Laser cutting machine for cutting machine tool body and cutting process

Abstract

The invention relates to the technical field of laser cutting equipment, in particular to a laser cutting machine for cutting a machine tool body and a cutting technology.The laser cutting machine comprises a cutting table, a fixing frame arranged at the top end of the cutting table and a laser cutting head arranged at the bottom end of the fixing frame; according to the laser cutting device, when the to-be-cut area of the cover plate is cut, stable and continuous extrusion constraint can be formed, thermal expansion force generated when the long and thin groove is cut is effectively counteracted, groove wall bending and groove width deviation are reduced, and the size precision needed by precise threading and guiding of the long and thin groove is guaranteed; the heat conduction block on the abutting plate can rapidly guide out cutting heat, and in cooperation with directional blowing of the blowing assembly, heat dissipation can be accelerated so as to reduce a heat affected zone, improve the smoothness of a notch, ensure stable and reliable cutting quality, reduce subsequent assembly problems caused by thermal deformation and ensure stable and reliable cutting quality of metal manufacturing equipment during batch machining. And the overall processing efficiency of the metal manufacturing equipment is further optimized.

Description

Technical Field

[0001] The present invention relates to the technical field of laser cutting equipment, in particular to a laser cutting machine and a cutting process for cutting a machine tool bed. Background Art

[0002] As a key protective and structural component of metal manufacturing equipment, the machine tool bed cover needs to achieve multiple functions by opening slender grooves: first, it is used for the passage of cables and pipes to ensure the connection of the electrical and hydraulic systems inside the machine tool; second, it provides guide tracks for moving parts such as sliders and push rods to ensure transmission accuracy; third, it assists equipment heat dissipation and air circulation. The dimensional accuracy and form and position tolerances of these slender grooves directly affect the operating stability of the machine tool. Excessive groove width or wall bending will cause cable wear, guide jamming, and even equipment failure. Therefore, precise cutting technology is required to meet strict assembly requirements.

[0003] Existing laser cutting devices cut narrow slots in machine tool bed cover plates by emitting a high-energy laser beam from a laser cutting head, focusing it on the area to be cut. The laser energy locally melts or vaporizes the steel plate, while auxiliary gases (such as oxygen and nitrogen) blow away molten residue, forming the narrow slot structure. During operation, a stepper motor drives the lead screw, moving the laser cutting head along the X-axis. An electric telescopic rod adjusts the cutting head's height and Y-axis position, enabling continuous cutting of narrow slots at different locations. The cutting table secures the cover plate, and some equipment uses a simple mechanical fixture to position the cover plate's edge, ensuring relative stability during the cutting process.

[0004] Existing laser cutting devices have some defects in practical applications: First, the thermal deformation control is insufficient. The high heat generated by laser cutting causes the groove walls on both sides of the slender groove to overheat and expand locally. Due to the lack of targeted constraint mechanisms, obvious deviations in the groove width and bending of the groove walls are likely to occur after cooling, which cannot meet the requirements of precise threading or guiding; second, the surface treatment is missing. The rust or oxide layer in the area to be cut on the cover plate will reduce the laser energy absorption efficiency and heat conduction effect, resulting in unstable cutting quality. Summary of the Invention

[0005] The purpose of the present invention is to provide a laser cutting machine and cutting process for machine tool bed cutting, so as to solve some defects in practical applications of the existing laser cutting devices proposed in the above background technology: First, insufficient control of thermal deformation. The high heat generated by laser cutting causes local overheating and expansion of the groove walls on both sides of the slender groove. Due to the lack of targeted constraint mechanism, obvious deviation in groove width and bending of groove wall are likely to occur after cooling, which cannot meet the requirements of precise threading or guiding; second, lack of surface treatment. Rust or oxide layer in the area to be cut of the cover plate will reduce the laser energy absorption efficiency and heat conduction effect, resulting in unstable cutting quality.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a laser cutting machine for machine tool bed cutting, comprising a cutting table, a fixed frame arranged at the top of the cutting table, and a laser cutting head arranged at the bottom end of the fixed frame, wherein an auxiliary rod is fixedly installed on one side of the top of the cutting table, and a screw rod is rotatably installed on the other side of the top of the cutting table, a stepping motor is fixedly installed on one side of the cutting table, the output end of the stepping motor is coaxially fixed with one end of the screw rod, the outside of the screw rod and the outside of one side of the auxiliary rod are both penetrated by a limiting seat, the top of the limit seat is longitudinally fixed with a first electric telescopic rod, the output end of the first electric telescopic rod is fixed to one side of the bottom end of the fixed frame, a reciprocating assembly is provided at the top of the fixed frame, and two contact plates are symmetrically provided on both sides of the fixed frame at the bottom end of the laser cutting head, a trigger grinding assembly and a blowing assembly are provided inside the contact plate, and a pressing assembly is provided on the top of the contact plate.

