Clamp for vertical machining center

Abstract

The invention discloses a clamp for a vertical machining center, and relates to the technical field of machining center clamps. A driving mechanism is arranged in the device body, the right end of the driving mechanism is connected with a first threaded shaft, two sets of first threaded sleeves are arranged on the outer side of the first threaded shaft, a clamping mechanism is arranged at the front ends of the first threaded sleeves and comprises an air cylinder, the driving end of the air cylinder is connected with a mounting plate, and a connecting damper is mounted on the outer side of the mounting plate. Clamping plates are mounted on the outer sides of the connecting dampers; a limiting groove is formed in the bottom of the mounting plate, the bottom of the limiting groove is slidably connected with the interior of the device body, and a supporting frame is connected to the top of the limiting groove. A driving mechanism drives a first threaded shaft to rotate, a first threaded sleeve drives two sets of first threaded sleeves to move in the opposite direction, two sets of clamping mechanisms move in the opposite direction, the clamping mechanisms clamp the two sides of a workpiece, meanwhile, when a mounting plate drives clamping plates to move in the opposite direction, limiting grooves can also move in the opposite direction, and therefore the workpiece can be clamped. Therefore, the supporting frame arranged at the top of the limiting groove moves to the bottom of the workpiece to support the workpiece.

Description

Technical Field

[0001] The invention relates to the technical field of machining center fixtures, in particular to a fixture for a vertical machining center. Background Art

[0002] The fixture for a vertical machining center is a device used to fix the workpiece on the vertical machining center to ensure its stable position and precise positioning during cutting, drilling, milling and other processing processes. It directly affects the processing accuracy, efficiency and safety. It is suitable for small and medium-sized batches and a variety of workpieces. It does not require customization and has strong versatility. The fixture structure must avoid the tool processing path and avoid interference with the tool and spindle to ensure the maximum processing range. When used in a vertical machining center, it is often used in a closed environment so that the debris remains inside the equipment and does not splash. However, the existing fixtures for vertical machining centers have some shortcomings, such as: Application number: CN202222588536.2, a fixture for a vertical CNC machining center. The device can collect machining debris through a collection bin at the bottom, making it easy to clean. However, in actual use, the device has difficulty supporting and clamping the bottom of the workpiece. This may cause the fixture to fall or deviate after clamping both sides of the workpiece due to the lack of support at the bottom. Therefore, we proposed a fixture for vertical machining center to solve the above problems. Summary of the Invention

[0003] The purpose of the present invention is to provide a clamp for a vertical machining center to solve the problem raised in the above background technology that the clamp for a vertical CNC machining center currently on the market may cause the clamp to fall or deviate easily after clamping and fixing the two sides of the workpiece due to the lack of support at the bottom.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solution: a fixture for a vertical machining center, comprising a device body and a closing door provided at the front end of the device body; A driving mechanism is provided inside the device body, and a first threaded shaft is connected to the right end of the driving mechanism, and two sets of first threaded sleeves are provided on the outside of the first threaded shaft. A clamping mechanism is provided at the front end of the first threaded sleeve, and the clamping mechanism includes a cylinder, a mounting plate is connected to the driving end of the cylinder, and a connecting damper is installed on the outside of the mounting plate, and a clamping plate is installed on the outside of the connecting damper; A limiting groove is provided at the bottom of the mounting plate, and the bottom of the limiting groove is slidably connected to the inside of the device body, and the top of the limiting groove is connected to a support frame; A second threaded shaft is provided inside the device body, and two groups of second threaded sleeves are provided on the outside of the second threaded shaft. The top of the second threaded sleeve is connected to a positioning mechanism, and the positioning mechanism includes an extension frame, and the bottom of the extension frame is connected to a positioning plate, and a buffer damper is provided at the bottom of the positioning plate, and the bottom of the buffer damper is connected to a positioning frame.

[0005] By driving the first threaded shaft to rotate through the driving mechanism, the first threaded sleeve can drive the two groups of first threaded sleeves to move toward each other, thereby causing the two groups of clamping mechanisms to move toward each other, so that the clamping mechanisms clamp both sides of the workpiece. At the same time, when the mounting plate drives the clamping plates to move toward each other, the limit grooves will also move toward each other, so that the support frame set on the top of the limit groove moves to the bottom of the workpiece to support it, which can make the device more stable when clamping.

