Laser processing equipment for precisely cutting metal casting

Abstract

The invention relates to the technical field of metal processing, and discloses laser processing equipment for precise cutting of metal castings, which comprises a machine table, a moving frame is slidably connected to the side wall of the machine table, a first motor is fixedly connected to the outside of the machine table, a first transmission screw is connected to the output end of the first motor, a second motor is fixedly connected to the outside of the moving frame, and a second transmission screw is connected to the output end of the second motor. The output end of the second motor is connected with a second transmission screw rod, the exterior of the second transmission screw rod is in threaded connection with a hanging frame, the upper side of the hanging frame is fixedly connected with an electric push rod, the output end of the electric push rod is connected with a cutting head, a heat conduction assembly is arranged in the hanging frame, and a limiting block is fixedly connected in the hanging frame. The cutting head is driven by the hanging frame to reach the to-be-machined area of the machining block, at the moment, the cutting head is heated due to cutting, and therefore the effects that the machining block is precisely machined, auxiliary fixing is conducted on the machining block, sliding of the machining block is avoided, and the cutting precision of the device is further improved can be achieved.

Description

Technical Field

[0001] This invention relates to the field of metal processing technology, specifically to laser processing equipment for precise cutting of metal castings. Background Technology

[0002] Metal processing refers to the general term for the process of using metal materials such as steel, aluminum, copper, and alloys to change the shape, size, properties, or surface state of materials through mechanical, physical, and chemical means to produce various metal parts, components, or finished products. It is widely used in many industrial fields such as machinery manufacturing, automobiles, aerospace, construction, electronics, shipbuilding, and weaponry. Its main processing methods can be divided into cold working and hot working, and specific processes include cutting, forming, joining, and surface treatment. Metal processing relies on specialized equipment such as lathes, milling machines, grinding machines, stamping machines, casting equipment, and welding machines, combined with auxiliary tools such as cutting tools, molds, and fixtures. At the same time, appropriate processes are selected according to the material characteristics and product requirements. Among them, laser processing equipment is an important part of metal processing.

[0003] Related metal processing typically uses mechanical fixtures to fix the workpiece. However, these external fixing devices have a slow response and require additional drive, making them unable to adapt to dynamic changes during the processing in real time. This can lead to micro-displacement of the workpiece during high-speed precision cutting, which in turn affects the accuracy of the processed contour and the surface quality. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a laser processing device for precise cutting of metal castings. It solves the problem that related metal processing typically uses mechanical fixtures to fix the workpiece, but these external fixing devices have a lag response and require additional drive, which makes the workpiece prone to micro-displacement during high-speed precision cutting, thus affecting the accuracy of the processing contour and surface quality.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a laser processing equipment for precise cutting of metal castings, comprising a machine base, a movable frame slidably connected to the side wall of the machine base, a motor fixedly connected to the outside of the machine base, a transmission screw connected to the output end of the motor, a second motor fixedly connected to the outside of the movable frame, a transmission screw connected to the output end of the second motor, a hanger threadedly connected to the outside of the transmission screw, an electric push rod fixedly connected to the upper side of the hanger, a cutting head connected to the output end of the electric push rod, a heat-conducting component disposed inside the hanger and connected to the cutting head, a limit block fixedly connected inside the hanger, a sliding rod slidably connected to the limit block, a slider fixedly connected to the top end of the sliding rod, a tension spring disposed on the side wall of the hanger, a pressing component disposed at the bottom end of the sliding rod, a processing block disposed on the upper side of the machine base, and the pressing component connected to the processing block.

[0006] By adopting the above technical solution, when motor one starts, it drives transmission screw one to rotate inside the machine, and then transmission screw one drives the moving frame to slide; then motor two drives transmission screw two to rotate, thereby pushing the hanger to move and positioning the cutting head to the processing area of ​​the processing block; then, the electric push rod drives the cutting head to perform cutting operations on the processing block; during the cutting process, the cutting head generates heat due to friction, and the heat is conducted to the heat-conducting component through contact, causing the heat-conducting component to expand due to heat; at this time, the expanded body applies lateral pressure to the adjacent slider, forcing the slider to slide along its guide rail, while stretching the tension spring to store energy and deform, thereby driving the slide rod to move in the guide hole of the limiting block, and finally causing the extrusion component to press down on the processing block, achieving dynamic stabilization, thereby maintaining the positioning stability of the workpiece, preventing the processing block from shifting, and improving the cutting accuracy.

