Rotary clamp for reducing taper of small hole processed by laser

Abstract

The invention provides a rotary clamp for reducing the taper of a small hole machined through laser, and relates to the field of laser drilling. Comprising a box body, a clamping rotating mechanism is arranged at the top of the box body, the clamping rotating mechanism comprises a rotating fixing assembly and a limiting assembly, a limiting plate is driven to clamp a steel plate through the installed limiting assembly, the clamped steel plate is jacked up through the rotating fixing assembly so as to be turned over, and lifting moving mechanisms are installed at the four ends of the box body. The laser punching head is installed on the lifting moving mechanism and located above the clamping rotating mechanism to punch a steel plate, double-face punching is conducted on the steel plate through mutual cooperation of the clamping rotating mechanism and the lifting moving mechanism, the steel plate is turned over, the punching path is optimized, the idle stroke is reduced, and the production efficiency is further improved. And meanwhile, the cleaning mechanism is installed in the box body, chippings generated by punching are collected at the same time, harmful substances in gas are blocked and purified through activated carbon filter cotton in the cleaning mechanism, and the body health of workers is effectively guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of laser drilling, in particular to a rotary fixture for reducing the taper of a small hole processed by laser. Background Art

[0002] Laser processing of small holes has become one of the key technologies in the field of small hole processing. Due to the high efficiency of long pulse laser processing and no tool loss, long pulse laser is widely used as a hole-making tool in actual production. With the rapid development of lasers, ultrashort pulse lasers have also been developed. Although ultrashort pulse lasers reduce defects such as heat-affected zones, recast layers, and microcracks, the taper of the small holes processed by both is still relatively high. When laser processing small holes, due to insufficient plasma injection outside the hole, plasma cloud accumulation is formed inside the hole, which affects the absorption of laser energy by the lower part of the hole, resulting in low material removal rate. In other words, as the depth increases, the gradually narrowing small hole wall will cause the laser beam acting along the circular path to be gradually shielded from the outside to the inside, and the laser focus will not act on the recast layer at the lower end of the small hole. Therefore, this paper proposes a double-sided processing method for laser drilling to further reduce the taper of laser-processed small holes and improve the quality of small holes.

[0003] Although the structure of the prior art can achieve hole making, there are still the following defects: often the punching efficiency. In the actual use of such devices, work efficiency ranks first. If both sides of the material need to be punched, people need to manually flip the operation, which will greatly reduce work efficiency. When punching, it will also be dangerous and cause injuries to workers. The flipping technology can ensure that the cutting and punching positions are accurately aligned, thereby improving the processing accuracy. The flipping technology can also enable diversified processing on the same piece of material, thereby improving production flexibility. Summary of the invention

[0004] The present invention provides a rotary fixture for reducing the taper of a small hole processed by laser, and performs double-sided punching by flipping a steel plate, thereby optimizing the punching path, reducing idle stroke, and further improving production efficiency.

[0005] To achieve the above object, the present invention provides the following technical solutions: A rotary fixture for reducing the taper of a small hole processed by laser, comprising a box, a clamping and rotating mechanism, a cleaning mechanism, a lifting and moving mechanism and a laser drilling head, wherein the clamping and rotating mechanism and the lifting and moving mechanism are installed on the top of the box, the cleaning mechanism is installed inside the box, and the laser drilling head is installed on the lifting and moving mechanism and is located above the clamping and rotating mechanism; The clamping and rotating mechanism includes a rotating and fixing component and a limiting component; The rotating fixed assembly includes a mounting slot, a cylinder, a lifting plate, a motor box 1, a motor 1, and a clamping frame. The mounting slots are located on both sides of the box body. Cylinders are installed in two of the mounting slots. A lifting plate is fixedly connected to the top of the cylinder. A motor box 1 is fixedly installed on the top of the lifting plate. A motor 1 is fixedly installed in the motor box 1. The output ends of the two motors 1 are connected to the two ends of the clamping frame. A steel plate is placed in the clamping frame. The lifting and moving mechanism controls the position of the laser drilling head to drill holes in the steel plate in the clamping frame. The limiting assembly includes bolts and limiting plates. Threaded holes are provided at the four corners of the clamping frame and are rotatably connected to the bolts. The limiting plates are located at both ends of the clamping frame. The bolts pass through the limiting plates and are rotatably connected to the threaded holes on the clamping frame. The limiting plates clamp and fix the steel plates by rotating the bolts.

