A quick-change device for holding parts in a high-speed precision punch press

Abstract

The present invention belongs to the field of mechanical processing, and particularly relates to a workpiece clamping quick-change device for a high-speed precision punching machine, comprising a base, a mounting seat and a quick connector, wherein the mounting seat is provided with a first groove, the side of the mounting seat is provided with a third groove, and an auxiliary clamping jaw assembly is clamped and installed in the third groove; one end of the quick connector is clamped and installed in the first groove, and the other end of the quick connector is fixedly connected to a pneumatic manipulator. The quick-change clamping device of the present invention can quickly replace different types of manipulators through the cooperation of the mounting seat and the clamping sleeve, which simplifies the replacement steps and makes the manipulator replacement operation more convenient; when the quick connector is installed in cooperation with the mounting seat, there is no need to connect the air pipe separately, thereby greatly saving the replacement time; the device is more stable when clamping the workpiece to prevent it from falling, and the auxiliary clamping jaw assembly is also easy to replace, and can be quickly replaced according to the shape of the workpiece when in use.

Description

Technical Field

[0001] The invention belongs to the field of mechanical processing, and in particular relates to a workpiece clamping quick-change device for a high-speed precision punching machine. Background Art

[0002] A punch press is a desktop stamping press. If the material is loaded manually during the loading process, the efficiency is low and there are unsafe factors. Therefore, most punch presses now use robots to load materials. The robots can automatically complete the specified actions according to the preset program to realize automatic clamping and transportation of objects.

[0003] In the process of cooperation between the manipulator and the punch press, the following problems often occur. The first is that the stamped parts are of various types and shapes. During production, workers need to frequently replace different manipulators to produce different products. The existing manipulators have a complicated replacement process, which delays a lot of production time; and the parts are prone to drop when the manipulator grabs the parts for transportation, which may cause production suspension or even damage to the punch press. Therefore, the present invention provides a workpiece clamping quick-change device for a high-speed precision punch press. Summary of the invention

[0004] In view of the above problems, the present invention provides a workpiece clamping quick-change device for a high-speed precision punching machine, comprising a base, a mounting seat and a quick connector, wherein a placement bin is provided in the base, an air compressor is fixedly installed in the placement bin, a telescopic mechanism is fixedly installed on the base, and the mounting seat is fixedly installed on one end of the output shaft of the telescopic mechanism;

[0005] The mounting seat is provided with a first groove, the side of the mounting seat is provided with a third groove, and the third groove is provided with an auxiliary clamping claw assembly;

[0006] A pin hole is provided on the surface of the mounting seat, the opening of the pin hole and the opening of the first groove are located on the same side of the mounting seat, and one end of the pin hole passes through the third groove;

[0007] A first threaded hole is formed on the side of the mounting seat, and one end of the first threaded hole is connected to the pin hole;

[0008] One end of the quick connector is clamped and installed in the first groove, and the other end of the quick connector is fixedly connected to a pneumatic manipulator;

[0009] A limit plate is installed on the side wall of the quick connector, and a plug pin is fixedly installed on a side of the limit plate away from the pneumatic manipulator, and the plug pin is arranged corresponding to the pin hole;

[0010] A second threaded hole is formed on the plug pin, and the second threaded hole is arranged corresponding to the first threaded hole;

[0011] The plug pin passes through the attached clamping jaw assembly and is located in the pin hole. A screw is arranged in the first threaded hole, and one end of the screw is threadedly connected to the second threaded hole.

[0012] Preferably, the telescopic mechanism comprises a first cylinder and a second cylinder;

[0013] An adapter plate is fixedly mounted on one end of the output rod of the first cylinder, the second cylinder is fixedly mounted on the lower surface of the adapter plate, and the extension direction of the output shaft of the second cylinder is perpendicular to the lower surface of the adapter plate; the mounting seat is fixedly mounted on one end of the output rod of the second cylinder;

[0014] The first cylinder and the second cylinder are connected to the air compressor through air pipes respectively.

