Diamond cutter laser processing equipment

Abstract

The utility model discloses laser machining equipment for a diamond cutter. The laser machining equipment comprises a lathe bed, a portal frame, an ultrashort pulse laser, a nanosecond pulse laser, an X-axis ultrashort pulse light path, a Z-axis ultrashort pulse light path, a light path switching device, a laser lens assembly, an X-axis moving mechanism, a Y-axis moving mechanism, a Z-axis moving mechanism and an A / C-axis rotary table. The double-laser-source laser processing device is reasonable in structural design, the double-laser-source design is adopted, laser beams of the ultrashort pulse laser and the nanosecond pulse laser can be transmitted to the laser lens assembly by switching different light paths through the light path switching device, and then the laser beams are focused on a diamond cutter through the laser lens assembly to be processed. Different types of lasers can be selected according to machining requirements, equipment is allowed to be switched among different laser machining modes, for example, nanosecond pulse laser beams are used for removing most of excess materials, ultrashort pulse laser beams are used for finishing cutting edges of diamond cutters, and machining flexibility, machining efficiency and machining effect are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of processing laser machines, and particularly relates to a laser processing device for diamond tools. Background Art

[0002] Laser processing is to irradiate a laser beam onto the surface of a workpiece, and use the laser with high energy density to cut, melt materials and change the surface properties of objects. At present, laser processing has been widely applied in many industries such as aviation, aerospace, navigation, automobile, semiconductor, etc.

[0003] A laser processing device is a combination of laser processing technology and a numerical control machine tool, which uses a laser to replace a tool to process a workpiece. For example, the utility model patent with the name of "Five-axis Laser Processing Device" and the patent number of "202221694952.4" applied by the applicant on July 4, 2022 discloses a five-axis laser processing device, which includes a machine base, a marble bottom plate, a gantry, an X-axis moving mechanism, a Y-axis moving mechanism, a Z-axis moving mechanism, a five-axis turntable and a laser head assembly. Through the cooperation of the X-axis moving mechanism, the Y-axis moving mechanism, the Z-axis moving mechanism, the five-axis turntable and the laser head assembly, the purpose of laser processing diamond tools is achieved, but it only has one type of laser processing. With the increasingly wide application of picosecond lasers, their advantages in the manufacturing process are increasingly recognized. With the characteristics of a picosecond-level pulse width, an ultra-short pulse laser brings almost negligible thermal damage to the material during the processing. Therefore, the benefit in the diamond tool processing is that the durability of the cutting edge will be significantly improved, and the service life of the diamond tool will be greatly increased. At the same time, due to its ultra-short pulse width, the processing efficiency is also significantly lower than that of other types of lasers. Therefore, it is necessary to develop a laser processing device that can combine and switch between a nanosecond-level pulse width laser and an ultra-short pulse width laser to improve the processing efficiency and effect at the same time. Summary of the Utility Model

[0004] Aiming at the above deficiencies, the purpose of the utility model is to provide a laser processing device for diamond tools with a reasonable structural design, which reduces the load of the Z-axis moving mechanism and improves the working stability.

[0005] To achieve the above purpose, the technical solution provided by the utility model is:

[0006] A diamond tool laser processing device, which includes a machine body, a gantry, an X-axis moving mechanism, a Z-axis moving mechanism, an ultra-short pulse laser, a nanosecond pulse laser, an X-axis ultra-short pulse optical path, a Z-axis ultra-short pulse optical path, an optical path switching device, and a laser lens assembly. The gantry is arranged on the machine body, the X-axis moving mechanism is arranged on the gantry, the Z-axis moving mechanism is arranged on the X-axis moving mechanism, the nanosecond pulse laser, the optical path switching device, and the laser lens assembly are arranged on the Z-axis moving mechanism. Wherein, the laser lens assembly is connected to the laser output port of the optical path switching device, and the nanosecond pulse laser is connected to the first laser input port of the optical path switching device; the lower end of the Z-axis ultra-short pulse optical path is connected to the second laser input port of the optical path switching device, and the upper end extends to the top position of the Z-axis moving mechanism. The ultra-short pulse laser is arranged on the gantry. One end of the X-axis ultra-short pulse optical path is connected to the ultra-short pulse laser, and the other end extends to one side of the position of the Z-axis moving mechanism and is connected to the upper end of the Z-axis ultra-short pulse optical path.

