Diamond laser cutting device and cutting apparatus

Abstract

The utility model discloses a diamond laser cutting device and cutting equipment, including mounting panel and laser assembly, two laser assemblies are installed to the opposite on mounting panel, and laser assembly includes laser, beam expander collimating mirror, focusing mirror and X axle adjusting module, and beam expander collimating mirror and focusing mirror are installed in the one side of laser in proper order, and focusing mirror is installed on X axle adjusting module. Through setting two laser assemblies, the laser beam that emits in laser in two sides laser assemblies is focused in the both sides of workpiece after passing beam expander collimating mirror and focusing mirror in proper order, thereby from the both sides of diamond material carries out some cutting, has improved the laser processing efficiency to diamond material, and can adjust the position of focusing mirror along X axle through X axle adjusting module, thereby the laser focal point position of the laser beam that is convenient for adjusting is located diamond material surface, is convenient for cutting diamond material.

Description

Technical Field

[0001] This utility model relates to the field of laser processing technology, and in particular to a diamond laser cutting device and cutting equipment. Background Technology

[0002] When laser processing diamond products using existing laser cutting equipment, the horizontal laser beam emitted by the laser is transformed into a vertically downward laser beam by a 45° total reflection mirror, and then focused by a lens into a very small spot at the focal point. When this spot irradiates the material, the diamond material is quickly heated to its vaporization temperature, evaporating to form a hole. The continuous formation of these holes creates a very narrow kerf, completing the cutting of the diamond material. However, the laser beam used in existing processes is unidirectional, and the cutting speed has reached the limit of current technology, thus limiting product production efficiency. Therefore, in conjunction with existing laser cutting equipment, our company's technical personnel have proposed a diamond laser cutting device and cutting equipment as described in this application.

[0003] A search revealed Chinese patent document CN206153760U, published on May 10, 2017, which discloses a device for separating brittle transmissive materials using a through-beam multifocal laser. The device includes two multifocal laser processing systems and a three-dimensional working platform. Each multifocal laser processing system comprises a laser, a light guide mirror, a beam expander, and a set of multifocal lenses, all positioned sequentially along the same optical path. The two processing systems are aligned coaxially on both sides of the brittle transmissive material, doubling the number of focal points within the material. This improves the uniformity of laser energy absorption along the thickness direction and enhances the uniformity of thermal expansion along the thickness direction. After the multifocal laser beam leaves the material, it rapidly cools along the thickness direction, generating tensile stress and achieving laser separation of the thick, brittle transmissive material. Its advantages are: it achieves high-quality, high-efficiency, and high-success-rate separation of thick and brittle transmission materials by laser; its disadvantage is: the adjustment of the laser focus is achieved by adjusting the internal lenses of the multifocal lens group, which makes the structure relatively complex. Utility Model Content

[0004] The purpose of this invention is to provide a diamond laser cutting device and cutting equipment. By setting two laser components, the laser beams emitted by the lasers in the two laser components pass through the beam expander collimating lens and the focusing lens in sequence and are focused on both sides of the workpiece, thereby simultaneously cutting the material, improving the laser processing efficiency of diamond materials. The position of the focusing lens can be adjusted by the X-axis adjustment module, which facilitates the adjustment of the laser focus position of the laser beam on the surface of the diamond material, making it convenient to cut the diamond material. The structure is also simple.

[0005] To achieve the above objectives, this utility model provides a diamond laser cutting device, including a mounting plate and laser components. Two laser components are mounted opposite each other on the mounting plate. Each laser component includes a laser, a beam expander and collimator, a focusing lens, and an X-axis adjustment module. The beam expander and collimator and the focusing lens are sequentially mounted on one side of the laser, and the focusing lens is mounted on the X-axis adjustment module. In use, the laser beams emitted by the lasers on both sides are focused on both sides of the workpiece after passing through the beam expander and collimator and the focusing lens in sequence.

[0006] The laser and beam expander collimator of the laser assembly are mounted on the upper side of the mounting plate, and the focusing lens and X-axis adjustment module are mounted on the lower side of the mounting plate. The mounting plate is provided with a channel for the laser beam to pass through. The mounting plate is equipped with a first reflecting mirror and a second reflecting mirror on the upper and lower sides of the corresponding channel. The laser beam emitted by the laser on both sides passes through the beam expander collimator, the first reflecting mirror, the channel, the second reflecting mirror and the focusing lens in sequence and is focused on both sides of the workpiece.

