Workpiece clamping device for profiled part grinding and cutting

Abstract

The application provides a workpiece clamping device for polishing and cutting of a special-shaped piece, which comprises a rack, a base provided with a plurality of sliding channels, a supporting and clamping device arranged in the sliding channels and in sliding connection with the base, a vertical column in sliding connection with the sliding channels, an auxiliary platform connected to the upper end of the vertical column and provided with a groove, a first air hole formed in the bottom of the groove and a first air valve connected to the outside of the first air hole, a supporting and limiting column in sealing plug connection with the groove and in sliding connection with the auxiliary platform, a first spring in the groove, a clamping column at the other end of the upper surface of the auxiliary platform and in sliding connection with the auxiliary platform, and a second driving assembly arranged in the auxiliary platform and used for driving the clamping column to reciprocatingly displace along the length direction of the limiting platform. The technical scheme realizes the leveling or angle adjustment of the special-shaped piece, finally realizes the clamping effect through the sliding of the clamping column and improves the stability of the fixation.

Description

Technical Field

[0001] This invention generally relates to the field of machine tools for cutting or polishing, and specifically to a workpiece clamping device for grinding and cutting irregularly shaped parts. Background Technology

[0002] In the field of machining, the positioning accuracy and clamping efficiency of the workpiece clamping device directly affect the machining quality and process cost in the grinding and cutting of irregular parts (such as metal components with irregular curved surfaces, multi-angle bends or asymmetrical structures).

[0003] Traditional special fixtures for irregularly shaped parts mainly adopt a design scheme that combines a lateral clamping mechanism with a bottom rigid bracket. Specifically, adjustable lateral grippers or pneumatic pressure arms are set on the fixture base to achieve circumferential constraint of the workpiece through multi-point lateral pressure. At the same time, a metal bracket that matches the contour height of the irregularly shaped part is welded or bolted to the bottom of the workpiece to provide vertical support.

[0004] However, this technical solution has significant drawbacks: First, the bottom support needs to be customized according to the three-dimensional contour of a specific workpiece. From surveying and modeling to welding and installation, a lot of preparation time is required. Especially in the scenario of small-batch, multi-variety production, the cost of a single support can account for as much as 25%-40%, which seriously restricts the demand for flexible production.

[0005] Therefore, the inventor believed that there was an urgent need for a clamp to meet the requirements for fixing different irregularly shaped parts. Summary of the Invention

[0006] In view of the problems existing in the prior art, the present invention provides a workpiece clamping device for grinding and cutting irregularly shaped parts, comprising: a frame, a base extending from one side of the frame, the base having multiple slide rails on its upper surface; a telescopic member located at the bottom of the base and connected to the base and the frame respectively, for driving the base to move vertically up and down; a support and locking device disposed in the slide rails and slidably connected to the base, the device comprising a column inserted into and slidably connected to the slide rails; and an auxiliary platform connected to the upper end of the column, the auxiliary platform being strip-shaped, with one end of its upper surface having a... The system includes a groove with a first air hole at the bottom that communicates with the outside, and a first air valve connected to the outside of the first air hole; a support limiting post that is sealed and inserted into the groove and slidably connected to the auxiliary platform along the height direction of the groove; a first spring located in the groove, with its two ends abutting against the bottom wall of the groove and the bottom wall of the support limiting post, respectively; a locking post located at the other end of the upper surface of the auxiliary platform and slidably connected to the auxiliary platform along the length direction of the limiting platform; and a second drive assembly located in the auxiliary platform that drives the locking post to move back to its original position along the length direction of the limiting platform.

[0007] With the above-mentioned technical features, the support area for irregularly shaped parts of different sizes can be adjusted by the mutual sliding of the column and the slide rail; and the irregular contours of the irregularly shaped parts can be supported by the vertical sliding of multiple support limiting columns. Then, the sliding position of the support limiting columns can be fixed by opening and closing the first air valve, and the leveling or angle adjustment of the irregularly shaped parts can be further realized. Finally, the locking function is achieved by the sliding of the locking column.

[0008] In some embodiments, the second drive assembly includes a second screw, which passes through the interior of the auxiliary platform along its length and is rotatably connected to the auxiliary platform around its central axis. The screw also passes through and is threadedly connected to the locking pins. A second rotating part is coaxially fixed to the periphery of the second screw. Thus, by turning the second rotating part, the second screw is rotated. Under the constraint of the auxiliary platform, the locking pins are displaced along the length of the second screw. Furthermore, the contact of the multiple locking pins with the irregularly shaped part achieves a limiting effect on the periphery of the irregularly shaped part.