[0006] Preferably, the rotation fixing assembly further comprises a limiting column and a limiting block, the limiting block is fixedly mounted on one side of the threaded hole at the four corners of the clamping frame, the limiting block is provided with a hole for plugging with the limiting column, and the limiting column is fixedly mounted on the box body.

[0007] Preferably, the lifting and moving mechanism comprises a lifting component and a moving component; The lifting assembly comprises a threaded rod 1, a guide rod, a motor box 2, a motor 2 and a sliding block. Vertical frames are respectively installed at both ends of the box body. A vertical threaded rod 1 is rotatably connected to both sides of the two frames, and a vertical guide rod is fixedly connected. The threaded rod 1 and the guide rod are both slidably connected with sliding blocks. The top end of the threaded rod 1 passes through the frame and is connected to the motor 2. The motor 2 is installed in the motor box 2. The moving assembly includes a top plate, a moving groove, a second threaded rod, a protective shell, a motor and a moving block. The top plate is fixedly connected to the sliding block on all sides. A moving groove is opened on the top plate, and the moving groove is located above the center line of the steel plate. The inner walls at both ends of the moving groove are rotatably connected with the second threaded rod, one end of the second threaded rod passes through the moving groove and is connected to the motor, a protective shell is provided on the outside of the motor, a moving block is connected to the second threaded rod, a support plate is fixedly connected to the top of the moving block, the support plate is slidably connected to the top plate, and a laser drilling head is fixedly connected to the bottom of the moving block.

[0008] Preferably, the lifting assembly further comprises a lifting cover, which is located on the outer side of the threaded rod 1 and the guide rod and is slidably connected to the sliding block to ensure the stability of the sliding block during the lifting process.

[0009] Preferably, the moving assembly further comprises a slide groove and a slider, the slide grooves are symmetrically arranged on both sides of the moving groove, sliders are arranged on the lower sides of both ends of the support plate, and the sliders are slidably connected to the slide grooves.

[0010] Preferably, the top surface of the box body is provided with a notch, the clamping frame is provided with an opening corresponding to the notch on the top surface of the box body, the box body has a space for accommodating a cleaning mechanism and is connected to the notch on the top surface of the box body, the cleaning mechanism cleans the debris generated by punching, the cleaning mechanism comprises an air spray component and a collecting component, the collecting component is located directly below the notch on the top surface of the box body, the air spray component is located on one side of the collecting component, and the air spray component and the collecting component are respectively located in two mutually isolated spaces; The air jet assembly includes an L-shaped plate, an exhaust fan, an air jet box, an oblique opening, and a plurality of ventilation pipes. The L-shaped plate isolates the air jet assembly from the space where the collecting assembly is located. The L-shaped plate is fixedly connected to the box body and has an exhaust fan installed inside. The air jet box is connected to the space formed by the L-shaped plate and the box body through a plurality of ventilation pipes. The air jet box is located on one side of the clamping and rotating mechanism, and an oblique opening facing the punching position is opened on the air jet box. The collection component includes a pull-out groove and activated carbon filter cotton. The outside of the pull-out groove is provided with a handle for pulling, the inside of the pull-out groove is provided with a accommodating space for collecting punching debris, and the bottom of the pull-out groove is provided with activated carbon filter cotton for absorbing harmful substances in the gas.

