Laser cutting device for cutter machining and laser cutting process

Abstract

The invention discloses a laser cutting device for cutter machining and a laser cutting process, and relates to the technical field of cutter machining. The laser cutting device specifically comprises a laser cutting assembly, a workpiece supporting assembly and a slag collecting and cleaning assembly; the slag collecting and cleaning assembly comprises a fixing block connected with the workpiece supporting assembly, a telescopic pipe connected with the fixing block through a moving structure and a slag limiting cylinder connected with the telescopic pipe. Slag is limited through the slag limiting barrel, the slag is prevented from splashing all around, and the cleaning difficulty of the device is lowered; in the moving process of the slag in the slag limiting cylinder, the inner pipe is in a rotating state, static combination of an adhesion interface is damaged, cooling of the slag is achieved through cooling gas, the slag is rapidly cooled and solidified, melting adhesion is reduced, the cleaning difficulty of the device is further reduced, the cooling gas can achieve cooling of a cutting seam, and the cutting efficiency is improved. Laser heat influence is weakened, tool machining quality is improved, and product precision is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of cutting tool processing technology, specifically to a laser cutting device and laser cutting process for cutting tools. Background Technology

[0002] In the field of tool manufacturing, laser cutting has become an indispensable processing technology in key processes such as tool blank forming, edge machining, and groove machining due to its advantages of high cutting precision, small heat-affected zone, high cutting efficiency, and ability to cut complex shapes. A laser cutting device typically consists of a laser generator, a cutting head, a worktable, a motion control system, and an auxiliary gas supply system. Its core function is to generate a high-energy-density laser beam, which is focused by the cutting head and applied to the surface of the workpiece. This causes the material in the irradiated area to rapidly melt and vaporize. Simultaneously, auxiliary gases (such as oxygen or nitrogen) are used to blow the molten material and slag away from the cutting area, thus forming a high-quality kerf and completing the cutting process.

[0003] In existing laser cutting equipment for tool processing, the worktable used to support the tool and workpiece often adopts a serrated structure design. This type of worktable forms a support surface through several parallel serrated support bars, which can reduce the contact area between the support surface and the workpiece while ensuring effective support, thereby reducing interference between the support surface and the laser cutting path and ensuring smooth cutting. However, in actual cutting, the molten slag produced during cutting is easily dropped and adhered to the surface and gaps of the serrated support bars under the influence of gravity and auxiliary gas. Due to the high hardness and strong adhesion of the molten slag after cooling, it is difficult to completely remove it from the serrated structure. Furthermore, some molten slag will splash under high temperature and pressure during cutting, easily scattering to various corners of the worktable, further increasing the difficulty of slag cleaning.

[0004] In addition, laser cutting is essentially a thermal processing method. During cutting, the high-energy laser beam will generate local high temperatures in the area around the cut, forming a heat-affected zone. In the current process, only the auxiliary gas ejected from the cutting head is used to dissipate heat and remove slag in the cut area. The heat dissipation range is limited and the heat dissipation efficiency is insufficient, making it difficult for heat to dissipate quickly from the cut area. A large amount of heat is conducted into the tool and workpiece, reducing the performance of the tool.

[0005] Based on this, this application proposes a laser cutting device and a laser cutting process for tool processing. Summary of the Invention

[0006] This invention provides a laser cutting device and laser cutting process for tool processing, which solves the problems mentioned in the background art, such as easy slag buildup on the worktable and difficulty in cleaning; and the heat-affected zone at the cut, which damages the performance of the tool material.

