High-precision five-axis cutting equipment for carbon fiber sheets

Abstract

The utility model relates to the technical field of laser processing, in particular to high-precision five-axis cutting equipment for carbon fiber sheets, which comprises a rack, a five-axis motion platform, a laser cutting device, a nitrogen injection device and a control system, the five-axis moving platform is located below the laser cutting device and used for driving a part to move so that the laser cutting device can cut different positions of the part, and the nitrogen spraying device is fixed to the rack, connected with the laser cutting device and used for spraying nitrogen to the cutting position of the part when the laser cutting device cuts the part. The five-axis motion platform, the laser cutting device and the nitrogen injection device are all in signal connection with the control system, the movement range of parts is wide and flexible, precise cutting of complex parts is achieved, the effect that the cutting portions are cooled through nitrogen during part cutting is achieved, and it is guaranteed that the cutting faces of the parts formed by carbon fiber sheets are smooth and free of burrs.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of laser processing, more particularly, it relates to a high-precision five-axis cutting device for carbon fiber sheet. BACKGROUND

[0002] Carbon fiber sheet has been widely used in many industries due to its excellent mechanical properties and lightweight characteristics, such as aerospace, automotive industry, sports equipment, etc. The carbon fiber sheet is usually combined with epoxy resin for curing to form parts. The parts formed by the carbon fiber sheet are complex and diverse, and some parts need to be cut for assembly.

[0003] In related technologies, the parts formed by the carbon fiber sheet are generally cut by laser. Laser cutting is a cutting method that heats the material to melting or vaporization temperature by high-energy laser beam. In the laser cutting process, the energy of the laser beam is concentrated on the surface of the material, which causes the local temperature of the material to rise sharply, and the carbon fiber material is easily damaged and deformed. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the problem of heat damage and deformation of carbon fiber material in related technologies when cutting parts formed by carbon fiber sheet by laser, the present application provides a high-precision five-axis cutting device for carbon fiber sheet.

[0005] A high-precision five-axis cutting device for carbon fiber sheet, comprising a rack, a five-axis motion platform, a laser cutting device, a nitrogen injection device, and a control system. The laser cutting device is fixed on the rack for cutting parts. The five-axis motion platform is below the laser cutting device for driving the movement of the parts to make the laser cutting device cut different positions of the parts. The nitrogen injection device is fixed on the rack and connected with the laser cutting device for injecting nitrogen to the cutting part of the parts when the laser cutting device cuts the parts. The five-axis motion platform, the laser cutting device, and the nitrogen injection device are all connected with the control system.

[0006] Preferably, the laser cutting device comprises a laser emitter, a laser cutting head, the laser cutting head comprises an upper lens seat, a lower lens seat, a connecting pipe, an adjusting assembly, the upper lens seat is hollow inside and provided with a first lens inside, the upper lens seat is fixed on the laser emitter and the first lens is in communication with the output end of the laser emitter, the connecting pipe is fixedly connected with the upper lens seat and in communication with the first lens, the lower lens seat is provided with a movable hole matching the outer diameter of the connecting pipe at the top, the lower lens seat is movably connected with the connecting pipe by sleeving the movable hole into the outer wall of the connecting pipe, the lower lens seat is provided with a second lens at the bottom of the movable hole, the first lens and the second lens are in communication through the connecting pipe, the lower lens seat is provided with a jet hole in communication with the first lens at the bottom, the side wall of the lower lens seat is provided with a connecting nozzle in communication with the jet hole, the connecting nozzle is connected with the nitrogen gas jetting device, the adjusting assembly is fixed on the laser emitter and connected with the lower lens seat for adjusting the distance between the lower lens seat and the upper lens seat, and the laser emitter is signal connected with the control system.

