 421 and capable of moving up and down relative to the cylinder 421 along the longitudinal direction Z. The cylinder 421 is formed with two second through holes 423. The press 422 has a ram 424. Each second slide joint 415 includes a second slide block 425 and a second bolt 426. The second slider 425 is disposed at the bottom end of the cylinder 421 and has a second screw hole 427, and the second slider 425 has an inverted T-shaped longitudinal section and the same shape as the sliding groove 417. The second slider 425 can be inserted into the sliding groove 417 through the opening and can slide in the sliding groove 417. The second bolts 426 are inserted through the corresponding second through holes 423 and are screwed into the second screw holes 427. The head of the second bolt 426 abuts on a shoulder surface (not shown) inside the second through hole 423 so that a portion of the second bolt 426 adjacent to the bottom end can remain protruded out of the bottom end of the cylinder 421 by a proper distance and be screwed into the second screw hole 427. The longitudinal pressing cylinder 412 is slidably coupled to the sliding connection groove 417 by the aforementioned second slider 425 so as to be able to slide on the bearing block 413.

To fix the cylinder 421 of the longitudinal pressing module 41 to the bearing block 413, the user can rotate the second bolt 426 via the top end of the cylinder 421 by using an auxiliary tool. Since the second slider 425 has the same longitudinal sectional shape as the sliding contact groove 417, the second slider 425 can slide only in the extending direction of the sliding contact groove 417 and cannot rotate therein. Further, since the head of the second bolt 426 abuts against the shoulder surface inside the second through hole 423, the second bolt 426 does not move up and down with respect to the cylinder 421 in the process of being rotated by the auxiliary tool. Therefore, when the second bolt 426 rotates in one direction, the second sliding block 425 is driven to be pressed and contacted with the bearing block 413 in the upward direction of the cylinder body 421 along the longitudinal direction Z, and meanwhile, the head of the second bolt 426 is pressed and contacted with the shoulder surface in the second through hole 423 in the downward direction of the longitudinal direction Z, so that the cylinder body 421 of the longitudinal pressing cylinder 412 can be fixed on the bearing block 413.

Referring to fig. 2, 5 and 7, each transverse pressing module 43 includes a sliding unit 431 and a transverse pressing cylinder 432. The sliding unit 431 includes a first bearing block 433, two first sliding connectors 434, a second bearing block 435, and two second sliding connectors 436. The first supporting block 433 abuts against the top surface of the first supporting plate 21 and forms two first through holes 437 and two sliding grooves 438. Each first through hole 437 extends in the longitudinal direction Z and penetrates the top and bottom surfaces of the first carrier block 433. Two sliding grooves 438 are formed on the top surface of the first bearing block 433 and located on opposite sides of each first through hole 437. The first bearing block 433 is slidably connected to the corresponding pair of first sliding grooves 213 or the corresponding pair of second sliding grooves 214 through two first sliding members 434. Each first sliding member 434 includes a first sliding block 439 and a first bolt 440. The first sliding block 439 is disposed at the bottom end of the first bearing block 433 and has a first screw hole 441 formed therein. The first bolt 440 is inserted into the corresponding first through hole 437, and the head of the first bolt 440 abuts against a shoulder surface (not shown) inside the first through hole 437, so that the portion of the first bolt 440 adjacent to the bottom end can keep protruding out of the bottom end of the first bearing block 433 by a proper distance and be screwed into the first screw hole 441.

Referring to fig. 2 and 7, the first slider 439 has an inverted T-shaped longitudinal section and has the same shape as the first sliding groove 213 or the second sliding groove 214. The first sliding block 439 can be disposed in the first sliding groove 213 through the corresponding first opening 215 and slide in the first sliding groove 213, or the first sliding block 418 can be disposed in the second sliding groove 214 through the corresponding second opening 216 and slide in the second sliding groove 214. The transverse pressing module 43 can slide on the first support plate 21 by slidably coupling the first slider 439 to the first slide groove 213 or the second slide groove 214.