[0007] This invention provides the following technical solution: a laser cutting device for tool processing, comprising a laser cutting assembly, a workpiece support assembly, and a slag collection and cleaning assembly. The slag collection and cleaning assembly includes a fixed block connected to the workpiece support assembly, a telescopic tube connected to the fixed block via a movable structure, and a slag limiting cylinder connected to the telescopic tube. The top of the slag limiting cylinder is fitted against the bottom of the tool cutting seam, and the moving path of the slag limiting cylinder overlaps with the tool cutting seam. The slag limiting cylinder includes an outer tube connected to the telescopic tube and a movable inner cavity of the outer tube. The system comprises a movable inner tube, a scraper ring connected to the top of the inner tube cavity, and a scraper located within the inner tube cavity. The scraper is connected to the inner wall of the bottom end of the outer tube via a linear moving structure. A hollow cavity is formed between the outer tube and the inner tube. The inner cavity of the telescopic tube is connected to the hollow cavity via a connecting pipe. Exhaust holes are evenly distributed at the top of the outer tube. An air inlet pipe is provided at the bottom of the fixed block. A connecting cavity is provided on the fixed block, and the connecting cavity is connected to the inner cavity of the telescopic tube. A driving assembly is provided on the outer tube, and the inner tube is driven to rotate by the driving assembly.

[0008] A vacuum suction cup is provided at the center of the top of the fixing block, and a vacuum pump is provided at the bottom of the fixing block. The air inlet of the vacuum pump is connected to the inner cavity of the vacuum suction cup through a vacuum tube.

[0009] Preferably, the laser cutting assembly includes a frame and a laser cutter, the laser cutter being connected to the top of the frame via a robotic arm.

[0010] Preferably, the working support assembly includes a fixed bracket and a lifting bracket. The top of the fixed bracket is uniformly provided with through slots, and a workpiece support column is detachably connected in the through slot. The lifting bracket is located below the through slot, and the top of the lifting bracket is provided with a placement slot for the workpiece support column. The lifting bracket achieves position fixation through a lifting structure.

[0011] Preferably, the distance between the lifting bracket and the through slot is less than the height of the workpiece support column.

[0012] Preferably, the fixing block is detachably connected to the fixing bracket via a fixing component, the fixing component including a support rod detachably connected to the fixing block and a telescopic clamp detachably connected to the bottom end of the support rod; the bottom of the fixing block is uniformly provided with mounting grooves adapted to the support rod.

[0013] Preferably, the bottom of the scraper is at the same height as the bottom of the inner tube, the top of the scraper contacts the bottom of the scraper ring, and the scraper ring is in close contact with the bottom of the cutting seam of the tool.

[0014] Preferably, the top of the vacuum suction cup is at the same height as the top of the molten slag limiting cylinder, and the bottom of the molten slag limiting cylinder is located above the working support assembly.

[0015] A laser cutting process for tool processing includes the following steps:

[0016] Step 1: The staff removes the workpiece support column that restricts the slag collection and cleaning component, and uses the fixing component to install the fixing block in the preset position of the fixing bracket; the tool to be processed or the raw material for the tool is placed on the top of the workpiece support component, the slag limiting cylinder is located at the bottom of the laser cutting seam, and the vacuum suction cup is in contact with the bottom of the workpiece.

[0017] Step 2: Start the vacuum pump to remove the air between the vacuum suction cup and the workpiece, achieving a negative pressure connection between the workpiece and the vacuum suction cup; introduce the gas to cool the workpiece cutting seam into the air inlet pipe, and the cooling gas in the air inlet pipe enters the hollow cavity through the connecting cavity, the telescopic tube and the connecting pipe to cool the inner tube, and the gas in the hollow cavity is sprayed to the bottom of the workpiece cutting seam through the exhaust hole to cool the cutting seam.

[0018] Step 3: Move the laser cutter using a robotic arm to cut the workpiece.

[0019] Step 4: Use the moving structure to move the slag limiting cylinder so that the moving path of the slag limiting cylinder overlaps with the workpiece cutting path. The slag generated during the cutting process falls into the slag limiting cylinder, thereby limiting the slag. During the movement of the scraper ring, the slag adhering to the bottom of the cutting seam is scraped off. Use the drive component to drive the inner tube to rotate.

[0020] Step 5: When the inner tube needs to be cleaned, the linear moving structure drives the scraper to move until the scraper is in contact with the inner wall of the inner tube. When the inner tube rotates, the scraper cleans the inner wall of the inner tube.