[0011] The beneficial effects of the present invention include: 1. A rotary clamp for reducing the taper of small holes processed by laser, which starts the cylinder to lift the lifting plate, so that the clamped steel plate is lifted up. At the same time, the rotating fixing component is started again to rotate, so that the steel plate is flipped, and then double-sided punching is performed. By flipping the steel plate, the punching path is optimized, the idle stroke is reduced, and the production efficiency is further improved. The installed limit component drives the limit plate to clamp, so as to avoid sudden movement or slipping during flipping, which may cause safety risks to the operator, and effectively improves safety and stability.

[0012] 2. A rotary fixture for reducing the taper of a small hole processed by laser, by starting the air jet component, sprays air from the oblique mouth, so that the debris and harmful gas generated during the drilling are blown into the interior of the box, to avoid long-term artificial inhalation of harmful gases and debris, which may lead to health problems such as chronic respiratory diseases, cardiovascular diseases, and nervous system damage. The installed collection component is used to uniformly collect the incoming debris to avoid the debris being scattered in the workshop and causing pollution to the workshop, thereby effectively improving the cleanliness. The harmful gas passes through the activated carbon filter cotton to block and purify the harmful substances in the gas, so that the harmful gas blown out is converted into air, to avoid the emission of harmful gases to pollute the surrounding environment, and to avoid the workers from being injured by long-term inhalation, thereby effectively ensuring the health of the workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of the three-dimensional structure of this application; Figure 2 It is a rear view structural diagram of this application; Figure 3 This is a schematic diagram of the cross-sectional structure of the clamping and rotating mechanism of the present application; Figure 4 For this application Figure 3 A magnified view of the structure in the middle; Figure 5 This is a schematic diagram of the cross-sectional structure of the cleaning mechanism of this application; Figure 6 This is a schematic diagram of the cross-sectional structure of the lifting component of the present application; Figure 7 This is a schematic diagram of the cross-sectional structure of the mobile component of this application; Figure 8 This is a schematic diagram of the cross-sectional structure of the top plate of this application.

[0014] The following are included: 1. Box; 10. L-shaped plate; 11. Laser drilling head; 2. Clamping and rotating mechanism; 20. Rotating and fixing assembly; 21. Limiting assembly; 201. Mounting slot; 202. Cylinder; 203. Lifting plate; 204. Motor box 1; 205. Motor 1; 206. Limiting column; 207. Limiting block; 208. Clamping frame; 211. Bolt; 212. Limiting plate; 3. Cleaning mechanism; 30. Air spray assembly; 31. Collecting assembly; 301. Motor frame; 302. Exhaust fan; 303. Air spray box; 304, oblique opening; 305, ventilation pipe; 311, pull-out slot; 312, activated carbon filter cotton; 4, lifting and moving mechanism; 40, lifting assembly; 41, moving assembly; 401, lifting cover; 402, threaded rod one; 403, guide rod; 404, motor box two; 405, motor two; 406, sliding block; 411, top plate; 412, moving slot; 413, threaded rod two; 414. Protective shell; 415, motor; 416, support plate; 417, moving block; 418, slide slot; 419, slider. DETAILED DESCRIPTION

[0015] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] In the description of the present invention, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0017] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] like Figure 1-2 As shown, a rotary fixture for reducing the taper of a small hole processed by laser comprises a box body 1, a clamping and rotating mechanism 2, a cleaning mechanism 3, a lifting and moving mechanism 4 and a laser drilling head 11. The clamping and rotating mechanism 2 is installed on the top surface of the box body 1, and a notch corresponding to the clamping and rotating mechanism 2 is opened on the top of the box body 1. The lifting and moving mechanism 4 is installed at the four ends of the top of the box body 1. The laser drilling head 11 is installed on the lifting and moving mechanism 4 and is located above the clamping and rotating mechanism 2. The inside of the box body 1 has a space for accommodating the cleaning mechanism 3 and is connected to the notch on the top surface of the box body 1. The cleaning mechanism 3 cleans the debris generated by drilling.

