Laser-assisted diamond sheet sawing equipment

Abstract

The invention provides laser-assisted diamond sheet sawing equipment, which relates to the field of laser-assisted diamond sheet sawing equipment, and comprises a base, a sawing table, a laser-assisted device, a diamond clamp, a ball precision lead screw linear sliding table module, a pressure sensor connecting unit, a high-precision linear sliding rail, a sliding block, a sliding rail bracket, a clamping device and a locking device, the heating effect of a laser auxiliary device is adopted, the mechanical property of a diamond material is reduced, the machining efficiency is improved, the machining quality of the diamond end face is improved, a sandwich structure (sapphire glass-diamond sheet-sapphire glass) is adopted for clamping the diamond sheet, the stress concentration of the end face during cutting is reduced, and the edge breaking resistance is improved; a micro pressure sensor is adopted to measure the pressure of interaction between a saw blade and a diamond, the pressure is adjusted through a ball precision lead screw linear sliding table module, and the pressure is kept to fluctuate within a certain range within a period of time during working. The diamond machining quality is improved, the edge breaking phenomenon of the end face of the diamond is relieved, and the machining efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of laser-assisted sawing diamond equipment, in particular to a laser-assisted sawing diamond sheet equipment. BACKGROUND

[0002] Diamond sheet is widely used in electronic devices, optical windows, cutting and grinding tools, sensors, thermal management systems, micro-electro-mechanical systems and other fields due to its excellent performance. How to obtain good machining surface quality with low loss has become an urgent problem. Sawing is one of the important processing methods for cutting diamond sheet. The machined diamond surface does not appear ablation and graphitization phenomenon, but the traditional sawing diamond sheet will appear defects such as corner collapse and knife marks. Since laser can change the cutting performance of diamond sheet, using laser to preheat the diamond sheet during sawing can reduce the hardness and fracture strength of the material, thereby reducing the corner collapse and knife mark phenomenon during sawing. However, the traditional sawing device does not combine with the laser-assisted device.

[0003] In the traditional sawing diamond sheet cutting process, the clamping device directly acts on the diamond surface by using a metal clamp to fasten the diamond sheet. The fluctuation of the clamping system can reach ±18%. A material with high damping characteristics should be selected. This material can effectively absorb cutting vibration energy and has high hardness and high elastic modulus, which can provide stable clamping force to ensure that the diamond sheet maintains a fixed position and posture during sawing, so that it can effectively suppress the vibration and displacement of the diamond sheet during clamping. The present application adopts a sandwich structure (sapphire glass-diamond sheet-sapphire glass), which can effectively absorb cutting vibration energy and improve the cutting surface quality. However, the traditional sawing device does not use a high-damping, high-hardness, light-transmitting material to clamp the diamond.

[0004] The structural defects of the traditional sawing device cause the diamond sheet to feed in a curved manner, which causes the sawing pressure to change continuously and gradually increase. This non-constant pressure and curved feeding mode causes problems such as knife marks, corner collapse and surface quality degradation on the machined surface. Since these problems are caused by the structure of the device itself, they cannot be effectively improved without changing the structure. Therefore, designing a laser-assisted sawing diamond device with adjustable pressure and straight-line feeding can improve both machining quality and efficiency.

[0005] In the traditional sawing diamond sheet cutting process, since the diamond is a brittle material, when sawing, the cutter cuts the bottom surface, and due to stress concentration, the phenomenon of broken tiles will occur, the present application adopts a sandwich structure (sapphire glass-diamond sheet-sapphire glass), the upper and lower two layers of high stiffness material in the sandwich structure limit the transverse deformation of the middle layer, thereby inhibiting its free expansion, contraction or shear deformation, and during sawing, the smooth transition of stress can be realized, and this structure can greatly improve the broken tile resistance.

[0006] Based on this, we propose a laser-assisted sawing diamond sheet equipment. SUMMARY

[0007] The purpose of the present application is to solve the problems existing in the prior art and propose a laser-assisted sawing diamond sheet equipment.