[0007] The laser beams emitted by the lasers on both sides are coaxial.

[0008] A cutting device includes a worktable on which the aforementioned diamond laser cutting device is mounted.

[0009] The worktable includes a base, a Z-axis lifting platform, and a Y-axis translation platform. The Z-axis lifting platform is mounted on the base, and the Y-axis translation platform is mounted on the Z-axis lifting platform. Support seats are installed on both sides of the base, and the mounting plate is installed on the support seats on both sides respectively.

[0010] The Z-axis lifting platform is connected to the support base on both sides of the corresponding support base by a first linear guide rail assembly for vertical sliding. The Z-axis lifting platform moves back and forth along the Z-axis driven by a first transmission assembly. The Y-axis translation platform is mounted on the Z-axis lifting platform by a second linear guide rail assembly for front and rear sliding. The Y-axis translation platform moves back and forth along the Y-axis driven by a second transmission assembly.

[0011] The Y-axis translation stage is equipped with positioning fixtures for clamping or fixing workpieces.

[0012] Mounting seats are fixedly connected to the opposite side of the two support seats. The first linear guide rail assembly includes a first linear guide rail and a first slider. The first linear guide rail is fixedly installed between the mounting seats on both sides and the base. The Z-axis lifting platform is fixedly installed with sliders at the positions corresponding to the first linear guide rails on both sides. The sliders are slidably connected to the first linear guide rails.

[0013] The first transmission assembly includes a first ball screw, a servo motor, a screw nut, a synchronous pulley, a synchronous belt, and a second ball screw. The first and second ball screws are respectively disposed on both sides of the Z-axis lifting platform. The upper end of the first ball screw is rotatably connected to the mounting seat on the corresponding side via a bearing seat, and the lower end is fixedly connected to the output shaft of the servo motor. The servo motor is mounted on the base. The upper end of the second ball screw is rotatably connected to the mounting seat on the corresponding side via a bearing seat, and the lower end is rotatably connected to the base via a bearing seat. Synchronous pulleys are fixedly mounted on the first and second ball screws respectively, and the synchronous pulleys on both sides are connected by a synchronous belt. Screw nuts are installed on the Z-axis lifting platform at positions corresponding to the first and second ball screws, and the screw nuts on both sides are screwed into the first and second ball screws respectively.

[0014] On the Y-axis translation stage, a positioning fixture is installed between the focusing lenses on both sides.

[0015] Compared with the prior art, this utility model has the following technical effects: This invention employs two laser components. The laser beams emitted from the lasers in the two components pass sequentially through a beam expander and collimator and a focusing lens before being focused on both sides of the workpiece. The workpiece is located in the center of the focusing lenses on both sides, thus simultaneously cutting the diamond material from both sides. This improves the efficiency of laser processing of diamond materials. Furthermore, the position of the focusing lens along the X-axis can be adjusted via an X-axis adjustment module, facilitating the adjustment of the laser focus position of the laser beam on the surface of the diamond material. This makes cutting diamond materials easier, and the structure is simple. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below: Figure 1 This is a schematic diagram of the structure of the first embodiment of the present utility model; Figure 2 This is a schematic diagram of the structure of the second embodiment of the present utility model; Figure 3 For application Figure 1 Schematic diagram of the cutting equipment in a medium-sized diamond laser cutting device; Figure 4 For application Figure 2 A schematic diagram of the cutting equipment in a medium-sized diamond laser cutting device.

[0017] Figure label: Mounting plate 10, channel 11; Laser assembly 20, laser 21, beam expander and collimator 22, focusing lens 23, X-axis adjustment module 24, first reflector 25, second reflector 26, laser beam 27; Base 30; Support base 40, mounting base 41, first linear guide rail assembly 42, first linear guide rail 421, first slider 422; First transmission assembly 50, first ball screw 51, servo motor 52, screw nut 53, synchronous pulley 54, synchronous belt 55, second ball screw 56; Z-axis lifting platform 60, second linear guide assembly 61; Second transmission assembly 70; Y-axis translation stage 80, positioning fixture 81; Workpiece 90. Detailed Implementation