To fix the first bearing block 433 of the transverse pressing module 43 to the first supporting plate 21, a user can rotate the first bolt 440 via the top end of the first bearing block 433 by an auxiliary tool (not shown). Since the first slider 439 has the same shape in cross section as the first slide groove 213 or the second slide groove 214, the first slider 439 can only slide in the extending direction of the first slide groove 213 or the second slide groove 214 and cannot rotate therein. In addition, since the head of the first bolt 440 abuts against the shoulder surface inside the first through hole 437, the first bolt 440 does not move up and down relative to the first bearing block 433 while being rotated by the auxiliary tool. Therefore, when the first bolt 440 rotates in one direction, the first sliding block 439 is driven to move upward along the longitudinal direction Z to urge and contact the first supporting plate 21 toward the first supporting block 433, and meanwhile, the head of the first bolt 440 moves downward along the longitudinal direction Z to urge and contact the shoulder surface in the first through hole 437, thereby fixing the first supporting block 433 of the transverse pressing module 43 on the first supporting plate 21.

The second bearing block 435 is disposed on the top of the first bearing block 433 and is formed with two second through holes 442. Each second sliding member 436 includes a second sliding block 443 and a second bolt 444. The second slider 443 is disposed at the bottom end of the second carrier block 435 and has a second screw hole 445, and the second slider 443 has an inverted T-shaped longitudinal section and a shape identical to the shape of the sliding groove 438. The second slider 443 can be inserted into the sliding groove 438 through the opening and can slide in the sliding groove 438. The second bolt 444 is inserted through the corresponding second through hole 442 and screwed into the second screw hole 445. The head of second bolt 444 abuts against surface 449 of second bearing block 435 so that the portion of second bolt 444 adjacent the bottom end can remain protruding out of the bottom end of second bearing block 435 by a suitable distance and threaded into second threaded hole 445. The second slider 443 is slidably connected to the sliding groove 438, so that the second bearing block 435 can slide on the first bearing block 433. The transverse pressing cylinder 432 is a self-locking cylinder disposed at the top end of the second bearing block 435, and the transverse pressing cylinder 432 has a cylinder body 446 and a pressing member 447 capable of moving transversely relative to the cylinder body 446. The cylinder 446 is screwed to the top end of the second bearing block 435, for example, by screws. The pressing member 447 has a pressing head 448, and the pressing head 448 has a pressing face 450.

When the second bearing block 435 of the transverse pressing module 43 is to be fixed to the first bearing block 433. The user can rotate the second bolt 444 with an auxiliary tool via the top end of the second bearing block 435. Since the second slider 443 has the same longitudinal sectional shape as the sliding groove 438, the second slider 443 can slide only in the extending direction of the sliding groove 438 and cannot rotate therein. In addition, since the head of the second bolt 444 abuts against the surface 449 of the second bearing block 435, the second bolt 444 does not move up and down relative to the second bearing block 435 during rotation by the auxiliary tool. Therefore, when the second bolt 444 rotates in one direction, the second sliding block 443 is driven to be pressed and contacted with the first bearing block 433 along the longitudinal direction Z upward toward the second bearing block 435, and meanwhile, the head of the second bolt 444 is pressed and contacted with the surface 449 of the second bearing block 435 along the longitudinal direction Z downward, so that the second bearing block 435 can be fixed on the first bearing block 433.

Referring to fig. 5 and 8, the structure of each transverse press module 43 ' is substantially the same as that of each transverse press module 43 except that the transverse press cylinder 432 of each transverse press module 43 ' is a flexible self-locking cylinder disposed at the top end of the second carrier block 435 and a ram 448 of the transverse press module 43 '. The ram 448 has two spaced apart press arms 451, each press arm 451 having a press face 450. The pressing face 450 of the transverse pressing module 43 'has an area smaller than that of the pressing face 450 of the transverse pressing module 43, whereby the pressing face 450 of the transverse pressing module 43' can reduce the area in contact with the workpiece 11 when pressing the workpiece 11. Further, the ram 448 of the transverse press module 43' can allow the machine tool to machine the workpiece 11 in the space between the two press arms 451.

The following describes a method for using the combined positioning fixture 200:

referring to fig. 9, fig. 9 is a flowchart illustrating a method for using the combined positioning tool 200 according to the embodiment, the method includes the following steps: providing a bearing module S1, assembling the bearing module on a support frame S2, placing a workpiece on the bearing module S3, and assembling a pressing assembly on the support frame S4.

