High-precision low-temperature cold air cutting device for automobile parts

Abstract

The utility model relates to a high-precision low-temperature cold air cutting device for automobile parts, and belongs to the technical field of automobile part machining, the high-precision low-temperature cold air cutting device comprises a fixing plate, a damping assembly is arranged on the fixing plate, a damping plate is fixed to the damping assembly, a connecting plate is fixed to the right side of the fixing plate, and a driving motor is fixed to the top of the connecting plate; a swing assembly is arranged at the top of the connecting plate, a placing table is fixed to the swing assembly, a fixing table is fixed to the top of the placing table, a clamping mechanism is arranged on the placing table, and a supporting plate and a partition plate are fixed to the top of the damping plate. According to the high-precision low-temperature cold air cutting device for the automobile parts, the use stability of the device is improved through the arrangement of the clamping mechanism, the use flexibility of the device is improved through the arrangement of the acting mechanism, cold air is supplied through a cooling box, the use effect of the device is improved, and a driving motor drives a swing assembly to operate; the using effect of the device is improved, and the using effect of the whole device is good.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts processing technology, specifically a high-precision automotive parts low-temperature cold air cutting device. Background Technology

[0002] Currently, in the automotive parts processing industry, CNC machine tools and other automated equipment are widely used to improve the surface quality and processing efficiency of parts. These devices ensure machining accuracy by precisely controlling the tool path and feed rate. However, as the market's requirements for product quality continue to increase, traditional dry cutting and oil-cooled cutting methods have gradually revealed many limitations, especially when machining difficult-to-machine materials such as cemented carbide and stainless steel. These problems have prompted the industry to actively explore new cutting technologies and methods to meet the growing quality demands and technical challenges.

[0003] For example, a Chinese patent (publication number: CN220838247U) discloses a cutting device that is easy to adjust, improves work efficiency, and enhances practicality. It includes a work box with a working cavity inside. One end of the working cavity has an inlet / outlet hole. A base plate is fixedly installed inside the working cavity. The fixing mechanism includes a slide table. A first through hole is opened on the base plate. First sliding grooves are opened on the inner walls of both sides of the first through hole. Limiting blocks are fixedly installed at both ends of the slide table, and the two limiting blocks are slidably connected to the two first sliding grooves respectively. A power cavity is provided inside the slide table. Two second through holes are opened at the top of the power cavity. Limiting rods are fixedly installed in both second through holes. Clamping plates are slidably installed on both limiting rods. A first motor is fixedly installed at the top of the power cavity. A first screw is fixedly installed at the output end of the first motor. The bottom end of the first screw is rotatably connected to the bottom end of the working cavity. A movable plate is screwed onto the first screw, and connecting rods are hinged to both ends of the movable plate.

[0004] This patent improves the flexibility of the device by adjusting the left and right displacement of the slide table and the descent of the cutting head, thereby improving the grinding effect on the workpiece. However, when processing hard workpieces, the workpiece temperature rises, which affects the workpiece quality. Therefore, a high-precision low-temperature cold air cutting device for automotive parts is proposed to solve the above-mentioned problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a high-precision low-temperature cold air cutting device for automotive parts, which has the advantage of good performance and solves the problem that the device is difficult to process high-hardness workpieces.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-precision automotive parts low-temperature cold air cutting device, comprising a fixed plate, a shock-absorbing assembly on the fixed plate, a shock-absorbing plate slidably connected to the fixed plate on the shock-absorbing assembly, a connecting plate fixed to the right side of the fixed plate, a drive motor fixed to the top of the connecting plate, a swing assembly on the top of the connecting plate, a placement platform fixed to the swing assembly, a fixed platform fixed to the top of the placement platform, a clamping mechanism movably connected to the fixed platform on the placement platform, a support plate and a partition plate fixed to the top of the shock-absorbing plate, a top plate fixed to the top of the support plate, a cooling box fixed to the right side of the support plate, a lifting mechanism rotatably connected to the top plate on the top of the shock-absorbing plate, a sliding assembly slidably connected to the partition plate on the lifting mechanism, and an actuating mechanism fixed to the sliding assembly;

[0007] The actuating mechanism includes a housing, a servo motor, a rotating shaft, a cutting head, a telescopic hose, and an exhaust pipe. The housing is fixed to a sliding assembly, the servo motor is fixed to the inner top wall of the housing, the rotating shaft is fixed to the output shaft of the servo motor, the rotating shaft is rotatably connected to the bottom wall of the housing, the rotating shaft extends to the outside of the housing, the cutting head is fixed to the bottom of the rotating shaft, the left side of the telescopic hose is fixed to a cooling box, the right side of the telescopic hose penetrates into the inside of the housing, and the bottom of the telescopic hose located in the inner cavity of the housing is connected to an exhaust pipe that penetrates to the outside of the bottom of the housing.