[0009] In some embodiments, the upper surface of the base is provided with a plurality of limiting grooves in a circumferential direction around the center. The limiting grooves are cylindrical, and each limiting groove contains an adjusting pin that cooperates with the limiting groove. The slide rail is formed on the upper surface of the adjusting pin. This allows the sliding direction of the slide rail to be changed, thereby adjusting the support and locking area of ​​the auxiliary platform to more broadly adapt to the dimensions of different irregularly shaped parts.

[0010] In some embodiments, the bottom surface of the adjusting column extends to provide a limiting strip, and the bottom surface of the limiting groove has multiple mating grooves that accommodate the multi-angle rotation of the limiting strip and also accommodate the limiting strip. Thus, by rotating the adjusting column, the sliding direction of the slide rail is changed, and the mutual insertion of the limiting strip and the mating grooves limits the sliding direction of the slide rail, ensuring the stability of the final positioning and fixing of the irregularly shaped part.

[0011] In some embodiments, a first driving component is disposed within the adjusting column, the first driving component comprising:

[0012] The first screw passes through the slide along the length of the slide and is rotatably connected to the adjusting column along its own central axis. It passes through the column and is threadedly connected to the column.

[0013] The first rotating part is coaxially fixed to the periphery of the first screw. Thus, the rotation of the first rotating part drives the first screw to rotate, and under the limitation of the slide rail, it drives the column to slide within the slide rail, thereby achieving precise positioning of the column.

[0014] In some embodiments, an extension post is coaxially inserted into the top of the locking post.

[0015] The extension post is rotatably connected to the locking post on the same axis.

[0016] The extension shaft has planar abutment surfaces and arc-shaped abutment surfaces on its circumference. Therefore, on the one hand, the extension rod increases the contact range for irregularly shaped parts of different sizes, thereby improving the fixing effect of the retaining connection; on the other hand, the different abutment surfaces on its circumference increase the contact range between the extension rod and the irregularly shaped parts, thereby improving the retention stability.

[0017] In some embodiments, a pressure arm is rotatably connected above the frame, and a threaded post is threadedly connected to the pressure arm to abut against the top of the irregular part. Thus, the threaded post presses down on the irregular part from the top, further improving the stability of the irregular part's fixation.

[0018] In some embodiments, the end of the threaded column is threadedly connected to a base that assists in abutting the irregularly shaped part. This provides multi-point support for both the base and the irregularly shaped part, further increasing the support range between the threaded column and the irregularly shaped part, and ensuring the stability of the irregularly shaped part during cutting, grinding, and other operations.

[0019] In some embodiments, the base includes

[0020] A cone, the bottom surface of which is threadedly connected to the threaded column, and a plurality of sliding grooves are spaced apart around the center direction on its periphery. The center line of the sliding groove is obliquely set with the bottom surface of the cone. A second air hole communicating with the external environment is opened at the bottom of the sliding groove, and a second air valve is connected to the second air hole.

[0021] Insert pins are inserted into each groove and are sealed and slidably connected to each groove;

[0022] The second spring, located within the groove, has its two ends abutting against the bottom surface of the insert and the bottom surface of the groove, respectively. Thus, the obliquely positioned insert, through its sliding motion, can adjust the support range of the base and the irregularly shaped component, thereby ensuring the stability of the support and positioning of the irregularly shaped component. Furthermore, the sliding of the insert, in conjunction with the sliding of the support and positioning post, can further level or provide multi-angle rotational support for the irregularly shaped component, ensuring the support point while also improving the stability of the component's adjustment and fixation.

[0023] It should be understood that the description in the Summary of the Invention is not intended to limit the key or essential features of the embodiments of this disclosure, nor is it intended to restrict the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description

[0024] Figure 1 This diagram shows an overall structural schematic of a workpiece clamping device for grinding and cutting irregularly shaped parts according to an embodiment of the present invention.

[0025] Figure 2 This diagram illustrates the overall structure of the base in a workpiece clamping device for grinding and cutting irregularly shaped parts according to an embodiment of the present invention.