Referring to fig. 10, the combined positioning jig 200 of the present embodiment is used to combine different clamping and positioning modes according to the structure of the workpiece 11 to be processed or different processing types thereof. For the workpiece 11 shown in fig. 10, the workpiece 11 has a rectangular shape and has a top surface 111 and a bottom surface 112. The workpiece 11 is formed with a plurality of through holes 113 penetrating between the top surface 111 and the bottom surface 112 and spaced from each other. The top surface 111 of the workpiece 11 is divided into a surface 114 to be processed and four non-processed surfaces 115 covering the area where the through hole 113 is located. The four non-processing surface portions 115 are adjacent to the four corners of the workpiece 11, respectively.

Referring to fig. 3 and 9, in the step of providing the bearing module S1, the bearing module 3 includes a supporting bearing plate 31 and an absorbing bearing plate 32. The suction bearing plate 32 has a bearing top surface 322 and a suction groove 325 formed on the bearing top surface 322. The support rest plate 31 has a rest top surface 312 but does not have suction grooves.

Referring to fig. 9, 10 and 11, in the step of assembling the support module on the supporting frame S2, when the workpiece 11 is formed with a plurality of through holes 113 penetrating between the top surface 111 and the bottom surface 112 so that the bottom surface 112 has a small area for vacuum absorption, the support backing plate 31 of the support module 3 is selected to be assembled on the second supporting plate 23 of the supporting frame 2. The formation of the plurality of through holes 113 in the workpiece 11 not only results in a small area for vacuum suction, but also results in the communication between the suction groove 325 and the through holes 113, which results in continuous suction of the suction force generated by the suction groove 325 and failure of vacuum suction of the workpiece 11. When the suction force generated by the suction groove 325 is continuously sucked, chips generated during the machining of the workpiece 11 by the machine tool are sucked by the suction groove 325 to contaminate the vacuum suction apparatus. Therefore, the support rest plate 31 is selected to be directly supported on the bottom surface 112 of the workpiece 11 to avoid the above situation. During assembly, each positioning hole 313 (shown in fig. 4) of the support-and-rest plate 31 is aligned above the corresponding positioning pin 24 (shown in fig. 2), and then the support-and-rest plate 31 is moved downward. When the positioning pins 24 are engaged in the corresponding positioning holes 313 and the second supporting plate 23 abuts against the bottom surface 311 of the supporting and leaning plate 31, the assembly of the supporting and leaning plate 31 is completed.

It should be noted that, although the workpiece 11 of the embodiment is described as an example in which a plurality of through holes 113 are formed, in other embodiments, the workpiece 11 may only be formed with at least one through hole 113 occupying most of the area, so that the area of the bottom surface 112 for vacuum absorption is small.

Referring to fig. 1, 9 and 11, in the step of placing the workpiece on the bearing module S3, the workpiece 11 is placed on the bearing top surface 312 of the supporting bearing plate 31, such that the bottom surface 112 of the workpiece 11 is supported by the bearing top surface 312 of the supporting bearing plate 31.

Referring to fig. 1, 9 and 11, in the step of assembling the pressing assembly on the supporting frame S4, a plurality of longitudinal pressing modules 41 of the pressing assembly 4 are selected to be assembled on the first supporting plate 21 of the supporting frame 2. In the present embodiment, four longitudinal pressing modules 41 are selected as an example for explanation. During the assembly process, the two first sliding blocks 418 of each longitudinal pressing module 41 are inserted into the two first sliding grooves 213 through the two first openings 215 corresponding to the short sides 211. Subsequently, each longitudinal pressing module 41 is pushed to slide in the X direction away from the short side 211, so that the ram 424 of each longitudinal pressing module 41 can be aligned in the Y direction with the corresponding non-processing surface portion 115.