[0008] By adopting this technical solution, the device can be improved by damping the vibration through the setting of the vibration damping components. The setting of the swing component and the lifting component enables multi-directional cutting of the workpiece, which improves the device's performance. At the same time, the device's performance is further improved by applying cold air to the cutting area.

[0009] Furthermore, the lifting mechanism includes an operating motor, a drive gear, a driven gear, and a threaded rod. The operating motor is fixed to the top of the shock-absorbing plate, the drive gear is fixed to the output shaft of the operating motor, the driven gear meshes with the top of the drive gear, the threaded rod is fixed to the axis at the top of the driven gear, and the top of the threaded rod is rotatably connected to the top plate.

[0010] By adopting this technical solution, it is beneficial to use an electric motor to power the rotation of the threaded rod, thereby realizing the lifting and lowering of the sliding component, which improves the flexibility of the device.

[0011] Furthermore, the shock absorption assembly includes a telescopic damping rod, a rubber block, and a top support spring. The telescopic damping rod is fixed to the inner bottom wall of the fixed plate, the rubber block is fixed to the top of the telescopic damping rod, and the top support spring is fixed to the bottom of the rubber block. The top support spring is wrapped around the outside of the telescopic damping rod.

[0012] By adopting this technical solution, it is beneficial to provide shock absorption function for the device, thereby reducing the vibration generated during operation and improving the device's performance.

[0013] Furthermore, the swing assembly includes two connecting plates, a rotating frame, a fixed shaft, a drive block, and a connecting block. The top of the connecting plates is fixed to the top of the connecting plates. The rotating frame is rotatably connected between the two connecting plates. The fixed shaft is rotatably connected to the inner sidewalls of the front and rear of the rotating frame. The drive block is fixed to the outer side of the fixed shaft. The connecting block is fixed to the bottom of the drive block. The connecting block is fixed to the back of the output shaft of the drive motor.

[0014] By adopting this technical solution, it is beneficial to use a drive motor to power the swing component, thereby adjusting the angle of the placement table. This facilitates the adjustment of different cutting angles for the workpiece and improves the effectiveness of the device.

[0015] Furthermore, the clamping mechanism includes a rotating motor, a rotating rod, a slider, and a clamping plate. The rotating motor is fixed to the top of the placement platform, the rotating rod is fixed to the output shaft of the rotating motor, the rotating rod passes through the fixed platform and is rotatably connected to the inner wall of its left side, the slider is threadedly connected to the outer side of the rotating rod, the slider is slidably connected to the top of the fixed platform, and the clamping plate is fixed to the top of the slider.

[0016] By adopting this technical solution, it is beneficial to use a rotating motor to power the slider and clamping plate, thereby clamping the workpiece, which helps to achieve stability in the workpiece cutting process and improves the stability of the device.

[0017] Furthermore, two sections of threaded wire with opposite directions of rotation are fixed on the outer side of the rotating rod, and a sliding port is provided on the top of the fixed platform, through which the slider is slidably connected to the fixed platform.

[0018] By adopting this technical solution, it is beneficial to achieve the relative displacement of the slider, thereby facilitating the clamping and fixing effect of the mechanism.

[0019] Furthermore, the sliding assembly includes a sliding sleeve, a lifting plate, a locking block, and a limiting plate. The sliding sleeve is threadedly connected to the outer side of the threaded rod. The lifting plate is fixed to the right side of the sliding sleeve. The locking block is fixed to the front of the lifting plate. The limiting plate is fixed to the back of the lifting plate. The limiting plate is slidably connected to the partition. The locking block is engaged with the outer side of the telescopic hose.