[0026] Figure 3 An exploded view of the base structure of a workpiece clamping device for grinding and cutting irregularly shaped parts according to an embodiment of the present invention is shown.

[0027] Figure 4 This diagram illustrates the bottom structure of the base in a workpiece clamping device for grinding and cutting irregularly shaped parts according to an embodiment of the present invention.

[0028] Figure 5 An exploded view of the support and positioning device in a workpiece clamping device for grinding and cutting irregular parts according to an embodiment of the present invention is shown.

[0029] Figure 6 An exploded structural diagram of the base in a workpiece clamping device for grinding and cutting irregularly shaped parts according to an embodiment of the present invention is shown.

[0030] Symbol Explanation

[0031] 1. Frame; 11. Lower pressure arm; 12. Telescopic component; 13. Drive component; 14. Threaded column; 2. Base; 21. Limiting groove; 22. Mating groove; 3. Support and locking device; 31. Column; 32. Auxiliary platform; 321. Groove; 33. Support and limiting column; 34. First air pipe; 35. First air valve; 36. First spring; 37. Locking column; 38. Extension column; 381. Flat contact surface; 382. Arc-shaped contact surface; 4. Adjusting column; 41. Slide rail; 42. First drive assembly; 421. First screw; 422. First rotating part; 43. Limiting strip; 5. Second drive assembly; 51. Second screw; 52. Second rotating part; 6. Base; 61. Cone; 611. Slide rail; 62. Second air pipe; 63. Second air valve; 64. Insert column; 65. Second spring. Detailed Implementation

[0032] The preferred embodiments (or implementation methods) of the present invention will now be described in detail with reference to the accompanying drawings.

[0033] The following is for reference. Figures 1-6 This invention describes a workpiece clamping device for grinding and cutting irregularly shaped parts.

[0034] Figure 1 A schematic diagram of the overall structure of a workpiece clamping device for grinding and cutting irregularly shaped parts according to an embodiment of the present invention is shown. (Reference) Figure 1As shown, this embodiment provides a workpiece clamping device for grinding and cutting irregularly shaped parts. It is attached to one side of a large grinding and cutting machine and includes a frame 1. One side of the frame 1 is connected to the drive unit of the grinding and cutting machine, allowing the frame 1 to be moved to meet the grinding and cutting needs of irregularly shaped parts. A vertically arranged telescopic member 12 extends from one side of the frame 1. The telescopic member 12 can be a hydraulic cylinder or an electric push rod. A base 2 is provided at its telescopic end, and the irregularly shaped part is fixed above the base 2. A lower pressure arm 11 is hinged to the top of the frame 1. A drive member 13 is also rotatably connected to the frame 1. The drive member 13 can be a hydraulic cylinder, and its telescopic end is hinged to one side of the lower pressure arm 11, thereby driving the lower pressure arm 11 to rotate. A threaded post 14 is threadedly connected to the end of the lower pressure arm 11. The drive component 13 makes the threaded post 14 vertical. By turning the threaded post 14, the lower end of the threaded post 14 abuts against the top of the irregular part, further fixing the irregular part in place.

[0035] Figure 2 A schematic diagram of the overall structure of the base 2 in a workpiece clamping device for grinding and cutting irregularly shaped parts according to an embodiment of the present invention is shown. (See reference) Figure 2 As shown, the base 2 can be circular or square, mainly used to support irregularly shaped parts. In this embodiment, the base 2 is circular. The end of the telescopic member 12 is fixed at the center of the lower surface of the base 2 to ensure stable support for the base 2. Multiple support and positioning devices 3 are distributed around the center of the base 2 to support and position irregularly shaped parts. In this embodiment, five support and positioning devices 3 are used as an example. The support and positioning devices 3 can not only provide a support area for the irregularly shaped parts, but also limit the peripheral movement of the irregularly shaped parts, thereby achieving stable support for the irregularly shaped parts through multiple support and positioning devices 3.

[0036] Figure 3 An exploded view of the base 2 in a workpiece clamping device for grinding and cutting irregularly shaped parts according to an embodiment of the present invention is shown. (Reference) Figure 3 As shown, the upper surface of the base 2 is evenly provided with multiple limiting grooves 21 around the center of the base 2. In this embodiment, five limiting grooves 21 are used as an example, and the limiting grooves 21 are cylindrical. An adjusting post 4 that cooperates with the limiting groove 21 is inserted into each limiting groove 21, so that the adjusting post 4 can rotate freely around its center within the limiting groove 21. A slide rail 41 is provided on the upper surface of the adjusting post 4 along its diameter direction, and a first driving component 42 is provided in the slide rail 41.

