An irregular shaped part fixture having scissor style platens

Abstract

This application relates to a fixture for irregularly shaped parts with a scissor-type clamping plate, comprising a mounting bracket, a positioning seat, and a clamping mechanism. The clamping mechanism includes a limiting rod, a clamping plate assembly that rotates with the limiting rod to clamp the workpiece body downwards, and a driving assembly. The clamping plate assembly includes a rotary mounting base, a first clamping plate, and a second clamping plate, the first and second clamping plates being coaxially and rotatably mounted on the rotary mounting base. The positioning seat has an arrangement channel for the first and second clamping plates to swing. The first clamping plate has a first driving groove for arranging the limiting rod; the second clamping plate has a second driving groove for arranging the limiting rod; the movable end of the first clamping plate has a first clamping structure for clamping a first crossbeam; the movable end of the second clamping plate has a second clamping structure for clamping a second crossbeam. This application achieves the effect of clamping the workpiece without interfering with the surface to be processed.

Description

Technical Field

[0001] This application relates to the field of clamping equipment, and more particularly to a clamping device for irregularly shaped parts with a scissor-type pressure plate. Background Technology

[0002] Fixtures are key tools for ensuring precise positioning and reliable fixation of workpieces, and their performance directly affects product processing quality and production efficiency. Irregularly shaped parts have unique structures and complex shapes, which place higher demands on the design and manufacture of fixtures.

[0003] Appendix Figure 1 A non-circular part is disclosed, comprising a workpiece body 1 with an upper surface smaller than its lower surface. The workpiece body 1 has a first cavity 11 at its bottom and a through-slot structure penetrating its inner and outer surfaces and communicating with the first cavity 11 on its sidewall. The through-slot structure has a first through-slot 12 and a second through-slot 13 arranged opposite to each other. The workpiece body 1 has a first crossbeam 14 at the outer end of the first through-slot 12, and a first elongated groove 141 arranged along the length of the first crossbeam 14 is formed at the top of the first crossbeam 14. The bottom surface of the first elongated groove 141 has an inclined first slope 142 at its center. The first crossbeam 14 has two symmetrically arranged first through holes 143 at both ends of the first slope 142, penetrating both the inner and outer surfaces of the first crossbeam 14. The workpiece body 1 has a second crossbeam 15 at the outer end of the second through groove 13, and a second long groove 151 arranged along the length of the second crossbeam 15 is opened on the top of the second crossbeam 15. The bottom surface of the second long groove 151 has an inclined second slope 152 in the middle. The second crossbeam 15 has two second through holes 153 symmetrically arranged at both ends of the second slope 152 and penetrating the inner and outer surfaces of the second crossbeam 15. The workpiece body 1 has three bottom support feet 16 at the bottom. The workpiece body 1 has an irregular arc-shaped end face 17 formed circumferentially on the outer end side wall. The operator needs to process the arc-shaped end face 17 of the above-mentioned irregular part.

[0004] In view of the aforementioned technologies, the inventors believe there is a need to provide a fixture that can clamp irregularly shaped parts without interfering with the surface to be processed. Utility Model Content

[0005] In order to clamp the workpiece body without interfering with the surface of the workpiece body to be processed, this application provides a fixture for irregularly shaped parts with a scissor-type pressure plate.

[0006] The irregular part clamp with scissor-type pressure plate provided in this application adopts the following technical solution: A fixture for irregularly shaped parts with scissor-type clamping plates includes a mounting bracket and a positioning seat arranged on top of the mounting bracket for arranging a workpiece body. The mounting bracket is provided with a clamping mechanism for fixing the workpiece body to the positioning seat. The clamping mechanism includes a limiting rod arranged horizontally on the mounting bracket along a direction perpendicular to the length of the mounting bracket, a clamping plate assembly that rotates with the limiting rod and clamps the workpiece body downwards, and a driving assembly for driving the clamping plate assembly to move up and down. The clamping plate assembly includes a rotary mounting base, a first clamping plate, and a second clamping plate, the first clamping plate and the second clamping plate being coaxially and rotatably mounted on the rotary mounting base. The positioning seat has an arrangement channel for swinging the first clamping plate and the second clamping plate. The first clamping plate has a first driving groove for arranging the limiting rod. The second clamping plate has a second driving groove for arranging the limiting rod. The movable end of the first clamping plate has a first clamping structure extending outwards from the workpiece body and clamping a first crossbeam of the workpiece body. The movable end of the second clamping plate has a second clamping structure extending outwards from the workpiece body and clamping a second crossbeam of the workpiece body.

