A jig for irregularly shaped parts with a tunnel-type pressure plate

Abstract

This application relates to a jig for irregularly shaped parts with a tunnel-type clamping plate, comprising a mounting base, a mounting bracket, and a first clamping assembly. The mounting base and mounting bracket have limiting structures for arranging the irregularly shaped workpiece. The first clamping assembly includes an abutment block arranged in an arc-shaped groove of the irregularly shaped workpiece, a rotating pressure rod for pressing the abutment block downward, a rotating abutment seat arranged on the mounting base for rotating the rotating pressure rod, and a first driving mechanism for driving the rotating pressure rod to swing up and down. One end of the rotating pressure rod is arranged in a second conduit of the irregularly shaped workpiece and has a first abutment portion that abuts against the abutment block. The rotating abutment seat has a rotating shaft arranged perpendicular to the length direction of the rotating pressure rod for abutting the upper end face of the rotating pressure rod. This application has the effect of clamping the irregularly shaped workpiece without the clamping portion interfering with the end face to be processed.

Description

Technical Field

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

[0002] When machining specific surfaces of a workpiece, it is usually necessary to use specific workpiece alignment for fixation in order to improve machining efficiency and accuracy.

[0003] Appendix Figure 1-4 A non-circular workpiece is disclosed, comprising a housing body 1, with an L-shaped pipeline formed inside the housing body 1. The L-shaped pipeline includes a first pipeline 11 and a second pipeline 12 arranged opposite to each other. The housing body 1 has a mounting portion 13 at one end of the first pipeline 11, and the mounting portion 13 has a first end face 131 at the outer end opening of the first pipeline 11. The mounting portion 13 has a plurality of first through holes 132 circumferentially arranged on the first end face 131. The housing body 1 has a first sleeve 14 coaxially arranged with the first pipeline 11 at the bottom, and the first sleeve 14 has a second end face 141 at its top. The housing body 1 has an arc-shaped groove 15 on the side of the first sleeve 14 near the second pipeline 12. The housing body 1 has a third pipeline 16 arranged perpendicular to and communicating with the first pipeline 11 on the side of the mounting portion 13, and the housing body 1 has a third end face 161 at the outer end opening of the third pipeline 16. The mounting part 13 has a second through hole 133 on the side of the first end face 131 away from the third pipe 16. The outer wall of the outer casing 1 has a fourth end face 17 on the side of the second pipe 12 away from the first pipe 11. The operator needs to process the first end face 131, the second end face 141, and the third end face 161.

[0004] In view of the aforementioned related technologies, the inventors believe that there is a need to provide a clamping device for clamping and fixing the aforementioned irregularly shaped workpieces. Utility Model Content

[0005] This application provides a jig for irregularly shaped parts with a tunnel-type pressure plate. The jig for irregularly shaped parts with a tunnel-type pressure plate can clamp irregularly shaped workpieces and the clamping part does not interfere with the end face to be processed.

[0006] The irregular part clamp with tunnel-type pressure plate provided in this application adopts the following technical solution:

[0007] A jig for irregularly shaped parts with a tunnel-type pressure plate includes a mounting base, a mounting bracket arranged on the mounting base for placing the irregularly shaped workpiece, and a first clamping assembly for pressing the irregularly shaped workpiece downward against the mounting bracket; the mounting base and the mounting bracket have limiting structures for arranging the irregularly shaped workpiece; the first clamping assembly includes an abutment block arranged in an arc-shaped groove of the irregularly shaped workpiece, a rotating pressure rod for pressing the abutment block downward, a rotating abutment seat arranged on the mounting base for rotating the rotating pressure rod, and a first driving mechanism for driving the rotating pressure rod to swing up and down; one end of the rotating pressure rod is arranged in a second pipe of the irregularly shaped workpiece and has a first abutment portion that abuts against the abutment block; the rotating abutment seat has a rotating shaft arranged perpendicular to the length direction of the rotating pressure rod for abutting the upper end face of the rotating pressure rod.