[0006] As a preferred technical solution of the present invention, the interior of the device body is fixedly connected to the drive mechanism, and the drive mechanism includes a drive motor, and the right end of the drive motor is connected to a first sprocket, a chain is engaged on the outside of the first sprocket, and a second sprocket is engaged on the other end of the chain.

[0007] The adoption of the above technical solution can make the driving mechanism more stable when driving the two sets of clamping mechanisms or protective plates to move, thereby increasing the stability of the equipment during operation.

[0008] As a preferred technical solution of the present invention, the right end of the first sprocket is fixedly connected to the first threaded shaft, and the thread grooves on the left and right sides of the first threaded shaft are in opposite directions.

[0009] The above technical solution enables the first threaded shaft to drive the two groups of first threaded sleeves to move toward each other during operation, thereby increasing the stability of the device during operation.

[0010] As a preferred technical solution of the present invention, the right end of the first threaded shaft is rotatably connected to the device body, and a fixed plate is provided at the front end of the first threaded sleeve, and the fixed plate is fixedly connected to the cylinder, the inner side of the fixed plate is slidably connected to the limiting shaft, and the other end of the limiting shaft is fixedly connected to the mounting plate, and the front end of the first threaded sleeve is fixedly connected to the fixed plate through a fixing frame.

[0011] The above technical solution enables the cylinder to support the four sides of the mounting plate through the limiting shaft when driving the mounting plate to move, so that the mounting plate can be more stable when moving, and through the setting of the fixing frame, the first threaded sleeve can be more stable when connected to the fixing plate, thereby increasing the firmness of the equipment during operation.

[0012] As a preferred technical solution of the present invention, the mounting plate is fixedly connected to the connection damper, and the two sets of clamping plates are in a horizontally facing state, and rubber pads are provided on the inner sides of the clamping plates.

[0013] This technical solution not only increases friction to prevent slipping when the clamping plate is clamping the workpiece, but also cushions the impact of the clamping moment, preventing indentations or scratches on the workpiece surface. The joint damping further absorbs machining vibrations, reducing the resonance effects of the clamping plate.

[0014] As a preferred technical solution of the present invention, the right end of the second sprocket is fixedly connected to the second threaded shaft, and the outer side of the second threaded shaft is threadedly connected to the two groups of second threaded sleeves, and the thread grooves inside the two groups of second threaded sleeves are facing opposite directions, the front end of the second threaded sleeve is connected to a protective plate, and the top of the second threaded sleeve is fixedly connected to a group of extension frames.

[0015] The above technical solution enables the protective plate to move along with the clamping mechanism when it moves, so that when the workpiece is being processed, the protective plate can intercept flying debris to prevent the debris from flying into the first threaded shaft and the second threaded shaft and causing damage. The protective plate can also protect the rear of the workpiece, thereby increasing the protectiveness of the equipment when in use.

[0016] As a preferred technical solution of the present invention, the protective plate is located at the rear end of the clamping plate, and the bottom of the protective plate is slidably connected to the inside of the device body, and the bottom of the device body is connected to a base, the top of the device body is provided with a slide groove, and the top of the extension frame is provided with a slider, and the top of the extension frame is slidably connected to the slide groove through the slider.

[0017] The adoption of the above technical solution can make the device more stable during operation, thereby increasing the stability of the device during operation. By providing a slider on the top of the extension frame, the slider on the top can slide inside the slide groove when the extension frame moves, thereby avoiding the problem of tilting of the extension frame.

[0018] As a preferred technical solution of the present invention, a rotating shaft is connected to the outer side of the mounting plate, and the other end of the rotating shaft is connected to a clamping seat, and a limiting plate is provided on the outer side of the clamping seat, a clamping piece is provided on the inner side of the limiting plate, and the limiting plate is fixedly connected to the clamping piece through a damper.

[0019] The adoption of the above technical solution can make the device more convenient when clamping different types of workpieces, thereby making the device more stable when clamping the workpiece, increasing the stability of the device when clamping, and applying pressure to the clamping member through the damper, so that the clamping seat can be more stable when clamping and fixing the left and right sides of the workpiece, thereby increasing the firmness of the device when clamping the workpiece.

[0020] As a preferred technical solution of the present invention, a waste tank is provided inside the device body, and an air pump is provided at the bottom of the positioning plate, and the rear end of the air pump is connected to the exhaust port at the top of the device body through a telescopic hose, and the air pump can spray gas out through the exhaust port at the bottom.