[0021] Preferably, a laser cutting device for tool processing is applied to a laser cutting process for tool processing.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The laser cutting device and laser cutting process for tool processing utilize a slag limiting cylinder to limit the slag, preventing it from splashing everywhere and reducing the difficulty of cleaning the device. During the movement of the slag within the slag limiting cylinder, the inner tube is in a rotating state, which breaks the static bond of the adhesion interface. Cooling gas is used to cool the slag, allowing it to cool and solidify rapidly, reducing molten adhesion and further reducing the difficulty of cleaning the device. At the same time, the cooling gas can also cool the cutting seam, weaken the thermal impact of the laser, improve the tool processing quality, and ensure product precision.

[0024] 2. The laser cutting device and laser cutting process for tool processing, through the optimized structural design of the workpiece support component, realizes the detachable function of the workpiece support column, which allows the workpiece support column to be flexibly assembled or disassembled according to actual processing needs. This effectively avoids the problem of the workpiece support column interfering with the movement trajectory of the molten slag limiting cylinder, significantly improves the adaptability of the device under different working conditions, and enhances the practicality and flexibility of the equipment in diverse production scenarios. Attached Figure Description

[0025] Figure 1 This is a front view of a laser cutting device for tool processing proposed in this invention;

[0026] Figure 2 This is a three-dimensional schematic diagram of the workpiece support assembly and slag collection and cleaning assembly of the present invention;

[0027] Figure 3 This is a bottom view schematic diagram of the slag collection and cleaning component of the present invention;

[0028] Figure 4 This is a schematic cross-sectional view of the slag collection and cleaning component of the present invention;

[0029] Figure 5 This is a schematic diagram illustrating the connection principle between the workpiece support column and the through groove in Example 1.

[0030] In the diagram: 1. Fixed frame; 2. Robotic arm; 3. Laser cutter; 4. Fixed bracket; 5. Workpiece support column; 6. Lifting structure; 7. Lifting bracket; 8. Placement slot; 9. Outer tube; 10. Inner tube; 11. Scraper ring; 12. Vacuum suction cup; 13. Drive structure; 14. Rotating ring; 15. Through slot; 16. Miniature electric telescopic rod; 17. Insert block; 18. Exhaust port; 19. Linear movement structure; 20. Scraper; 21. Support rod; 22. Clamping fixture; 23. Telescopic rod; 24. Mounting slot; 25. Connecting pipe; 26. Telescopic pipe; 27. Connecting cavity; 28. Fixed block; 29. ​​Vacuum pump; 30. Inlet pipe; 31. Hollow cavity; 32. Drive assembly. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] This invention provides one embodiment: Please refer to Figures 1-5A laser cutting device for tool processing includes a laser cutting assembly, a workpiece support assembly, and a slag collection and cleaning assembly. The laser cutting assembly includes a fixed frame 1 and a laser cutter 3, which is connected to the top of the fixed frame 1 via a robotic arm 2. In use, the position of the laser cutter 3 is changed using the robotic arm 2, allowing the laser cutter 3 to cut the workpiece, facilitating tool processing. Both the robotic arm 2 and the laser cutter 3 are existing technologies, and their models can be set according to requirements; no limitations are imposed here.

[0033] The working support assembly includes a fixed bracket 4 and a lifting bracket 7. The top of the fixed bracket 4 is uniformly provided with through slots 15. A workpiece support column 5 is detachably connected in the through slot 15. In embodiment 1, grooves are provided on both sides of the bottom end of the through slot 15. Insert blocks 17 adapted to the grooves are movably connected on both sides of the bottom end of the workpiece support column 5. The insert blocks 17 are connected to the workpiece support column 5 through a micro electric telescopic rod 16. Under the action of the micro electric telescopic rod 16, the position of the insert blocks 17 can move. When the insert blocks 17 are aligned with the grooves, the end of the insert blocks 17 away from the micro electric telescopic rod 16 can be inserted into the groove, thereby realizing the connection between the workpiece support column 5 and the fixed bracket 4.