[0008] By adopting the above technical solution, when clamping and fixing irregularly shaped workpieces, the operator first places the irregularly shaped workpiece at the mounting bracket. The limiting structure can effectively position the irregularly shaped workpiece. Then, the abutment block is placed in the arc-shaped groove of the irregularly shaped workpiece. Next, the rotating pressure rod is inserted into the appropriate position, so that the first abutment part is placed in the second pipeline and abuts against the top of the abutment block. The middle section of the rotating pressure rod abuts against the rotating shaft, and the tail end of the rotating pressure rod abuts against the first driving mechanism. Activating the first driving mechanism causes the tail end of the rotating pressure rod to swing upward, and the first abutment part swings downward and presses the abutment block into the arc-shaped groove of the irregularly shaped workpiece. This achieves clamping of the irregularly shaped workpiece without interference with the first, second, and third end faces, which is helpful for subsequent processing of the first, second, and third end faces.

[0009] Optionally, the top of the abutment block is provided with a vertically arranged limiting rod; the first abutment part is provided with an arrangement groove along the length direction for arranging the limiting rod.

[0010] By adopting the above technical solution, the limiting rod and the groove are used to limit the abutment block, so that the abutment block remains stable during the pressing process, reducing shaking and displacement, thereby pressing the irregular workpiece downwards onto the mounting bracket more accurately.

[0011] Optionally, the top of the abutment block is provided with a mounting screw hole for the lower end of the limiting rod to be arranged, and the lower end of the limiting rod has a mounting stud that mates with the mounting screw hole.

[0012] By adopting the above technical solution, the connection relationship between the abutment block and the limiting rod is disclosed. By using the mounting screw hole and the mounting stud, the limiting rod and the abutment block can be detachably connected, which is helpful for the installation and replacement of the limiting rod.

[0013] Optionally, the abutment block is an arc-shaped block that fits against the sidewall of the arc-shaped groove.

[0014] By adopting the above technical solution, the arc-shaped structure allows the abutment block to better fit with the arc-shaped groove, which helps to increase the contact area with irregularly shaped workpieces, thereby helping to improve the clamping stability of irregularly shaped workpieces.

[0015] Optionally, the first driving mechanism includes a first driving cylinder mounted on the bottom side of the mounting base, a first movable rod connected to the output end of the first driving cylinder and used for the rotating pressure rod to abut against; the end of the first movable rod has a first abutting surface for the driving end of the rotating pressure rod to abut against; the mounting base has a first arrangement hole penetrating the inner and outer surfaces and used for the first movable rod to slide up and down.

[0016] By adopting the above technical solution, the specific structure of the first driving mechanism is disclosed. The first driving cylinder drives the first movable rod to slide up and down in the first arrangement hole, so that the first abutting surface at the end of the first movable rod abuts the driving end of the rotating pressure rod and drives the rotating pressure rod to swing up and down, thereby realizing the efficient and stable pressing operation of irregular workpieces.

[0017] Optionally, the first contact surface is an arc surface with the middle part higher than the outer edge.

[0018] By adopting the above technical solution, the arc surface makes the contact between the rotating pressure rod and the end of the first movable rod more stable, which helps to reduce the risk of the rotating pressure rod shifting left or right or wobbling during the up and down swinging process, and improves the clamping effect on irregular workpieces.

[0019] Optionally, the mounting base has a vertically arranged limiting column on the side of the rotating abutment seat near the first driving mechanism, and the bottom of the rotating pressure rod has a limiting groove along the length direction for the limiting column to slide.

[0020] By adopting the above technical solution, the combination of the limiting column and the limiting slide groove guides and limits the swing of the rotating pressure rod, which helps to ensure the stability of the swing process of the rotating pressure rod, so that the abutment block can more accurately press the irregular workpiece downwards and press it against the mounting bracket.

[0021] Optionally, the limiting structure includes a first abutting member for the lower end face of the mounting portion of the irregular workpiece to abut, a second abutting member for the fourth end face of the irregular workpiece to abut, and a limiting assembly for limiting the left and right sides of the mounting portion of the irregular workpiece; the limiting assembly includes a first abutting protrusion for the mounting portion to abut on the side away from the third pipeline, a second abutting protrusion opposite to the first abutting protrusion and for the mounting portion to abut on the side closer to the third pipeline, and a second driving mechanism arranged on one side of the first abutting protrusion and for pressing the mounting portion against the second abutting protrusion.

[0022] By adopting the above technical solution, the first abutting member and the second abutting member can be used to achieve stable arrangement of irregular workpieces, which helps to ensure the stability of irregular workpieces on tooling; by using the limiting component and the second driving mechanism to limit the left and right of the mounting part of the irregular workpiece, the risk of displacement or shaking during processing is reduced, which helps to further improve the fixing effect of the mounting part.