[0019] like Figure 3-4As shown, the clamping and rotating mechanism 2 includes a rotating and fixing component 20 and a limiting component 21. The rotating and fixing component 20 includes two groups of mounting grooves 201 opened on the top of the box body 1. Cylinders 202 are arranged in the two mounting grooves 201. A lifting plate 203 is fixedly connected to the top of the cylinder 202. A motor box 204 is fixedly installed on the top of the lifting plate 203. A motor 205 is fixedly installed in the motor box 204. The output ends of the two motors 205 are connected to the two ends of the clamping frame 208. The clamping frame 208 is provided with an opening corresponding to the notch on the top of the box body 1. A steel plate is placed in the clamping frame 208. The lifting and moving mechanism 4 controls the laser drilling. The head 11 is positioned to punch holes in the steel plate in the clamping frame 208; the limiting assembly 21 includes a bolt 211 and a limiting plate 212. Threaded holes are provided at the four corners of the clamping frame 208 and are rotatably connected to the bolts 211. The limiting plate 212 is located at both ends of the clamping frame 208. The bolts 211 pass through the limiting plate 212 and are rotatably connected to the threaded holes on the clamping frame 208. The limiting plate 212 is clamped and fixed to the steel plate by loosening and tightening the bolts 211. The limiting block 207 is fixedly installed on one side of the threaded holes at the four corners of the clamping frame 208. The limiting block 207 is provided with a hole to be plugged into the limiting column 206, and the limiting column 206 is fixedly installed on the box body 1.

[0020] Specifically, the bolt 211 is manually tightened so that the limit plate 214 moves downward under the action of the bolt 211, thereby clamping the steel plate inside the clamping frame 208 to prevent it from falling off when flipping.

[0021] Specifically, by starting the cylinder 202, the lifting plate 203 is driven to rise, and the clamping frame 208 is driven to move upward at the same time, and the limit block 207 is released from the limit column 206. When the limit block 207 is completely disengaged from the limit column 206 and the clamping frame 208 has enough rotation space, that is, when the distance between the clamping frame 208 and the box body 1 is greater than half the width of the two ends of the clamping frame 208, the motor 205 is started to drive the clamping frame 208 to rotate 180°. After the rotation, the cylinder 202 contracts again, which drives the clamping frame 208 and the limit block 207 to be plugged into the limit column 206 again. It is further explained that during the rotation, it rotates in place, and the limit block 207 is plugged into the limit column 206 to fix the position of the clamping frame 208 and the internal steel plate, so as to avoid displacement during drilling, resulting in inaccurate cutting, and effectively improve stability.

[0022] like Figure 6As shown, the lifting and moving mechanism 4 includes a lifting component 40, two vertical frames are installed at both ends of the box body 1, and a vertical threaded rod 402 is rotatably connected to the two sides of the two frames, and a vertical guide rod 403 is fixedly connected to the two sides, and a sliding block 406 is slidably connected to the threaded rod 402 and the guide rod 403. The top of the threaded rod 402 passes through the frame and is connected to the motor 2 405. The motor 2 405 is installed in the motor box 2 404, and the lifting cover 401 is located on the outside of the threaded rod 402 and the guide rod 403 and is slidably connected to the sliding block 406.

[0023] like Figure 7 and 8 As shown, the lifting and moving mechanism 4 also includes a moving component 41, and the two side ends of the top plate 411 are fixedly connected to the sliding block 406. A moving groove 412 is opened on the top plate 411, and the inner walls at both ends of the moving groove 412 are rotatably connected with a threaded rod 413. One end of the threaded rod 413 passes through the moving groove 412 and is connected to a motor 415. A protective shell 414 is provided on the outside of the motor 415, and a moving block 417 is fixedly connected to the threaded rod 413. A laser drilling head 11 is fixedly connected below the moving block 417. Slide grooves 418 are symmetrically opened on both sides of the moving groove 412, and a support plate 416 is fixedly connected to the top of the moving block 417. Slide blocks 419 are provided on the lower sides of both ends of the support plate 416, and the slide blocks 419 are slidably connected to the slide grooves 418.