[0020] By adopting this technical solution, it is beneficial to realize the vertical displacement of the entire component through the rotation of the threaded rod, and the stability of the telescopic hose is improved by the snap-fit ​​setting of the locking block, which is conducive to improving the stability of the device in use.

[0021] Furthermore, a displacement channel is provided on the inner side of the partition, and the lifting plate is slidably connected to the partition through the displacement channel. A limiting channel communicating with the displacement channel is provided on the partition, and the limiting plate is slidably connected to the partition through the limiting channel.

[0022] By adopting this technical solution, the lifting plate box limit plate can be raised and lowered stably, thereby improving the stability of the mechanism and facilitating the stable use of the overall device.

[0023] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0024] This high-precision automotive parts low-temperature cold air cutting device achieves workpiece clamping through its clamping mechanism, improving the stability of the device. The actuating mechanism drives the cutting head to rise and fall, enhancing the device's flexibility. Simultaneously, the cooling box supplies cold air to cool the cutting area, improving the device's performance. The drive motor operates the swing assembly, allowing for adjustment of the workpiece cutting angle, further enhancing the device's effectiveness. Overall, the device performs well. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the shock absorption component structure of this utility model;

[0027] Figure 3 This is a schematic diagram of the swing component structure of this utility model;

[0028] Figure 4 This is a three-dimensional structural diagram of the sliding component of this utility model.

[0029] In the diagram: 1. Fixed plate; 2. Shock-absorbing assembly; 201. Telescopic damping rod; 202. Rubber block; 203. Top support spring; 3. Shock-absorbing plate; 4. Connecting plate; 5. Drive motor; 6. Swing assembly; 601. Connecting plate; 602. Rotating frame; 603. Fixed shaft; 604. Drive block; 605. Connecting block; 7. Placement platform; 8. Rotating motor; 9. Fixed platform; 10. Rotating rod; 11. Slider; 12. 13. Clamping plate; 14. Support plate; 15. Top plate; 16. Cooling box; 17. Actuating motor; 18. Drive gear; 19. Driven gear; 20. Threaded rod; 20. Sliding assembly; 2001. Sliding sleeve; 2002. Lifting plate; 2003. Locking block; 2004. Limiting plate; 21. Partition plate; 22. Box body; 23. Servo motor; 24. Rotating shaft; 25. Cutting head; 26. Telescopic hose; 27. Air outlet pipe. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figure 1 A high-precision automotive parts low-temperature cold air cutting device in this embodiment includes a fixed plate 1, a shock-absorbing component 2 on the fixed plate 1, a shock-absorbing plate 3 slidably connected to the fixed plate 1 fixed on the shock-absorbing component 2, a connecting plate 4 fixed on the right side of the fixed plate 1, a drive motor 5 fixed on the top of the connecting plate 4, a swing component 6 on the top of the connecting plate 4, a placement platform 7 fixed on the swing component 6, a fixed platform 9 fixed on the top of the placement platform 7, and a clamping mechanism movably connected to the fixed platform 9 on the placement platform 7.

[0032] Understandably, the clamping mechanism helps to clamp and fix the workpiece, stabilizes the cutting process of the device, and improves the overall stability of the device.

[0033] The top of the shock absorber 3 is fixed with a support plate 13 and a partition plate 21. The top of the support plate 13 is fixed with a top plate 14. The right side of the support plate 13 is fixed with a cooling box 15. The top of the shock absorber 3 is provided with a lifting mechanism that is rotatably connected to the top plate 14. The lifting mechanism is provided with a sliding component 20 that is slidably connected to the partition plate 21. An action mechanism is fixed on the sliding component 20.

[0034] The lifting mechanism facilitates the upward and downward adjustment of the cutting head 25 by lifting the sliding component 20, thereby improving the overall flexibility of the device.

[0035] The lifting mechanism includes an actuating motor 16, a driving gear 17, a driven gear 18, and a threaded rod 19. The actuating motor 16 is fixed to the top of the damping plate 3, the driving gear 17 is fixed to the output shaft of the actuating motor 16, the driven gear 18 meshes with the top of the driving gear 17, and the threaded rod 19 is fixed to the axis at the top of the driven gear 18. The top of the threaded rod 19 is rotatably connected to the top plate 14.