[0018] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0019] Example 1: Please see Figure 1 , 3 A diamond laser cutting device includes a mounting plate 10 and laser components 20. Two laser components 20 are mounted opposite each other on the mounting plate 10. Each laser component 20 includes a laser 21, a beam expander collimating lens 22, a focusing lens 23, and an X-axis adjustment module 24. The beam expander collimating lens 22 and the focusing lens 23 are sequentially mounted on one side of the laser 21, and the focusing lens 23 is mounted on the X-axis adjustment module 24. In use, the laser beams 27 emitted by the two lasers 21 pass through the beam expander collimating lens 22 and the focusing lens 23 in sequence and are focused on both sides of the workpiece 90. By setting up two laser components 20, the laser beams 27 emitted by the lasers 21 in the two laser components 20 pass through the beam expander collimator 22 and the focusing lens 23 in sequence and are focused on both sides of the workpiece 90. The workpiece 90 is located in the center of the focusing lenses 23 on both sides, so that the diamond material is cut from both sides at the same time, which improves the laser processing efficiency of the diamond material. The position of the focusing lens 23 along the X-axis can be adjusted by the X-axis adjustment module 24, so as to facilitate the adjustment of the laser focus position of the laser beam 37 on the surface of the diamond material, which is convenient for cutting the diamond material.

[0020] In this embodiment, the two laser components 20 are arranged opposite each other, and the laser 21, the beam expander collimator 22 and the focusing lens 23 are located on a straight line.

[0021] In this embodiment, the X-axis adjustment module 24 adopts a slide module with a ball screw drive structure. For example, a precision slide module disclosed in CN221880150U is used. When applied to this application, the focusing lens 23 is fixedly mounted on the support plate, and the focusing lens 23 can move between the laser 21 and the positioning fixture 81.

[0022] Furthermore, the beam expander collimator 22 and the focusing lens 23 can be mounted on corresponding brackets and fixed to the mounting plate 10 and the carrier plate by the brackets. For example, a collimator plug-in assembly structure disclosed in CN216939009U is adopted. When applied to this application, the beam expander collimator 22 and the focusing lens 23 are respectively mounted on brackets with similar structures to the collimator plug-in block.

[0023] Example 2: See Figure 2 , 4 The laser assembly 20 has a laser 21 and a beam expander / collimator 22 mounted on the upper side of the mounting plate 10, and a focusing lens 23 and an X-axis adjustment module 24 mounted on the lower side of the mounting plate 10. The mounting plate 10 has a channel 11 for the laser beam 27 to pass through. A first reflecting mirror 25 and a second reflecting mirror 26 are mounted on the upper and lower sides of the corresponding channel 11. The laser beam 27 emitted by the lasers 21 passes sequentially through the beam expander / collimator 22, the first reflecting mirror 25, the channel 11, the second reflecting mirror 26, and the focusing lens 23 before being focused on both sides of the workpiece 90. The first reflecting mirror 25 and the second reflecting mirror 26 are arranged symmetrically at a 45° angle. By setting the first reflecting mirror 25 and the second reflecting mirror 26, the path of the laser beam 27 is changed, reducing the width of the diamond laser cutting device and the overall equipment, making the device and equipment more compact.

[0024] Specifically, the laser beams 27 emitted by the two lasers 21 are coaxial.

[0025] Example 3: Combined with appendix Figure 1-4 A cutting device includes a worktable on which a diamond laser cutting apparatus is mounted. The worktable can employ an existing worktable structure capable of moving and adjusting in the Z-axis and Y-axis directions.

[0026] In this embodiment, see Figure 3 , 4 The worktable includes a base 30, a Z-axis lifting platform 60, and a Y-axis translation platform 80. The Z-axis lifting platform 60 is mounted on the base 30, and the Y-axis translation platform 80 is mounted on the Z-axis lifting platform 60. Support seats 40 are installed on both sides of the base 30, and the mounting plate 10 is installed on the support seats 40 on both sides respectively.

[0027] Furthermore, the Z-axis lifting platform 60 is connected to the support base 40 on both sides of the corresponding support base 40 by the first linear guide rail assembly 42 for vertical sliding. The Z-axis lifting platform 60 is driven by the first transmission assembly 50 to reciprocate along the Z-axis. The Y-axis translation stage 80 is mounted on the Z-axis lifting platform 60 by the second linear guide rail assembly 61 for front and rear sliding. The Y-axis translation stage 80 is driven by the second transmission assembly 70 to reciprocate along the Y-axis.