[0007] Furthermore, the screw rod and the external limit seat are connected by a through thread, the auxiliary rod and the external limit seat are connected by a through sliding connection, a slide is fixedly installed between the two sides of the bottom end of the fixed frame, a second electric telescopic rod is fixedly installed at the bottom end of the slide, and the output end of the second electric telescopic rod is fixed to the top end of the laser cutting head.

[0008] Furthermore, the reciprocating assembly includes an auxiliary frame, a rotating shaft and a first cylinder. The auxiliary frame is laterally fixedly installed on one side of the top end of the fixed frame. The rotating shaft is rotatably installed in the middle position inside the auxiliary frame. The first cylinder is fixedly installed on the outside of one side of the auxiliary frame.

[0009] Furthermore, a driving gear is fixedly installed on one side of the bottom end of the rotating shaft, a driving rack is fixedly installed on the output end of the first cylinder, one side of the driving gear is meshed and connected with one side of the driving rack, a limiting gear is fixedly installed on the bottom end of the driving gear, and two limiting racks are symmetrically meshed and installed on both sides of the limiting gear, and the two limiting racks are both slidably engaged and installed on the outside of one side of the fixed frame.

[0010] Furthermore, the pressing assembly includes a plurality of limiting cylinders, and the plurality of limiting cylinders are fixedly installed at equal intervals on the bottom end of a limiting rack on the corresponding side. A limiting rod is slidably installed longitudinally inside the bottom end of each limiting cylinder, and the bottom end of the limiting rod is fixedly installed on the top end of a resistance plate on the corresponding side. A resistance spring is fixedly connected between the top end of the limiting rod and the top wall of the limiting cylinder.

[0011] Furthermore, a mounting groove is embedded in the bottom end of each of the resistance plates, and the trigger grinding assembly includes a plurality of grinding blocks and a second cylinder. The plurality of grinding blocks are arranged at equal intervals inside the mounting groove, and the second cylinder is fixedly installed on the outside of one side of the resistance plate. A heat conductive block is fitted between every two of the grinding blocks, and the heat conductive block is fixedly installed inside the mounting groove.

[0012] Furthermore, a first through hole is provided inside one side of the heat conductive block, a second through hole is provided inside the side of each grinding block close to the first through hole, a third through hole is provided inside the side of the resistance plate close to the second cylinder, and a resistance rod is fitted between the first through hole, the second through hole and the third through hole, and one end of the resistance rod is fixed to the output end of the second cylinder.

[0013] Furthermore, a limiting column is slidably installed on both sides of each grinding block, one end of the limiting column is fixedly installed on an inner wall of one side of the mounting groove, and a stop block is fixedly installed on the other end of the limiting column. A compression spring is sleeved through the outside of the limiting column close to the stop block, and both ends of the compression spring are respectively fixedly installed on one side of the stop block and the grinding block, an arc-shaped first interference block is fixedly installed on the inner wall of one side of the second through hole, and an arc-shaped second interference block is fixedly installed on the outside of the interference rod close to the first interference block.

[0014] Furthermore, the blowing assembly includes an air inlet pipe and a guide channel, the air inlet pipe is fixedly installed inside one side of the resistance plate, the guide channel is opened inside the resistance rod, a conductive head is fixedly installed on the outside of one side of the resistance rod, one end of the conductive head is conductively connected to one end of the guide channel, a first exhaust hole is longitudinally opened inside the second resistance block, the first exhaust hole is conductively connected to the inside of one side of the guide channel, and a second exhaust hole is opened between the first resistance block and the grinding block.