[0034] The lifting bracket 7 is located below the through slot 15. The top of the lifting bracket 7 has a placement slot 8 for the workpiece support column 5. When the workpiece support column 5 is disconnected from the fixed bracket 4, it falls into the placement slot 8 directly below it under gravity. The lifting bracket 7 supports the workpiece support column 5, and a buffer pad is provided in the placement slot 8 to reduce the impact between the workpiece support column 5 and the lifting bracket 7. The lifting bracket 7 is fixed in position via the lifting structure 6, and its height can be adjusted under the action of the lifting structure 6. The distance between the lifting bracket 7 and the through slot 15 is less than the height of the workpiece support column 5. The height of the lifting bracket 7 can be set according to requirements and is not limited here. With this configuration, the top of the workpiece support column 5 can be limited by the fixed bracket 4, and the bottom of the workpiece support column 5 is limited by the placement groove 8, improving the stability of the workpiece support column 5. Furthermore, under the action of the lifting structure 6, when the lifting bracket 7 moves the workpiece support column 5 upwards, the workpiece support column 5 can move within the through groove 15. When the top of the lifting bracket 7 contacts the bottom of the horizontal end of the fixed bracket 4, the insert block 17 is aligned with the groove. In Embodiment 1, the lifting structure 6 is an electric telescopic rod, and the model can be set according to requirements; no limitation is made here.

[0035] As can be seen from the above description, when using this application, the workpiece support column 5 on the fixed bracket 4 can be disassembled and assembled as needed.

[0036] The slag collection and cleaning assembly includes a fixed block 28 connected to a workpiece support assembly, a telescopic tube 26 connected to the fixed block 28 via a movable structure, and a slag limiting cylinder connected to the telescopic tube 26. The fixed block 28 is detachably connected to a fixed bracket 4 via a fixing assembly, which includes a support rod 21 detachably connected to the fixed block 28 and a telescopic clamp detachably connected to the bottom of the support rod 21. The bottom of the fixed block 28 is uniformly provided with mounting grooves 24 adapted to the support rod 21. By using the mounting grooves 24, the position between the telescopic clamp and the fixed block 28 can be changed when the support rod 21 is connected to the mounting grooves 24 at different positions, enhancing the adaptability and versatility of the fixing assembly. This allows the fixed block 28 to be reliably fixed in various scenarios, facilitating the use of the slag collection and cleaning assembly.

[0037] In Embodiment 2, the telescopic clamp includes two clamp-type clamps 22. One clamp-type clamp 22 is detachably connected to the bottom end of the support rod 21. The two clamp-type clamps 22 are connected by a telescopic rod 23. The telescopic rod 23 includes a fixed cylinder fixedly connected to one clamp-type clamp 22 and an inner cylinder movably connected to the other clamp-type clamp 22. The inner cylinder is threadedly connected to the fixed cylinder.

[0038] A vacuum suction cup 12 is installed at the center of the top of the fixing block 28, and a vacuum pump 29 is installed at the bottom of the fixing block 28. The air inlet of the vacuum pump 29 is connected to the inner cavity of the vacuum suction cup 12 through a vacuum tube. After the fixing block 28 is fixed in position, the top of the vacuum suction cup 12 is at the same height as the top of the molten slag limiting cylinder, and the bottom of the molten slag limiting cylinder is located above the working support assembly. Using the vacuum pump 29 and the vacuum suction cup 12, the workpiece to be cut can be connected to the vacuum suction cup 12 under negative pressure, thereby fixing the position of the workpiece and improving the stability of workpiece cutting.

[0039] The top of the slag limiting cylinder fits into the bottom of the cutting slit of the tool. Under the action of the moving structure, the moving path of the slag limiting cylinder overlaps with the cutting slit of the tool. During the processing, the slag generated by the cutting is directed into the slag limiting cylinder in the direction of the cutting slit. The slag limiting cylinder limits the slag, preventing it from splashing in all directions, reducing the cleaning cost of the device, and preventing the slag from adhering to the top of the fixed bracket 4. This also prevents the workpiece support from being uneven due to slag accumulation on the top of the workpiece support column 5, making it easier to place the workpiece.