[0028] Specifically, mounting bases 41 are welded and fixed to opposite sides of the two support seats 40. The first linear guide rail assembly 42 includes a first linear guide rail 421 and a first slider 422. The first linear guide rail 421 is fixedly installed between the mounting bases 41 on both sides and the base 30 through open guide shaft supports. The Z-axis lifting platform 60 has sliders 422 fixedly installed at the positions corresponding to the first linear guide rails 421 on both sides. The sliders 422 are slidably connected to the first linear guide rails 421. The first linear guide rail 421 can be an optical axis.

[0029] In this embodiment, two sets of the first linear guide rail assembly 42 are installed on both sides of the Z-axis lifting platform 60.

[0030] See Figure 4 The first transmission assembly 50 includes a first ball screw 51, a servo motor 52, a screw nut 53, a synchronous pulley 54, a synchronous belt 55, and a second ball screw 56. The first ball screw 51 and the second ball screw 56 are respectively disposed on both sides of the Z-axis lifting platform 60. The upper end of the first ball screw 51 is rotatably connected to the mounting base 41 on the corresponding side through a bearing seat, and the lower end is fixedly connected to the output shaft of the servo motor 52. The servo motor 52 is mounted on the base 30. The upper end of the second ball screw 56 is connected to the... The mounting base 41 on the corresponding side is rotatably connected to the base 30 via a bearing seat, and the lower end is rotatably connected to the base 30 via a bearing seat. Synchronous pulleys 54 are fixedly installed on the first ball screw 51 and the second ball screw 56 respectively. The synchronous pulleys 54 on both sides are connected by a synchronous belt 55. The Z-axis lifting platform 60 is equipped with screw nuts 53 at the positions corresponding to the first ball screw 51 and the second ball screw 56 respectively. The screw nuts 53 on both sides are screwed into the first ball screw 51 and the second ball screw 56 respectively.

[0031] The servo motor 52 is mounted on the bottom of the base 30. The output shaft of the servo motor 52 extends upward through the base 30 and is fixedly connected to the lower end of the first ball screw 51 via a coupling. The rotation of the output shaft of the servo motor 52 drives the first ball screw 51 to rotate, which in turn drives the second ball screw 56 to rotate via the synchronous belt 55, thereby driving the Z-axis lifting platform 60 to move up and down.

[0032] Similarly, two second linear guide assemblies 61 are also installed at intervals on the upper side of the Z-axis lifting stage 60. Specifically, two linear guides are installed at intervals along the Y-axis direction on the upper side of the Z-axis lifting stage 60, and two sliders are installed on the lower side of the Y-axis translation stage 80 at the position corresponding to each linear guide. The sliders cooperate with the linear guides to slide in a directional manner. The second transmission assembly 70 also adopts ball screw transmission, and its transmission structure is the same as that disclosed in CN117739083B. Applied to this application, the mounting base in CN117739083B is equivalent to the Y-axis translation stage 80 of this application, and the base is equivalent to the Z-axis lifting stage 60 of this application.

[0033] Furthermore, to facilitate fixing the workpiece 90 onto the Y-axis translation stage 80, a positioning fixture 81 for clamping or fixing the workpiece 90 is installed on the Y-axis translation stage 80. For example, the positioning fixture 81 can be a synthetic diamond preparation fixture disclosed in CN212044214U.

[0034] The working principle or operation process of this utility model is as follows: When using, please refer to Figure 3 , 4 The diamond material workpiece 90 to be processed is fixed onto the positioning fixture 81. The laser beams 27 emitted by the lasers 21 on both sides pass sequentially through the beam expander collimating lens 22, the first reflecting mirror 25, the channel 11, the second reflecting mirror 26, and the focusing lens 23 before being focused on both sides of the workpiece 90 for cutting. When the Y-axis translation stage 80 moves along the Y-axis, the workpiece 90 also moves along the Y-axis, so that the laser beams 27 form kerfs in the Y-axis direction on both sides of the workpiece 90. These kerfs have depth. During the next cut, the positions of the focusing lenses 23 on both sides are adjusted in the X-axis direction by the X-axis adjustment modules 24 on both sides, so that the laser beams 27 are focused at the bottom of the kerf, thereby further cutting the workpiece 90. When the Z-axis lifting stage 60 moves up and down, it forms kerfs in the Z-axis direction on the workpiece 90.