[0007] As a preferred solution of the present utility model, the first laser input port and the laser output port on the optical path sealing box are located on the same vertical axis, with reasonable structural design and convenient optical path switching.

[0008] As a preferred solution of the present utility model, the optical path switching device includes an optical path sealing box, a fixed reflecting mirror, a moving reflecting mirror, and a linear moving mechanism. The second laser input port is located at the top of one end of the optical path sealing box. The fixed reflecting mirror is arranged in the optical path sealing box corresponding to the position of the second laser input port. The moving reflecting mirror is arranged in the optical path sealing box corresponding to the position of the fixed reflecting mirror through the linear moving mechanism and is driven by the linear moving mechanism to move to the position between the first laser input port and the laser output port. By driving the movement of the moving reflecting mirror through the linear moving mechanism, the switching of the laser beam is realized, improving the processing efficiency and flexibility.

[0009] As a preferred solution of the present utility model, the linear moving mechanism includes a driving motor, a base, and a sliding seat. The sliding seat is movably arranged on the base through a slide rail. The driving motor drives the sliding seat to make a linear reciprocating motion on the slide rail through a screw pair, driving the moving reflecting mirror to move, with high movement accuracy and fast response speed.

[0010] As a preferred solution of the utility model, the X-axis ultrashort pulse optical path includes an X-axis left box, an X-axis right box, an X-axis accordion cover, an X-axis left reverse mirror and an X-axis right reverse mirror. The X-axis left box is provided with an X-axis left laser inlet and an X-axis left laser outlet, and the X-axis right box is provided with an X-axis right laser inlet and an X-axis right laser outlet. The X-axis left laser inlet is connected to the ultrashort pulse laser, and the X-axis left reverse mirror is arranged in the X-axis left box at positions corresponding to the X-axis left laser inlet and the X-axis left laser outlet, and the X-axis right reverse mirror is arranged in the X-axis right box at positions corresponding to the X-axis right laser inlet and the X-axis right laser outlet. One end of the X-axis accordion cover is connected to the X-axis left laser outlet, and the other end is connected to the X-axis right laser inlet. The X-axis accordion cover helps to protect the laser from external interference during transmission in the X-axis direction, improves processing stability and safety, and facilitates maintenance and adjustment of the optical path direction.

[0011] As a preferred solution of the utility model, the Z-axis ultrashort pulse optical path includes a Z-axis accordion cover, the upper end of the Z-axis accordion cover is connected to the X-axis right laser outlet, and the lower end is connected to the second laser input port. The Z-axis accordion cover helps to protect the laser from external interference during transmission in the Z-axis direction, ensures the precise transmission of the laser, and ensures the effective transfer of laser energy and continuous coverage of the processing area.

[0012] As a preferred solution of the utility model, it is characterized in that the laser lens assembly comprises a first reverse mirror box, a second reverse mirror box and a focusing lens connected in sequence. The laser beam is focused onto the diamond tool through the combination of the first reverse mirror box, the second reverse mirror box and the focusing lens.

[0013] As a preferred solution of the utility model, the bed is provided with a Y-axis moving mechanism, and the Y-axis moving mechanism is provided with an A / C-axis turntable driven by the Y-axis moving mechanism. The A / C-axis turntable includes a mounting seat, an A-axis direct-drive motor, an A-axis turntable, a C-axis direct-drive motor and a fixture, the A-axis direct-drive motor is mounted on the mounting seat, the A-axis turntable is arranged on the drive shaft of the A-axis direct-drive motor, the C-axis direct-drive motor is mounted on the A-axis turntable, and the fixture is arranged on the drive shaft of the C-axis direct-drive motor. By cooperating with the Y-axis moving mechanism and the A / C-axis turntable, the degree of freedom of processing is increased, more complex tool processing requirements can be achieved, and the processing capacity is greatly expanded.