[0015] The present invention also provides a cutting process for a laser cutting machine for cutting a machine tool bed, comprising the following steps: S1: When laser cutting a slender groove on the machine tool bed cover, first control the second electric telescopic rod to drive the laser cutting head to retract, then control the first electric telescopic rod to drive the fixed frame and two contact plates to descend, and at the same time cooperate with the setting of the pressing component to press the two contact plates tightly against the top surface of the cover where the groove is to be cut, thereby offsetting the thermal expansion force of the groove wall and ensuring the cutting effect; S2: Through the fit of several heat-conducting blocks inside the bottom of the two abutment plates and the slit area of ​​the cover plate, as well as the setting of the air blowing component, the heat-conducting blocks can quickly dissipate the heat during laser cutting, reducing the heat transfer to the deep part of the groove wall, thus ensuring the overall cutting accuracy; S3: Before cutting, the reciprocating component can be controlled and the grinding component can be triggered to run as needed, so as to automatically treat the rust and oxide layer on the surface of the cover plate to be cut, thereby ensuring the heat transfer effect of the subsequent heat conduction block; S4: At the same time, when the reciprocating component and the trigger grinding component are running, the blowing component will be triggered to switch to run synchronously, which can blow gas to the grinding surface of the grinding block to clean the impurities generated by grinding and prevent them from adhering to the surface of the machine bed cover.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the arrangement of two contact plates and a pressing component, the laser cutting device can form a stable and continuous extrusion constraint when cutting the area to be cut on the cover plate, effectively offsetting the thermal expansion force during the cutting of the slender groove, reducing the bending of the groove wall and the deviation of the groove width, and ensuring the dimensional accuracy required for the precise threading and guiding of the slender groove. At the same time, the heat conduction block on the contact plate can quickly conduct the cutting heat, and cooperate with the directional blowing of the blowing component to accelerate the heat dissipation to reduce the heat-affected zone, improve the smoothness of the incision, ensure the stable and reliable cutting quality, reduce the subsequent assembly problems caused by thermal deformation, ensure the stable and reliable cutting quality of the metal manufacturing equipment during batch processing, and further optimize the overall processing efficiency of the metal manufacturing equipment; 2. By triggering the setting of the grinding component, the area to be cut on the cover plate can be pre-treated before cutting to remove surface rust and oxide layer, ensure efficient absorption of laser energy and heat transfer effect of the heat conducting block, and reduce cutting quality fluctuations from the source. At the same time, the blowing component can switch the airflow direction synchronously with the grinding action, and blow the impurities generated by grinding away from the surface of the cover plate in time to avoid secondary pollution, ensure the cleanliness of the area to be cut, improve the stability of the cutting process, and reduce rework caused by surface defects, so as to achieve better overall use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 Schematic diagram of the three-dimensional structure of the first electric telescopic rod and the fixing frame of the present invention; Figure 3 for Figure 2 A in the middle is an enlarged structural diagram; Figure 4 Schematic diagram of the three-dimensional structure of the slide and the second electric telescopic rod of the present invention; Figure 5 for Figure 4 The enlarged structural diagram at B in the middle; Figure 6 It is a partial cross-sectional three-dimensional structural schematic diagram of the limiting cylinder and the limiting rod of the present invention; Figure 7 Schematic diagram of the top view of the two contact plates of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the contact plate and the heat conducting block of the present invention; Figure 9 It is a schematic diagram of the three-dimensional structure of the contact plate and the grinding block of the present invention; Figure 10 This is a schematic diagram illustrating the second cylinder pushing the interference rod to move according to the present invention; Figure 11 It is a partial cross-sectional three-dimensional structural schematic diagram of the second abutment block and the first exhaust hole of the present invention; Figure 12 It is a partial cross-sectional three-dimensional structural schematic diagram of the guide channel and the conductive head of the present invention.