[0007] Preferably, the adjusting assembly comprises a mounting seat, a threaded adjusting rod, and a threaded seat, the mounting seat is fixedly connected with the laser emitter, the threaded adjusting rod is rotatably connected with the mounting seat, the mounting seat is provided with a sliding rail parallel to the threaded adjusting rod, a sliding block is slidably arranged on the sliding rail, the threaded seat is fixed on the sliding block and fixedly connected with the lower lens seat, and the threaded adjusting rod is screwedly connected with the threaded seat.

[0008] Preferably, the nitrogen gas jetting device comprises a nitrogen gas storage tank, a nitrogen gas compressor, and a gas guide pipe, the nitrogen gas storage tank is connected with the input end of the nitrogen gas compressor through the gas guide pipe to supply nitrogen gas into the nitrogen gas compressor, the output end of the nitrogen gas compressor is provided with a gas supply pipe, the gas supply pipe is connected with the connecting nozzle, and the nitrogen gas compressor is signal connected with the control system.

[0009] Preferably, the five-axis motion platform comprises an X-axis linear module, a Y-axis linear module, a Z-axis linear module, an A-axis rotary table, a C-axis rotary table, and a mounting jig, wherein the direction perpendicular to the horizontal ground is parallel to the Z-axis direction, the X-axis linear module is connected with the Y-axis linear module for driving the Y-axis linear module to reciprocate along the Y-axis direction, the Y-axis linear module is connected with the Z-axis linear module for driving the Z-axis linear module to reciprocate along the Y-axis direction, a connecting seat is arranged on the Z-axis linear module and driven by the Z-axis linear module to reciprocate along the Z-axis direction, the A-axis rotary table is rotatably arranged on the connecting seat and the rotation axis of the A-axis rotary table is parallel to the X-axis, a first rotation driving member is arranged on the connecting seat and connected with the A-axis rotary table for driving the A-axis rotary table to rotate, an extension arm is arranged on the end surface of the A-axis rotary table, the C-axis rotary table is rotatably connected with the extension arm and the rotation axis of the C-axis rotary table is parallel to the Z-axis, a second rotation driving member is arranged on the extension arm and connected with the C-axis rotary table for driving the C-axis rotary table to rotate, and the mounting jig is fixed to the top end surface of the C-axis rotary table for fixing the parts.

[0010] Preferably, a marble platform parallel to the horizontal ground is arranged on the rack, and the five-axis motion platform is arranged on the top surface of the marble platform.

[0011] The present application has the following beneficial technical effects:

[0012] 1. The five-axis motion platform drives the movement of the parts to achieve five-directional movement freedom of the parts, and the parts have a wide and flexible movement range, which facilitates the movement of the parts along the cutting track to obtain the cutting of the laser cutting device. The five-axis motion platform realizes precise cutting of complex parts. During the cutting of the parts, the nitrogen gas is sprayed to the cutting position of the parts by the nitrogen gas spraying device to provide efficient cooling, reduce the heat-affected zone during cutting, and reduce the smoke and thermal deformation generated during the cutting process, so as to ensure that the cutting surface of the carbon fiber sheet forming part is smooth and free of burrs.

[0013] 2. The laser emitter emits laser, the laser is focused by the first lens and the second lens to form a cutting laser beam, the laser beam is shot on the parts to realize the cutting of the parts, the distance between the lower lens seat and the upper lens seat is adjusted by the adjusting mechanism to realize focusing, and the focal point of the laser beam is accurately positioned to realize the best laser performance and effect.

[0014] 3. By setting the five-axis motion platform on a marble platform, marble, with its low coefficient of expansion, can adapt to changes in ambient temperature, ensuring that the five-axis motion platform maintains stable accuracy over a long period of time. Furthermore, marble can effectively absorb vibrations generated during processing, reducing the impact on cutting accuracy. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a high-precision five-axis cutting device for carbon fiber sheets according to this embodiment.

[0016] Figure 2 This is a schematic diagram of the structure of a high-precision five-axis cutting device for carbon fiber sheets after the machine cover is removed, according to this embodiment.