[0023] Optionally, the second driving mechanism includes a second driving cylinder mounted on the mounting bracket, a second movable rod arranged at the output end of the second driving cylinder and cooperating with the second abutting protrusion to clamp the mounting part of the irregular workpiece; the mounting bracket has a second arrangement hole at the lower end of the first abutting protrusion that penetrates the inner and outer surfaces and is used for the second movable rod to slide left and right.

[0024] By adopting the above technical solution, the specific structure of the second drive mechanism is disclosed. The second drive cylinder installed on the mounting bracket drives the second movable rod to slide left and right, so that the second movable rod cooperates with the second abutting protrusion, realizing stable and precise clamping of the irregular workpiece mounting part, which helps to improve the fixing effect of irregular workpiece on the tooling.

[0025] Optionally, the mounting base is provided with a positioning block on the side near the second driving mechanism, the positioning block having a positioning protrusion that mates with the second through hole of the irregular workpiece.

[0026] By adopting the above technical solution, and by using the positioning protrusion on the positioning block to cooperate with the second through hole of the irregular workpiece, the position of the irregular workpiece on the tooling can be accurately determined, which helps to further improve the accuracy and stability of the installation of irregular workpieces.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. A jig for irregularly shaped workpieces with a tunnel-type pressure plate, comprising a mounting base, a mounting bracket, and a first clamping assembly; when clamping and fixing irregularly shaped workpieces, the operator first places the irregularly shaped workpiece on the mounting bracket, the limiting structure can effectively position the irregularly shaped workpiece, then places the abutment block in the arc-shaped groove of the irregularly shaped workpiece, and inserts the rotating pressure rod into the appropriate position, so that the first abutment part is arranged in the second pipe and abuts against the top of the abutment block, and the middle section of the rotating pressure rod abuts against the rotating shaft, and the tail end of the rotating pressure rod abuts against the first driving mechanism; when the first driving mechanism is activated, the tail end of the rotating pressure rod swings upward, and the first abutment part swings downward and presses the abutment block into the arc-shaped groove of the irregularly shaped workpiece, thereby achieving clamping of the irregularly shaped workpiece without interference with the first end face, the second end face, and the third end face, which is helpful for subsequent processing of the first end face, the second end face, and the third end face;

[0029] 2. The limiting rod and the groove cooperate to limit the abutment block, so that the abutment block remains stable during the pressing process, reducing the risk of shaking and displacement of the rotating pressure rod during the pressing process, thereby pressing the irregular workpiece downwards onto the mounting bracket more accurately.

[0030] 3. By setting the abutment block into an arc-shaped structure, the abutment block can better fit the arc-shaped groove, which helps to increase the contact area between the abutment block and the irregular workpiece, thereby improving the clamping stability of the irregular workpiece. Attached Figure Description

[0031] Figure 1-4 This is a schematic diagram of the structure of the irregularly shaped workpiece in the embodiments of this application.

[0032] Figure 5 This is a schematic diagram of the cooperation between the irregular part fixture and the irregular part in the embodiments of this application.

[0033] Figure 6 This is a schematic diagram of the irregular part fixture in the embodiments of this application.

[0034] Figure 7 This is a schematic diagram of the engagement between the abutment block and the rotating pressure rod in an embodiment of this application.

[0035] Figure 8 This is a cross-sectional view of the irregular part clamp along the length of the mounting base in the embodiments of this application.

[0036] Figure 9 yes Figure 8 A schematic diagram of the contact block at point A with the arc-shaped groove.

[0037] Figure 10 This is a cross-sectional view of the irregular part clamp in the embodiment of this application along the length direction perpendicular to the mounting base.