[0018] In the accompanying drawings, the components represented by the respective reference numerals are as follows: 1. Cutting table; 2. Auxiliary rod; 3. Screw; 4. Stepper motor; 5. Limiting seat; 6. First electric telescopic rod; 7. Fixed frame; 8. Slide; 9. Second electric telescopic rod; 10. Laser cutting head; 11. Auxiliary frame; 12. Rotating shaft; 13. Driving gear; 14. First cylinder; 15. Driving rack; 16. Limiting gear; 17. Limiting rack; 18. Limiting cylinder; 19. Limiting rod ; 20. Resistance plate; 21. Resistance spring; 22. Mounting groove; 23. Grinding block; 24. Heat-conducting block; 25. First through hole; 26. Limiting column; 27. Stop block; 28. Compression spring; 29. ​​Second through hole; 30. First resistance block; 31. Resistance rod; 32. Second cylinder; 33. Second resistance block; 34. Third through hole; 35. Inlet pipe; 36. Guide channel; 37. Conducting head; 38. First exhaust hole; 39. Second exhaust hole. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Example 1: Please refer to Figure 1 - Figure 2, a laser cutting machine for machine tool bed cutting, comprises a cutting table 1, a fixed frame 7 arranged at the top of the cutting table 1 and a laser cutting head 10 arranged at the bottom of the fixed frame 7. An auxiliary rod 2 is fixedly installed on one side of the top of the cutting table 1, and a screw rod 3 is rotatably installed on the other side of the top of the cutting table 1. A stepping motor 4 is fixedly installed on one side of the cutting table 1. The output end of the stepping motor 4 is coaxially fixed with one end of the screw rod 3. The outside of the screw rod 3 and the outside of one side of the auxiliary rod 2 are both penetrated by a limited seat 5. The top of the limit seat 5 is longitudinally fixed with a first electric telescopic rod 6, and the output end of the first electric telescopic rod 6 is fixed to one side of the bottom end of the fixed frame 7. A reciprocating component is provided on the top of the fixed frame 7, and two contact plates 20 are symmetrically provided on both sides of the fixed frame 7 at the bottom end of the laser cutting head 10. A trigger grinding component and a blowing component are provided inside the contact plate 20, and a pressing component is provided on the top of the contact plate 20.

[0021] The screw rod 3 and the limit seat 5 outside it are connected by a through thread, and the auxiliary rod 2 and the limit seat 5 outside it are connected by a through sliding connection. A slide 8 is fixedly installed between the two sides of the bottom end of the fixed frame 7, and a second electric telescopic rod 9 is fixedly installed at the bottom end of the slide 8. The output end of the second electric telescopic rod 9 is fixed to the top of the laser cutting head 10.

[0022] A driving gear 13 is fixedly installed on one side of the bottom end of the rotating shaft 12, and a driving rack 15 is fixedly installed on the output end of the first cylinder 14. One side of the driving gear 13 is meshed with one side of the driving rack 15, and a limiting gear 16 is fixedly installed on the bottom end of the driving gear 13. Two limiting racks 17 are symmetrically meshed and installed on both sides of the limiting gear 16. The two limiting racks 17 are both slidably engaged and installed on the outside of one side of the fixed frame 7.

[0023] The pressing assembly includes a plurality of limiting cylinders 18, which are fixedly installed at equal intervals at the bottom end of a limiting rack 17 on the corresponding side. A limiting rod 19 is slidably installed longitudinally inside the bottom end of each limiting cylinder 18. The bottom end of the limiting rod 19 is fixedly installed on the top end of a resistance plate 20 on the corresponding side. A resistance spring 21 is fixedly connected between the top end of the limiting rod 19 and the top wall of the limiting cylinder 18.