[0021] The above technical solution enables the workpiece inside the device body to be processed and the debris to be blown into the waste trough by the air pump, thereby making the device more convenient when collecting debris, avoiding the problem of debris splashing, and increasing the protectiveness of the device during use.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: by driving the first threaded shaft to rotate through the driving mechanism, the first threaded sleeve can drive the two groups of first threaded sleeves to move toward each other, thereby causing the two groups of clamping mechanisms to move toward each other, so that the clamping mechanisms clamp both sides of the workpiece, and at the same time, when the mounting plate drives the clamping plates to move toward each other, the limiting grooves will also move toward each other, so that the support frame provided on the top of the limiting grooves moves to the bottom of the workpiece to support it, which can make the device more stable when clamping; Furthermore, by providing a rubber pad on the inner side of the clamping plate, the clamping plate can be fitted with the workpiece through the rubber pad when clamping the workpiece, thereby avoiding the problem of the clamping plate causing damage to the surface of the workpiece, thereby increasing the protection of the equipment during operation; Furthermore, by setting up the protective plate, the protective plate can move along with the clamping mechanism when it moves, so that when the workpiece is being processed, the protective plate can intercept flying debris to prevent the debris from flying into the first threaded shaft and the second threaded shaft and causing damage. The protective plate can also protect the rear of the workpiece, thereby increasing the protectiveness of the equipment when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the front elevation structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the front cross section of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the rear cross-section of the present invention; Figure 4 Schematic diagram of the three-dimensional structure of the driving mechanism of the present invention; Figure 5 Schematic diagram of the three-dimensional structure of the first threaded shaft of the present invention; Figure 6 is a schematic diagram of the three-dimensional structure of the clamping mechanism of the present invention; Figure 7 Schematic diagram of the three-dimensional structure of the second threaded shaft of the present invention; Figure 8Schematic diagram of the three-dimensional structure of the positioning mechanism of the present invention; Figure 9 It is a schematic diagram of the three-dimensional structure of the slideway and the positioning mechanism of the present invention; Figure 10 Schematic diagram of the three-dimensional structure of the clamping mechanism of Example 2 of the present invention; Figure 11 Schematic diagram of the three-dimensional structure of the front cross section of Example 3 of the present invention; Figure 12 It is a schematic diagram of the three-dimensional structure of the positioning mechanism of Example 3 of the present invention.

[0024] In the figure: 1. Device body; 2. Driving motor; 3. First sprocket; 4. Chain; 5. Second sprocket; 6. First threaded shaft; 7. First threaded sleeve; 8. Fixed plate; 9. Cylinder; 10. Mounting plate; 11. Limiting shaft; 12. Connecting damper; 13. Clamping plate; 14. Limiting groove; 15. Support frame; 16. Second threaded shaft; 17. Second threaded sleeve; 18. Protective plate; 19. Fixed frame; 20. Extension frame; 21. Mounting frame; 22. Positioning plate; 23. Buffer damper; 24. Positioning frame; 25. Slider; 26. Slide groove; 27. Base; 28. Closing door; 29. ​​Rotating shaft; 30. Clamping seat; 31. Limiting plate; 32. Clamping sheet; 33. Waste trough; 34. Air pump. DETAILED DESCRIPTION

[0025] The technical solutions 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 only part of the embodiments of the present invention, rather than all the embodiments.