[0037] The first drive assembly 42 includes a first screw 421 disposed within the slide rail 41 along its length. Both ends of the first screw 421 are rotatably connected to the inner wall of the slide rail 41, enabling the first screw 421 to rotatably connect to the adjusting post 4 around its central axis. A first rotating part 422 is also coaxially fixed to the first screw 421. The first rotating part 422 protrudes from the surface of the adjusting post 4, thereby driving the first screw 421 to rotate around its central axis through the rotation of the first rotating part 422.

[0038] Figure 4 This diagram illustrates the bottom structure of the base 2 in a workpiece clamping device for grinding and cutting irregularly shaped parts according to an embodiment of the present invention. (Refer to...) Figure 3 and Figure 4 As shown, the bottom surface of the adjusting column 4 is provided with at least one strip-shaped limiting strip 43, and the bottom surface of the limiting groove 21 is provided with multiple mating grooves 22 that can accommodate the insertion of the limiting strip 43. This allows the adjusting column 4 to adjust the sliding angle of the slide 41 by rotating, while the mutual insertion of the limiting strip 43 and the mating groove 22 restricts the free rotation of the adjusting column 4 in the limiting groove 21. This allows for a wider adjustment of the sliding position of the slide 41 based on the shape of the irregular part, so as to meet the support and positioning requirements of the support and positioning device 3 for the irregular part.

[0039] Figure 5 An exploded view of the support and positioning device 3 in a workpiece clamping device for grinding and cutting irregularly shaped parts according to an embodiment of the present invention is shown. (See reference) Figure 5 As shown, the support and positioning device 3 includes a column 31 inserted into the slide rail 41, and the first screw 421 passes through the column 31 and is threadedly connected to the column 31. An auxiliary platform 32 is provided on the top of the column 31. The auxiliary platform 32 is strip-shaped, and its bottom middle area is connected to the column 31 and rotates around the central axis of the column 31. A groove 321 is formed at one end of the upper surface of the auxiliary platform 32 along its height direction. A support and limiting post 33 is inserted into the groove 321. The periphery of the support and limiting post 33 is slidably connected to the inner wall of the groove 321, allowing the support and limiting post 33 to slide along the height direction of the groove 321 and the auxiliary platform 32. A first air hole communicating with the external environment is formed at the bottom of the groove 321. A first air pipe 34 can be connected to the other end of the first air hole. A first air valve 35 is connected to the air pipe. The first air valve 35 can be a solenoid valve or a mechanical air valve. After the first air valve 35 is closed, the air pressure in the groove 321 is stabilized, so that the support and limiting post 33 stays in the sliding position. A first spring 36 is also provided in the groove 321. The two ends of the first spring 36 abut against the bottom wall of the groove 321 and the bottom of the support and limiting post 33, respectively, so that the support and limiting post 33 is initially located at the top of the groove 321.

[0040] A locking post 37 is vertically installed at the other end of the upper surface of the auxiliary platform 32. The locking post 37 is slidably connected to the auxiliary platform 32 along its length. A second drive assembly 5 is installed inside the auxiliary platform 32 to drive the locking post 37 to slide back and forth along its length. The second drive assembly 5 includes a second screw 51 installed inside the auxiliary platform 32 along its length. Both ends of the second screw 51 are rotatably connected to the auxiliary platform 32 around the central axis of the second screw 51. The second screw 51 passes through the locking post 37 and is threadedly connected to the locking post 37. One end of the second screw 51 extends out of the auxiliary platform 32 and is coaxially fixed to a second rotating part 52. The second rotating part 52 drives the second screw 51 to rotate, and the threaded connection between the second screw 51 and the locking post 37 drives the locking post 37 to slide back and forth along its length.

[0041] When the support and positioning device 3 is working, the rotation of the column 31 and the auxiliary platform 32 causes the support limiting column 33 to move to the bottom area of ​​the irregular part. The operator can press down on the irregular part to drive the first spring 36 to deform elastically. At this time, the irregular part can be leveled or its angle adjusted. After the position of the irregular part is determined, the sliding position of the support limiting column 33 is positioned by closing the first air valve 35. Finally, the rotation of the second rotating part 52 drives the positioning column 37 to abut against the side of the irregular part. Under the limiting action of multiple positioning columns 37, the support and positioning of the irregular part are achieved.