[0036] It is also understandable that by powering the motor 16, the threaded rod 19 is rotated, and the sliding component 20 is lifted and displaced through the threaded connection, which is beneficial to improving the overall flexibility of the device and enhancing its performance.

[0037] The operating mechanism includes a housing 22, a servo motor 23, a rotating shaft 24, a cutting head 25, a telescopic hose 26, and an exhaust pipe 27. The housing 22 is fixed to the sliding assembly 20. The servo motor 23 is fixed to the inner top wall of the housing 22. The rotating shaft 24 is fixed to the output shaft of the servo motor 23. The rotating shaft 24 is rotatably connected to the bottom wall of the housing 22 and extends to the outside of the housing 22. The cutting head 25 is fixed to the bottom of the rotating shaft 24. The left side of the telescopic hose 26 is fixed to the cooling box 15, and the right side of the telescopic hose 26 extends through to the inside of the housing 22. The bottom of the telescopic hose 26 located in the inner cavity of the housing 22 is connected to an exhaust pipe 27 that extends through to the outside of the bottom of the housing 22.

[0038] It can be seen that by powering the servo motor 23, the cutting head 25 is rotated. Combined with the lifting function of the sliding component 20 and the swing function of the swing component 6, the cutting flexibility of the device is improved, and the device's performance is enhanced.

[0039] The clamping mechanism includes a rotary motor 8, a rotating rod 10, a slider 11, and a clamping plate 12. The rotary motor 8 is fixed to the top of the placement platform 7, the rotating rod 10 is fixed to the output shaft of the rotary motor 8, the rotating rod 10 passes through the fixed platform 9 and is rotatably connected to the inner wall of its left side, and two sections of threaded wire with opposite directions are fixed on the outer side of the rotating rod 10.

[0040] By setting opposite threads, it is beneficial to rotate the rotating rod 10 to drive the relative displacement of the two sliders 11, thereby achieving clamping of the internal workpiece, which is conducive to improving the stability of the device and enhancing the device's performance.

[0041] It can also be seen that the top of the fixed platform 9 is provided with a sliding opening, the slider 11 is slidably connected to the fixed platform 9 through the sliding opening, the slider 11 is threadedly connected to the outer side of the rotating rod 10, the slider 11 is slidably connected to the top of the fixed platform 9, and the clamping plate 12 is fixed to the top of the slider 11.

[0042] It should be noted that the sliding port design facilitates the stable sliding of slider 11, thereby improving the stability of the device.

[0043] Please see Figure 2 To improve the stability of the device, the shock absorption component 2 in this embodiment includes a telescopic damping rod 201, a rubber block 202, and a top support spring 203. The telescopic damping rod 201 is fixed to the inner bottom wall of the fixing plate 1, the rubber block 202 is fixed to the top of the telescopic damping rod 201, and the top support spring 203 is fixed to the bottom of the rubber block 202. The top support spring 203 is wrapped around the outside of the telescopic damping rod 201.

[0044] In this embodiment, the vibration generated by the overall device is processed by setting the telescopic damping rod 201 and the top support spring 203, realizing the shock absorption function of the device and improving the device's performance.

[0045] Please see Figure 3 To improve the cutting effect, the swing assembly 6 in this embodiment includes two connecting plates 601, a rotating frame 602, a fixed shaft 603, a drive block 604, and a connecting block 605. The connecting plates 601 are fixed to the top of the connecting plates 4, the rotating frame 602 is rotatably connected between the two connecting plates 601, the fixed shaft 603 is rotatably connected to the inner sidewalls of the front and rear of the rotating frame 602, the drive block 604 is fixed to the outer side of the fixed shaft 603, the connecting block 605 is fixed to the bottom of the drive block 604, and the connecting block 605 is fixed to the back of the output shaft of the drive motor 5.

[0046] In this embodiment, the drive motor 5 provides power to drive the drive block 604 to swing around the axis. By setting up the rotating frame 602 and the fixed shaft 603, the angle of the top of the drive block 604 can be adjusted, which is beneficial to adjusting the workpiece at different angles and improving the effectiveness of the device.