[0024] In this embodiment, the machine tool bed cover is first placed on the cutting table 1. After it is initially fixed by the existing edge positioning structure, the equipment is started to enter the working mode. The stepper motor 4 drives the screw rod 3 to rotate. Since the screw rod 3 is threadedly connected to the limit seat 5, and the auxiliary rod 2 forms a sliding guide for the limit seat 5, the limit seat 5 drives the top first electric telescopic rod 6 and the fixed frame 7 to move precisely along the X-axis direction until the laser cutting head 10 is aligned with the starting position of the slender groove to be cut; at the same time, the slide 8 drives the second electric telescopic rod 9 and the laser cutting head 10 to fine-tune along the Y-axis direction, and cooperates with the vertical extension of the second electric telescopic rod 9 to complete the laser cutting. After the three-dimensional positioning of the cutting head 10, the first electric telescopic rod 6 is controlled to be retracted, driving the fixed frame 7 and the resistance plates 20 on both sides of the bottom end to descend until the resistance plates 20 are close to the surface of the cover plate, and the limit rod 19 slides in the limit cylinder 18 and compresses the resistance spring 21, and uses the spring force to tightly press the two resistance plates 20 on both sides of the cover plate to be cut, forming a stable pre-tightening constraint, thereby effectively offsetting the thermal expansion force during the cutting of the slender groove, reducing the bending of the groove wall and the groove width deviation, and ensuring the dimensional accuracy required for the precise threading and guiding of the slender groove. After that, the slide 8 drives the second electric telescopic rod 9 and the laser cutting head 10 to start mobile cutting.

[0025] Example 2: Please refer to Figure 3 - Figure 12 This embodiment further explains Example 1. The reciprocating assembly includes an auxiliary frame 11, a rotating shaft 12 and a first cylinder 14. The auxiliary frame 11 is fixedly installed horizontally on one side of the top end of the fixed frame 7. The rotating shaft 12 is rotatably installed in the middle position of the auxiliary frame 11. The first cylinder 14 is fixedly installed on the outside of one side of the auxiliary frame 11.

[0026] A driving gear 13 is fixedly installed on one side of the bottom end of the rotating shaft 12, and a driving rack 15 is fixedly installed on the output end of the first cylinder 14. One side of the driving gear 13 is meshed with one side of the driving rack 15, and a limiting gear 16 is fixedly installed on the bottom end of the driving gear 13. Two limiting racks 17 are symmetrically meshed and installed on both sides of the limiting gear 16. The two limiting racks 17 are both slidably engaged and installed on the outside of one side of the fixed frame 7.

[0027] The bottom end of each resistance plate 20 is embedded with a mounting groove 22, and the trigger grinding assembly includes several grinding blocks 23 and a second cylinder 32. Several grinding blocks 23 are arranged at equal intervals inside the mounting groove 22, and the second cylinder 32 is fixedly installed on the outside of one side of the resistance plate 20. A heat conducting block 24 is fitted between every two grinding blocks 23, and the heat conducting block 24 is fixedly installed inside the mounting groove 22.

[0028] A first through hole 25 is provided inside one side of the heat conducting block 24, a second through hole 29 is provided inside one side of each grinding block 23 close to the first through hole 25, a third through hole 34 is provided inside the side of the resistance plate 20 close to the second cylinder 32, and a resistance rod 31 is fitted between the first through hole 25, the second through hole 29 and the third through hole 34, and one end of the resistance rod 31 is fixed to the output end of the second cylinder 32.

[0029] A limiting column 26 is slidably installed on both sides of each grinding block 23, one end of the limiting column 26 is fixedly installed on the inner wall of one side of the mounting groove 22, and a stopper 27 is fixedly installed on the other end of the limiting column 26. A compression spring 28 is sleeved through the outside of the limiting column 26 close to the stopper 27, and the two ends of the compression spring 28 are respectively fixedly installed on one side of the stopper 27 and the grinding block 23. An arc-shaped first interference block 30 is fixedly installed on the inner wall of one side of the second through hole 29, and an arc-shaped second interference block 33 is fixedly installed on the outside of the interference rod 31 close to the first interference block 30.

[0030] The blowing assembly includes an air inlet pipe 35 and a guide channel 36. The air inlet pipe 35 is fixedly installed inside one side of the resistance plate 20. The guide channel 36 is opened inside the resistance rod 31. A conductive head 37 is fixedly installed on the outside of one side of the resistance rod 31. One end of the conductive head 37 is connected to one end of the guide channel 36. A first exhaust hole 38 is opened longitudinally through the interior of the second resistance block 33. The first exhaust hole 38 is conductively connected to the interior of one side of the guide channel 36. A second exhaust hole 39 is opened between the first resistance block 30 and the grinding block 23.