[0007] Preferably, the heat-conducting component includes a heat-conducting block, which is fixedly connected inside the bracket, and a deformable block is fixedly connected outside the heat-conducting block. The deformable block is disposed outside the bracket, with its lower side disposed above the slider, and its outer side disposed outside the cutting head.

[0008] Preferably, the extrusion assembly includes a mounting block, the upper side of which is fixedly connected to the bottom end of the slide rod. A return spring is provided inside the mounting block, and an extrusion block is provided at one end of the return spring. The lower side of the extrusion block is provided on the upper side of the processing block.

[0009] Preferably, the external rotatable connection of the first transmission screw is to the inside of the machine tool, the external threaded connection of the first transmission screw is to the inside of the movable frame, the external slidable connection of the slider is to the inside of the hanger, one end of the tension spring is located inside the slider, the bottom end of the cutting head is located on the upper side of the processing block, and the external part of the cutting head is located on the side wall of the hanger.

[0010] Preferably, a positioning block is fixedly connected to the upper side of the machine tool, a second deformable block is provided inside the positioning block, a heat-conducting telescopic rod is provided on the outer side of the second deformable block, and a heat-conducting block is fixedly connected to one end of the heat-conducting telescopic rod.

[0011] Preferably, the external part of the heat-conducting telescopic rod is slidably connected to the inside of the positioning block, and the external part of the second heat-conducting block is disposed outside the processing block.

[0012] Preferably, the deformable block 2 is externally fixedly connected to a toothed block, the toothed block is externally slidably connected to the inside of a positioning block, the positioning block is internally rotatably connected to a rotating shaft, the rotating shaft is externally fixedly connected to a gear, the tooth end of the gear is meshed with the tooth end of the toothed block, one end of the rotating shaft is fixedly connected to a cooling fan, and the positioning block is externally fixedly connected to a protective cover.

[0013] Preferably, a baffle is fixedly connected to the side wall of the mobile frame, a ramp is fixedly connected to the side wall of the machine base, a stop is rotatably connected to the side wall of the machine base, and a limit component is provided on the outside of the machine base.

[0014] Preferably, the limiting component includes a fixing block, the fixing block is fixedly connected to the outside of the machine tool, the limiting component is provided with a second reset spring, one end of the second reset spring is provided with a first locking block, the first locking block is fixedly connected to the outside of a second locking block, and the outside of the second locking block is located inside the fixing block.

[0015] Preferably, the outer side of the first locking block is slidably connected to the inside of the fixed block, and the outer side of the first locking block is disposed inside the stop block.

[0016] Working principle: This laser processing equipment achieves spatial positioning of the cutting head through a three-axis linkage mechanical structure. Motor 1 drives transmission screw 1 to rotate, converting the rotational motion into horizontal displacement of the moving frame along the machine guide rail via a threaded transmission pair. Motor 2 drives transmission screw 2 to rotate, causing the hanging bracket and the cutting head mounted on it to be vertically positioned along the moving frame. This ensures that the cutting head can quickly and accurately move to any target coordinate above the processing block. After positioning, the electric push rod extends, driving the cutting head to perform the cutting operation on the workpiece.

[0017] The heat generated during the cutting process is transferred in real time through the closely contacting heat-conducting components. When the deformable block expands due to heat, it will generate axial displacement, pushing the slider to overcome the resistance of the tension spring and move downward. The slider transmits the displacement to the extrusion component at the bottom through the slide rod. The reset spring in the mounting block applies pressure evenly to the extrusion block, thereby achieving dynamic clamping of the processing block. By using the waste heat generated by the cutting itself as the driving source, the fixing force occurs synchronously with the cutting action and the strength is adaptively adjusted with temperature, suppressing the micro-movement of the workpiece during the processing.

[0018] The heat absorbed by the processing block is conducted to the second set of shape memory alloy deformation blocks inside the positioning block through the second heat-conducting block and the heat-conducting telescopic rod. Its thermal expansion drives the rack and pinion mechanism, which in turn drives the cooling fan to rotate. The cooling fan not only provides forced air cooling to the cutting area, but its airflow can also simultaneously remove surface debris. The blown-away impurities are guided to the collection slide by the inclined baffle and temporarily stored by the openable and closable block. The limiting component adopts a spring-loaded locking block structure to ensure that the block is locked in the working state and opened during cleaning, thereby realizing the centralized recycling of impurities and avoiding secondary pollution.