[0040] In Embodiment 3, the workpiece cutting seam is annular. The moving structure includes a rotating ring 14 movably sleeved on the outer ring of the fixed block 28. A driving structure 13 is provided on the fixed block 28. The rotating ring 14 is driven to rotate by the driving structure 13. When the driving structure 13 drives the rotating ring 14 to rotate, the rotating ring 14 drives the slag limiting cylinder to make a circular motion through the telescopic tube 26. In use, the operator uses the telescopic tube 26 to change the distance between the slag limiting cylinder and the fixed block 28, so that the rotation path of the slag limiting cylinder overlaps with the cutting path. In Embodiment 3, the telescopic tube 26 is driven by a cylinder to realize its telescopic function.

[0041] The slag limiting cylinder includes an outer tube 9 connected to a telescopic tube 26, an inner tube 10 movably connected to the inner cavity of the outer tube 9, a scraper ring 11 connected to the top of the inner cavity of the inner tube 10, and a scraper 20 located in the inner cavity of the inner tube 10; a hollow cavity 31 is formed between the outer tube 9 and the inner tube 10, and the inner cavity of the telescopic tube 26 is connected to the hollow cavity 31 through a connecting pipe 25. Exhaust holes 18 are evenly distributed at the top of the outer tube 9, and an air inlet pipe 30 is provided at the bottom of the fixing block 28. The upper part is provided with a connecting cavity 27, which is connected to the inner cavity of the telescopic tube 26. When this application is used, when the gas for cooling the cutting seam is blown into the air inlet pipe 30, the cooling gas in the air inlet pipe 30 enters the hollow cavity 31 through the connecting cavity 27, the telescopic tube 26 and the connecting pipe 25, thereby cooling the inner tube 10. During the movement of the molten slag in the inner tube 10, the molten slag can be cooled, reducing the probability of the molten slag adhering to the inner tube 10.

[0042] A drive assembly 32 is provided on the outer tube 9, and the inner tube 10 is driven to rotate by the drive assembly 32. When the drive assembly 32 drives the inner tube 10 to rotate, the probability of molten slag adhering to the inner tube 10 can be further reduced.

[0043] The scraper 20 is connected to the inner wall of the bottom end of the outer tube 9 through the linear movement structure 19. The bottom of the scraper 20 is at the same height as the bottom of the inner tube 10, and the top of the scraper 20 contacts the bottom of the scraper ring 11. Under the action of the linear movement structure 19, the distance between the scraper 20 and the inner wall of the inner tube 10 can be changed. When the scraper 20 is in close contact with the inner wall of the inner tube 10, the scraper 20 can clean the molten slag adhering to the inner wall of the inner tube 10 when the inner tube 10 rotates, so that the molten slag limiting cylinder has a self-cleaning function. When the scraper 20 is separated from the inner wall of the inner tube 10, the friction between the two during use can be reduced, thereby reducing wear.

[0044] The scraper ring 11 fits tightly against the bottom of the cutting slit. During the movement of the slag limiting cylinder, the scraper ring 11 can scrape off the slag adhering to the bottom of the cutting slit.

[0045] As described above, when this application is in use, the slag limiting cylinder is used to limit the slag, preventing the slag from splashing everywhere and reducing the difficulty of cleaning the device. During the movement of the slag in the slag limiting cylinder, the inner tube 10 is in a rotating state, which breaks the static bond of the adhesion interface, and the cooling gas is used to cool the slag, so that the slag cools down and solidifies quickly, reducing molten adhesion and further reducing the difficulty of cleaning the device. At the same time, the cooling gas can also cool the cutting seam, weaken the thermal impact of the laser, improve the processing quality of the tool, and ensure the precision of the product.