[0017] Figure 3 This is a schematic diagram of the laser cutting device in this embodiment.

[0018] Figure 4 This is a schematic diagram of the five-axis motion platform structure in this embodiment.

[0019] Reference numerals: 1. Frame; 11. Base frame; 12. Cover; 13. Marble platform; 14. Gantry frame; 2. Five-axis motion platform; 21. X-axis linear module; 22. Y-axis linear module; 23. Z-axis linear module; 231. Connecting seat; 2311. First rotation drive component; 24. A-axis rotary table; 241. Extension arm; 2411. Second rotation drive component; 25. C-axis rotary table; 26. Mounting fixture; 3. Laser cutting device; 31. Laser emitter; 32. Laser cutting head; 321. Upper lens mount; 322. Lower lens mount; 3221. Connecting nozzle; 323. Connecting pipe; 324. Adjustment component; 3241. Mounting seat; 3242. Threaded adjusting rod; 3243. Threaded seat; 3244. Slide rail; 3245. Slider; 4. Nitrogen injection device; 5. Control system. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] Reference Figure 1 and Figure 2The application discloses a high-precision five-axis cutting equipment for carbon fiber sheet, which comprises a frame 1, a five-axis movement platform 2, a laser cutting device 3, a nitrogen injection device 4 and a control system 5. The frame 1 comprises a chassis 11 and a cover 12 arranged on the chassis 11. The five-axis movement platform 2, the laser cutting device 3 and the nitrogen injection device 4 are all protected by being arranged in the cover 12. A marble platform 13 parallel to the horizontal ground is arranged on the top surface of the chassis 11. The five-axis movement platform 2 is fixed on the marble platform 13 and is used for driving the movement of a part. A portal frame 14 is fixed on the marble platform 13. The laser cutting device 3 is fixed on the crossbeam of the portal frame 14 and is located above the five-axis movement platform 2. The laser cutting device 3 emits laser to cut the part at each cutting point of the part by driving the movement of the part through the five-axis movement platform 2 so that the part moves along the cutting track. The nitrogen injection device 4 is connected with the laser cutting device 3 and is used for injecting nitrogen to the cutting position of the part when the laser cutting device 3 cuts the part. When the laser cuts the part, the nitrogen injection device 4 injects nitrogen to the cutting position of the part, thereby providing efficient cooling, reducing the heat affected zone during cutting, reducing the smoke and heat deformation generated during cutting, and ensuring that the cutting surface of the part formed by the carbon fiber sheet is smooth and free of burrs.

[0022] Reference Figure 3, further, the laser cutting device 3 includes a laser emitter 31 and a laser cutting head 32, the laser cutting head 32 includes an upper lens seat 321, a lower lens seat 322, a connecting pipe 323 and an adjusting assembly 324, the upper lens seat 321 is hollow inside and is provided with a first lens inside, the upper lens seat 321 is fixed on the laser emitter 31 and the first lens is communicated with the output end of the laser emitter 31, the connecting pipe 323 is fixedly connected with the upper lens seat 321 and is communicated with the first lens, the lower lens seat 322 is provided with a movable hole matching the outer diameter of the connecting pipe 323 at the top, the lower lens seat 322 is movably connected with the connecting pipe 323 by sleeving the outer wall of the connecting pipe 323 through the movable hole, the lower lens seat 322 is provided with a second lens at the bottom of the movable hole, the first lens and the second lens are communicated through the connecting pipe 323, the lower lens seat 322 is provided with a spray hole communicated with the first lens at the bottom, and the side wall of the lower lens seat 322 is provided with a connecting nozzle 3221 communicated with the spray hole, the laser emitter 31 is fixed on the beam of the gantry 14, and the direction of the laser emitted by the laser emitter 31 is parallel to the horizontal ground, the connecting pipe 323 is arranged vertically to the horizontal ground, the first lens is arranged obliquely in the upper lens seat 321 to reflect the laser emitted by the laser emitter 31 to the second lens, the laser is focused by the second lens and then shot into the spray hole and from the spray hole to the part to cut the part, the laser emitter 31 is selected as a low-power cold light ultraviolet nanosecond laser, which can output stable and fine laser beams, has strong penetration and precise cutting ability, and the power is adjustable, which can adapt to the processing needs of carbon fiber materials of different thicknesses, ensures that the heat affected zone is minimum in the cutting process, and avoids thermal damage and deformation of the carbon fiber material.