Referring to fig. 1, 6, 11 and 12, after the pressing head 424 is aligned with the corresponding non-processing surface portion 115 along the Y direction, the longitudinal pressing cylinder 412 is pushed to slide toward one end of the bearing block 413, so that one of the first through holes 416 of the bearing block 413 is not covered by the longitudinal pressing cylinder 412, and at this time, the first bolt 419 can be rotated by the auxiliary tool to make the first sliding block 418 tightly contact with the first supporting plate 21. Then, the longitudinal pressing cylinder 412 is pushed to slide towards the other end of the bearing block 413, so that the other first through hole 416 of the bearing block 413 is not shielded by the longitudinal pressing cylinder 412, and at this time, the other first bolt 419 can be rotated by an auxiliary tool to make the first slide block 418 tightly contact with the first support plate 21. Thereby, the carrier block 413 can be fixed to the first support plate 21.

Since each sliding contact groove 417 of the bearing block 413 of each longitudinal press module 41 extends in the Y direction, the longitudinal press cylinder 412 of each longitudinal press module 41 can slide in the Y direction through each second slider 425 in the corresponding sliding contact groove 417. Thereby, the ram 424 of each longitudinal pressing module 41 can be aligned above the corresponding non-processing surface portion 115 in the Z direction. After the pressing head 424 is aligned above the corresponding non-processing surface portion 115 in the Z direction, the second bolt 426 is rotated by the auxiliary tool to urge the second slider 425 into contact with the bearing block 413, whereby the longitudinal pressing cylinder 412 can be fixed to the bearing block 413.

After each longitudinal pressing cylinder 412 is fixed on the bearing block 413, the pressing head 424 of each longitudinal pressing cylinder 412 is driven to move downwards along the Z direction and press on the corresponding non-processing surface part 115, and at this time, the pressing head 424 of each longitudinal pressing cylinder 412 and the bearing top surface 312 of the support bearing plate 31 clamp and position the top surface 111 and the bottom surface 112 of the workpiece 11 in the Z direction respectively. Therefore, the combined positioning jig 200 can firmly clamp and position the workpiece 11, and the workpiece 11 does not shake when the machining tool performs the cutting process on the to-be-machined surface 114 of the workpiece 11.

Referring to fig. 13, fig. 13 shows a second embodiment of the combined positioning jig of the present invention, and the combined positioning jig 200 is different from the first embodiment in the structure and processing manner of the workpiece 12 to be clamped and positioned.

In the present embodiment, the workpiece 12 has a rectangular shape and has a base wall 121 and a surrounding wall 122 formed around the outer periphery of the base wall 121. The base wall 121 and the surrounding wall 122 together define a bottom surface 123. The base wall 121 has an upper surface 124. The surrounding wall 122 has an upper end surface 125, an inner peripheral surface 126 connected between the upper surface 124 and the upper end surface 125, and an outer peripheral surface 127. The upper surface 124, the upper end surface 125 and the inner peripheral surface 126 are surfaces to be processed. The outer peripheral surface 127 has two first surface portions 128 spaced apart in the Y direction and two second surface portions 129 spaced apart in the X direction. Since the workpiece 12 of this embodiment is not formed with the through hole 113 shown in fig. 10, the bottom surface 123 of the workpiece 12 has a sufficient area for the suction groove 325 (shown in fig. 3) to perform vacuum suction.

Referring to fig. 2, 3 and 4, in the step of assembling the bearing module on the supporting frame S2 shown in fig. 9, the absorption bearing plate 32 of the bearing module 3 is selected to be assembled on the second supporting plate 23 of the supporting frame 2. In the assembling process, the positioning holes 323 of the suction backup plate 32 are aligned above the corresponding positioning pins 24, and then the suction backup plate 32 is moved downward. When the positioning pins 24 are engaged in the corresponding positioning holes 323 and the second supporting plate 23 abuts against the bottom 321 of the suction support plate 32, the assembly of the suction support plate 32 is completed.

Referring to fig. 13 and 14, in the step S3 of placing the workpiece on the bearing module shown in fig. 9, the workpiece 12 is placed on the bearing top surface 322 of the adsorption bearing plate 32, such that the bottom surface 123 of the workpiece 12 is supported by the bearing top surface 322 of the adsorption bearing plate 32, and one of the first surface portions 128 of the outer circumferential surface 127 of the workpiece 12 abuts against the two first positioning stoppers 327 and one of the second surface portions 129 abuts against the second positioning stopper 328.