[0038] Explanation of reference numerals in the attached drawings: 1. Outer shell body; 11. First pipe; 12. Second pipe; 13. Mounting part; 131. First end face; 132. First through hole; 133. Second through hole; 14. First column sleeve; 141. Second end face; 15. Arc-shaped groove; 16. Third pipe; 161. Third end face; 17. Fourth end face; 2. Mounting base; 21. First arrangement hole; 22. Second abutment member; 23. Positioning block; 231. Positioning protrusion; 24. Limiting column; 3. Mounting bracket; 31. First abutment member; 32. Limiting component; 321. First abutment protrusion; 3211. Arc-shaped long groove; 322. Second abutment protrusion; 323. 3231, Second drive mechanism; 3232, Second drive cylinder; 3232, Second movable rod; 32321, Second abutting surface; 324, Second arrangement hole; 4, First clamping assembly; 41, Abutting block; 411, Limiting rod; 4111, Mounting stud; 412, Mounting through hole; 42, Rotating pressure rod; 421, First abutting part; 4211, Abutting groove; 4212, Abutting plane; 4213, Arrangement groove; 422, Limiting slide groove; 43, Rotating abutting seat; 431, Rotating bracket; 432, Rotating shaft; 44, First drive mechanism; 441, First drive cylinder; 442, First movable rod; 4421, First abutting surface. Detailed Implementation

[0039] The following is in conjunction with the appendix Figure 1-10 This application will be described in further detail.

[0040] This application discloses a fixture for irregularly shaped parts with a tunnel-type pressure plate. The structures of irregularly shaped workpieces involved in this application can all be referred to here. Figure 1-4 This will not be cited separately in the following text.

[0041] Reference Figure 5 The irregular part clamp with tunnel-type pressure plate includes a mounting base 2, a mounting bracket 3 arranged on the mounting base 2 for placing the irregular workpiece, and a first clamping assembly 4 for pressing the irregular workpiece downward against the mounting bracket 3.

[0042] Reference Figure 6 and Figure 7The first clamping assembly 4 includes an abutment block 41 disposed within the arc-shaped groove 15 of the irregularly shaped workpiece, a rotating pressure rod 42 for pressing the abutment block 41 downward, a rotating abutment seat 43 disposed on the mounting base 2 for rotating the rotating pressure rod 42, and a first drive mechanism 44 for driving the rotating pressure rod 42 to swing up and down. One end of the rotating pressure rod 42 is disposed within the second pipe 12 of the irregularly shaped workpiece, and the other end of the rotating pressure rod 42 cooperates with the first drive mechanism 44 to swing up and down. The mounting base 2 has a vertically arranged limiting column 24 on the side of the rotating abutment seat 43 near the first drive mechanism 44, and the bottom of the rotating pressure rod 42 has a limiting groove 422 along its length for sliding the limiting column 24. The rotating abutment seat 43 includes a rotating bracket 431 mounted on the mounting base 2 and a rotating shaft 432 fixed to the end of the rotating bracket 431. The rotating shaft 432 is arranged perpendicular to the length direction of the rotating pressure rod 42 and is used for the upper end face of the rotating pressure rod 42 to abut. The rotating abutment seat 43 has an arrangement cavity formed on the lower side of the rotating shaft 432 for the rotating pressure rod 42 to be inserted into.

[0043] Reference Figure 8 The first drive mechanism 44 includes a first drive cylinder 441 disposed on the bottom side of the mounting base 2, and a first movable rod 442 connected to the output end of the first drive cylinder 441 and used for the lower end of the rotating pressure rod 42 to abut against it. The mounting base 2 has a first arrangement hole 21 penetrating through the inner and outer surfaces for the first sliding rod to slide up and down. The first movable rod 442 has a first abutting surface 4421 for the rotating pressure rod 42 to abut against. In this embodiment, the first abutting surface 4421 is an arc surface with the middle part higher than the outer edge.

[0044] Reference Figure 7 The rotating pressure rod 42 has a first abutting portion 421 arranged inside the second pipe 12 and abutting against the abutting block 41. The first abutting portion 421 is a horizontally arranged cylindrical structure, and an abutting groove 4211 is formed at the bottom of one end near the abutting block 41. The abutting groove 4211 extends along the length of the first abutting portion 421 and has an abutting plane 4212 for the upper surface of the abutting block 41 to abut against.

[0045] Reference Figure 7 and Figure 9The top of the abutment block 41 is provided with a limiting rod 411 vertically arranged within the first pipeline 11. The top of the abutment block 41 has a mounting through hole 412 for threaded installation of the lower end of the limiting rod 411, and the lower end of the limiting rod 411 has a mounting stud 4111 that mates with the mounting screw hole. The first abutment portion 421 has an arrangement groove 4213 on the side facing the limiting rod 411, penetrating the upper and lower end faces of the first abutment portion 421 and used for arranging the limiting rod 411. The arrangement groove 4213 extends along the length of the first abutment portion 421, and the length of the first arrangement groove 4213 is less than the length of the abutment plane 4212. In this embodiment, the abutment block 41 is an arc-shaped block that fits against the sidewall of the arc-shaped groove 15, making it less prone to shifting when the abutment block 41 is arranged within the arc-shaped groove 15.