[0042] In some embodiments, an extension post 38 is also inserted into the top of the locking post 37. The extension post 38 can be rotatably connected to the locking post 37 around its own central axis. The extension post 38 can be replaced with an extension post 38 of suitable length according to the size and height of the irregular part, so that when the locking post 37 slides toward the irregular part, the extension post can stably abut against the periphery of the irregular part.

[0043] Furthermore, the extension post 38 is also provided with a flat contact surface 381 and an arc-shaped contact surface 382 on its periphery. The extension post 38 can adjust itself to the optimal contact surface to increase the contact area between the extension post 38 and the irregular part, thereby further ensuring the stability of the locking post 37 in limiting the irregular part.

[0044] Furthermore, for irregularly shaped parts of different shapes, the extra adjustment posts 4 can be removed to improve the adaptability to different irregularly shaped parts.

[0045] Figure 6 An exploded structural diagram of the base 6 in a workpiece clamping device for grinding and cutting irregularly shaped parts according to an embodiment of the present invention is shown. (See reference) Figure 6As shown, in some embodiments, the lower end of the threaded post 14 is also connected to a base 6 for abutting against the irregularly shaped part. The base 6 includes a cone 61, the bottom surface of which is provided with a threaded hole and threadedly connected to the lower end of the threaded post 14. At least three sliding grooves 611 are spaced apart on the periphery of the base 6. The center line of the sliding grooves 611 is obliquely arranged with the bottom surface of the cone. Each sliding groove 611 has a second air hole on its bottom wall. The second air holes are connected to a second air pipe 62. The end of the second air pipe 62 is connected to a second air valve 63. The second air valve 63 can be a solenoid valve or a mechanical air valve. A plug 64 is slidably connected in each sliding groove 611 along its depth direction. The plug 64 is slidably and sealed to the inner wall of the sliding groove 611. A second spring 65 is also provided in each sliding groove 611. The two ends of the second spring 65 abut against the bottom wall of the sliding groove 611 and the bottom wall of the plug 64, respectively.

[0046] In some embodiments, the base 6 can be replaced with a column of different lengths according to the volume of the workpiece being processed, so that the vertical displacement of the base 6 can be adjusted through the threaded connection between the base and the threaded column 14, so that the base 6 can be stably pressurized in the top region of the workpiece being processed.

[0047] Working process: First, the number of support positioning devices 3 needs to be determined according to the shape of the irregular part. After determination, the adjustment column 4 can be removed to remove the excess support positioning devices 3. Then, the adjustment column 4 is rotated to adjust the orientation of the slide 41 so that the support adjustment device moves to the side area of ​​the irregular part. The support limiting column 33 is adjusted to stabilize the support area. Then, the threaded column 14 is rotated to drive each insert 64 to stably abut against the top area of ​​the irregular part. The threaded column 14 is rotated to drive the first spring 36 and the second spring 65 to compress elastically. At this time, the rotation of the irregular part can be adjusted or leveling operations can be performed. After the cutting or grinding position of the irregular part is determined, the first air valve 35 and the second air valve 63 are closed so that the support limiting column 33 and the insert 64 stop sliding. Finally, the rotation of the second rotating part 52 drives the positioning column 37 to move to the position of the irregular part, so that the extension column 38 is engaged with the periphery of the irregular part, completing the fixing operation of the irregular part.

[0048] To improve the stability of the workpiece during processing, after the workpiece is positioned, a pressurizing device can be used to pressurize the first air pipe 34 and the second air pipe 62. Then, the first air valve 25 and the second air valve 63 are closed. Since the force of the high-pressure gas acts on the workpiece from below and above, the displacement of the support limit post 33 and the insertion post 64 is limited under the action of air pressure, thus ensuring the stability of the grinding and cutting process.

[0049] In some embodiments, the base end can be used to abut against the workpiece, and then pressurization is applied to the inside of the second air pipe 62 by a pressurizing device. After the end of the insertion post 64 is stably abutting against the workpiece, the second air valve 63 is closed. This increases the contact area between the base 61 and the workpiece and improves the stability of the workpiece support.