[0015] Preferably, a second groove is formed at the bottom of the first groove, and the cross-sectional area of ​​the first groove is larger than the cross-sectional area of ​​the second groove;

[0016] The third grooves are provided with two groups, the two groups of the third grooves are respectively located on both sides of the first groove, and the two groups of the third grooves are symmetrically arranged, and the inner tops of the two groups of the third grooves are both provided with cylindrical grooves.

[0017] Preferably, a trachea head is fixedly mounted at the bottom of the second groove, the trachea head is a hard air pipe, and one end of the trachea head is connected to the air compressor;

[0018] An annular groove is provided at the bottom of the second groove, the inner diameter of the annular groove is larger than the outer diameter of the tracheal head, the tracheal head is located in the inner circle of the annular groove, and the tracheal head and the annular groove are symmetrically arranged in two groups.

[0019] Preferably, the pin holes are symmetrically arranged in two groups, and the two groups of pin holes are respectively located on both sides of the straight side of the first groove, the limiting plates are symmetrically arranged in two groups, and the first threaded holes are also opened in two groups, and the two groups of first threaded holes are symmetrically arranged.

[0020] Preferably, the auxiliary clamping jaw assembly comprises a jam block, an angle cylinder, a clamping jaw and a buckle mechanism;

[0021] The jam block is clamped in the third groove, the angle cylinder is fixedly installed on one side of the jam block, the angle cylinder output shaft is fixedly connected to one end of the clamp, and the buckle mechanism of the jam block is arranged at the upper end of the jam block.

[0022] Preferably, a positioning hole is provided on the blocking block, and the diameter of the positioning hole is the same as that of the pin hole;

[0023] A first blind hole and a second blind hole are respectively formed at the upper end of the jam block, and one end of the first blind hole and the second blind hole are connected through a cavity.

[0024] Preferably, the buckle mechanism comprises a button, a first spring, a cylindrical pin and a second spring;

[0025] The button is fixedly connected to the cylindrical pin via a connecting rod, and the connecting rod is located in the cavity;

[0026] One end of the first spring and the second spring are both fixedly mounted on the bottom of the cavity;

[0027] The other end of the first spring is fixedly connected to one end of the button, and the other end of the button passes through the first blind hole and is located above the blocking block;

[0028] The other end of the second spring is fixedly connected to one end of the cylindrical pin, and the other end of the cylindrical pin passes through the second blind hole and is located above the jamming block.

[0029] Preferably, the quick connector includes a first fixing block and a second fixing block;

[0030] One end of the first fixing block is fixedly connected to one end of the second fixing block, and the other end of the first fixing block is fixedly connected to the pneumatic manipulator;

[0031] The first fixing block is inserted into the first groove, and the second fixing block is inserted into the second groove.

[0032] Preferably, a sealing ring is fixedly mounted on the other end of the second fixing block, and the sealing ring is clamped in the annular groove;

[0033] The other end of the second fixing block is provided with an air pipe plug hole, the air pipe head is plugged into the air pipe plug hole, and one end of the air pipe plug hole is connected to the air path of the pneumatic manipulator.

[0034] The quick-change clamping device of the present invention can quickly replace different types of manipulators through the cooperation of the mounting base and the clamping sleeve, which simplifies the replacement steps and makes the manipulator replacement operation more convenient; through the cooperation of the trachea head and the trachea jack, when the quick connector is installed with the mounting base, there is no need to connect the trachea separately, thereby greatly saving replacement time; by installing the auxiliary clamping jaw assembly on the mounting base, the device can be made more stable when clamping the workpiece to avoid falling, and the auxiliary clamping jaw assembly is also easy to replace and can be quickly replaced according to the shape of the workpiece when in use.

[0035] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 A schematic diagram of a base station according to an embodiment of the present invention is shown;

[0038] Figure 2 A schematic diagram of a telescopic mechanism according to an embodiment of the present invention is shown;

[0039] Figure 3 Shows a side view of a mounting base according to an embodiment of the present invention;

[0040] Figure 4 shows a cross-sectional view of a mounting base according to an embodiment of the present invention;

[0041] Figure 5 shows a cross-sectional view of an accessory jaw assembly according to an embodiment of the present invention;

[0042] Figure 6 For the present invention Figure 5 The enlarged schematic diagram of point B in the middle;

[0043] Figure 7 Shows a side view of a quick connector according to an embodiment of the present invention;

[0044] Figure 8 A cross-sectional view of a quick connector according to an embodiment of the present invention is shown;

[0045] Fig. 9 It shows an assembly diagram of a quick connector and a mounting base according to an embodiment of the present invention;

[0046] Fig.10 For the present invention Fig. 9 Enlarged schematic diagram at point A in the middle.