[0007] By adopting the above technical solution, when using the irregular part fixture to clamp the workpiece body, the operator first places the workpiece body on the top of the positioning seat, and then starts the drive assembly to drive the pressure plate assembly to swing in the arrangement slot, so that the first clamping structure of the first pressure plate presses the first crossbeam of the workpiece body downward, and the second clamping structure of the second pressure plate presses the second crossbeam of the workpiece body downward, thereby realizing the positioning and clamping of the irregular part; by using the first drive slot and the second drive slot in conjunction with the limit rod to rotate, and by using the first clamping structure and the second clamping structure to clamp the first crossbeam and the second crossbeam of the workpiece body from the inside out respectively, the stability of the workpiece body during the processing is effectively guaranteed, and the workpiece body can be clamped without interfering with the surface of the workpiece body to be processed.

[0008] Optionally, the first drive groove includes a vertically arranged first sliding groove and a first rotating groove connected to the lower end of the first sliding groove and extending toward the direction close to the first crossbeam; the second drive groove includes a second sliding groove directly opposite the first sliding groove and vertically arranged, and a second rotating groove connected to the lower end of the second sliding groove and extending toward the direction close to the second crossbeam.

[0009] By adopting the above technical solution, the specific structures of the first driving groove and the second driving groove are disclosed. The first sliding groove and the first rotating groove limit the movement path of the first pressure plate, and the second sliding groove and the second rotating groove limit the movement path of the second pressure plate, so that the driving mechanism can effectively drive the first pressure plate and the second pressure plate to swing left and right or move up and down at the same time, thereby realizing the clamping of the workpiece body by the pressure plate assembly.

[0010] Optionally, the movable end of the first pressure plate has a first extension extending into a first through groove of the workpiece body; the first clamping structure includes a first arrangement hole penetrating the upper and lower end faces of the first extension and a first clamping block detachably installed in the first arrangement hole; the first clamping block includes a first column inserted into the first arrangement hole and a second column connected to the lower end of the first column and abutting against the bottom of the first extension; the bottom of the second column has a first abutting surface that conforms to the first inclined surface of the workpiece body.

[0011] By adopting the above technical solution, the specific structure of the first clamping assembly is disclosed. The first extension can extend from the first through groove of the workpiece body to the upper end of the first crossbeam. The first clamping block at the end of the first extension can clamp the workpiece body downward under the drive of the drive mechanism. By the first abutting surface adhering to the first inclined surface of the workpiece body, the clamping stability and fit of the first crossbeam of the workpiece body can be improved.

[0012] Optionally, the first contact surface is an inclined plane.

[0013] By adopting the above technical solution, the first contact surface is set as an inclined plane, which can better fit the first inclined surface of the workpiece body, thereby further enhancing the clamping effect on the first crossbeam of the workpiece body.

[0014] Optionally, the first clamping block has a first positioning plane arranged along the length direction of the first clamping block on the side where the distance between the first abutting surface and the lower end surface of the first column is the smallest; the first arrangement hole has a planar structure for the first positioning plane to be fitted and arranged.

[0015] By adopting the above technical solution and setting the first positioning plane to cooperate with the planar structure, it is possible to ensure the correct positioning and stable installation of the first clamping block during installation, and reduce the risk of rotation or displacement of the first clamping block during use, thereby improving the clamping stability and accuracy of the first crossbeam of the workpiece body.

[0016] Optionally, the movable end of the second pressure plate has a second extension extending into the second through groove of the workpiece body; the second clamping structure includes a second arrangement hole penetrating the upper and lower end faces of the second extension and a second clamping block detachably installed in the second arrangement hole; the second clamping block includes a third column inserted into the second arrangement hole and a fourth column connected to the lower end of the third column and abutting against the bottom of the second extension; the bottom of the fourth column has a second abutting surface that conforms to the first inclined surface of the workpiece body.

[0017] By adopting the above technical solution, the specific structure of the second clamping structure is disclosed. The second extension can extend from the second through groove of the workpiece body to the upper end of the second crossbeam. The first clamping block at the end of the second extension can clamp the workpiece body downward under the drive of the drive mechanism. By the second abutment surface adhering to the second inclined surface of the workpiece body, the clamping stability and fit of the second crossbeam of the workpiece body can be improved.

[0018] Optionally, the mounting base has a limiting protrusion for engaging with the bottom end of the workpiece body; the mounting base is provided with a first limiting post that engages with a first through hole of the workpiece body and a second limiting post that engages with a second through hole of the workpiece body on the side near the first pressure plate.