[0047] Please see Figure 4 For stable use of the device, the sliding component 20 in this embodiment includes a sliding sleeve 2001, a lifting plate 2002, a locking block 2003 and a limiting plate 2004. The sliding sleeve 2001 is threadedly connected to the outer side of the threaded rod 19. The lifting plate 2002 is fixed to the right side of the sliding sleeve 2001. The locking block 2003 is fixed to the front side of the lifting plate 2002. A displacement channel is provided on the inner side of the partition 21.

[0048] The displacement channel design improves the stability of the lifting plate 2002, thereby enhancing the overall stability of the device.

[0049] The lifting plate 2002 is slidably connected to the partition plate 21 through the displacement channel. The limiting plate 2004 is fixed to the back of the lifting plate 2002 and slidably connected to the partition plate 21. The partition plate 21 has a limiting channel that communicates with the displacement channel. The limiting plate 2004 is slidably connected to the partition plate 21 through the limiting channel. The locking block 2003 is locked to the outside of the telescopic hose 26.

[0050] In this embodiment, the setting of the limiting channel enables the stable lifting and lowering of the limiting plate 2004, which is beneficial for driving the cutting head 25 to move up and down. The locking setting of the clip block 2003 for the telescopic hose 26 is beneficial for locking the telescopic hose 26, which is beneficial for the stability of the lifting and lowering of the telescopic hose 26, and for improving the overall stability of the device.

[0051] All electrical components mentioned in this article are electrically connected to the controller and power supply. The control method of this utility model is controlled by the controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Furthermore, this utility model is mainly used to protect mechanical devices, so the control method and circuit connection will not be explained in detail.

[0052] The working principle of the above embodiments is as follows:

[0053] The workpiece is placed on the fixed platform 9, and the rotating motor 8 is started, driving the rotating rod 10 to rotate. Through the threaded connection of the slider 11 and the sliding connection between the slider 11 and the fixed platform 9, the relative displacement of the two clamping plates 12 is achieved, thereby fixing the workpiece. Then, the action motor 16 is started, and through the meshing action, the sliding sleeve 2001 is driven to rise and fall, thereby driving the housing 22 to rise and fall. At the same time, the servo motor 23 is started, thereby driving the cutting head 25 to rotate, thereby grinding the workpiece. Simultaneously, the drive motor 5 is started, driving the connecting block 605 to perform circumferential displacement. Through the rotational connection between the rotating frame 602 and the connecting plate 601 and the rotational connection between the drive block 604 and the rotating frame 602, the angle adjustment swing effect of the drive block 604 is achieved, thereby realizing the cutting of the workpiece at different angles, which is conducive to improving the use effect of the device. At the same time, cold air is supplied through the cooling box 15, and the cold air is transmitted to the cutting area of ​​the workpiece through the telescopic hose 26 and the air outlet pipe 27, which is conducive to improving the stability of workpiece grinding. The overall device has a good use effect.

Claims

1. A high-precision automotive parts low-temperature cold air cutting device, comprising a fixed plate (1), characterized in that: The fixed plate (1) is provided with a shock-absorbing component (2), and the shock-absorbing component (2) is fixed with a shock-absorbing plate (3) that is slidably connected to the fixed plate (1). The right side of the fixed plate (1) is fixed with a connecting plate (4), and the top of the connecting plate (4) is fixed with a drive motor (5). The top of the connecting plate (4) is provided with a swing component (6), and the swing component (6) is fixed with a placement platform (7). The top of the placement platform (7) is fixed with a fixed platform (9). The placement platform (7) is provided with a clamping mechanism that is movably connected to the fixed platform (9). The top of the shock-absorbing plate (3) is fixed with a support plate (13) and a partition plate (21). The top of the support plate (13) is fixed with a top plate (14). The right side of the support plate (13) is fixed with a cooling box (15). The top of the shock-absorbing plate (3) is provided with a lifting mechanism that is rotatably connected to the top plate (14). The lifting mechanism is provided with a sliding component (20) that is slidably connected to the partition plate (21). The sliding component (20) is fixed with an action mechanism. The operating mechanism includes a housing (22), a servo motor (23), a rotating shaft (24), a cutting head (25), a telescopic hose (26), and an exhaust pipe (27). The housing (22) is fixed to the sliding assembly (20). The servo motor (23) is fixed to the inner top wall of the housing (22). The rotating shaft (24) is fixed to the output shaft of the servo motor (23). The rotating shaft (24) is rotatably connected to the bottom wall of the housing (22). The rotating shaft (24) extends to the outside of the housing (22). The cutting head (25) is fixed to the bottom of the rotating shaft (24). The left side of the telescopic hose (26) is fixed to the cooling box (15). The right side of the telescopic hose (26) penetrates into the inside of the housing (22). The bottom of the telescopic hose (26) located in the inner cavity of the housing (22) is connected to an exhaust pipe (27) that penetrates to the outside of the bottom of the housing (22).