[0023] With reference to Figure 3 , the connecting nozzle 3221 is used to be connected with the nitrogen gas spraying device 4, nitrogen gas is input into the connecting nozzle 3221 through the nitrogen gas spraying device 4 and sprayed to the cutting position of the part through the spray hole, high-efficiency cooling is provided for the part, the heat affected zone during cutting of the part is reduced, the smoke and thermal deformation generated during cutting are reduced, the cutting surface of the carbon fiber sheet forming part is smooth and without burrs, the adjusting assembly 324 is fixed on the laser emitter 31 and connected with the lower lens seat 322 for adjusting the distance between the lower lens seat 322 and the upper lens seat 321, focusing is realized, and the focal point of the laser beam is accurately positioned, so that the best laser performance and effect are realized.

[0024] With reference to Figure 3Further, the adjusting assembly 324 comprises a mounting base 3241, a threaded adjusting rod 3242, and a threaded base 3243. The mounting base 3241 is connected with the laser emitter 31. The threaded adjusting rod 3242 is rotationally connected with the mounting base 3241 and is arranged perpendicularly to the horizontal ground. The mounting base 3241 is provided with a sliding rail 3244 parallel to the threaded adjusting rod 3242. A sliding block 3245 is slidingly arranged on the sliding rail 3244. The threaded base 3243 is fixed on the sliding block 3245 and is connected with the lower lens base 322. The threaded adjusting rod 3242 is threadedly connected with the threaded base 3243. A rotating handle is arranged at the top end of the threaded adjusting rod 3242. The threaded adjusting rod 3242 is rotated by rotating the rotating handle. The threaded base 3243 is moved along the length of the threaded adjusting rod 3242. The lower lens base 322 is moved along the length of the connecting pipe 323. The distance between the first lens and the second lens is adjusted. The focusing is realized.

[0025] With reference to Figure 2 and Figure 3 Further, the nitrogen injection device 4 (not shown in the figure) comprises a nitrogen storage tank, a nitrogen compressor, and a gas guide pipe. The nitrogen storage tank is connected with the input end of the nitrogen compressor through the gas guide pipe to supply nitrogen into the nitrogen compressor. The output end of the nitrogen compressor is provided with a gas supply pipe connected with the connecting nozzle 3221. The output end of the nitrogen compressor is provided with an adjusting valve. The nitrogen is compressed by the nitrogen compressor and is released to be supplied into the connecting nozzle 3221 and is sprayed from the injection hole to the parts. The adjusting valve is used to adjust the flow and pressure of the nitrogen to adapt to different cutting positions.