[0019] By adopting the above technical solution, the limiting protrusion engages with the bottom end of the workpiece body, which can limit the position of the workpiece body on the mounting base and help reduce the risk of it swaying left and right. By engaging the first limiting post with the first through hole of the workpiece body and the second limiting post with the second through hole of the workpiece body, the position of the workpiece body on the mounting base is further limited, which helps to enhance the positioning accuracy of the positioning base on the workpiece body, thereby further improving the fixing effect of the fixture on the workpiece body.

[0020] Optionally, the drive assembly includes a drive cylinder arranged on the mounting bracket and driving the rotary mounting base to move up and down, and the lower end of the rotary mounting base has a mounting column that is connected to the output end of the drive cylinder.

[0021] By adopting the above technical solution, the specific structure of the drive assembly is disclosed. The drive cylinder drives the rotating mounting base to move up and down, thereby realizing the drive of the pressure plate assembly and the clamping or loosening operation of the pressure plate assembly on the workpiece body. Furthermore, the cooperation and connection between the mounting column and the output end of the drive cylinder ensures the stability and transmission efficiency of the drive process.

[0022] Optionally, the number of positioning seats is not less than three and they are evenly spaced along the length of the mounting bracket, and the mounting bracket has multiple clamping mechanisms that cooperate with each of the positioning seats.

[0023] By adopting the above technical solution, at least three positioning seats and corresponding clamping mechanisms are set on the mounting bracket, which enables the simultaneous fixing of multiple workpiece bodies or multiple positions of workpiece bodies, thus helping to improve the working efficiency and versatility of the fixture.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. A shaped part clamping fixture with scissor-type pressure plates, comprising a mounting bracket, a positioning seat, and a clamping mechanism; when using the shaped part clamping fixture to clamp the workpiece body, the operator first places the workpiece body on top of the positioning seat, and then activates the drive assembly to drive the pressure plate assembly to swing within the arrangement slot, so that the first clamping structure of the first pressure plate presses the first crossbeam of the workpiece body downward, and the second clamping structure of the second pressure plate presses the second crossbeam of the workpiece body downward, thereby realizing the positioning and clamping of the shaped part; by utilizing the first and second drive slots in conjunction with the limiting rod to rotate, and by using the first and second clamping structures to clamp the first and second crossbeams of the workpiece body from the inside out respectively, the stability of the workpiece body during the processing is effectively guaranteed, and the workpiece body can be clamped without interfering with the surface of the workpiece body to be processed. 2. The first sliding groove and the first rotating groove limit the movement path of the first pressure plate, and the second sliding groove and the second rotating groove limit the movement path of the second pressure plate, so that the driving mechanism can effectively drive the first pressure plate and the second pressure plate to swing left and right or move up and down at the same time, thereby realizing the clamping of the workpiece body by the pressure plate assembly; 3. By setting the first contact surface as an inclined plane and setting the first positioning plane to cooperate with the planar structure, the correct positioning and stable installation of the first clamping block can be ensured during installation, which helps to reduce the risk of rotation or displacement of the first clamping block during use, thereby improving the clamping stability and accuracy of the first crossbeam of the workpiece body. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the irregularly shaped component in the embodiments of this application.

[0026] Figure 2 This is a bottom schematic diagram of the irregularly shaped component in an embodiment of this application.

[0027] Figure 3 This is a schematic diagram of the fit between the fixture and the irregular part in the embodiments of this application.

[0028] Figure 4 This is a cross-sectional view of the clamp along its length in the embodiments of this application.

[0029] Figure 5 This is a schematic diagram of the positioning seat in an embodiment of this application.

[0030] Figure 6 yes Figure 4 Enlarged view of the first clamping block at point A.

[0031] Figure 7 yes Figure 4 Enlarged view of the first drive slot at point B.

[0032] Figure 8This is a schematic diagram of the cooperation between the first clamping block and the first column in an embodiment of this application.

[0033] Figure 9 This is an enlarged cross-sectional view of a portion of the second clamping block in an embodiment of this application.

[0034] Figure 10 This is a schematic diagram of the structure of the second drive slot in the embodiment of this application.

[0035] Figure 11 This is a schematic diagram of the cooperation between the second clamping block and the second column in an embodiment of this application.