[0024] Specifically, by starting the motor 2 405, the threaded rod 1 402 is driven to rotate, and under the action of the guide rod 403, the top plate 411 is raised and lowered to adjust the height of the drilling and accurately control the position of the laser drilling head 11. This can achieve higher drilling accuracy, and the guide rod 403 is used to maintain balance during the lifting and lowering to avoid tilting during the lifting and lowering, causing falling and damage to the equipment, thereby effectively improving stability.

[0025] Specifically, by starting the motor 415, the threaded rod 413 is driven to rotate, and the linkage moving block 417 is moved, so that the laser drilling head 11 is moved to drill holes in different positions of the steel plate, which effectively improves the flexibility and work efficiency. The installed protective shell 414 is used to protect the motor 415 to prevent the motor 415 from being damaged by external impact and causing damage to the internal electronic components.

[0026] Specifically, when moving, the two sliders 419 are driven to slide inside the slide groove 418, thereby ensuring the stability and support of the laser drilling head 11 when moving.

[0027] Specifically, the movable groove 412 opened on the top plate 411 is opposite to the center line of the steel plate in the clamping frame 208, so that the laser drilling head 11 can perform symmetrical drilling on the front and back sides of the steel plate before and after the steel plate is turned over.

[0028] like Figure 5 As shown, the cleaning mechanism 3 includes an air spray assembly 30 and a collecting assembly 31, the collecting assembly 31 is located just below the notch on the top surface of the box body 1, and the air spray assembly 30 is located on one side of the collecting assembly; the air spray assembly 30 and the collecting assembly 31 are respectively located in two mutually isolated spaces; the air spray assembly 30 includes an L-shaped plate 10, a motor frame 301, an exhaust fan 302, an air spray box 303, an oblique opening 304, and a plurality of ventilation pipes 305, the L-shaped plate isolates the space where the air spray assembly 30 and the collecting assembly 31 are located, the L-shaped plate 10 is fixedly connected to the box body 1 and the motor frame 301 and the exhaust fan 302 are installed inside, and the two ends of the motor frame 301 are respectively fixed to one side of the L-shaped plate 10 and the inner side wall of the box body 1 The motor frame 301 is connected, an exhaust fan 302 is installed on the motor frame 301, and a plurality of ventilation pipes 305 are installed on the outer wall of the box body 1 on the opposite side of the L-shaped plate 10. One end of the ventilation pipe 305 is connected to the outer wall of the box body 1 on the side of the exhaust fan 302, and the other end is connected to the air jet box 303. The air jet box 303 is located on one side of the clamping rotating mechanism 2, and an oblique opening 304 facing the punching position is provided on the air jet box 303; the collecting component 31 includes a pull-out groove 311 and activated carbon filter cotton 312. The pull-out groove 311 has a handle on the outside for pulling, and the pull-out groove 311 has a storage space inside for collecting punching debris. Activated carbon filter cotton 312 is provided at the bottom of the pull-out groove 311 for adsorbing harmful substances in the gas.

[0029] Specifically, after the exhaust fan 302 is started, the wind is transported into the air blower box 303 through a number of ventilation pipes 305, and then blows air to the punching position through the inclined opening 304. The pulling groove 311 is manually pulled to uniformly clear the debris inside the pulling groove 311 to prevent the debris from being scattered outside and polluting the interior of the workshop, thereby effectively improving the cleanliness. The installed activated carbon filter cotton 312 is used to purify and block harmful substances in the harmful gases generated by punching.

[0030] Working steps: All electrical equipment in this solution are powered by an external power supply.

[0031] S1. When using the rotary clamp for reducing the taper of a small hole processed by laser, the steel plate is placed on the clamping frame 208, and the limit plate 214 is moved downward by manually tightening the bolt 211, so as to clamp the steel plate inside the clamping frame 208 to prevent it from falling off when flipping; S2. By starting the motor 2 405, the threaded rod 1 402 is driven to rotate. Under the action of the guide rod 403, the top plate 411 is raised and lowered to adjust the height of the drilling, and the position of the laser drilling head 11 is accurately controlled to achieve higher drilling accuracy. The guide rod 403 maintains balance during the lifting and lowering to avoid tilting during the lifting and lowering, causing falling off and causing damage to the equipment, thereby effectively improving the stability.