[0019] This invention provides a laser processing device for precise cutting of metal castings. It has the following beneficial effects:

[0020] 1. This invention drives the cutting head to the processing area of ​​the processing block under the action of the hanger. Then, the electric push rod is activated to drive the cutting head to cut the processing block. At this time, the cutting head generates heat due to cutting, and the heat is transferred through contact with the heat-conducting component. The heat-conducting component expands due to the increased temperature, and then the heat-conducting component squeezes the slider. The slider slides under the action of the heat-conducting component, and then the slide rod slides under the action of the slider. Subsequently, the squeezing component presses down and stabilizes the processing block under the action of the limiting block. This achieves precise processing of the processing block while also providing auxiliary fixation of the processing block, preventing the processing block from sliding, and further improving the cutting accuracy of the device.

[0021] 2. In this invention, the heat-conducting block two transfers the heat generated by the heating of the processing block to the deformation block two through contact with the processing block. Then, the deformation block two expands inside the positioning block. At this time, the tooth block slides under the drive of the deformation block two, and then the gear rotates under the drive of the tooth block. The rotating shaft rotates under the drive of the gear, and then the cooling fan rotates under the drive of the rotating shaft to generate wind power, thereby cooling the surface of the processed block after cutting and removing the debris generated by cutting on the surface of the processed block. This can achieve the goal of recovering and utilizing the excess heat generated by laser cutting, and performing preliminary cleaning while assisting in cooling the processed part, thereby reducing the time and effort spent on manual cleaning and reducing energy consumption.

[0022] 3. In this invention, when the cooling fan rotates to remove impurities from the surface of the processing block, the impurities fall to the slide under their own weight and the guidance of the baffle. After the processing of the processing block is completed, the second locking block is rotated to move it away from the groove of the fixed block, and then the second locking block is pulled to drive the first locking block to disengage from the inside of the baffle. Then the second locking block is locked into another groove for fixation. Then the baffle is rotated to open it and the impurities intercepted by the baffle are collected in a unified manner. This can achieve the effect of collecting the blown-away impurities in a unified manner, further reducing the cleaning difficulty, and at the same time avoiding the effect of impurities getting stuck in the dead corner of the device and increasing the cleaning difficulty. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the laser processing equipment for precise cutting of metal castings proposed in this invention.

[0024] Figure 2 This is a cross-sectional schematic diagram of the internal structure of the hanger of the laser processing equipment for precise cutting of metal castings proposed in this invention.

[0025] Figure 3 This is a partial structural diagram of the limiting block of the laser processing equipment for precise cutting of metal castings proposed in this invention.

[0026] Figure 4This is a partial structural diagram of the moving frame of the laser processing equipment for precise cutting of metal castings proposed in this invention.

[0027] Figure 5 This is a cross-sectional schematic diagram of the internal structure of the positioning block of the laser processing equipment for precise cutting of metal castings proposed in this invention.

[0028] Figure 6 This is a partial structural diagram of the processing block of the laser processing equipment for precise cutting of metal castings proposed in this invention.

[0029] Figure 7 for Figure 6 Enlarged view of point A;

[0030] Figure 8 This is a partial structural diagram of the reset spring of the laser processing equipment for precise cutting of metal castings proposed in this invention.

[0031] The components include: 1. Machine base; 2. Moving frame; 3. Motor 1; 4. Transmission screw 1; 5. Motor 2; 6. Transmission screw 2; 7. Hanging bracket; 8. Electric push rod; 9. Cutting head; 10. Heat-conducting assembly; 101. Heat-conducting block 1; 102. Deformation block 1; 11. Limiting block; 12. Slide rod; 13. Tension spring; 14. Slider; 15. Extrusion assembly; 151. Mounting block; 152. Return spring 1; 53. Extrusion block; 16. Processing block; 17. Positioning block; 18. Deformation block two; 19. Thermally conductive telescopic rod; 20. Thermally conductive block two; 21. Rotating shaft; 22. Gear; 23. Cooling fan; 24. Tooth block; 25. Protective cover; 26. Baffle; 27. Slide; 28. Stop block; 29. ​​Limiting component; 291. Fixing block; 292. Return spring two; 293. Locking block one; 294. Locking block two. Detailed Implementation