[0046] Reference Figure 8 and Figure 10 The mounting base 2 and the mounting bracket 3 have limiting structures for arranging irregularly shaped workpieces. The limiting structures include a first abutting member 31 arranged on the mounting bracket 3 for abutting the lower end face of the mounting portion 13 of the irregularly shaped workpiece; a second abutting member 22 arranged on the mounting base 2 for abutting the fourth end face 17 of the irregularly shaped workpiece; and a limiting assembly 32 arranged on the mounting bracket 3 for left and right limiting of the mounting portion 13 of the irregularly shaped workpiece. Two first abutting members 31 are symmetrically arranged in the middle of the mounting bracket 3. The second abutting member 22 is located on the side of the mounting bracket 3 near the rotating abutment seat 43.

[0047] Reference Figure 6 and Figure 10 The limiting component 32 includes a first abutting protrusion 321 for the mounting part 13 to abut against the side away from the third pipe 16, a second abutting protrusion 322 opposite to the first abutting block 41 for the mounting part 13 to abut against the side near the third pipe 16, and a second driving mechanism 323 arranged on one side of the first abutting protrusion 321 for pressing the mounting part 13 against the second abutting protrusion 322. A positioning block 23 is provided on the mounting base 2 and on the side near the second driving mechanism 323. A positioning protrusion 231 is provided on the top of the positioning block 23 to mate with the second through hole 133 of the irregularly shaped workpiece.

[0048] Reference Figure 10The second drive mechanism 323 includes a second drive cylinder 3231 mounted on the side of the mounting bracket 3, and a second movable rod 3232 arranged at the output end of the second drive cylinder 3231 and cooperating with the second abutment protrusion 322 to clamp the mounting portion 13 of the irregular workpiece. The mounting bracket 3 has a second arrangement hole 324 at the lower end of the first abutment protrusion 321, penetrating the inner and outer surfaces, for the second movable rod 3232 to slide left and right. The end of the second movable rod 3232 has a second abutment surface 32321 for the mounting portion 13 to abut against. In this embodiment, the second abutment surface 32321 is a planar structure. The second movable rod 3232 is a horizontally arranged cylindrical rod, and the lower end of the first abutment protrusion 321 has an arc-shaped long groove 3211 for the upper end of the second movable rod 3232 to slide.

[0049] The implementation principle of the irregular workpiece clamp with tunnel-type pressure plate in this application embodiment is as follows: When clamping and fixing the irregular workpiece, the operator first arranges the irregular workpiece at the mounting bracket 3, inserts the second through hole 133 of the irregular workpiece into the positioning protrusion 231, and makes the lower end face of the mounting part 13 of the irregular workpiece abut against the upper end face of the two first abutting parts 31 respectively, and the fourth end face 17 abuts against the upper end face of the second abutting part 22, thereby achieving effective positioning of the irregular workpiece; then the abutting block 41 is arranged in the arc groove 15 of the irregular workpiece, and then the rotating pressure rod 42 is inserted into the appropriate position, so that the first abutting part 421 is arranged in the first... The two pipes 12 are connected to the top of the abutment block 41, and the middle section of the rotating pressure rod 42 is engaged with the rotating shaft 432. The tail end of the rotating pressure rod 42 is engaged with the first drive mechanism 44. When the first drive mechanism 44 is activated, the tail end of the rotating pressure rod 42 swings upward, and the first abutment part 421 swings downward and presses the abutment block 41 into the arc groove 15 of the irregular workpiece. This achieves clamping of the irregular workpiece without interfering with the first end face 131, the second end face 141 and the third end face 161, which is helpful for subsequent processing of the first end face 131, the second end face 141 and the third end face 161.