[0050] In the description of this specification, the terms "connection," "installation," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0051] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A workpiece clamping device for grinding and cutting irregularly shaped parts, characterized in that, include: Rack (1), The base (2) extends to one side of the frame (1), and its upper surface is provided with multiple slides (41); Telescopic component (12) is located at the bottom of base (2) and is connected to base (2) and frame (1) respectively, and is used to drive base (2) to rise and fall vertically; A support and positioning device (3) is disposed within the slide rail (41) and slidably connected to the base (2), comprising: The column (31) is inserted into the slide rail (41) and is slidably connected to the slide rail (41); The auxiliary platform (32) is connected to the upper end of the column (31). It is strip-shaped, and a groove (321) is provided at one end of its upper surface. A first air hole communicating with the outside is provided at the bottom of the groove (321), and a first air valve (35) is connected to the outside of the first air hole. The support limiting post (33) is sealed and inserted into the groove (321), and slides and connects with the auxiliary platform (32) along the height direction of the groove (321); The first spring (36) is located in the groove (321), and its two ends abut against the bottom wall of the groove (321) and the bottom wall of the support limiting post (33), respectively. The positioning post (37) is located at the other end of the upper surface of the auxiliary platform (32) and is slidably connected to the auxiliary platform (32) along the length direction of the auxiliary platform (32); The second drive component (5) is located inside the auxiliary platform (32) and drives the locking post (37) to move towards the reset along the length of the auxiliary platform (32); The upper surface of the base (2) is provided with multiple limiting grooves (21) in a circular direction around the center. The limiting grooves (21) are cylindrical. Each limiting groove (21) is inserted with an adjusting column (4) that cooperates with the limiting groove (21). The slide (41) is opened on the upper surface of the adjusting column (4). The bottom surface of the adjusting column (4) is provided with a limiting strip (43), and the bottom surface of the limiting groove (21) is provided with a plurality of mating grooves (22) for accommodating the limiting strip (43) to rotate at multiple angles and for accommodating the limiting strip (43).

2. The workpiece clamping device for grinding and cutting irregularly shaped parts according to claim 1, characterized in that, The second drive component (5) includes The second screw (51) passes through the inside of the auxiliary platform (32) along the length direction of the auxiliary platform (32), and rotates around its own central axis to connect with the auxiliary platform (32), and passes through the locking post (37) and is threadedly connected to the locking post (37); The second rotating part (52) is coaxially fixed to the periphery of the second screw (51).

3. The workpiece clamping device for grinding and cutting irregularly shaped parts according to claim 1, characterized in that, The adjustment column (4) is provided with a first driving component (42), the first driving component (42) including The first screw (421) passes through the slide (41) along the length of the slide (41) and is rotatably connected to the adjusting column (4) along its own central axis. It passes through the column (31) and is threadedly connected to the column (31). The first rotating part (422) is coaxially fixed to the periphery of the first screw (421).

4. The workpiece clamping device for grinding and cutting irregularly shaped parts according to claim 1, characterized in that, An extension post (38) is coaxially inserted into the top of the positioning post (37). The extension post (38) and the locking post (37) are coaxially rotatably connected. The extension column (38) is provided with a planar abutment surface (381) and an arc-shaped abutment surface (382) on its periphery.

5. The workpiece clamping device for grinding and cutting irregularly shaped parts according to claim 1, characterized in that, A lower pressure arm (11) is rotatably connected above the frame (1), and a threaded post (14) for abutting against the top of the irregular part is threadedly connected to the lower pressure arm (11).

6. A workpiece clamping device for grinding and cutting irregularly shaped parts according to claim 5, characterized in that, The end of the threaded column (14) is threadedly connected to a base (6) that assists in abutting the irregular part.

7. A workpiece clamping device for grinding and cutting irregularly shaped parts according to claim 6, characterized in that, The base (6) includes A cone, the bottom surface of which is threaded to the threaded column (14), and a plurality of sliding grooves (611) are spaced apart around the center direction on its periphery. The center line of the sliding groove (611) is obliquely arranged with the bottom surface of the cone. A second air hole communicating with the external environment is opened at the bottom of the sliding groove (611), and a second air valve (63) is connected to the second air hole. Insert post (64) is inserted into each slide groove (611) and is sealed and slidably connected to each slide groove (611); The second spring (65) is located in the groove (611), with its two ends abutting against the bottom surface of the insert (64) and the bottom surface of the groove (611), respectively.

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