[0026] Example 1: In order to solve the problem that the fixture used in the existing vertical CNC machining center may cause the fixture to fall or deviate easily after clamping the two sides of the workpiece due to the lack of support at the bottom, the following solution is disclosed. Please refer to Figures 1-9 , the present invention provides a technical solution: a fixture for a vertical machining center, comprising a device body 1 and a closing door 28 provided at the front end of the device body 1; The device body 1 is provided with a driving mechanism inside, and the right end of the driving mechanism is connected to a first threaded shaft 6, and two sets of first threaded sleeves 7 are provided on the outside of the first threaded shaft 6. The front end of the first threaded sleeve 7 is provided with a clamping mechanism, and the clamping mechanism includes a cylinder 9. The driving end of the cylinder 9 is connected to a mounting plate 10, and a connecting damper 12 is installed on the outside of the mounting plate 10, and a clamping plate 13 is installed on the outside of the connecting damper 12; A limiting groove 14 is provided at the bottom of the mounting plate 10, and the bottom of the limiting groove 14 is slidably connected to the inside of the device body 1, and a support frame 15 is connected to the top of the limiting groove 14; A second threaded shaft 16 is provided inside the device body 1, and two sets of second threaded sleeves 17 are provided on the outside of the second threaded shaft 16. A positioning mechanism is connected to the top of the second threaded sleeve 17, and the positioning mechanism includes an extension frame 20, and a positioning plate 22 is connected to the bottom of the extension frame 20. A buffer damper 23 is provided at the bottom of the positioning plate 22, and a positioning frame 24 is connected to the bottom of the buffer damper 23; By driving the first threaded shaft 6 to rotate, the first threaded shaft 6 can drive the left and right groups of first threaded sleeves 7 to move toward each other, and the two groups of first threaded sleeves 7 will drive the two groups of clamping mechanisms to move toward each other, so that the fixing plate 8 drives the cylinder 9 and the mounting plate 10 to move, so that the mounting plate 10 drives the connecting damper 12 and the clamping plate 13 to move, so that the clamping plate 13 clamps and fixes the left and right sides of the workpiece. At the same time, when the mounting plate 10 moves, it will also drive the limiting groove 14 to slide inside the device body 1, so that the limiting groove 14 drives the support frame 15 to support the bottom of the workpiece. At the same time, the driving mechanism The second threaded shaft 16 will also be driven to rotate, so that the second threaded shaft 16 drives the two sets of second threaded sleeves 17 to move toward each other, so that the second threaded sleeves 17 drive the extension frame 20 to move, so that the extension frame 20 drives the mounting frame 21 and the positioning plate 22 to move, so that the positioning plate 22 drives the positioning frame 24 to move to the top of the workpiece for positioning. At the same time, the buffer damper 23 will also apply pressure to the positioning frame 24, so that the positioning frame 24 can be more stable when positioning and fixing the top of the workpiece, and can enable the positioning frame 24 to cooperate with the limiting groove 14 to clamp the upper and lower sides of the workpiece; The device body 1 is fixedly connected to the drive mechanism, and the drive mechanism includes a drive motor 2, and the right end of the drive motor 2 is connected to a first sprocket 3, the outer side of the first sprocket 3 is meshed with a chain 4, and the other end of the chain 4 is meshed with a second sprocket 5; The right end of the first sprocket 3 is fixedly connected to the first threaded shaft 6, and the thread grooves on the left and right sides of the first threaded shaft 6 are in opposite directions. The right end of the first threaded shaft 6 is rotatably connected to the device body 1, and a fixing plate 8 is provided at the front end of the first threaded sleeve 7, and the fixing plate 8 is fixedly connected to the cylinder 9. The inner side of the fixing plate 8 is slidably connected to the limit shaft 11, and the other end of the limit shaft 11 is fixedly connected to the mounting plate 10, and the front end of the first threaded sleeve 7 is fixedly connected to the fixing plate 8 through a fixing bracket 19; The mounting plate 10 is fixedly connected to the connection damper 12, and the two sets of clamping plates 13 are in a horizontally facing state, and a rubber pad is provided on the inner side of the clamping plate 13. The right end of the second sprocket 5 is fixedly connected to the second threaded shaft 16, and the outer side of the second threaded shaft 16 is threadedly connected to the two sets of second threaded sleeves 17, and the thread grooves inside the two sets of second threaded sleeves 17 face opposite directions. The front end of the second threaded sleeve 17 is connected to a protective plate 18, and the top of the second threaded sleeve 17 is fixedly connected to a set of extension frames 20. When the driving mechanism is running, the driving motor 2 will drive the first sprocket 3 to rotate, thereby causing the first sprocket 3 to drive the first threaded shaft 6 to rotate, and the first sprocket 3 will also drive the second sprocket 5 to rotate through the chain 4, so that the second sprocket 5 drives the two sets of second threaded sleeves 17 to move toward each other, so that the second threaded sleeves 17 drive the protective plate 18 to move, so that the debris generated during the processing of the workpiece is blocked, preventing the debris from splashing onto the first threaded shaft 6 and the second threaded shaft 16 and causing damage; The protective plate 18 is located at the rear end of the clamping plate 13, and the bottom of the protective plate 18 is slidably connected to the inside of the device body 1. The bottom of the device body 1 is connected to a foot 27. The top of the device body 1 is provided with a slide groove 26, and the top of the extension frame 20 is provided with a slider 25. The top of the extension frame 20 is slidably connected to the slide groove 26 via the slider 25. When the protective plate 18 moves, it can slide with the device body 1 through the bottom, and when the extension frame 20 moves, the slider 25 on the top will be slidably connected with the slide groove 26, thereby supporting the top of the extension frame 20, thereby avoiding the problem of tilting caused by excessive weight on the top of the extension frame 20.