[0047] In the figure: 1, base; 2, telescopic mechanism; 3, mounting seat; 301, first groove; 302, second groove; 303, third groove; 304, first threaded hole; 305, pin hole; 4, quick connector; 401, first fixing block; 402, second fixing block; 5, pneumatic manipulator; 6, air compressor; 7, first cylinder; 8, second cylinder; 9, adapter plate; 10, annular groove; 11, air pipe head; 12, attached clamping jaw assembly; 1 3. Block; 1301. Positioning hole; 1302. First blind hole; 1303. Second blind hole; 14. Angle cylinder; 15. Clamp; 16. Buckle mechanism; 1601. Button; 1602. First spring; 1603. Cylindrical pin; 1604. Second spring; 1605. Connecting rod; 17. Limiting plate; 1701. Plug pin; 1702. Second threaded hole; 18. Sealing ring; 19. Trachea jack; 20. Screw. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] The embodiment of the present invention provides a workpiece clamping quick-change device for a high-speed precision punch press, for example, Figure 1 and 2 As shown, the device includes a base 1, on which a telescopic mechanism 2 is fixedly mounted, an output end of the telescopic mechanism 2 is fixedly connected to a mounting seat 3, both side walls of the mounting seat 3 are clamped and fixed with auxiliary clamping jaw assemblies 12, two groups of the auxiliary clamping jaw assemblies 12 are symmetrically mounted, a quick connector 4 is detachably mounted at the lower end of the mounting seat 3, and a pneumatic manipulator 5 is fixedly mounted on the quick connector 4.

[0050] The quick connector 4 can be engaged with the mounting base 3. By pre-fixing different types of pneumatic manipulators 5 with the quick connector 4, when replacing the pneumatic manipulator 5, it is only necessary to remove the quick connector 4 from the mounting base 3, and the pneumatic manipulator 5 can be quickly replaced together, thereby avoiding the slow replacement caused by the different types of pneumatic manipulators 5 and improving work efficiency. The auxiliary clamping claw assembly 12 can cooperate with the pneumatic manipulator 5 to clamp the workpiece, making the workpiece more stable and avoiding falling.

[0051] The base 1 is provided with a storage compartment, in which an air compressor 6 is fixedly installed;

[0052] The telescopic mechanism 2 comprises a first cylinder 7 and a second cylinder 8;

[0053] An adapter plate 9 is fixedly installed on one end of the output rod of the first cylinder 7, and the second cylinder 8 is fixedly installed on the lower surface of the adapter plate 9, and the extension direction of the output shaft of the second cylinder 8 is perpendicular to the lower surface of the adapter plate 9; the mounting seat 3 is fixedly installed on one end of the output rod of the second cylinder 8.

[0054] The first cylinder 7 and the second cylinder 8 are connected to the air compressor 6 through air pipes respectively.

[0055] The mounting base 3 can be moved in the horizontal direction by the first cylinder 7 , and the mounting base 3 can be moved in the vertical direction by the second cylinder 8 .

[0056] like Figure 3 and Figure 4 As shown, the mounting seat 3 is provided with a first groove 301, and a second groove 302 is provided at the bottom of the first groove 301, and the cross-sectional area of ​​the first groove 301 is larger than the cross-sectional area of ​​the second groove 302;

[0057] A trachea head 11 is fixedly mounted at the bottom of the second groove 302. The trachea head 11 is a hard air tube, and one end of the trachea head 11 is connected to the air compressor 6.