Referring to fig. 7, 9, 13 and 14, in the step of assembling the pressing assembly on the supporting frame S4, the plurality of transverse pressing modules 43 of the pressing assembly 4 are selected to be assembled on the first supporting plate 21 of the supporting frame 2. In the assembling process, two lateral press modules 43 are assembled to one side of the first support plate 21, so that each lateral press module 43 serves as a first lateral press module opposite to the first positioning stopper 327 of the suction backup plate 32. The two first sliding blocks 439 of each of the first transverse pressing modules are inserted into the two first sliding grooves 213 through the two first openings 215 corresponding to the short sides 211. Subsequently, each first transverse press module is pushed to slide in the X direction so that its ram 448 is aligned with the other first face portion 128 of the outer peripheral surface 127. After the pressing head 448 is aligned with the other first face 128 of the outer peripheral surface 127, the first bearing block 433 is fixed to the first support plate 21 by rotating each first bolt 440 with an auxiliary tool.

Since each slide groove 438 of the first carrier block 433 of each first transverse press module extends in the Y direction, the transverse press cylinder 432 of each first transverse press module can slide in the Y direction in the corresponding slide groove 438 by each second slider 443. Thereby allowing the ram 448 of each first transverse press module to be in close proximity to the first face 128. After the pressing head 448 is closely adjacent to the first face 128, the second bolt 444 is rotated by an auxiliary tool to fix the transverse pressing cylinder 432 and the second bearing block 435 on the first bearing block 433.

It should be noted that, in other embodiments, the number of the first transverse pressing modules may also be one.

On the other hand, one lateral pressing module 43 is assembled to the other side of the first support plate 21, so that the lateral pressing module 43 serves as a second lateral pressing module opposite to the second positioning stopper 328 of the suction backup plate 32. The two first sliding blocks 439 of the second transverse pressing module are inserted into the two second sliding grooves 214 through the two second openings 216 of the corresponding long sides 212. Subsequently, the second transverse press module is pushed to slide in the Y direction so that its ram 448 is aligned with the other second face portion 129 of the outer peripheral surface 127. After the pressing head 448 is aligned with the other second face portion 129 of the outer circumferential surface 127, the first bearing block 433 is fixed to the first support plate 21 by rotating each first bolt 440 with an auxiliary tool.

Since each sliding contact groove 438 of the first bearing block 433 of the second transverse press module extends in the X direction, the transverse press cylinder 432 of the second transverse press module can slide in the X direction by each second slider 443 in the corresponding sliding contact groove 438. Thereby allowing the ram 448 of the second transverse press module to be in close proximity to the second face 129. After the pressing head 448 is closely adjacent to the second face 129, the second bolt 444 is rotated by an auxiliary tool to fix the transverse pressing cylinder 432 and the second bearing block 435 on the first bearing block 433.

The ram 448 of each first cross press module is driven to urge the first face 128 in the Y direction toward the first locating stop 327 and the ram 448 of the second cross press module is driven to urge the second face 129 in the X direction toward the second locating stop 328. Thereby, the pressing face 450 of the ram 448 of the first transverse press module and the first positioning stopper 327 clamp and position the outer circumferential surface 127 of the workpiece 12 in the Y direction, and the pressing face 450 of the ram 448 of the second transverse press module clamps and positions the outer circumferential surface 127 of the workpiece 12 in the X direction. Next, the transverse press cylinders 432 of the first and second transverse press modules are locked such that the rams 448 of the first and second transverse press modules are locked in the press position shown in fig. 14. Thereafter, the vacuum suction nozzle 20 (shown in fig. 11) is driven to suck the suction force generated by the suction grooves 325 (shown in fig. 3) of the suction backup plate 32 to suck the bottom surface 123 of the workpiece 12. Therefore, the combined positioning jig 200 can firmly clamp and position the workpiece 12, and can prevent the workpiece 11 from shaking due to the large cutting force of the machining tool machine cutting the surface to be machined of the workpiece 12 along the X direction and the Y direction.

Referring to fig. 15 and 16, fig. 15 and 16 show a third embodiment of the combined positioning jig of the present invention, and the manner of clamping and positioning the workpiece 12 by the combined positioning jig 200 is slightly different from that of the second embodiment.