[0032] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0033] Please see the appendix Figure 1 - Appendix Figure 4This invention provides a laser processing device for precise cutting of metal castings, including a machine base 1. A movable frame 2 is slidably connected to the side wall of the machine base 1. A motor 3 is fixedly connected to the outside of the machine base 1. A transmission screw 4 is connected to the output end of the motor 3. A motor 5 is fixedly connected to the outside of the movable frame 2. A transmission screw 6 is connected to the output end of the motor 5. A hanger 7 is threadedly connected to the outside of the transmission screw 6. An electric push rod 8 is fixedly connected to the upper side of the hanger 7. A cutting head 9 is connected to the output end of the electric push rod 8. A heat-conducting component 10 is provided inside the hanger 7 and is connected to the cutting head 9. A limit block 11 is fixedly connected inside the hanger 7. A slide rod 12 is slidably connected to the limit block 11. A slider 14 is fixedly connected to the top end of the slide rod 12. A tension spring 13 is provided on the side wall of the hanger 7. An extrusion component 15 is provided at the bottom end of the slide rod 12. A processing block 16 is provided on the upper side of the machine base 1, and the extrusion component 15 is connected to the processing block 16.

[0034] Specifically, firstly, motor 3 drives transmission screw 4 to rotate inside machine base 1. Then, moving frame 2 slides inside machine base 1 under the drive of transmission screw 4. Next, motor 5 drives transmission screw 6 to rotate inside moving frame 2. Then, hanging frame 7 slides along moving frame 2 under the drive of transmission screw 6. At this time, cutting head 9 reaches the processing area of ​​processing block 16 under the drive of hanging frame 7. Then, electric push rod 8 drives cutting head 9 to cut processing block 16. During this process, cutting head 9 generates heat due to cutting, and the heat is transferred through contact with heat-conducting component 10. Heat-conducting component 10 expands due to the increased temperature, and then the heat-conducting component 10 compresses the sliding frame. Block 14 and slider 14 slide along the inside of slider 14 under the drive of heat conduction component 10, while tension spring 13 undergoes elastic deformation under the drive of slider 14. Then, slide rod 12 slides along the inside of limit block 11 under the drive of slider 14. Subsequently, extrusion component 15 presses down and stabilizes processing block 16 under the drive of limit block 11. When processing is completed and cutting head 9 cools down, heat conduction component 10 returns to its original state, and slider 14 resets under the drive of tension spring 13. Then, extrusion component 15 resets. This achieves precise processing of processing block 16 while simultaneously providing auxiliary fixation of processing block 16, preventing processing block 16 from sliding, and further improving the cutting accuracy of the device.

[0035] See appendix Figure 4 The heat-conducting component 10 includes a heat-conducting block 101. The heat-conducting block 101 is fixedly connected inside the bracket 7. A deformable block 102 is fixedly connected outside the heat-conducting block 101. The exterior of the deformable block 102 is disposed inside the bracket 7. The lower side of the deformable block 102 is disposed above the slider 14. The exterior of the heat-conducting block 101 is disposed outside the cutting head 9.

[0036] Specifically, the heat-conducting block 101 is made of a heat-conducting material, while the deformation block 102 is made of a shape memory alloy. This allows the heat-conducting block 101 to quickly conduct the heat generated by the cutting head 9 to the deformation block 102. The deformation block 102 expands when heated, and then the deformation block 102 squeezes the slider 14 to drive it to move downward.

[0037] See appendix Figure 2 and attached Figure 3 The extrusion assembly 15 includes a mounting block 151, the upper side of which is fixedly connected to the bottom end of the slide rod 12. A return spring 152 is provided inside the mounting block 151, and an extrusion block 153 is provided at one end of the return spring 152. The lower side of the extrusion block 153 is provided on the upper side of the processing block 16.

[0038] Specifically, since the slide bar 12 is fixedly connected to the mounting block 151, the mounting block 151 moves down under the drive of the slide bar 12. At this time, the mounting block 151 presses the pressing block 153 through the return spring 152, so that the pressing block 153 is fixed on the surface of the processing block 16.

[0039] See appendix Figure 1 - Appendix Figure 4 The external rotatable connection of the transmission screw 4 is connected to the inside of the machine base 1. The external thread of the transmission screw 4 is connected to the inside of the moving frame 2. The external sliding connection of the slider 14 is connected to the inside of the hanging frame 7. One end of the tension spring 13 is located inside the slider 14. The bottom end of the cutting head 9 is located on the upper side of the processing block 16. The external part of the cutting head 9 is located on the side wall of the hanging frame 7.