[0014] The beneficial effects of the present utility model are as follows: The structure of the present utility model is reasonably designed. With a dual-laser source design, the laser beams of the ultra-short pulse laser and the nanosecond pulse laser can be transmitted to the laser lens assembly through different optical paths by means of an optical path switching device, and then focused on the diamond tool by the laser lens assembly for processing. Different types of lasers can be selected according to processing requirements, allowing the device to switch between different laser processing modes. For example, the nanosecond pulse laser beam is used to remove most of the surplus material, and the ultra-short pulse laser beam is used to finely machine the edge of the diamond tool, greatly improving the processing flexibility, efficiency and processing effect.

[0015] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments. Description of the Drawings

[0016] Figure 1 is a three-dimensional structural schematic diagram of the present utility model.

[0017] Figure 2 is a structural schematic diagram of the X-axis ultra-short pulse optical path in the present utility model.

[0018] Figure 3 is a structural schematic diagram of the optical path switching device in the present utility model.

[0019] Figure 4 is the structural schematic when the present utility model is working Figure 1 .

[0020] Figure 5 is the structural schematic when the present utility model is working Figure 2 . Detailed Embodiments

[0021] See Figures 1 to 5 , a diamond tool laser processing device provided in this embodiment includes a bed 1, a gantry 2, an ultra-short pulse laser 3, a nanosecond pulse laser 4, an X-axis ultra-short pulse optical path 5, a Z-axis ultra-short pulse optical path 6, an optical path switching device 7, a laser lens assembly 8, an X-axis moving mechanism 9, a Y-axis moving mechanism 10, a Z-axis moving mechanism 11 and an A / C-axis turntable 12.

[0022] Both the gantry 2 and the bed 1 are preferably made of marble. The gantry 2 is arranged on the bed 1, the X-axis moving mechanism 9 is arranged on the gantry 2, and the Z-axis moving mechanism 11 is arranged on the X-axis moving mechanism 9.

[0023] The nanosecond pulse laser 4, the optical path switching device 7 and the laser lens assembly 8 are arranged on the Z-axis moving mechanism 11. The laser lens assembly 8 is connected to the laser output port 713 of the optical path switching device 7. The laser lens assembly 8 includes a first reverse mirror box 81, a second reverse mirror box 82 and a focusing lens 83 that are connected in sequence. The nanosecond pulse laser 4 is connected to the first laser input port 711 of the optical path switching device 7.

[0024] See Figure 3 , the optical path switching device 7 includes an optical path sealing box 71, a fixed reverse mirror 72, a moving reverse mirror 73 and a linear moving mechanism 74. The second laser input port 712 is located at the top left end of the optical path sealing box 71. The fixed reverse mirror 72 is arranged in the optical path sealing box 71 corresponding to the position of the second laser input port 712. The moving reverse mirror 73 is arranged in the optical path sealing box 71 corresponding to the position of the fixed reverse mirror 72 through the linear moving mechanism 74 and is driven by the linear moving mechanism 74 to move to a position between the first laser input port 711 and the laser output port 713. Preferably, the first laser input port 711 and the laser output port 713 on the optical path sealing box 71 are on the same vertical axis and are both located at the right end position of the optical path sealing box 71. In this embodiment, the linear moving mechanism 74 includes a driving motor, a base and a sliding seat. The sliding seat is movably arranged on the base through a slide rail. The driving motor drives the sliding seat to make a linear reciprocating motion on the slide rail through a screw pair, driving the moving reverse mirror 73 to move, with high motion accuracy and fast response speed. In other embodiments, the linear moving mechanism 74 can also be a linear motor or the like. By driving the movement of the moving reverse mirror 73 through the linear moving mechanism 74, the switching of the laser beam is realized, improving the processing efficiency and flexibility.