[0046] The present invention also provides a laser cutting process for tool processing, comprising the following steps:

[0047] Step 1: The staff removes the workpiece support column 5, which restricts the slag collection and cleaning component, and uses the fixing component to install the fixing block 28 in the preset position of the fixing bracket 4; the tool to be processed or the raw material for the tool is placed on the top of the workpiece support component, the slag limiting cylinder is located at the bottom of the laser cutting seam, and the vacuum suction cup 12 is in contact with the bottom of the workpiece.

[0048] Step 2: Start the vacuum pump 29 to remove the air between the vacuum suction cup 12 and the workpiece, achieving a negative pressure connection between the workpiece and the vacuum suction cup 12; introduce the gas to cool the workpiece cutting seam into the air inlet pipe 30, and the cooling gas in the air inlet pipe 30 enters the hollow cavity 31 through the connecting cavity 27, the telescopic pipe 26 and the connecting pipe 25 to cool the inner tube 10, and the gas in the hollow cavity 31 is sprayed to the bottom of the workpiece cutting seam through the exhaust hole 18 to cool the cutting seam;

[0049] Step 3: Move the laser cutter 3 using the robotic arm 2, and use the laser cutter 3 to cut the workpiece;

[0050] Step 4: The controller drives the moving structure to move the slag limiting cylinder, so that the moving path of the slag limiting cylinder overlaps with the workpiece cutting path. The slag generated during the cutting process falls into the slag limiting cylinder, thereby limiting the slag and preventing it from splashing everywhere. During the movement of the scraper ring 11, the slag adhering to the bottom of the cutting seam is scraped off, thus cleaning the cutting seam. During the cutting process, the drive component 32 drives the inner tube 10 to rotate, breaking the static bond of the adhesion interface. Under the action of centrifugal force and gravity, the residence time and adhesion rate of the slag on the tube wall are reduced.

[0051] Step 5: When the inner tube 10 needs to be cleaned, the linear moving structure 19 drives the scraper 20 to move until the scraper 20 is in contact with the inner wall of the inner tube 10. When the inner tube 10 rotates, the scraper 20 cleans the inner wall of the inner tube 10.

[0052] All standard parts used in this invention can be purchased from the market, and irregularly shaped parts can be customized according to the description and drawings. The specific connection methods of each structure adopt conventional techniques such as bolt connection, which are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The materials and specifications of each component can be selected according to requirements and are not limited here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laser cutting apparatus for tool machining, comprising a laser cutting assembly, a workpiece support assembly, and a slag collection and cleaning assembly, characterized by: The molten slag collecting and cleaning assembly comprises a fixed block (28) connected with the workpiece support assembly, a telescopic pipe (26) connected with the fixed block (28) through a moving structure, and a molten slag limiting cylinder connected with the telescopic pipe (26), the top of the molten slag limiting cylinder is in close contact with the bottom of the cutter cutting gap, and the moving path of the molten slag limiting cylinder overlaps the cutter cutting gap, the molten slag limiting cylinder comprises an outer pipe (9) connected with the telescopic pipe (26), an inner pipe (10) movably connected with the inner cavity of the outer pipe (9), a scraping ring (11) connected with the top end of the inner cavity of the inner pipe (10), and a scraper (20) located in the inner cavity of the inner pipe (10), the scraper (20) is connected with the inner wall at the bottom end of the outer pipe (9) through a linear moving structure (19); a hollow cavity (31) is formed between the outer pipe (9) and the inner pipe (10), the inner cavity of the telescopic pipe (26) is communicated with the hollow cavity (31) through a connecting pipe (25), the top end of the outer pipe (9) is uniformly provided with an exhaust hole (18), the bottom of the fixed block (28) is provided with an air inlet pipe (30), the fixed block (28) is provided with a connecting cavity (27), the connecting cavity (27) is communicated with the inner cavity of the telescopic pipe (26); the outer pipe (9) is provided with a driving assembly (32), and the inner pipe (10) is driven to rotate through the driving assembly (32). The middle part of the top of the fixed block (28) is provided with a vacuum chuck (12), and the bottom of the fixed block (28) is provided with a vacuum pump (29), the air inlet end of the vacuum pump (29) is communicated with the inner cavity of the vacuum chuck (12) through a vacuum pipe.