2. The high-precision automotive parts cryogenic cold air cutting device according to claim 1, characterized in that: The lifting mechanism includes an action motor (16), a drive gear (17), a driven gear (18), and a threaded rod (19). The action motor (16) is fixed to the top of the damping plate (3). The drive gear (17) is fixed to the output shaft of the action motor (16). The driven gear (18) meshes with the top of the drive gear (17). The threaded rod (19) is fixed to the axis at the top of the driven gear (18). The top of the threaded rod (19) is rotatably connected to the top plate (14).

3. The high-precision automotive parts cryogenic cold air cutting device according to claim 1, characterized in that: The shock absorption assembly (2) includes a telescopic damping rod (201), a rubber block (202), and a top support spring (203). The telescopic damping rod (201) is fixed to the inner bottom wall of the fixed plate (1), the rubber block (202) is fixed to the top of the telescopic damping rod (201), and the top support spring (203) is fixed to the bottom of the rubber block (202). The top support spring (203) is wrapped around the outside of the telescopic damping rod (201).

4. The high-precision automotive parts cryogenic cold air cutting device according to claim 1, characterized in that: The swing assembly (6) includes two connecting plates (601), a rotating frame (602), a fixed shaft (603), a drive block (604), and a connecting block (605). The connecting plate (601) is fixed to the top of the connecting plate (4). The rotating frame (602) is rotatably connected between the two connecting plates (601). The fixed shaft (603) is rotatably connected to the inner sidewalls of the front and rear of the rotating frame (602). The drive block (604) is fixed to the outer side of the fixed shaft (603). The connecting block (605) is fixed to the bottom of the drive block (604). The connecting block (605) is fixed to the back of the output shaft of the drive motor (5).

5. The high-precision low-temperature cold air cutting device for automotive parts according to claim 1, characterized in that: The clamping mechanism includes a rotating motor (8), a rotating rod (10), a slider (11), and a clamping plate (12). The rotating motor (8) is fixed to the top of the placement platform (7). The rotating rod (10) is fixed to the output shaft of the rotating motor (8). The rotating rod (10) passes through the fixed platform (9) and is rotatably connected to the inner wall of its left side. The slider (11) is threaded to the outer side of the rotating rod (10). The slider (11) is slidably connected to the top of the fixed platform (9). The clamping plate (12) is fixed to the top of the slider (11).

6. The high-precision automotive parts cryogenic cold air cutting device according to claim 5, characterized in that: Two sections of threaded wire with opposite directions are fixed on the outside of the rotating rod (10). A sliding port is provided on the top of the fixed platform (9). The slider (11) is slidably connected to the fixed platform (9) through the sliding port.

7. A high-precision automotive parts cryogenic cold air cutting device according to claim 2, characterized in that: The sliding assembly (20) includes a sliding sleeve (2001), a lifting plate (2002), a locking block (2003), and a limiting plate (2004). The sliding sleeve (2001) is threadedly connected to the outer side of the threaded rod (19). The lifting plate (2002) is fixed to the right side of the sliding sleeve (2001). The locking block (2003) is fixed to the front side of the lifting plate (2002). The limiting plate (2004) is fixed to the back side of the lifting plate (2002). The limiting plate (2004) is slidably connected to the partition (21). The locking block (2003) is engaged with the outer side of the telescopic hose (26).

8. A high-precision automotive parts cryogenic cold air cutting device according to claim 7, characterized in that: The partition (21) has a displacement channel on its inner side. The lifting plate (2002) is slidably connected to the partition (21) through the displacement channel. The partition (21) has a limiting channel that communicates with the displacement channel. The limiting plate (2004) is slidably connected to the partition (21) through the limiting channel.

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