[0031] In this embodiment, before cutting, the first cylinder 14 can be controlled to reciprocate and extend. The output end of the first cylinder 14 will drive the driving rack 15 to reciprocate synchronously during the reciprocating motion. The driving rack 15 is engaged with the driving gear 13, driving the rotating shaft 12 to reciprocate in the auxiliary frame 11, thereby causing the limiting gear 16 at the bottom end of the rotating shaft 12 to reciprocate synchronously. The limiting gear 16 is engaged with the limiting racks 17 on both sides, driving the two limiting racks 17 to slide back and forth on the fixed frame 7, thereby driving the bottom limiting cylinder 18, the limiting rod 19 and the contact plate 20 to reciprocate synchronously. At the same time, the second cylinder 3 The resisting rod 31 is pushed to move along the third through hole 34, the first through hole 25, and the second through hole 29. The second resisting block 33 outside the resisting rod 31 contacts the arc surface of the first resisting block 30 inside the grinding block 23, squeezing the grinding block 23 along the limiting column 26 to extend outward from the mounting groove 22. The compression spring 28 is compressed, and the grinding block 23 contacts the surface of the cover plate. In coordination with the reciprocating motion of the resisting plate 20, the rust and oxide layer of the area to be cut are polished away, ensuring efficient absorption of laser energy and heat transfer effect of the heat conducting block 24 during subsequent cutting, thereby reducing fluctuations in cutting quality from the source and ensuring the overall cutting effect.

[0032] It should also be noted that when the resistance rod 31 drives the second resistance block 33 and the first resistance block 30 to be squeezed, the conductive head 37 at one end of the resistance rod 31 is inserted into the air inlet pipe 35, so that during the grinding process, compressed gas is introduced into the air inlet pipe 35, and the gas enters the guide channel 36 inside the resistance rod 31 through the conductive head 37, and then flows into the second exhaust hole 39 between the first resistance block 30 and the grinding block 23 through the first exhaust hole 38 on the second resistance block 33, and finally blows toward the grinding surface in a direction, blowing the impurities generated by grinding away from the cover plate surface in time to avoid secondary pollution, ensure the cleanliness of the area to be cut, improve the stability of the cutting process, and reduce rework caused by surface defects, so that the overall use effect is better.

[0033] It should also be noted that after the grinding is completed, the second cylinder 32 is reset, the resistance rod 31 is withdrawn, and the compression spring 28 rebounds to push the grinding block 23 back into the mounting groove 22 along the limit column 26, and the heat-conducting block 24 is exposed and fits the surface of the cover plate. At this time, the conductive head 37 at one end of the resistance rod 31 is also pulled out from the output end of the air inlet pipe 35 and reset, so that during subsequent cutting, the gas discharged from the air inlet pipe 35 can pass through the first through hole 25 and the second through hole 29, and finally be discharged from the third through hole 34, thereby quickly discharging the cutting heat absorbed by the heat-conducting block 24, avoiding the heat from being transferred deep into the groove wall, and ensuring the overall cutting effect.

[0034] The present invention also provides a cutting process for a laser cutting machine for cutting a machine tool bed, comprising the following steps: S1: When laser cutting an elongated groove on a machine tool bed cover, first control the second electric telescopic rod 9 to retract the laser cutting head 10, then control the first electric telescopic rod 6 to lower the fixing frame 7 and the two contact plates 20, and at the same time cooperate with the setting of the pressing assembly to press the two contact plates 20 tightly against the top surface of the cover where the groove is to be cut, thereby offsetting the thermal expansion force of the groove wall and ensuring the cutting effect; S2: Through the fit of several heat-conducting blocks 24 at the bottom ends of the two abutting plates 20 and the slit area of ​​the cover plate, and the setting of the air blowing assembly, the heat-conducting blocks 24 can quickly dissipate the heat during laser cutting, reducing the heat transfer to the deep groove wall, thereby ensuring the overall cutting accuracy; S3: Before cutting, the reciprocating assembly and the triggering grinding assembly can be controlled as needed to automatically remove rust and oxide layers from the surface of the cover plate to be cut, thereby ensuring the heat transfer effect of the subsequent heat conducting block 24; S4: At the same time, when the reciprocating component and the trigger grinding component are running, the blowing component will be triggered to switch to run synchronously, and the gas can be blown to the grinding surface of the grinding block 23 to clean the impurities generated by grinding and prevent them from adhering to the surface of the machine bed cover.