2. The laser cutting apparatus for tool machining according to claim 1, characterized by: The laser cutting assembly comprises a fixed frame (1) and a laser cutter (3), and the laser cutter (3) is connected with the top end of the fixed frame (1) through a mechanical arm (2).

3. The laser cutting apparatus for tool machining according to claim 1, characterized by: The work support assembly comprises a fixed support (4) and a lifting support (7), the top of the fixed support (4) is uniformly provided with a through slot (15), the workpiece support column (5) is detachably connected in the through slot (15), the lifting support (7) is located below the through slot (15), the top of the lifting support (7) is provided with a placing groove (8) matched with the workpiece support column (5), and the lifting support (7) is fixed in position through a lifting structure (6).

4. A laser cutting apparatus for tool machining according to claim 3, characterized in that: The distance value between the lifting support (7) and the through slot (15) is less than the height value of the workpiece support column (5).

5. The laser cutting apparatus for tool machining according to claim 3, wherein: The fixed block (28) is detachably connected with the fixed support (4) through a fixing assembly, the fixing assembly comprises a support rod (21) detachably connected with the fixed block (28), and a telescopic clamp detachably connected with the bottom end of the support rod (21); the bottom of the fixed block (28) is uniformly provided with a mounting groove (24) matched with the support rod (21).

6. The laser cutting apparatus for tool machining according to claim 1, wherein: The bottom of the scraper (20) is at the same height as the bottom of the inner pipe (10), the top of the scraper (20) is in contact with the bottom of the scraping ring (11), and the scraping ring (11) is in close contact with the bottom of the cutter cutting gap.

7. The laser cutting apparatus for tool machining according to claim 1, wherein: The top of the vacuum chuck (12) is at the same height as the top of the molten slag limiting cylinder, and the bottom of the molten slag limiting cylinder is above the working support assembly.

8. A laser cutting process for tool machining, characterized by, The method comprises the following steps: Step one: the staff removes the workpiece support column (5) which may limit the molten slag collection and cleaning assembly, installs the fixed block (28) on the preset position of the fixed support (4) by using the fixing assembly, places the tool to be processed or the raw material of the production tool on the top of the workpiece support assembly, and places the molten slag limiting cylinder at the bottom of the laser cutting seam, and the vacuum chuck (12) is in contact with the bottom of the workpiece; Step two: start the vacuum pump (29), use the vacuum pump (29) to pump away the air between the vacuum chuck (12) and the workpiece, realize the negative pressure connection between the workpiece and the vacuum chuck (12), and pass the cooling gas for the workpiece cutting seam into the air inlet pipe (30), the cooling gas in the air inlet pipe (30) enters the hollow cavity (31) through the connecting cavity (27), the telescopic pipe (26) and the connecting pipe (25), realizes the cooling of the inner pipe (10), and the gas in the hollow cavity (31) is sprayed to the bottom of the workpiece cutting seam through the exhaust hole (18), realizes the cooling of the cutting seam; Step three: move the laser cutter (3) by the mechanical arm (2), and cut the workpiece by using the laser cutter (3); Step four: move the molten slag limiting cylinder by using the moving structure, so that the moving path of the molten slag limiting cylinder overlaps with the workpiece cutting path, the molten slag generated in the cutting process falls into the molten slag limiting cylinder, realizes the limiting of the molten slag, and the molten slag adhered to the bottom of the cutting seam is scraped off in the moving process of the scraper ring (11); rotate the inner pipe (10) by using the driving assembly (32); Step five: when the inner pipe (10) needs to be cleaned, move the scraper (20) by the linear moving structure (19) until the scraper (20) is attached to the inner wall of the inner pipe (10), and clean the inner wall of the inner pipe (10) when the inner pipe (10) rotates.

9. A laser cutting process for tool machining according to claim 8, characterized in that: The laser cutting device for tool machining of claim 1 is applied to a laser cutting process for tool machining.

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