[0036] Explanation of reference numerals in the attached drawings: 1. Workpiece body; 11. First cavity; 12. First through groove; 13. Second through groove; 14. First crossbeam; 141. First long groove; 142. First inclined surface; 143. First through hole; 15. Second crossbeam; 151. Second long groove; 152. Second inclined surface; 153. Second through hole; 16. Bottom support; 17. Arc-shaped end face; 2. Mounting bracket; 21. Mounting base plate; 22. Mounting top plate; 23. Mounting side plate; 3. Positioning seat; 31. Limiting protrusion; 32. Arrangement channel; 33. Abutting protrusion; 34. Positioning groove; 35. First limiting post; 36. Second limiting post; 4. Limiting rod; 5. Pressure plate assembly; 51. Rotary mounting seat; 511. Rotary... 512. Rotating shaft; 52. Mounting column; 52. First pressure plate; 521. First extension; 5211. First arrangement hole; 522. First drive groove; 5221. First sliding groove; 5222. First rotation groove; 53. Second pressure plate; 531. Second extension; 5311. Second arrangement hole; 532. Second drive groove; 5321. Second sliding groove; 5322. Second rotation groove; 6. Drive assembly; 61. Drive cylinder; 7. First clamping block; 71. First column; 72. Second column; 721. First abutment surface; 73. First positioning plane; 8. Second clamping block; 81. Third column; 82. Fourth column; 821. Second abutment surface; 83. Second positioning plane. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1-11 This application will be described in further detail.

[0038] This application discloses a fixture for irregularly shaped parts with a scissor-type pressure plate. The structures of irregularly shaped parts involved in this application can all be referred to... Figure 1-2 This will not be cited separately in the following text.

[0039] Reference Figure 3The irregular part clamping fixture with scissor-type clamping plates includes a mounting bracket 2 and a positioning seat 3 arranged on top of the mounting bracket 2 for arranging the workpiece body 1. The mounting bracket 2 includes a mounting base plate 21, a mounting top plate 22, and a mounting side plate 23 vertically connected between the mounting base plate 21 and the mounting top plate 22. The mounting bracket 2 is provided with a clamping mechanism for fixing the workpiece body 1 to the positioning seat 3. In this embodiment, there are three positioning seats 3, and the three positioning seats 3 are evenly spaced along the length direction of the mounting bracket 2. The mounting bracket 2 is provided with three clamping mechanisms that cooperate with each of the three positioning seats 3.

[0040] Reference Figure 3 and Figure 4 The clamping mechanism includes a limiting rod 4 horizontally arranged on the mounting top plate 22 along its length perpendicular to the mounting top plate 22, a pressure plate assembly 5 rotatably arranged on the limiting rod 4 for clamping the workpiece body 1 downwards, and a driving assembly 6 for driving the pressure plate assembly 5 to move up and down. The pressure plate assembly 5 includes a rotary mounting base 51, a first pressure plate 52, and a second pressure plate 53. The rotary mounting base 51 has a rotating shaft 511 for mounting the first pressure plate 52 and the second pressure plate 53, and the first pressure plate 52 and the second pressure plate 53 are coaxially and rotatably mounted on the rotating shaft 511.

[0041] Reference Figure 5 The positioning seat 3 has a limiting protrusion 31 for limiting the opening of the first cavity 11 at the bottom of the workpiece body 1. The positioning seat 3 has an arrangement channel 32 in the middle of the limiting protrusion 31 for the first pressure plate 52 and the second pressure plate 53 to swing. The positioning seat 3 has abutting protrusions 33 on the outer edge of the limiting protrusion 31 for the crossbeam structure of the workpiece body 1 to abut against. There are four abutting protrusions 33, symmetrically arranged on the outer edge of the limiting protrusion 31. A positioning groove 34 is formed between adjacent abutting protrusions 33 for the bottom support leg 16 to be arranged. The positioning seat 3 has a first limiting post 35 for the arrangement of the first through hole 143 of the workpiece body 1 and a second limiting post 36 for the arrangement of the second through hole 153 of the workpiece body 1 in the positioning groove 34 near the first pressure plate 52.

[0042] Reference Figure 6 and Figure 7 The movable end of the first pressure plate 52 has a first clamping structure for clamping the first crossbeam 14 of the workpiece body 1. The movable end of the first pressure plate 52 has a first extension 521 extending into the first through groove 12 of the workpiece body 1. The first pressure plate 52 has a first drive groove 522 for accommodating the limiting rod 4. The first drive groove 522 includes a vertically arranged first sliding groove 5221 and a first rotating groove 5222 connected to the lower end of the first sliding groove 5221 and extending toward the side near the first extension 521.