[0026] With reference to Figure 4, further, the five-axis motion platform 2 includes an X-axis linear module 21, a Y-axis linear module 22, a Z-axis linear module 23, an A-axis rotary table 24, a C-axis rotary table 25, and a mounting jig 26, in a direction perpendicular to the horizontal ground, the direction of the parallel Z-axis, the X-axis linear module 21 is fixed to the top surface of the marble platform 13, the X-axis linear module 21 is connected with the Y-axis linear module 22 for driving the Y-axis linear module 22 to reciprocate along the Y-axis direction, the Y-axis linear module 22 is connected with the Z-axis linear module 23 for driving the Z-axis linear module 23 to reciprocate along the Y-axis direction, the Z-axis linear module 23 is provided with a connecting seat 231 driven thereon, the Z-axis linear module 23 drives the connecting seat 231 to reciprocate along the Z-axis direction, the X-axis linear module 21, the Y-axis linear module 22, and the Z-axis linear module 23 are all driven by high-speed servo motors to rotate the screws to realize the movement of the threaded seats 3243 along the length direction of the screws to achieve precise displacement and high-speed movement, the A-axis rotary table 24 is rotationally arranged on the connecting seat 231, and the rotation axis of the A-axis rotary table 24 is parallel to the X-axis, the connecting seat 231 is provided with a first rotation driving member 2311 (not shown in the figure), the first rotation driving member 2311 is connected with the A-axis rotary table 24 for driving the A-axis rotary table 24 to rotate, the first rotation driving member 2311 is a DD motor, the end surface of the A-axis rotary table 24 is provided with an extension arm 241, the C-axis rotary table 25 is rotationally connected with the extension arm 241, and the rotation axis of the C-axis rotary table 25 is parallel to the Z-axis, the extension arm 241 is provided with a second rotation driving member 2411 (not shown in the figure), the second rotation driving member 2411 is connected with the C-axis rotary table 25 for driving the C-axis rotary table 25 to rotate, the second rotation driving member 2411 is a DD motor, and the mounting jig 26 is fixed to the top end surface of the C-axis rotary table 25 for fixing the parts, during the cutting process of the parts, the X-axis linear module 21 drives the Y-axis linear module 22 to move along the X-axis direction, driving the Z-axis linear module 23, the A-axis rotary table 24, the C-axis rotary table 25, and the mounting jig 26 to move along the X-axis direction, realizing the movement of the parts along the X-axis direction, the Y-axis linear module 22 drives the Z-axis linear module 23 to move along the Y-axis direction, driving the A-axis rotary table 24, the C-axis rotary table 25, and the mounting jig 26 to move along the Y-axis direction, realizing the movement of the parts along the Y-axis direction, the Z-axis linear module 23 drives the connecting seat 231 to reciprocate along the Z-axis direction, driving the A-axis rotary table 24, the C-axis rotary table 25, and the mounting jig 26 to move along the Z-axis direction, realizing the movement of the parts along the Z-axis direction, the first rotation driving member 2311 drives the A-axis rotary table 24 to rotate, driving the C-axis rotary table 25 and the mounting jig 26 to rotate, realizing the rotation of the parts around the X-axis direction, the second driving member drives the C-axis rotary table 25 to rotate, driving the mounting jig 26 to rotate, realizing the rotation of the parts around the Z-axis direction, the parts have five directions of activity freedom, making the activity range of the parts wider and more flexible, through the activity of the parts, the parts move along the cutting track to obtain the cutting of the laser,The wide range of parts activity makes it have more cutting angle to adapt more complex parts.

[0027] The laser emitter 31, the nitrogen compressor, the X-axis linear module 21, the Y-axis linear module 22, the Z-axis linear module 23, the first rotating driving member 2311 and the second rotating driving member 2411 are all signal connected with the control system 5, and are automatically operated by the program control of the control system 5, so that the automation degree is high, the automatic parts are moved and cut according to the preset cutting path, and the efficiency is high.

[0028] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A high-precision five-axis cutting device for carbon fiber sheets, characterized in that: The system includes a frame, a five-axis motion platform, a laser cutting device, a nitrogen injection device, and a control system. The laser cutting device is fixed on the frame and used to cut parts. The five-axis motion platform is located below the laser cutting device and is used to drive the parts to move so that the laser cutting device can cut different positions on the parts. The nitrogen injection device is fixed on the frame and connected to the laser cutting device to inject nitrogen gas onto the cutting area of ​​the parts when the laser cutting device is cutting the parts. The five-axis motion platform, the laser cutting device, and the nitrogen injection device are all connected to the control system via signals.