The upper end surface 125 of the workpiece 12 has two non-processing surface portions 130 connected to the two first surface portions 128, respectively. In the step S4 of assembling the pressing assembly to the supporting frame, two longitudinal pressing modules 41 of the pressing assembly 4 are further selected to be assembled to the first supporting plate 21 of the supporting frame 2, and each longitudinal pressing module 41 can be assembled to the first supporting plate 21 by the assembling method described in the first embodiment. Thereby, the ram 424 of each vertical pressing cylinder 412 and the bearing top surface 322 of the suction bearing plate 32 clamp and position the non-processing surface portion 130 and the bottom surface 123 of the workpiece 12 in the Z direction, respectively. Thereby, the stability of holding and positioning the workpiece 12 in the Z direction can be further improved compared to the second embodiment.

Referring to fig. 17 and 18, fig. 17 and 18 show a fourth embodiment of the combined positioning jig of the present invention, and the combined positioning jig 200 is slightly different from the second embodiment in terms of the workpiece 12' to be clamped and positioned.

The wall thickness of the surrounding wall 122 of the workpiece 12' of the present embodiment is thin and smaller than the wall thickness of the surrounding wall 122 of the workpiece 12 of the second embodiment. The upper surface 124 and the inner peripheral surface 126 of the workpiece 12' are surfaces to be machined.

Since the transverse pressing cylinder 432 of the transverse pressing module 43 shown in fig. 13 is a self-locking cylinder, the pushing force exerted by the pressing head 448 on the workpiece 12 is relatively large, and therefore, the transverse pressing module is suitable for clamping the workpiece 12 with a relatively thick wall surrounding the wall 122. In order to avoid the deformation of the surrounding wall 122 caused by excessive clamping force during the process of clamping the surrounding wall 122 of the workpiece 12 ', in the step of assembling the pressing assembly to the supporting frame S4 shown in fig. 9, the plurality of transverse pressing modules 43' of the pressing assembly 4 are selectively assembled to the first supporting plate 21 of the supporting frame 2 in the present embodiment. During the assembly process, two transverse press modules 43 'are assembled to one side of the first support plate 21, such that each transverse press module 43' acts as a first transverse press module opposite to the first positioning block 327 of the suction backup plate 32. In addition, one lateral press module 43 'is assembled to the other side of the first support plate 21 such that the lateral press module 43' serves as a second lateral press module opposite to the second positioning stopper 328 of the suction backup plate 32. The manner of assembling and fixing the transverse pressing module 43' to the first support plate 21 is the same as that of assembling and fixing the transverse pressing module 43 to the first support plate 21 in the second embodiment, and therefore, the detailed description thereof is omitted.

After each of the first and second transverse pressing modules is assembled and fixed to the first supporting plate 21, the pressing head 448 of each of the first transverse pressing modules is driven to push the first surface portion 128 along the Y direction so as to urge the workpiece 12 'toward the first positioning block 327, and the pressing head 448 of the second transverse pressing module is driven to push the second surface portion 129 along the X direction so as to urge the workpiece 12' toward the second positioning block 328. Thereby, the pressing face 450 of the ram 448 of the first transverse press module and the first positioning stopper 327 clamp the outer peripheral surface 127 of the work piece 12 'in the Y direction, and the pressing face 450 of the ram 448 of the second transverse press module clamps the outer peripheral surface 127 of the work piece 12' in the X direction. The transverse pressing cylinder 432 of the transverse pressing module 43' is a flexible self-locking cylinder that applies a spring force of, for example, 1 kilogram to the pressing head 448 to push it against the first face 128 or the second face 129. Since the spring force applied to the pressure head 448 is small, the pressing face 450 capable of lowering the pressure head 448 causes the surrounding wall 122 to deform during the pushing of the surrounding wall 122.

The transverse press cylinders 432 of the first and second transverse press modules are then locked to allow the rams 448 of the first and second transverse press modules to be locked in the press position shown in fig. 18. Thereafter, the vacuum suction nozzle 20 (shown in fig. 11) is driven to suck the suction force generated by the suction grooves 325 (shown in fig. 3) of the suction backup plate 32 to suck the bottom surface 123 of the workpiece 12'. Therefore, the combined positioning jig 200 can firmly clamp and position the workpiece 12'.