[0008] To achieve the above purpose, the technical scheme adopted by the present application is as follows: A laser-assisted sawing diamond sheet equipment, comprising a base, a sawing table, a laser-assisted device, a diamond clamp, a precision ball screw linear slide module, a pressure sensor connection unit, a high-precision linear slide rail, a sliding block, a slide rail support, a clamping device and a locking device, the sawing table is arranged on the base, the laser-assisted device is arranged on one side of the sawing table, the precision ball screw linear slide module is fixedly arranged on the base through a connecting plate, the slide rail support is arranged on the base and spans the sawing table, the high-precision linear slide rail is arranged on the slide rail support, the sliding block is slidably arranged on the high-precision linear slide rail, the pressure sensor connection unit is arranged on the precision ball screw linear slide module, the precision ball screw linear slide module drives the pressure sensor connection unit to move forward and backward, the locking device is fixedly arranged on the sliding block, the tail of the locking device is connected with the pressure sensor connection unit, the clamping device is arranged on the locking device, and the diamond clamp is arranged on the clamping device.

[0009] The sawing table comprises a sawing table base, a graphite V-block and a saw blade, the sawing table base is fixedly arranged on the base, the graphite V-block is symmetrically arranged on the sawing table base, and the saw blade is rotatably arranged on the graphite V-block, the saw blade is connected with the motor through a belt, the motor drives the saw blade to rotate through the belt, and the motor is fixedly arranged at the bottom of the base.

[0010] The laser auxiliary device comprises a laser auxiliary device base, a focusing lens holder, a focusing lens, a laser support, a laser holding arm and a laser, the laser auxiliary device base is mounted above the base; the laser support is arranged on the laser auxiliary device base, the laser support can move up and down and rotate on the base and is positioned by fixing screws, the focusing lens holder is arranged on the laser auxiliary device base, the focusing lens holder can move up and down and rotate on the base and is accurately positioned, the rear end is positioned by first fastening screws, the focusing lens holder clamps the focusing lens, the focusing lens holder moves up and down and rotates to accurately position and adjust the focal point, the laser holder is arranged on the laser support, the laser holder can slide forward and backward on the laser support and is positioned by fixing screws, the laser holder is connected with the laser by screws, the angle is adjusted to 0-360°, and the laser can irradiate the diamond clamp.

[0011] The pressure sensor connecting unit comprises a micro push-pull pressure sensor, a pressure sensor base, a ball screw sliding block and a pressure sensor upper connector, the micro push-pull pressure sensor is fixedly connected to the ball screw sliding block through the pressure sensor base, and the ball screw sliding block is arranged on a screw of a ball precision screw linear sliding table module; the pressure sensor upper connector is fixedly arranged at the front end of the micro push-pull pressure sensor, the tail end of the locking device is slidably arranged in the pressure sensor upper connector, a spring is arranged in front of the locking device and the pressure sensor upper connector, a long circular hole is arranged on the pressure sensor upper connector, the pressure sensor upper connector is connected with the locking device in cooperation through a pin, and the pin can slide in the long circular hole.

[0012] The clamping device comprises a second locking screw, a clamping arm and a fastening bolt, the clamping arms are symmetrically arranged on the fastening bolt, the fastening bolt is connected with the locking device in cooperation through the second locking screw, the fastening bolt can rotate on the locking device and is positioned by the second locking screw, the locking device is fixedly connected with the sliding block, and the tail portion is connected with the pressure sensor upper connector in cooperation.

[0013] The diamond clamp comprises a lower clamp, an upper clamp, a second fastening screw and a clamp, the clamp clamps the sapphire glass and the diamond sheet in cooperation, the diamond clamp is mounted on the clamping device and is locked and positioned by the locking screw; The lower clamp and the upper clamp lock the diamond sheet in cooperation by the second fastening screw, the clamped diamond sheet adopts a flexible structure, is fixed by using a sandwich structure (sapphire glass-diamond-sapphire glass), or other reasonable materials can be used to replace the sapphire glass, and the sapphire glass is within the range that can be irradiated by the laser.

[0014] The high-precision linear sliding rail is connected with the sliding rail support in cooperation through screws, so that the radial force generated by sawing is eliminated, and the axial force is transmitted.