2. The high-precision five-axis cutting equipment for carbon fiber sheets according to claim 1, characterized in that: The laser cutting device includes a laser emitter and a laser cutting head. The laser cutting head includes an upper lens mount, a lower lens mount, a connecting tube, and an adjustment assembly. The upper lens mount is hollow and houses a first lens. The upper lens mount is fixed to the laser emitter, and the first lens is connected to the output end of the laser emitter. The connecting tube is fixed to the upper lens mount and communicates with the first lens. The top of the lower lens mount has a movable hole matching the outer diameter of the connecting tube. The lower lens mount is movably connected to the connecting tube by fitting into the outer wall of the connecting tube through the movable hole. A second lens is located at the bottom of the lower lens mount through the movable hole. The first lens and the second lens are connected through the connecting tube. The bottom of the lower lens mount has a spray hole communicating with the first lens. The side wall of the lower lens mount has a connecting nozzle communicating with the spray hole. The connecting nozzle is connected to the nitrogen spraying device. The adjustment assembly is fixed to the laser emitter and connected to the lower lens mount for adjusting the distance between the lower lens mount and the upper lens mount. The laser emitter is signal-connected to the control system.

3. The high-precision five-axis cutting equipment for carbon fiber sheets according to claim 2, characterized in that: The adjustment assembly includes a mounting base, a threaded adjusting rod, and a threaded seat. The mounting base is fixedly connected to the laser emitter. The threaded adjusting rod is rotatably connected to the mounting base. The mounting base is provided with a slide rail parallel to the threaded adjusting rod. A slider is slidably disposed on the slide rail. The threaded seat is fixed on the slider and fixedly connected to the lower lens seat. The threaded adjusting rod is threadedly connected to the threaded seat.

4. The high-precision five-axis cutting equipment for carbon fiber sheets according to claim 2, characterized in that: The nitrogen injection device includes a nitrogen storage tank, a nitrogen compressor, and a gas delivery pipe. The nitrogen storage tank is connected to the input end of the nitrogen compressor through the gas delivery pipe to supply nitrogen into the nitrogen compressor. The output end of the nitrogen compressor is provided with a gas supply pipe, which is connected to the connector. The nitrogen compressor is connected to the control system for signal connection.

5. The high-precision five-axis cutting equipment for carbon fiber sheets according to claim 1, characterized in that: The five-axis motion platform includes an X-axis linear module, a Y-axis linear module, a Z-axis linear module, an A-axis rotary table, a C-axis rotary table, and a mounting fixture. The direction perpendicular to the horizontal ground is considered parallel to the Z-axis. The X-axis linear module is connected to the Y-axis linear module to drive it to reciprocate along the Y-axis. The Y-axis linear module is connected to the Z-axis linear module to drive it to reciprocate along the Y-axis. A connecting seat is driven onto the Z-axis linear module, and the Z-axis linear module drives the connecting seat to reciprocate along the Z-axis. The A-axis rotary table is rotatably mounted on the connecting seat, and the rotation axis of the A-axis rotary table is parallel to the X-axis. The connecting seat is provided with a first rotation drive component, which is connected to the A-axis rotary table to drive the A-axis rotary table to rotate. An extension arm is provided on the end face of the A-axis rotary table. The C-axis rotary table is rotatably connected to the extension arm, and the rotation axis of the C-axis rotary table is parallel to the Z-axis. A second rotation drive component is provided on the extension arm, which is connected to the C-axis rotary table to drive the C-axis rotary table to rotate. The mounting fixture is fixed to the top surface of the C-axis rotary table to fix the parts. The X-axis linear module, Y-axis linear module, Z-axis linear module, first rotation drive component, and second rotation drive component are all connected to the control system signal.

6. The high-precision five-axis cutting equipment for carbon fiber sheets according to claim 1, characterized in that: The frame is equipped with a marble platform parallel to the horizontal ground, and the five-axis motion platform is located on the top surface of the marble platform.

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