[0043] Combination Figure 8The first clamping structure includes a first arrangement hole 5211 penetrating the upper and lower end faces of the first extension 521 and a first clamping block 7 detachably mounted in the first arrangement hole 5211. The first clamping block 7 includes a first post 71 inserted into the first arrangement hole 5211 and a second post 72 connected to the lower end of the first post 71 and abutting against the bottom of the first extension 521. The bottom of the second post 72 has a first abutting surface 721 arranged to conform to a first inclined surface 142 of the workpiece body 1. The first abutting surface 721 is an inclined plane with an inclination angle consistent with the first inclined surface 142 of the workpiece body 1. The first clamping block 7 has a first positioning plane 73 arranged along the length direction of the first clamping block 7 on the side where the distance between the first abutting surface 721 and the lower end face of the first post 71 is smallest. The first arrangement hole 5211 has a planar structure for the first positioning plane 73 to be abutted.

[0044] Reference Figure 9 and Figure 10 The movable end of the second pressure plate 53 has a second clamping structure for clamping the second crossbeam 15 of the workpiece body 1. The movable end of the second pressure plate 53 has a second extension 531 extending into the second through groove 13 of the workpiece body 1. The second pressure plate 53 has a second drive groove 532 for accommodating the limiting rod 4. The second drive groove 532 includes a second sliding groove 5321 that is vertically arranged opposite to the first sliding groove 5221 and a second rotating groove 5322 that is connected to the lower end of the second sliding groove 5321 and extends toward the side near the second extension 531.

[0045] Reference Figure 10 and Figure 11 The second clamping structure includes a second arrangement hole 5311 penetrating the upper and lower end faces of the second extension 531 and a second clamping block 8 detachably mounted in the second arrangement hole 5311. The second clamping block 8 includes a third post 81 inserted into the second arrangement hole 5311 and a fourth post 82 connected to the lower end of the third post 81 and abutting against the bottom of the second extension 531. The bottom of the fourth post 82 has a second abutting surface 821 arranged to conform to the second inclined surface 152 of the workpiece body 1. The second abutting surface 821 is an inclined plane with an inclination angle consistent with the second inclined surface 152 of the workpiece body 1. The second clamping block 8 has a second positioning plane 83 arranged along the length direction of the second clamping block 8 on the side where the distance between the second abutting surface 821 and the lower end face of the second post 72 is smallest. The second arrangement hole 5311 has a planar structure for the second positioning plane 83 to conform to the arrangement.

[0046] The drive assembly 6 includes a drive cylinder 61 disposed on the top of the mounting base 21 and driving the rotary mounting base 51 to move up and down. The lower end of the rotary mounting base 51 has a mounting column 512 that mates with the output end of the drive cylinder 61. In this embodiment, there are three drive cylinders 61, which are arranged directly opposite to the three clamping assemblies.

[0047] The implementation principle of the irregular part clamp with scissor-type pressure plate in this application embodiment is as follows: When using the irregular part clamp to clamp the workpiece body 1, the operator first places the workpiece body 1 on the top of the positioning seat 3, and then starts the drive assembly 6 to drive the pressure plate assembly 5 to swing in the arrangement slot, so that the first clamping structure of the first pressure plate 52 presses the first crossbeam 14 of the workpiece body 1 downward, and the second clamping structure of the second pressure plate 53 presses the second crossbeam 15 of the workpiece body 1 downward, thereby realizing the positioning and clamping of the irregular part; the first drive groove 522 and the second drive groove 532 cooperate with the limit rod 4 to rotate, and the first clamping structure and the second clamping structure clamp the first crossbeam 14 and the second crossbeam 15 of the workpiece body 1 from the inside to the outside, respectively, effectively ensuring the stability of the workpiece body 1 during the processing, and realizing the clamping of the workpiece body 1 without interfering with the surface of the workpiece body 1 to be processed.