[0035] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0036] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A laser cutting machine for cutting a machine tool bed, comprising a cutting table (1), a fixing frame (7) arranged at the top end of the cutting table (1), and a laser cutting head (10) arranged at the bottom end of the fixing frame (7), characterized in that: An auxiliary rod (2) is fixedly installed on one side of the top of the cutting table (1), and a screw rod (3) is rotatably installed on the other side of the top of the cutting table (1). A stepper motor (4) is fixedly installed on one side of the cutting table (1), and the output end of the stepper motor (4) is coaxially fixed with one end of the screw rod (3). The outside of the screw rod (3) and the outside of one side of the auxiliary rod (2) are both penetrated by a limit seat (5). The top of the limit seat (5) is longitudinally fixed with a first electric telescopic rod (6), and the output end of the first electric telescopic rod (6) is fixed to one side of the bottom of the fixed frame (7). A reciprocating component is provided at the top of the fixed frame (7). Two contact plates (20) are symmetrically provided on both sides of the bottom of the laser cutting head (10) of the fixed frame (7), and a trigger grinding component and a blowing component are provided inside the contact plate (20). A pressing component is provided at the top of the contact plate (20).

2. The laser cutting machine for cutting a machine tool bed according to claim 1, characterized in that: The screw rod (3) and the limiting seat (5) outside thereof are connected by a through-thread connection, the auxiliary rod (2) and the limiting seat (5) outside thereof are connected by a through-sliding connection, a slide (8) is fixedly installed between the two sides of the bottom end of the fixing frame (7), a second electric telescopic rod (9) is fixedly installed at the bottom end of the slide (8), and the output end of the second electric telescopic rod (9) is fixedly installed with the top end of the laser cutting head (10).

3. The laser cutting machine for cutting a machine tool bed according to claim 1, characterized in that: The reciprocating assembly comprises an auxiliary frame (11), a rotating shaft (12) and a first cylinder (14); the auxiliary frame (11) is fixedly mounted laterally on one side of the top end of the fixed frame (7); the rotating shaft (12) is rotatably mounted in the middle position of the auxiliary frame (11); and the first cylinder (14) is fixedly mounted on the outside of one side of the auxiliary frame (11).

4. The laser cutting machine for cutting a machine tool bed according to claim 3, characterized in that: A driving gear (13) is fixedly installed on one side of the bottom end of the rotating shaft (12), and a driving rack (15) is fixedly installed on the output end of the first cylinder (14). One side of the driving gear (13) is meshed and connected with one side of the driving rack (15). A limiting gear (16) is fixedly installed on the bottom end of the driving gear (13), and two limiting racks (17) are symmetrically meshed and installed on both sides of the limiting gear (16). The two limiting racks (17) are both slidably engaged and installed on the outside of one side of the fixed frame (7).

5. The laser cutting machine for cutting a machine tool bed according to claim 4, characterized in that: The pressing assembly includes a plurality of limiting cylinders (18), and the plurality of limiting cylinders (18) are fixedly installed at equal intervals on the bottom end of a limiting rack (17) on the corresponding side. A limiting rod (19) is longitudinally penetrated and slidably installed inside the bottom end of each limiting cylinder (18). The bottom end of the limiting rod (19) is fixedly installed on the top end of a resistance plate (20) on the corresponding side. A resistance spring (21) is fixedly connected between the top end of the limiting rod (19) and the top wall of the limiting cylinder (18).