[0058] An annular groove 10 is provided at the bottom of the second groove 302, the inner diameter of the annular groove 10 is larger than the outer diameter of the tracheal head 11, the tracheal head 11 is located in the inner circle of the annular groove 10, and the tracheal head 11 and the annular groove 10 are symmetrically arranged in two groups;

[0059] The two symmetrical sides of the mounting seat 3 are both provided with third grooves 303, and the two groups of the third grooves 303 are located on both sides of the straight side of the first groove 301, and the two groups of the third grooves 303 are symmetrically arranged, and the inner tops of the two groups of the third grooves 303 are both provided with cylindrical grooves, and the auxiliary clamping jaw assembly 12 is clamped and installed in the third grooves 303;

[0060] The surface of the mounting seat 3 is provided with a pin hole 305, one end of which passes through the third groove 303, and two groups of pin holes 305 are symmetrically arranged, and the two groups of pin holes 305 are respectively located on both sides of the straight edge of the first groove 301;

[0061] The two symmetrical sides of the mounting seat 3 are each provided with a first threaded hole 304, one end of the first threaded hole 304 is connected to the pin hole 305, and the two groups of first threaded holes 304 are symmetrically arranged;

[0062] like Figure 5 and 6As shown, the auxiliary clamping jaw assembly 12 includes a jam block 13, an angle cylinder 14, a clamping jaw 15 and a buckle mechanism 16;

[0063] The blocking block 13 can be clamped in the third groove 303, the angle cylinder 14 is fixedly installed on one side of the blocking block 13, the output shaft of the angle cylinder 14 is fixedly connected to one end of the clamp 15, and the buckle mechanism 16 of the blocking block 13 is arranged at the upper end of the blocking block 13;

[0064] The blocking block 13 is provided with a positioning hole 1301 , and the diameter of the positioning hole 1301 is the same as that of the pin hole 305 .

[0065] The upper end of the blocking block 13 is respectively provided with a first blind hole 1302 and a second blind hole 1303, and one end of the first blind hole 1302 and the second blind hole 1303 are connected through a cavity;

[0066] The buckle mechanism 16 includes a button 1601, a first spring 1602, a cylindrical pin 1603 and a second spring 1604;

[0067] The button 1601 is fixedly connected to the cylindrical pin 1603 via a connecting rod 1605, and the connecting rod 1605 is located in the cavity;

[0068] One end of the first spring 1602 and the second spring 1604 are both fixedly mounted on the bottom of the cavity;

[0069] The other end of the first spring 1602 is fixedly connected to one end of the button 1601, and the other end of the button 1601 passes through the first blind hole 1302 and is located above the jamming block 13;

[0070] The other end of the second spring 1604 is fixedly connected to one end of the cylindrical pin 1603 , and the other end of the cylindrical pin 1603 passes through the second blind hole 1303 and is located above the blocking block 13 .

[0071] By installing the auxiliary clamping jaw assembly 12 on the mounting seat 3, the device can be made more stable when clamping the workpiece to prevent it from falling, and the auxiliary clamping jaw assembly 12 can be easily replaced by being clamped in the third groove 303 through the plug block 13. It can be quickly replaced according to the shape of the workpiece when in use.

[0072] like Figure 7 and Figure 8 As shown, the quick connector 4 includes a first fixing block 401 and a second fixing block 402;

[0073] One end of the first fixing block 401 is fixedly connected to one end of the second fixing block 402, and the other end of the first fixing block 401 is fixedly connected to the pneumatic manipulator 5;

[0074] The first fixing block 401 has the same shape as the first groove 301 , and the second fixing block 402 has the same shape as the second groove 302 ;

[0075] Two sets of limiting plates 17 are symmetrically mounted on the side wall of the first fixing block 401. A plug pin 1701 is fixedly mounted on one side of the limiting plate 17 close to the second fixing block 402. The plug pin 1701 is arranged corresponding to the pin hole 305.

[0076] The plug pin 1701 is provided with a second threaded hole 1702, and the second threaded hole 1702 is arranged corresponding to the first threaded hole 304;

[0077] A sealing ring 18 is fixedly mounted on the other end of the second fixing block 402, and the sealing ring 18 is arranged corresponding to the annular groove 10;

[0078] The other end of the second fixing block 402 is provided with an air pipe plug hole 19 , and the air pipe plug hole 19 is arranged corresponding to the air pipe head 11 , and one end of the air pipe plug hole 19 is connected to the air path of the pneumatic manipulator 5 .