[0048] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A fixture for irregularly shaped parts with a scissor-type pressure plate, characterized in that, The system includes a mounting bracket (2), a positioning seat (3) arranged on top of the mounting bracket (2) for arranging the workpiece body (1); the mounting bracket (2) is provided with a clamping mechanism for fixing the workpiece body (1) to the positioning seat (3); the clamping mechanism includes a limiting rod (4) arranged horizontally on the mounting bracket (2) along the length direction perpendicular to the mounting bracket (2), a pressure plate assembly (5) that rotates with the limiting rod (4) and is used to clamp the workpiece body (1) downwards, and a driving assembly (6) that drives the pressure plate assembly (5) to move up and down; the pressure plate assembly (5) includes a rotating mounting seat (51), a first pressure plate (52) and a second pressure plate (53), the first pressure plate (52) and the second pressure plate (53) being the same The shaft is rotatably mounted on the rotary mounting base (51); the positioning base (3) has an arrangement channel (32) for the first pressure plate (52) and the second pressure plate (53) to swing and arrange; the first pressure plate (52) has a first drive groove (522) for the arrangement of the limiting rod (4); the second pressure plate (53) has a second drive groove (532) for the arrangement of the limiting rod (4); the movable end of the first pressure plate (52) has a first clamping structure extending to the outer end of the workpiece body (1) and used to clamp the first crossbeam (14) of the workpiece body (1); the movable end of the second pressure plate (53) has a second clamping structure extending to the outer end of the workpiece body (1) and used to clamp the second crossbeam (15) of the workpiece body (1).

2. The irregular part clamping fixture with a scissor-type pressure plate according to claim 1, characterized in that, The first drive groove (522) includes a vertically arranged first sliding groove (5221) and a first rotating groove (5222) connected to the lower end of the first sliding groove (5221) and extending toward the first crossbeam (14); the second drive groove (532) includes a second sliding groove (5321) directly opposite the first sliding groove (5221) and vertically arranged, and a second rotating groove (5322) connected to the lower end of the second sliding groove (5321) and extending toward the second crossbeam (15).

3. A jig for irregularly shaped parts with a scissor-type pressure plate according to claim 1, characterized in that, The movable end of the first pressure plate (52) has a first extension (521) extending into the first through groove (12) of the workpiece body (1); the first clamping structure includes a first arrangement hole (5211) penetrating the upper and lower end faces of the first extension (521) and a first clamping block (7) detachably installed in the first arrangement hole (5211); the first clamping block (7) includes a first column (71) inserted into the first arrangement hole (5211) and a second column (72) connected to the lower end of the first column (71) and abutting against the bottom of the first extension (521); the bottom of the second column (72) has a first abutting surface (721) arranged to conform to the first inclined surface (142) of the workpiece body (1).

4. A jig for irregularly shaped parts with a scissor-type pressure plate according to claim 3, characterized in that, The first contact surface (721) is an inclined plane.

5. A jig for irregularly shaped parts with a scissor-type pressure plate according to claim 4, characterized in that, The first clamping block (7) has a first positioning plane (73) arranged along the length direction of the first clamping block (7) on the side where the distance between the first abutting surface (721) and the lower end surface of the first column (71) is the smallest; the first arrangement hole (5211) has a planar structure for the first positioning plane (73) to be fitted and arranged.

6. A jig for irregularly shaped parts with a scissor-type pressure plate according to claim 1, characterized in that, The movable end of the second pressure plate (53) has a second extension (531) extending into the second through groove (13) of the workpiece body (1); the second clamping structure includes a second arrangement hole (5311) penetrating the upper and lower end faces of the second extension (531) and a second clamping block (8) detachably installed in the second arrangement hole (5311); the second clamping block (8) includes a third column (81) inserted into the second arrangement hole (5311) and a fourth column (82) connected to the lower end of the third column (81) and abutting against the bottom of the second extension (531); the bottom of the fourth column (82) has a second abutting surface (821) arranged to conform to the first inclined surface (142) of the workpiece body (1).

7. A jig for irregularly shaped parts with a scissor-type pressure plate according to claim 1, characterized in that, The mounting base has a limiting protrusion (31) for engaging with the bottom end of the workpiece body (1); the mounting base is provided with a first limiting post (35) that engages with the first through hole (143) of the workpiece body (1) and a second limiting post (36) that engages with the second through hole (153) of the workpiece body (1) on the side near the first pressure plate (52).

8. A jig for irregularly shaped parts with a scissor-type pressure plate according to claim 1, characterized in that, The drive assembly (6) includes a drive cylinder (61) arranged on the mounting bracket (2) and driving the rotary mounting base (51) to move up and down. The lower end of the rotary mounting base (51) has a mounting column (512) that is connected to the output end of the drive cylinder (61).

9. A jig for irregularly shaped parts with a scissor-type pressure plate according to claim 1, characterized in that, The number of positioning seats (3) is not less than three and they are evenly spaced along the length of the mounting bracket (2). The mounting bracket (2) has multiple clamping mechanisms that cooperate with each of the positioning seats (3).

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