[0050] 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. An irregular shaped part fixture having a tunneling platen, characterized by, The device includes a mounting base (2), a mounting bracket (3) disposed on the mounting base (2) for placing irregularly shaped workpieces, and a first clamping assembly (4) for pressing the irregularly shaped workpieces downward against the mounting bracket (3); the mounting base (2) and the mounting bracket (3) have limiting structures for placing irregularly shaped workpieces; the first clamping assembly (4) includes an abutment block (41) disposed in an arc-shaped groove (15) of the irregularly shaped workpiece, a rotating pressure rod (42) for pressing the abutment block (41) downward, and a clamping assembly (42) disposed on the mounting base (2). 2) A rotating abutment seat (43) for rotatably arranging the rotating pressure rod (42) and a first driving mechanism (44) for driving the rotating pressure rod (42) to swing up and down; one end of the rotating pressure rod (42) is arranged in the second pipe (12) of the irregular workpiece and has a first abutment part (421) that abuts against the abutment block (41); the rotating abutment seat (43) has a rotating shaft (432) arranged perpendicular to the length direction of the rotating pressure rod (42) and used for abutting the upper end face of the rotating pressure rod (42).

2. A special-shaped workpiece clamp having a tunneling pressure plate according to claim 1, characterized in that, The top of the abutment block (41) is provided with a vertically arranged limiting rod (411); the first abutment part (421) is provided with an arrangement groove (4213) along the length direction for arranging the limiting rod (411).

3. A special-shaped workpiece clamp having a tunneling pressure plate according to claim 2, wherein The top of the abutment block (41) is provided with a mounting screw hole for the lower end of the limiting rod (411), and the lower end of the limiting rod (411) has a mounting stud (4111) that mates with the mounting screw hole.

4. A special-shaped workpiece clamp having a tunneling pressure plate according to claim 1, wherein The abutting block (41) is an arc-shaped block that fits against the side wall of the arc-shaped groove (15).

5. A special-shaped workpiece clamp having a tunneling pressure plate according to claim 1, wherein The first drive mechanism (44) includes a first drive cylinder (441) mounted on the bottom side of the mounting base (2), and a first movable rod (442) connected to the output end of the first drive cylinder (441) and used for the rotating pressure rod (42) to abut against it; the end of the first movable rod (442) has a first abutting surface (4421) for the driving end of the rotating pressure rod (42) to abut against it; the mounting base (2) has a first arrangement hole (21) penetrating the inner and outer surfaces and used for the first movable rod (442) to slide up and down.

6. A profiled part clamp having a tunneling platen according to claim 5, characterized in that, The first contact surface (4421) is an arc surface with the middle part higher than the outer edge.

7. A contoured part fixture having a tunneling platen as defined in claim 1 wherein, The mounting base (2) has a vertically arranged limiting column (24) on the side of the rotating abutment seat (43) near the first driving mechanism (44), and the bottom of the rotating pressure rod (42) has a limiting groove (422) along the length direction for the limiting column (24) to slide.

8. A contoured part fixture having a tunneling platen as defined in claim 1 wherein, The limiting structure includes a first abutting member (31) arranged on the mounting bracket (3) for abutting the lower end face of the mounting part (13) of the irregular workpiece, a second abutting member (22) arranged on the mounting base (2) for abutting the fourth end face (17) of the irregular workpiece, and a limiting component (32) arranged on the mounting bracket (3) for limiting the left and right sides of the mounting part (13) of the irregular workpiece; the limiting component (32) includes a first abutting protrusion (321) for abutting the side of the mounting part (13) away from the third pipeline (16), a second abutting protrusion (322) opposite to the first abutting protrusion (321) for abutting the side of the mounting part (13) close to the third pipeline (16), and a second driving mechanism (323) arranged on one side of the first abutting protrusion (321) for pressing the mounting part (13) against the second abutting protrusion (322).

9. A profiled part clamp having a tunneling platen according to claim 8, characterized in that, The second drive mechanism (323) includes a second drive cylinder (3231) mounted on the mounting bracket (3) and a second movable rod (3232) arranged at the output end of the second drive cylinder (3231) and cooperating with the second abutment protrusion (322) to clamp the mounting part (13) of the irregular workpiece; the mounting bracket (3) has a second arrangement hole (324) at the lower end of the first abutment protrusion (321) that penetrates the inner and outer surfaces and is used for the second movable rod (3232) to slide left and right.

10. A profiled part clamp having a tunneling platen according to claim 9, characterized in that, The mounting base (2) has a positioning block (23) on the side near the second drive mechanism (323), and the positioning block (23) has a positioning protrusion (231) that mates with the second through hole (133) of the irregular workpiece.

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