Referring to fig. 19, fig. 19 shows a fifth embodiment of the combined positioning tool of the present invention, and the manner of clamping and positioning the workpiece 12' by the combined positioning tool 200 is slightly different from the fourth embodiment.

In the step S4 of assembling the pressing assembly to the supporting frame, two longitudinal pressing modules 41 of the pressing assembly 4 are further selected to be assembled to the first supporting plate 21 of the supporting frame 2, and each longitudinal pressing module 41 can be assembled to the first supporting plate 21 by the assembling method described in the first embodiment. Thereby, the ram 424 of each longitudinal pressing cylinder 412 and the bearing top surface 322 of the suction bearing plate 32 clamp and position the upper end surface 125 and the bottom surface 123 of the workpiece 12' in the Z direction, respectively. Thereby, the stability of holding the positioning workpiece 12' in the Z direction can be further improved compared to the fourth embodiment.

In another embodiment, the number of the first slide grooves 213 of the first support plate 21 may be two and located on the opposite sides of the support column 22, and the number of the second slide grooves 214 may be two and located on the other two opposite sides of the support column 22. The number of the first sliding connection members 414 of each longitudinal pressing module 41 may be one, and the number of the first sliding connection members 434 of each transverse pressing

module

43, 43 'may also be one, so that the longitudinal pressing modules 41 and the transverse

pressing modules

43, 43' can slide along the first sliding grooves 213 or the second sliding grooves 214. In addition, the number of the sliding contact grooves 417 and the number of the second sliding contacts 415 of each longitudinal pressing module 41 may be one, and the longitudinal pressing cylinder 412 can slide along the sliding contact grooves 417 through the second sliding contacts 415. Furthermore, the number of the sliding contact grooves 438 and the number of the second sliding contacts 436 of each transverse pressing

module

43, 43' may be one, so that the transverse pressing cylinder 432 can slide along the sliding contact grooves 438 via the second sliding contacts 436.

In summary, through the design of the supporting frame 2, the bearing module 3 and the pressing assembly 4, the combined positioning fixture 200 can be combined into different clamping and positioning manners according to different workpiece structures or processing forms, so that the combined positioning fixture 200 has high versatility, wide applicability and reusability, and can indeed achieve the purpose required by the present invention.

Claims

1. A use method of a combined positioning jig is suitable for clamping and positioning a workpiece; the method is characterized in that:

the using method comprises the following steps:

2. The use method of the combined positioning jig according to claim 1, wherein: when the through hole is formed in the workpiece, the bearing top surface of the supporting bearing plate and the longitudinal pressing module respectively clamp and position the bottom surface and the top surface of the workpiece in the Z direction, when the through hole is not formed in the workpiece, the first positioning stop block of the adsorption bearing plate and the first transverse pressing module of the transverse pressing module clamp and position the peripheral surface of the workpiece in the Y direction, and the second positioning stop block of the adsorption bearing plate and the second transverse pressing module of the transverse pressing module clamp and position the peripheral surface of the workpiece in the X direction.

3. The use method of the combined positioning jig according to claim 2, wherein: the longitudinal pressing module can be adjusted in position relative to the support frame along the X direction and the Y direction and can be fixed on the support frame, and the first transverse pressing module and the second transverse pressing module can be adjusted in position relative to the support frame along the X direction and the Y direction and can be fixed on the support frame.

4. The use method of the combined positioning jig of claim 3, wherein: and the first transverse pressing module and the second transverse pressing module press the peripheral surface of the workpiece through a self-locking cylinder.

5. The use method of the combined positioning jig of claim 3, wherein: and the first transverse pressing module and the second transverse pressing module press the peripheral surface of the workpiece through a flexible self-locking cylinder.