[0027] Example 2: In this example, another clamping method is disclosed, which is different from the example 1. Figure 10 As shown, the difference between this embodiment and embodiment 1 is that: a rotating shaft 29 is connected to the outside of the mounting plate 10, and the other end of the rotating shaft 29 is connected to a clamping seat 30, and a limiting plate 31 is provided on the outside of the clamping seat 30, and a clamping piece 32 is provided on the inside of the limiting plate 31, and the limiting plate 31 is fixedly connected to the clamping piece 32 through a damper; When clamping a cylindrical or other shaped workpiece, the clamping seat 30 can be connected to the mounting plate 10 through the rotating shaft 29, and a motor can be installed inside the rotating shaft 29, so that the rotating shaft 29 can drive the clamping seat 30 to rotate, and by arranging a limit plate 31 and a clamping piece 32 on the outside of the clamping seat 30, the clamping seat 30 can be more stable when clamping the workpiece, thereby increasing the firmness of the device when clamping the workpiece.

[0028] Example 3: This example discloses another method for preventing debris from splashing, which is different from Example 1. Figure 11-12 As shown, the difference between this embodiment and embodiment 1 is that a waste tank 33 is provided inside the device body 1, and an air pump 34 is provided at the bottom of the positioning plate 22, and the rear end of the air pump 34 is connected to the exhaust port at the top of the device body 1 through a telescopic hose, and the air pump 34 can eject gas through the exhaust port at the bottom; After the positioning frame 24 clamps the top of the workpiece, the air pump 34 can blow the wind from the exhaust port downward through the telescopic hose, so that when the workpiece is being processed, the debris generated during the processing is transferred to the waste trough 33 under the drive of the wind, and the bottom of the waste trough 33 can be connected to the waste box, so that after the debris falls into the waste trough 33, it is collected by the waste box, thereby avoiding the problem of debris splashing when the workpiece is being processed, and increasing the protection of the equipment when in use.

[0029] Working principle: When using the clamp for the vertical machining center, first connect the power supply of the equipment to the power grid, and then make the driving mechanism drive the first threaded shaft 6 to rotate, so that the first threaded shaft 6 drives the two groups of first threaded sleeves 7 to move toward each other, and the first threaded sleeves 7 will drive the two groups of clamping mechanisms to move toward each other, so that the fixed plate 8 drives the cylinder 9 and the mounting plate 10 to move, so that the mounting plate 10 drives the connecting damper 12 and the clamping plate 13 to move, and at the same time, when the clamping plate 13 is clamped and fixed with the left and right sides of the workpiece, the connecting damper 12 will also shrink, thereby applying pressure to the clamping plate 13, so that the clamping plate 13 can be more stable when clamping the workpiece, so that the clamping plate 13 clamps the left and right sides of the workpiece, and at the same time, when the mounting plate 10 moves It will also drive the limiting groove 14 at the bottom to slide inside the device body 1, so that the limiting groove 14 drives the support frame 15 to support the bottom of the workpiece, and at the same time the driving mechanism will also drive the second threaded shaft 16 to rotate, so that the second threaded shaft 16 drives the two sets of second threaded sleeves 17 to move toward each other, so that the second threaded sleeves 17 drive the extension frame 20 to move, so that the extension frame 20 drives the mounting frame 21 and the positioning plate 22 to move, so that the positioning plate 22 drives the positioning frame 24 to move to the top of the workpiece for positioning, and at the same time the buffer damper 23 will also apply pressure to the positioning frame 24, so that the positioning frame 24 can be more stable when positioning and fixing the top of the workpiece, and can enable the positioning frame 24 to cooperate with the limiting groove 14 to clamp the upper and lower sides of the workpiece; When the driving mechanism is running, the driving motor 2 will drive the first sprocket 3 to rotate, thereby causing the first sprocket 3 to drive the first threaded shaft 6 to rotate, and the first sprocket 3 will also drive the second sprocket 5 to rotate through the chain 4, so that the second sprocket 5 drives the two sets of second threaded sleeves 17 to move toward each other, thereby causing the second threaded sleeve 17 to drive the protective plate 18 to move, so that the debris generated by the workpiece during processing is blocked, preventing the debris from splashing onto the first threaded shaft 6 and the second threaded shaft 16 and causing damage.