[0079] For example, Fig. 9 and Fig.10 As shown, the first fixing block 401 is inserted into the first groove 301, the second fixing block 402 is inserted into the second groove 302, the trachea head 11 is inserted into the trachea insertion hole 19, and the sealing ring 18 is clamped in the annular groove 10;

[0080] Through the cooperation between the trachea head 11 and the trachea insertion hole 19, when the quick connector 4 is installed with the mounting base 3, there is no need to connect the trachea separately, thereby greatly saving the replacement time. Through the cooperation between the sealing ring 18 and the annular groove 10, the connection between the trachea head 11 and the trachea insertion hole 19 can be sealed to avoid air leakage.

[0081] The blocking block 13 is clamped in the third groove 303, and the cylindrical pin 1603 is clamped in the cylindrical groove. The blocking block 13 and the third groove 303 can be fixed by the cooperation between the cylindrical pin 1603 and the cylindrical groove.

[0082] The plug pin 1701 passes through the positioning hole 1301 and is located in the pin hole 305. The first fixing block 401 and the first groove 301 can be tightly connected by the plug pin 1701 cooperating with the pin hole 305. The plug pin 1701 and the positioning hole 1301 can make the plug block 13 and the third groove 303 more tightly fixed.

[0083] A screw 20 is disposed in the first threaded hole 304 , and one end of the screw 20 is threadedly connected to the second threaded hole 1702 . The screw 20 cooperates with the second threaded hole 1702 , so that the plug pin 1701 is fixed in the pin hole 305 .

[0084] Through the above cooperation, the quick connector 4 and the auxiliary clamping jaw assembly 12 can be removed by simply unscrewing the screw 20 during disassembly, which is very simple and convenient. Moreover, through the above cooperation, the quick connector 4 and the auxiliary clamping jaw assembly 12 are connected to each other, making the installation of the two more secure.

[0085] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A workpiece clamping quick-change device for a high-speed precision punching machine, characterized in that: The invention comprises a base (1), a mounting seat (3) and a quick connector (4); the base (1) is provided with a storage compartment, an air compressor (6) is fixedly installed in the storage compartment, a telescopic mechanism (2) is fixedly installed on the base (1), and the mounting seat (3) is fixedly installed on one end of the output shaft of the telescopic mechanism (2); a first groove (301) is provided on the mounting seat (3), a third groove (303) is provided on the side of the mounting seat (3), and an auxiliary clamping claw is clamped and installed in the third groove (303). The assembly (12) comprises a second groove (302) at the bottom of the first groove (301), and the cross-sectional area of ​​the first groove (301) is larger than the cross-sectional area of ​​the second groove (302); a trachea head (11) is fixedly mounted at the bottom of the second groove (302); a pin hole (305) is formed on the surface of the mounting seat (3), and the opening of the pin hole (305) and the opening of the first groove (301) are located on the same side of the mounting seat (3), and one end of the pin hole (305) penetrates the A third groove (303); a first threaded hole (304) is provided on the side of the mounting seat (3), one end of the first threaded hole (304) is connected to the pin hole (305); one end of the quick connector (4) is snap-fitted and installed in the first groove (301), and the other end of the quick connector (4) is fixedly connected to the pneumatic manipulator (5); a limit plate (17) is installed on the side wall of the quick connector (4), and a plug pin (17) is fixedly installed on the side of the limit plate (17) away from the pneumatic manipulator (5). 701), the plug pin (1701) and the pin hole (305) are arranged correspondingly; the plug pin (1701) is provided with a second threaded hole (1702), and the second threaded hole (1702) and the first threaded hole (304) are arranged correspondingly; the plug pin (1701) passes through the auxiliary clamping jaw assembly (12) and is located in the pin hole (305), and a screw (20) is arranged in the first threaded hole (304), and one end of the screw (20) is threadedly connected to the second threaded hole (1702).