[0025] The lower end of the Z-axis ultrashort pulse optical path 6 is connected to the second laser input port 712 of the optical path switching device 7, and the upper end extends to the top position of the Z-axis moving mechanism 11. The ultrashort pulse laser 3 is arranged on the gantry 2, one end of the X-axis ultrashort pulse optical path 5 is connected to the ultrashort pulse laser 3, and the other end extends to a side position of the Z-axis moving mechanism 11 and is connected to the upper end of the Z-axis ultrashort pulse optical path 6. Specifically, the X-axis ultrashort pulse optical path 5 includes an X-axis left box 51, an X-axis right box 52, an X-axis accordion cover 53, an X-axis left reverse mirror 54 and an X-axis right reverse mirror 55. The X-axis left box 51 is provided with an X-axis left laser inlet and an X-axis left laser outlet, and the X-axis right box 52 is provided with an X-axis right laser inlet and an X-axis right laser outlet. The X-axis left laser inlet is connected to the ultrashort pulse laser 3. The X-axis left reverse mirror 54 is arranged in the X-axis left box 51 at positions corresponding to the X-axis left laser inlet and the X-axis left laser outlet, and the X-axis right reverse mirror 55 is arranged in the X-axis right box 52 at positions corresponding to the X-axis right laser inlet and the X-axis right laser outlet. One end of the X-axis accordion cover 53 is connected to the X-axis left laser outlet, and the other end is connected to the X-axis right laser inlet. The X-axis accordion cover 53 helps to protect the laser from external interference during transmission in the X-axis direction, improves processing stability and safety, and facilitates maintenance and adjustment of the optical path direction. The Z-axis ultrashort pulse optical path 6 includes a Z-axis accordion cover 61, the upper end of the Z-axis accordion cover 61 is connected to the X-axis right laser outlet, and the lower end is connected to the second laser input port 712. The Z-axis accordion cover 61 helps to protect the laser from external interference during transmission in the Z-axis direction, ensures the precise transmission of the laser, and ensures the effective transfer of laser energy and continuous coverage of the processing area.

[0026] The Y-axis moving mechanism 10 is arranged on the bed 1, and the A / C-axis turntable 12 is arranged on the Y-axis moving mechanism 10, and is driven by the Y-axis moving mechanism 10 to perform reciprocating motion in the Y-axis direction. The A / C-axis turntable 12 includes a mounting seat, an A-axis direct-drive motor, an A-axis turntable, a C-axis direct-drive motor and a fixture. The A-axis direct-drive motor is mounted on the mounting seat, and the A-axis turntable is arranged on the drive shaft of the A-axis direct-drive motor. The A-axis turntable is driven by the A-axis direct-drive motor to rotate around the A-axis as the axis. The C-axis direct-drive motor is mounted on the A-axis turntable, and the fixture is arranged on the drive shaft of the C-axis direct-drive motor. The fixture is driven by the C-axis direct-drive motor to rotate around the C-axis as the axis.

[0027] During operation, if an ultrashort pulse laser beam is required to fine-tune the cutting edge of a diamond tool, the nanosecond pulse laser 4 stops working. Figure 4, the linear moving mechanism 74 drives the moving mirror 73 to move towards the right side of the optical path sealing box 71 until it reaches the position between the first laser input port 711 and the laser output port 713, so that the moving mirror 73, the first laser input port 711, and the laser output port 713 are on the same vertical axis. At this time, refer to Figure 2 and refer to Figure 4 , the ultra-short pulse laser 3 operates, and the laser beam emitted by it sequentially passes through the X-axis left mirror 54 in the X-axis left box 51, the X-axis bellows 53, the X-axis right mirror 55 in the X-axis right box 52, the Z-axis bellows 61, the fixed mirror 72, the moving mirror 73, and the laser output port 713, and then is focused by the laser lens assembly 8 onto the diamond tool for processing.

[0028] When it is necessary to use a nanosecond pulse laser beam to remove most of the remaining material, the ultra-short pulse laser 3 stops operating. Refer to Figure 5 , the linear moving mechanism 74 drives the moving mirror 73 to move towards the left side of the optical path sealing box 71, so that the moving mirror 73 moves away from the first laser input port 711, so as to make the space between the first laser input port 711 and the laser output port 713 unobstructed. The nanosecond pulse laser 4 operates, and the nanosecond pulse laser beam emitted by it directly passes through the laser output port 713 and enters the laser lens assembly 8, and then is focused by the laser lens assembly 8 onto the diamond tool for processing.

[0029] According to the disclosure and teaching of the above specification, those skilled in the art to which the present invention pertains can also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present invention. As described in the above embodiments of the present invention, other devices obtained by using the same or similar structures are all within the protection scope of the present invention.