[0030] Thereby completing a series of tasks, the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0031] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A fixture for a vertical machining center, comprising a device body (1) and a closing door (28) provided at the front end of the device body (1); Its characteristics are: The device body (1) is provided with a driving mechanism inside, and the right end of the driving mechanism is connected to a first threaded shaft (6), and two sets of first threaded sleeves (7) are provided on the outside of the first threaded shaft (6), and the front end of the first threaded sleeve (7) is provided with a clamping mechanism, and the clamping mechanism includes a cylinder (9), the driving end of the cylinder (9) is connected to a mounting plate (10), and a connecting damper (12) is installed on the outside of the mounting plate (10), and a clamping plate (13) is installed on the outside of the connecting damper (12); The bottom of the mounting plate (10) is provided with a limiting groove (14), and the bottom of the limiting groove (14) is slidably connected to the inside of the device body (1), and the top of the limiting groove (14) is connected to a support frame (15); A second threaded shaft (16) is provided inside the device body (1), and two sets of second threaded sleeves (17) are provided outside the second threaded shaft (16), the top of the second threaded sleeve (17) is connected to a positioning mechanism, and the positioning mechanism includes an extension frame (20), and the bottom of the extension frame (20) is connected to a positioning plate (22), and the bottom of the positioning plate (22) is provided with a buffer damper (23), and the bottom of the buffer damper (23) is connected to a positioning frame (24).

2. The fixture for a vertical machining center according to claim 1, characterized in that: The interior of the device body (1) is fixedly connected to a drive mechanism, and the drive mechanism includes a drive motor (2), and the right end of the drive motor (2) is connected to a first sprocket (3), the outer side of the first sprocket (3) is engaged with a chain (4), and the other end of the chain (4) is engaged with a second sprocket (5).

3. The fixture for a vertical machining center according to claim 2, characterized in that: The right end of the first sprocket (3) is fixedly connected to the first threaded shaft (6), and the thread grooves on the left and right sides of the first threaded shaft (6) face in opposite directions.

4. The fixture for a vertical machining center according to claim 3, characterized in that: The right end of the first threaded shaft (6) is rotatably connected to the device body (1), and a fixing plate (8) is provided at the front end of the first threaded sleeve (7), and the fixing plate (8) is fixedly connected to the cylinder (9), the inner side of the fixing plate (8) is slidably connected to the limiting shaft (11), and the other end of the limiting shaft (11) is fixedly connected to the mounting plate (10), and the front end of the first threaded sleeve (7) is fixedly connected to the fixing plate (8) through a fixing frame (19).

5. The fixture for a vertical machining center according to claim 4, characterized in that: The mounting plate (10) is fixedly connected to the connection damper (12), and the two groups of clamping plates (13) are in a horizontally facing state, and rubber pads are provided on the inner sides of the clamping plates (13).

6. The fixture for a vertical machining center according to claim 2, characterized in that: The right end of the second sprocket (5) is fixedly connected to the second threaded shaft (16), and the outer side of the second threaded shaft (16) is threadedly connected to two sets of second threaded sleeves (17), and the thread grooves inside the two sets of second threaded sleeves (17) face opposite directions. The front end of the second threaded sleeve (17) is connected to a protective plate (18), and the top of the second threaded sleeve (17) is fixedly connected to a set of extension frames (20).

7. The fixture for a vertical machining center according to claim 6, characterized in that: The protective plate (18) is located at the rear end of the clamping plate (13), and the bottom of the protective plate (18) is slidably connected to the inside of the device body (1), and the bottom of the device body (1) is connected to a foot (27), the top of the device body (1) is provided with a slide groove (26), and the top of the extension frame (20) is provided with a slider (25), and the top of the extension frame (20) is slidably connected to the slide groove (26) through the slider (25).

8. The fixture for a vertical machining center according to claim 4, characterized in that: The outer side of the mounting plate (10) is connected to a rotating shaft (29), and the other end of the rotating shaft (29) is connected to a clamping seat (30), and a limiting plate (31) is provided on the outer side of the clamping seat (30), and a clamping piece (32) is provided on the inner side of the limiting plate (31), and the limiting plate (31) is fixedly connected to the clamping piece (32) through a damper.

9. The fixture for a vertical machining center according to claim 7, characterized in that: A waste tank (33) is provided inside the device body (1), and an air pump (34) is provided at the bottom of the positioning plate (22). The rear end of the air pump (34) is connected to the exhaust port at the top of the device body (1) via a telescopic hose, and the air pump (34) can eject gas through the exhaust port at the bottom.

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