[0040] Specifically, the transmission screw 4 is used to drive the moving frame 2 to slide along the machine base 1, and the tension spring 13 is used to assist the extrusion assembly 15 in resetting to avoid affecting the cutting head 9 in cutting.

[0041] See appendix Figure 5 and attached Figure 6 A positioning block 17 is fixedly connected to the upper side of the machine base 1. A second deformable block 18 is provided inside the positioning block 17. A heat-conducting telescopic rod 19 is provided on the outer side of the second deformable block 18. A second heat-conducting block 20 is fixedly connected to one end of the heat-conducting telescopic rod 19. The outer side of the heat-conducting telescopic rod 19 is slidably connected to the inside of the positioning block 17. The outer side of the second heat-conducting block 20 is provided to the outside of the processing block 16. A toothed block 24 is fixedly connected to the outside of the second deformable block 18. The outer side of the toothed block 24 is slidably connected to the inside of the positioning block 17. A rotating shaft 21 is rotatably connected inside the positioning block 17. A gear 22 is fixedly connected to the outside of the rotating shaft 21. The tooth end of the gear 22 meshes with the tooth end of the toothed block 24. A cooling fan 23 is fixedly connected to one end of the rotating shaft 21. A protective cover 25 is fixedly connected to the outside of the positioning block 17.

[0042] Specifically, when the processing block 16 is cut by the cutting head 9, its surface temperature rises rapidly. At this time, the heat-conducting block 20 transfers the heat generated by the heating of the processing block 16 to the deformable block 18 through the heat-conducting telescopic rod 19. The deformable block 18 is made of the same shape memory alloy as the deformable block 102. The deformable block 18 expands inside the positioning block 17. At this time, the toothed block 24 slides along the inside of the positioning block 17 under the drive of the deformable block 18. Then, the gear 22 rotates under the drive of the toothed block 24, and the rotating shaft 21 rotates inside the positioning block 17 under the drive of the gear 22. Then, the cooling fan 23 rotates under the drive of the rotating shaft 21 to generate wind, which cools the surface of the processed block 16 after cutting and removes the debris generated by cutting. This can achieve the recycling of excess heat generated by laser cutting, and perform preliminary cleaning while assisting in cooling the processing block 16, thereby reducing the time and effort spent on manual cleaning and reducing energy consumption.

[0043] See appendix Figure 6 - Appendix Figure 8 A baffle 26 is fixedly connected to the side wall of the movable frame 2, a ramp 27 is fixedly connected to the side wall of the machine base 1, a stop 28 is rotatably connected to the side wall of the machine base 1, and a limit assembly 29 is provided on the outside of the machine base 1; the limit assembly 29 includes a fixed block 291, which is fixedly connected to the outside of the machine base 1, and a second return spring 292 is provided inside the limit assembly 29. One end of the second return spring 292 is provided with a first locking block 293, and a second locking block 294 is fixedly connected to the outside of the first locking block 293. The outside of the second locking block 294 is located inside the fixed block 291; the outside of the first locking block 293 is slidably connected to the inside of the fixed block 291, and the outside of the first locking block 293 is located inside the stop 28.

[0044] Specifically, when the cooling fan 23 rotates to remove impurities from the surface of the processing block 16, the impurities are blown to the baffle 26, which is installed directly opposite the cutting head 9 to ensure precise interception of impurities. Since the baffle 26 is tilted, the impurities fall to the slide 27 under their own weight and guided by the baffle 26, and slide down the slide 27 to accumulate at the stop block 28. After the processing of the processing block 16 is completed, the second locking block 294 is rotated to leave the groove of the fixing block 291, and then the second locking block 294 is pulled to drive the first locking block 293 out of the inside of the stop block 28. Then the second locking block 294 is locked into another groove for fixation. Then the stop block 28 is rotated to open it and the impurities intercepted by the stop block 28 are collected. After that, the stop block 28 is closed and the first locking block 293 is reset to the inside of the stop block 28. This achieves the effect of collecting the blown-away impurities, further reducing the cleaning difficulty, and avoiding impurities from getting stuck in the dead corners of the device and increasing the cleaning difficulty.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A laser processing equipment for precision cutting of metal castings, characterized in that, The system includes a machine base (1), a movable frame (2) slidably connected to the side wall of the machine base (1), a motor (3) fixedly connected to the outside of the machine base (1), a transmission screw (4) connected to the output end of the motor (3), a motor (5) fixedly connected to the outside of the movable frame (2), a transmission screw (6) connected to the output end of the motor (5), a hanger (7) threadedly connected to the outside of the transmission screw (6), an electric push rod (8) fixedly connected to the upper side of the hanger (7), and a cutting head (9) connected to the output end of the electric push rod (8). The hanging bracket (7) is provided with a heat-conducting component (10), which is connected to the cutting head (9). A limiting block (11) is fixedly connected inside the hanging bracket (7). A sliding rod (12) is slidably connected to the limiting block (11). A slider (14) is fixedly connected to the top of the sliding rod (12). A tension spring (13) is provided on the side wall of the hanging bracket (7). An extrusion component (15) is provided at the bottom of the sliding rod (12). A processing block (16) is provided on the upper side of the machine base (1). The extrusion component (15) is connected to the processing block (16).