Claims

1. A laser processing device for diamond cutting tools, comprising a machine body, a gantry, an X-axis moving mechanism and a Z-axis moving mechanism. The gantry is arranged on the machine body, the X-axis moving mechanism is arranged on the gantry, and the Z-axis moving mechanism is arranged on the X-axis moving mechanism. It is characterized in that: It further includes an ultra-short pulse laser, a nanosecond pulse laser, an X-axis ultra-short pulse optical path, a Z-axis ultra-short pulse optical path, an optical path switching device, and a laser lens assembly. The nanosecond pulse laser, the optical path switching device, and the laser lens assembly are arranged on the Z-axis moving mechanism. Wherein, the laser lens assembly is connected to the laser output port of the optical path switching device, and the nanosecond pulse laser is connected to the first laser input port of the optical path switching device; the lower end of the Z-axis ultra-short pulse optical path is connected to the second laser input port of the optical path switching device, and the upper end extends to the top position of the Z-axis moving mechanism. The ultra-short pulse laser is arranged on the gantry. One end of the X-axis ultra-short pulse optical path is connected to the ultra-short pulse laser, and the other end extends to one side of the position of the Z-axis moving mechanism and is connected to the upper end of the Z-axis ultra-short pulse optical path.

2. The diamond cutting tool laser processing equipment according to claim 1, wherein The first laser input port and the laser output port are located on the same vertical axis.

3. The diamond tool laser processing equipment according to claim 2, wherein, The optical path switching device includes an optical path sealed box, a fixed reflecting mirror, a moving reflecting mirror, and a linear moving mechanism. The second laser input port is located at the top of one end of the optical path sealed box. The fixed reflecting mirror is arranged in the optical path sealed box corresponding to the position of the second laser input port. The moving reflecting mirror is arranged in the optical path sealed box corresponding to the position of the fixed reflecting mirror through the linear moving mechanism and is driven by the linear moving mechanism to move to the position between the first laser input port and the laser output port.

4. The diamond tool laser processing equipment according to claim 3, characterized in that, The linear moving mechanism includes a driving motor, a base, and a sliding seat. The sliding seat is movably arranged on the base through a slide rail, and the driving motor drives the sliding seat to make a linear reciprocating motion on the slide rail through a screw pair.

5. The diamond tool laser processing equipment according to claim 1, characterized in that, The X-axis ultra-short pulse optical path includes an X-axis left box, an X-axis right box, an X-axis bellows, an X-axis left reflecting mirror, and an X-axis right reflecting mirror. The X-axis left box is provided with an X-axis left laser inlet and an X-axis left laser outlet. The X-axis right box is provided with an X-axis right laser inlet and an X-axis right laser outlet. The X-axis left laser inlet is docked with the ultra-short pulse laser. The X-axis left reflecting mirror is arranged in the X-axis left box corresponding to the positions of the X-axis left laser inlet and the X-axis left laser outlet. The X-axis right reflecting mirror is arranged in the X-axis right box corresponding to the positions of the X-axis right laser inlet and the X-axis right laser outlet. One end of the X-axis bellows is connected to the X-axis left laser outlet, and the other end is connected to the X-axis right laser inlet.

6. The diamond tool laser processing equipment according to claim 5, characterized in that, The Z-axis ultra-short pulse optical path includes a Z-axis bellows. The upper end of the Z-axis bellows is connected to the X-axis right laser outlet, and the lower end is connected to the second laser input port.

7. The diamond cutting tool laser processing equipment according to any one of claims 1-6, characterized in that, The laser lens assembly includes a first reflecting mirror box, a second reflecting mirror box, and a focusing lens that are connected in sequence.

8. The diamond tool laser processing equipment according to any one of claims 1-6, characterized in that A Y-axis moving mechanism is arranged on the bed, and an A / C-axis turntable driven by it is arranged on the Y-axis moving mechanism.

9. The diamond cutting tool laser processing equipment according to claim 8, characterized in that, The A / C axis turntable includes a mounting base, an A-axis direct drive motor, an A-axis rotating base, a C-axis direct drive motor, and a fixture. The A-axis direct drive motor is mounted on the mounting base. The A-axis rotating base is arranged on the drive shaft of the A-axis direct drive motor. The C-axis direct drive motor is mounted on the A-axis rotating base. The fixture is arranged on the drive shaft of the C-axis direct drive motor.

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