6. The utility model provides a modular positioning jig, is suitable for carrying out the centre gripping location to the work piece, its characterized in that:

the combined positioning jig comprises a support frame, a bearing and leaning module and a pressing assembly, wherein the bearing and leaning module comprises a support bearing and leaning plate which is detachably assembled on the support frame and an adsorption bearing and leaning plate which is detachably assembled on the support frame, the adsorption bearing and leaning plate is provided with a bearing and leaning top surface and can generate suction on the bearing and leaning top surface in operation, the support bearing and leaning plate is provided with a bearing and leaning top surface, the pressing assembly comprises a plurality of longitudinal pressing modules which are detachably assembled on the support frame and a plurality of transverse pressing modules which are detachably assembled on the support frame, when the workpiece is provided with a top surface, a bottom surface and at least one through hole which penetrates between the top surface and the bottom surface, the support bearing and leaning plate and the longitudinal pressing module are assembled on the support frame, and the bearing and leaning top surface and the longitudinal pressing module of the support bearing and leaning plate respectively clamp and position the bottom surface and the top surface of the workpiece, when the workpiece is provided with the bottom surface and the through hole is not formed, the adsorption bearing plate and the transverse pressing module are assembled on the support frame, the adsorption bearing plate supports the bottom surface of the workpiece through the bearing top surface, adsorbs the bottom surface through the generated suction force, and clamps and positions the workpiece together with the transverse pressing module.

7. The combined positioning jig of claim 6, wherein: when the through hole is formed in the workpiece, the bearing top surface of the supporting bearing plate and the longitudinal pressing module respectively clamp and position the bottom surface and the top surface of the workpiece in the Z direction, and the longitudinal pressing module can be adjusted in position relative to the support frame along the X direction and the Y direction and can be fixed on the support frame.

8. The combined positioning jig of claim 7, wherein: the support frame is provided with two first sliding grooves which are located on the opposite sides of the bearing module, the first sliding grooves extend along the X direction, the longitudinal pressing module comprises a sliding unit and a longitudinal pressing air cylinder, the sliding unit comprises a bearing block, a first sliding connection piece and a second sliding connection piece, the first sliding connection piece is arranged on the bearing block and is slidably connected to the corresponding first sliding groove, the bearing block can be fixed on the support frame through the first sliding connection piece, a sliding connection groove extending along the Y direction is formed in the bearing block, the second sliding connection piece is arranged on the longitudinal pressing air cylinder and is slidably connected to the sliding connection groove, and the longitudinal pressing air cylinder can be fixed on the bearing block through the second sliding connection piece.

9. The combined positioning jig of claim 6, wherein: the transverse pressing module is provided with a first transverse pressing module and a second transverse pressing module, the adsorption bearing plate is provided with a first positioning stop block and a second positioning stop block, when the through hole is not formed in the workpiece, the first transverse pressing module and the first positioning stop block clamp and position the peripheral surface of the workpiece in the Y direction, the second transverse pressing module and the second positioning stop block clamp and position the peripheral surface of the workpiece in the X direction, and the first transverse pressing module and the second transverse pressing module can be adjusted in position relative to the support frame along the X direction and the Y direction respectively and can be fixed on the support frame.

10. The combined positioning jig of claim 9, wherein: the support frame is provided with a first sliding groove extending along the X direction and a second sliding groove extending along the Y direction, the transverse pressing module comprises a sliding unit and a transverse pressing air cylinder, the sliding unit comprises a first bearing block, a first sliding connecting piece, a second bearing block and a second sliding connecting piece, a sliding connecting groove is formed in the first bearing block, the first sliding connecting piece is arranged on the first bearing block and can be connected to the first sliding groove or the second sliding groove in a sliding mode, the second bearing block is arranged on the first bearing block, the transverse pressing air cylinder is arranged on the second bearing block and is used for pressing the outer peripheral face of the workpiece, the second sliding connecting piece is arranged on the second bearing block and can be connected to the sliding connecting groove in a sliding mode and can fix the second bearing block to the first bearing block, and the first sliding connecting piece of the first transverse pressing module can be connected to the first sliding groove in a sliding mode and can fix the first bearing block to the first sliding groove in a fixing mode The sliding connection groove of the first transverse pressing module extends along the Y direction, the first sliding connection piece of the second transverse pressing module is slidably connected to the second sliding groove and can fix the first bearing block on the supporting frame, and the sliding connection groove of the second transverse pressing module extends along the X direction.

11. The use method of the combined positioning jig is suitable for clamping and positioning a workpiece, and is characterized in that:

providing a support frame;

12. The use method of the combined positioning jig is suitable for clamping and positioning a workpiece, and is characterized in that:

providing a support frame;