2. The quick-change device for clamping workpieces for a high-speed precision punch press according to claim 1, characterized in that: The telescopic mechanism (2) comprises a first cylinder (7) and a second cylinder (8); an adapter plate (9) is fixedly mounted on one end of the output rod of the first cylinder (7); the second cylinder (8) is fixedly mounted on the lower surface of the adapter plate (9), and the telescopic direction of the output shaft of the second cylinder (8) is perpendicular to the lower surface of the adapter plate (9); the mounting seat (3) is fixedly mounted on one end of the output rod of the second cylinder (8); the first cylinder (7) and the second cylinder (8) are respectively connected to the air compressor (6) through air pipes; the third groove (303) is provided with two groups, the two groups of the third grooves (303) are respectively located on both sides of the first groove (301), and the two groups of the third grooves (303) are symmetrically arranged, and the inner tops of the two groups of the third grooves (303) are both provided with cylindrical grooves.

3. The quick-change device for clamping workpieces for a high-speed precision punch press according to claim 2, characterized in that: The trachea head (11) is a hard air tube, and one end of the trachea head (11) is connected to the air compressor (6); an annular groove (10) is provided at the bottom of the second groove (302), the inner diameter of the annular groove (10) is larger than the outer diameter of the trachea head (11), the trachea head (11) is located in the inner circle of the annular groove (10), and the trachea head (11) and the annular groove (10) are symmetrically arranged in two groups.

4. The workpiece clamping quick-change device for a high-speed precision punch press according to claim 1, characterized in that: The pin holes (305) are symmetrically arranged in two groups, and the two groups of pin holes (305) are respectively located on both sides of the straight edge of the first groove (301), the limiting plates (17) are symmetrically arranged in two groups, and the first threaded holes (304) are also opened in two groups, and the two groups of first threaded holes (304) are symmetrically arranged.

5. The workpiece clamping quick-change device for a high-speed precision punch press according to claim 1, characterized in that: The auxiliary clamping jaw assembly (12) comprises a jamming block (13), an angular cylinder (14), a clamping jaw (15) and a buckle mechanism (16); the jamming block (13) is clamped in the third groove (303), the angular cylinder (14) is fixedly mounted on one side of the jamming block (13), the output shaft of the angular cylinder (14) is fixedly connected to one end of the clamping jaw (15), and the buckle mechanism (16) of the jamming block (13) is arranged at the upper end of the jamming block (13).

6. The workpiece clamping quick-change device for a high-speed precision punch press according to claim 5, characterized in that: The blocking block (13) is provided with a positioning hole (1301), and the positioning hole (1301) has the same diameter as the pin hole (305); the upper end of the blocking block (13) is provided with a first blind hole (1302) and a second blind hole (1303), respectively, and one end of the first blind hole (1302) and the second blind hole (1303) are connected through a cavity.

7. The workpiece clamping quick-change device for a high-speed precision punch press according to claim 6, characterized in that: The buckle mechanism (16) comprises a button (1601), a first spring (1602), a cylindrical pin (1603) and a second spring (1604); the button (1601) and the cylindrical pin (1603) are fixedly connected via a connecting rod (1605), and the connecting rod (1605) is located in the cavity; one end of the first spring (1602) and the second spring (1604) are both fixedly mounted on the bottom of the cavity; the other end of the first spring (1602) is fixedly connected to one end of the button (1601), and the other end of the button (1601) passes through the first blind hole (1302) and is located above the jam block (13); the other end of the second spring (1604) is fixedly connected to one end of the cylindrical pin (1603), and the other end of the cylindrical pin (1603) passes through the second blind hole (1303) and is located above the jam block (13).

8. The workpiece clamping quick-change device for a high-speed precision punch press according to claim 7, characterized in that: The quick connector (4) comprises a first fixing block (401) and a second fixing block (402); one end of the first fixing block (401) is fixedly connected to one end of the second fixing block (402), and the other end of the first fixing block (401) is fixedly connected to the pneumatic manipulator (5); the first fixing block (401) is inserted into the first groove (301), and the second fixing block (402) is inserted into the second groove (302).

9. The workpiece clamping quick-change device for a high-speed precision punch press according to claim 8, characterized in that: A sealing ring (18) is fixedly mounted on the other end of the second fixed block (402), and the sealing ring (18) is snap-fitted into the annular groove (10); a trachea plug hole (19) is provided on the other end of the second fixed block (402), and the trachea head (11) is plugged into the trachea plug hole (19), and one end of the trachea plug hole (19) is connected to the air path of the pneumatic manipulator (5).

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