2. The laser processing equipment for precision cutting of metal castings according to claim 1, characterized in that, The heat-conducting component (10) includes a heat-conducting block (101), which is fixedly connected inside the bracket (7). A deformable block (102) is fixedly connected outside the heat-conducting block (101). The deformable block (102) is located inside the bracket (7). The lower side of the deformable block (102) is located on the upper side of the slider (14). The outer side of the heat-conducting block (101) is located outside the cutting head (9).

3. The laser processing equipment for precision cutting of metal castings according to claim 1, characterized in that, The extrusion assembly (15) includes a mounting block (151), the upper side of which is fixedly connected to the bottom end of the slide rod (12). A reset spring (152) is provided inside the mounting block (151), and an extrusion block (153) is provided at one end of the reset spring (152). The lower side of the extrusion block (153) is provided on the upper side of the processing block (16).

4. The laser processing equipment for precision cutting of metal castings according to claim 1, characterized in that, The external rotatable connection of the transmission screw (4) is connected to the inside of the machine base (1), the external thread of the transmission screw (4) is connected to the inside of the moving frame (2), the external sliding connection of the slider (14) is connected to the inside of the hanging frame (7), one end of the tension spring (13) is set inside the slider (14), the bottom end of the cutting head (9) is set on the upper side of the processing block (16), and the external part of the cutting head (9) is set on the side wall of the hanging frame (7).

5. The laser processing equipment for precision cutting of metal castings according to claim 1, characterized in that, A positioning block (17) is fixedly connected to the upper side of the machine base (1). A second deformation block (18) is provided inside the positioning block (17). A heat-conducting telescopic rod (19) is provided on the outer side of the second deformation block (18). A second heat-conducting block (20) is fixedly connected to one end of the heat-conducting telescopic rod (19).

6. The laser processing equipment for precision cutting of metal castings according to claim 5, characterized in that, The external sliding connection of the heat-conducting telescopic rod (19) is inside the positioning block (17), and the external of the heat-conducting block two (20) is set outside the processing block (16).

7. The laser processing equipment for precision cutting of metal castings according to claim 5, characterized in that, The deformable block 2 (18) is fixedly connected to the outside of a toothed block (24), the toothed block (24) is slidably connected to the inside of a positioning block (17), the positioning block (17) is rotatably connected to a rotating shaft (21), the rotating shaft (21) is fixedly connected to the outside of a gear (22), the tooth end of the gear (22) is meshed with the tooth end of the toothed block (24), one end of the rotating shaft (21) is fixedly connected to a cooling fan (23), and the positioning block (17) is fixedly connected to a protective cover (25).

8. The laser processing equipment for precision cutting of metal castings according to claim 1, characterized in that, The side wall of the mobile frame (2) is fixedly connected to a baffle (26), the side wall of the machine platform (1) is fixedly connected to a ramp (27), the side wall of the machine platform (1) is rotatably connected to a stop (28), and a limit assembly (29) is provided on the outside of the machine platform (1).

9. The laser processing equipment for precision cutting of metal castings according to claim 8, characterized in that, The limiting component (29) includes a fixing block (291), which is fixedly connected to the outside of the machine base (1). The limiting component (29) is provided with a second reset spring (292) inside. One end of the second reset spring (292) is provided with a first locking block (293). The first locking block (293) is fixedly connected to the outside of a second locking block (294), which is located inside the fixing block (291).

10. The laser processing equipment for precision cutting of metal castings according to claim 9, characterized in that, The outer side of the first card block (293) is slidably connected to the inside of the fixed block (291), and the outer side of the first card block (293) is set inside the stop block (28).

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