6. The laser cutting machine for cutting a machine tool bed according to claim 1, characterized in that: The bottom end of each of the abutting plates (20) is embedded with a mounting groove (22), and the trigger grinding assembly comprises a plurality of grinding blocks (23) and a second cylinder (32), wherein the plurality of grinding blocks (23) are arranged at equal intervals inside the mounting groove (22), and the second cylinder (32) is fixedly mounted on the outside of one side of the abutting plate (20), and a heat conducting block (24) is fitted between every two of the grinding blocks (23), and the heat conducting block (24) is fixedly mounted inside the mounting groove (22).

7. The laser cutting machine for cutting a machine tool bed according to claim 6, characterized in that: A first through hole (25) is provided inside one side of the heat conducting block (24), a second through hole (29) is provided inside one side of each grinding block (23) close to the first through hole (25), a third through hole (34) is provided inside the side of the resistance plate (20) close to the second cylinder (32), a resistance rod (31) is provided between the first through hole (25), the second through hole (29) and the third through hole (34), and one end of the resistance rod (31) is fixed to the output end of the second cylinder (32).

8. The laser cutting machine for cutting a machine tool bed according to claim 7, characterized in that: A limiting column (26) is slidably installed inside both sides of each grinding block (23), one end of the limiting column (26) is fixedly installed on the inner wall of one side of the mounting groove (22), and a stopper (27) is fixedly installed on the other end of the limiting column (26). A compression spring (28) is sleeved through the outer side of the limiting column (26) close to the stopper (27), and the two ends of the compression spring (28) are respectively fixedly installed on one side of the stopper (27) and the grinding block (23). An arc-shaped first resistance block (30) is fixedly installed on the inner wall of one side of the second through hole (29), and an arc-shaped second resistance block (33) is fixedly installed on the outer side of the resistance rod (31) close to the first resistance block (30).

9. The laser cutting machine for cutting a machine tool bed according to claim 1, characterized in that: The blowing assembly includes an air inlet pipe (35) and a guide channel (36), wherein the air inlet pipe (35) is fixedly installed inside one side of the resistance plate (20), the guide channel (36) is opened inside the resistance rod (31), a conductive head (37) is fixedly installed outside one side of the resistance rod (31), one end of the conductive head (37) is conductively connected to one end of the guide channel (36), a first exhaust hole (38) is longitudinally opened inside the second resistance block (33), the first exhaust hole (38) is conductively connected to the inside of one side of the guide channel (36), and a second exhaust hole (39) is opened between the first resistance block (30) and the grinding block (23).

10. A cutting process of a laser cutting machine for cutting a machine tool bed, according to any one of claims 1 to 9, characterized in that: The steps include: S1: When performing laser cutting of an elongated groove on a machine tool bed cover, firstly, the second electric telescopic rod (9) is controlled to drive the laser cutting head (10) to retract, and then the first electric telescopic rod (6) is controlled to drive the fixing frame (7) and the two contact plates (20) to descend, and at the same time, the setting of the pressing component is coordinated, so that the two contact plates (20) are pressed and fitted with the top surface of the cover where the groove is to be cut, thereby offsetting the thermal expansion force of the groove wall and ensuring the cutting effect; S2: Through the fitting of a plurality of heat-conducting blocks (24) at the bottom ends of the two abutting plates (20) with the slit area of ​​the cover plate, and the setting of the air blowing assembly, the heat-conducting blocks (24) can quickly conduct heat away from the cutting process during laser cutting, thereby reducing the heat transfer to the deep groove of the groove wall and ensuring the overall cutting accuracy; S3: Before cutting, the reciprocating assembly and the triggering grinding assembly can be controlled as needed to automatically treat the rust and oxide layer on the surface of the cover plate to be cut, thereby ensuring the heat transfer effect of the subsequent heat conducting block (24); S4: At the same time, when the reciprocating assembly and the trigger grinding assembly are in operation, the blowing assembly will be triggered to switch to operation, and the gas can be blown to the grinding surface of the grinding block (23) to clean the impurities generated by grinding and prevent them from adhering to the surface of the machine bed cover.

Images