[0032] S3. After determining the position of the top plate 411, start the motor 415 to drive the threaded rod 413 to rotate, and the linkage moving block 417 to move, so that the laser drilling head 11 moves to drill holes at different positions of the steel plate. The protective shell 414 is used to protect the motor 415 to prevent the motor 415 from being damaged by external impact and causing damage to internal electronic components.

[0033] S4. After completing the punching on one side of the steel plate, start the cylinder 202 to lift the lifting plate 203, driving the steel plate in the clamping frame 208 to lift up. At the same time, the limit block and the limit column 206 are disconnected. When the limit block 207 is completely separated from the limit column 206, after the clamping frame 208 reaches a certain height, start the motor 205 to drive the clamping frame 208 and the steel plate in the clamping frame 208 to rotate 180°. After the rotation, the cylinder 202 contracts again, driving the clamping frame 208 to move downward, so that the limit block 207 is plugged into the limit column 206 again.

[0034] S5, after the steel plate is turned over, repeat steps S2 and S3 to punch holes in the steel plate; S6. During the punching process of the steel plate, the exhaust fan 302 is started, and the wind is transported into the interior of the air jet box 303 through multiple ventilation pipes 305, and then ejected through the oblique mouth 304, so that the debris and harmful gas generated by the punching on the clamping and rotating mechanism 2 are blown into the drawing groove 311, and the debris falls into the interior of the drawing groove 311 and is collected uniformly. The harmful gas will pass through the activated carbon filter cotton 312, and the drawing groove 311 is manually pulled to uniformly remove the debris inside the drawing groove 311 and regularly replace the activated carbon filter cotton 312, so as to purify and block, avoid long-term inhalation of workers and cause damage to the body, and effectively ensure the health of the workers.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotary fixture for reducing the taper of a laser-processed small hole, characterized in that: The invention comprises a box body (1), a clamping and rotating mechanism (2), a cleaning mechanism (3), a lifting and moving mechanism (4) and a laser drilling head (11), wherein the clamping and rotating mechanism (2) and the lifting and moving mechanism (4) are installed on the top of the box body (1), the cleaning mechanism (3) is installed inside the box body (1), and the laser drilling head (11) is installed on the lifting and moving mechanism (4) and is located above the clamping and rotating mechanism (2); The clamping rotation mechanism (2) comprises a rotation fixing component (20) and a limiting component (21); The rotating fixed component (20) comprises a mounting groove (201), a cylinder (202), a lifting plate (203), a motor box (204), a motor (205), and a clamping frame (208), wherein the mounting groove (201) is located on both sides of the box body (1), the cylinders (202) are installed in the two mounting grooves (201), the lifting plate (203) is fixedly connected to the top of the cylinder (202), the motor box (204) is fixedly installed on the top of the lifting plate (203), the motor box (204) is fixedly installed in the motor box (204), the output ends of the two motors (205) are connected to the two ends of the clamping frame (208), a steel plate is placed in the clamping frame (208), and the lifting and moving mechanism (4) controls the position of the laser drilling head (11) to drill holes in the steel plate in the clamping frame (208); The limiting assembly (21) comprises a bolt (211) and a limiting plate (212); threaded holes are provided at four corners of the clamping frame (208) and are rotatably connected to the bolts (211); the limiting plates (212) are located at both ends of the clamping frame (208); the bolts (211) pass through the limiting plates (212) and are rotatably connected to the threaded holes on the clamping frame (208); and the limiting plates (212) are clamped and fixed to the steel plate by rotating the bolts (211).

2. A rotary fixture for reducing the taper of a laser-processed small hole according to claim 1, characterized in that: The rotation fixing assembly (20) further comprises a limiting column (206) and a limiting block (207); the limiting block (207) is fixedly mounted on one side of the threaded holes at the four corners of the clamping frame (208); the limiting block (207) is provided with a hole for plugging into the limiting column (206); and the limiting column (206) is fixedly mounted on the box body (1).