Claims

1. A diamond laser cutting device, characterized in that: The system includes a mounting plate (10) and a laser assembly (20). Two laser assemblies (20) are mounted opposite each other on the mounting plate (10). Each laser assembly (20) includes a laser (21), a beam expander collimator (22), a focusing lens (23), and an X-axis adjustment module (24). The beam expander collimator (22) and the focusing lens (23) are mounted on one side of the laser (21) in sequence, and the focusing lens (23) is mounted on the X-axis adjustment module (24). In use, the laser beams (27) emitted by the lasers (21) on both sides pass through the beam expander collimator (22) and the focusing lens (23) in sequence and are focused on both sides of the workpiece (90).

2. The diamond laser cutting device according to claim 1, characterized in that: The laser (21) and beam expander collimator (22) of the laser assembly (20) are mounted on the upper side of the mounting plate (10), and the focusing lens (23) and X-axis adjustment module (24) are mounted on the lower side of the mounting plate (10). The mounting plate (10) is provided with a channel (11) for the laser beam (27) to pass through. The mounting plate (10) is equipped with a first reflector (25) and a second reflector (26) on the upper and lower sides of the corresponding channel (11). The laser beam (27) emitted by the laser (21) on both sides passes through the beam expander collimator (22), the first reflector (25), the channel (11), the second reflector (26) and the focusing lens (23) in sequence and is focused on both sides of the workpiece (90).

3. A diamond laser cutting device according to claim 1 or 2, characterized in that: The laser beams (27) emitted by the lasers (21) on both sides are coaxial.

4. A cutting device, comprising a worktable, characterized in that: The worktable is equipped with a diamond laser cutting device according to any one of claims 1-3.

5. A cutting device according to claim 4, characterized in that: The worktable includes a base (30), a Z-axis lifting platform (60) and a Y-axis translation platform (80). The Z-axis lifting platform (60) is mounted on the base (30), and the Y-axis translation platform (80) is mounted on the Z-axis lifting platform (60). Support seats (40) are installed on both sides of the base (30), and the two sides of the mounting plate (10) are respectively mounted on the support seats (40) on both sides.

6. A cutting device according to claim 5, characterized in that: The Z-axis lifting platform (60) is connected to the support base (40) on both sides of the corresponding support base (40) by the first linear guide rail assembly (42) for vertical sliding. The Z-axis lifting platform (60) moves back and forth along the Z-axis by the drive of the first transmission assembly (50). The Y-axis translation platform (80) is mounted on the Z-axis lifting platform (60) by the front and back sliding of the second linear guide rail assembly (61). The Y-axis translation platform (80) moves back and forth along the Y-axis by the drive of the second transmission assembly (70).

7. A cutting device according to claim 5, characterized in that: The Y-axis translation stage (80) is equipped with a positioning fixture (81) for clamping or fixing the workpiece (90).

8. A cutting device according to claim 6, characterized in that: Mounting bases (41) are fixedly connected to the opposite side of the support bases (40) on both sides. The first linear guide rail assembly (42) includes a first linear guide rail (421) and a first slider (422). The first linear guide rail (421) is fixedly installed between the mounting bases (41) on both sides and the base (30). The Z-axis lifting platform (60) is fixedly installed with the first slider (422) at the position corresponding to the first linear guide rails (421) on both sides. The first slider (422) is slidably connected to the first linear guide rail (421).

9. A cutting device according to claim 6, characterized in that: The first transmission assembly (50) includes a first ball screw (51), a servo motor (52), a screw nut (53), a synchronous pulley (54), a synchronous belt (55), and a second ball screw (56). The first ball screw (51) and the second ball screw (56) are respectively disposed on both sides of the Z-axis lifting platform (60). The upper end of the first ball screw (51) is rotatably connected to the mounting seat (41) on the corresponding side through a bearing seat, and the lower end is fixedly connected to the output shaft of the servo motor (52). The servo motor (52) is mounted on the base (30). The second ball screw (56) The upper end is rotatably connected to the mounting seat (41) on the corresponding side through a bearing seat, and the lower end is rotatably connected to the base (30) through a bearing seat. Synchronous pulleys (54) are fixedly installed on the first ball screw (51) and the second ball screw (56) respectively. The synchronous pulleys (54) on both sides are connected by a synchronous belt (55). The Z-axis lifting platform (60) is equipped with screw nuts (53) at the positions corresponding to the first ball screw (51) and the second ball screw (56) respectively. The screw nuts (53) on both sides are screwed together with the first ball screw (51) and the second ball screw (56) respectively.

10. A cutting device according to claim 5, characterized in that: A positioning fixture (81) is installed on the Y-axis translation stage (80) and between the focusing lenses (23) on both sides.

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