3. A rotary fixture for reducing the taper of a laser-processed small hole according to claim 1, characterized in that: The lifting and moving mechanism (4) comprises a lifting component (40) and a moving component (41); The lifting assembly (40) comprises a threaded rod (402), a guide rod (403), a motor box (404), a motor (405) and a sliding block (406); vertical frames are respectively installed at both ends of the box body (1); a vertical threaded rod (402) is rotatably connected to the two sides of the two frames, and a vertical guide rod (403) is fixedly connected to the two sides; the threaded rod (402) and the guide rod (403) are both slidably connected to the sliding block (406); the top end of the threaded rod (402) passes through the frame and is connected to the motor (405); the motor (405) is installed in the motor box (404); The moving assembly (41) comprises a top plate (411), a moving groove (412), a second threaded rod (413), a protective shell (414), a motor (415) and a moving block (417). The top plate (411) is fixedly connected to the sliding block (406) on all sides. The top plate (411) is provided with a moving groove (412). The moving groove (412) is located above the center line of the steel plate. The inner walls at both ends of the moving groove (412) are rotatably connected to the second threaded rod (413). One end of the second threaded rod (413) passes through the moving groove (412) and is connected to the motor (415). A protective shell (414) is provided on the outside of the motor (415). The second threaded rod (413) is connected to the moving block (417). The top of the moving block (417) is fixedly connected to a support plate (416). The support plate (416) is slidably connected to the top plate (411). The bottom of the moving block (417) is fixedly connected to a laser drilling head (11).

4. A rotary fixture for reducing the taper of a laser-processed small hole according to claim 3, characterized in that: The lifting assembly (40) further comprises a lifting cover (401), wherein the lifting cover (401) is located outside the threaded rod (402) and the guide rod (403) and is slidably connected to the sliding block (406) to ensure the stability of the sliding block (406) during the lifting process.

5. A rotary fixture for reducing the taper of a laser-processed small hole according to claim 4, characterized in that: The moving assembly (41) further comprises a slide groove (418) and a slider (419), wherein the slide groove (418) is symmetrically arranged on both sides of the moving groove (412), and sliders (419) are arranged on the lower sides of both ends of the support plate (416), and the sliders (419) are slidably connected to the slide groove (418).

6. A rotary fixture for reducing the taper of a laser-processed small hole according to claim 1, characterized in that: The top surface of the box body (1) is provided with a notch, the clamping frame (208) is provided with an opening corresponding to the notch on the top surface of the box body (1), the box body (1) has a space inside for accommodating a cleaning mechanism (3) and is in communication with the notch on the top surface of the box body (1), the cleaning mechanism (3) cleans debris generated by punching, the cleaning mechanism (3) comprises an air jet component (30) and a collecting component (31), the collecting component (31) is located directly below the notch on the top surface of the box body (1), the air jet component (30) is located on one side of the collecting component, and the air jet component (30) and the collecting component (31) are respectively located in two mutually isolated spaces; The air spray assembly (30) comprises an L-shaped plate (10), an exhaust fan (302), an air spray box (303), an oblique opening (304), and a plurality of ventilation pipes (305); the L-shaped plate (10) isolates the air spray assembly (30) from the space where the collecting assembly (31) is located; the L-shaped plate (10) is fixedly connected to the box body (1) and has an exhaust fan (302) installed therein; the air spray box (303) is connected to the space formed by the L-shaped plate (10) and the box body (1) via a plurality of ventilation pipes (305); the air spray box (303) is located on one side of the clamping rotating mechanism (2); and the air spray box (303) is provided with an oblique opening (304) facing the punching position; The collection component (31) comprises a pull-out groove (311) and an activated carbon filter cotton (312); the pull-out groove (311) has a handle on the outside for pulling, the pull-out groove (311) has a receiving space inside for collecting punched debris, and the bottom of the pull-out groove (311) is provided with an activated carbon filter cotton (312) for absorbing harmful substances in the gas.

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