[0015] The laser auxiliary device, diamond clamp, pressure sensor upper joint, locking device are made of aluminum alloy.

[0016] The beneficial effects of the present application relative to the prior art are: 1. The laser auxiliary device is used to realize laser-assisted sawing of the diamond sheet, the relative position of the laser and the diamond sheet can be adjusted, the relative position of the laser and the diamond is kept unchanged during processing, the structure is simple, the operation is simple and easy to manufacture.

[0017] 2. The linear feed of the diamond relative to the saw blade can be realized through the ball precise screw linear slide module, the real-time pressure can be measured through the small push-pull pressure sensor, so as to adjust the ball precise screw linear slide module and further adjust the pressure between the diamond and the saw blade.

[0018] 3. The radial force generated during sawing is eliminated through the high-precision guide rail, and only the pressure between the saw blade and the diamond is transmitted.

[0019] 4. The diamond clamp adopts a flexible structure, the diamond sheet is fixed by using a sandwich structure (sapphire glass-diamond-sapphire glass), the breaking of the brittle material can be reduced, the structure can also use other reasonable materials to replace the sapphire glass, since the sapphire glass can transmit laser, the laser energy can be irradiated into the diamond by adjusting the laser defocusing amount to heat the diamond. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present application; Figure 2 It is a sawing table structure schematic diagram of the present application; Figure 3 It is a laser auxiliary device structure schematic diagram of the present application; Figure 4 It is a diamond clamping device structure schematic diagram of the present application; Figure 5 It is a pressure detection device structure schematic diagram of the present application; Figure 6 It is a clamping mechanism structure schematic diagram of the present application; Figure 7 It is a diamond clamp structure schematic diagram of the present application.

[0021] 1, base, 2, sawing table base, 3, graphite V block, 4, saw blade, 5, laser auxiliary device base, 6 belt, 7, first fastening screw, 8, focusing lens holder, 9, focusing lens, 10, laser support, 11, laser holder, 12, laser, 13, lower clamp, 14, second fastening screw, 15, upper clamp, 16, diamond sheet, 17, first locking screw, 18, second locking screw, 19, clamping arm, 20, locking device, 21, fastening bolt, 22, linear slide rail, 23, sliding block, 24, slide rail support, 25, pressure sensor upper joint, 26, spring, 27, micro push-pull pressure sensor, 28, pressure sensor base, 29, pin, 30, sapphire glass, 31, motor, 32, ball screw sliding block, 33, ball precision screw linear slide table module, 34, fixed block. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings, and the content is an explanation of the present application rather than a limitation, and other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0023] Reference Figures 1-7 A laser-assisted sawing diamond sheet device; The application relates to a laser-assisted sawing device for diamond sheet, which is characterized by comprising a base 1, a sawing table, a laser-assisted device, a diamond clamp, a precision ball screw linear slide module 33, a pressure sensor connecting unit, a high-precision linear slide rail 22, a slide block 23, a guide rail support 24, a clamping device and a locking device 20; a clamping groove is arranged on the base 2 of the sawing table and used for placing a graphite V-shaped block 3; a saw blade 4 is rotatably arranged on the graphite V-shaped block 3; the saw blade 4 is connected with a motor 31 through a belt 6; the motor 31 drives the saw blade 4 to rotate through the belt 6; the motor 31 is fixedly arranged at the bottom of the base 1; the saw blade 4 is relatively moved with a diamond 16 when the saw blade 4 rotates at high speed; the diamond 16 is pressed on the saw blade 4 to be sawed; the upper clamp 15 and the lower clamp 13 are locked with the sapphire glass 30 and the diamond 16 through the second fastening screw 14; the lower clamp 13 is clamped by the clamping arm 19 and fixed by the first locking screw 17; the diamond clamp can rotate and move left and right to adjust the relative position of the diamond sheet 16 and the saw blade 4; the locking device 20 is fixed with the clamping arm 19 through the second locking screw 18; the lower part of the locking device 20 is provided with a threaded hole and is connected with the slide block 23; the linear guide rail 22 is fixed on the guide rail support 24 in cooperation with the slide block 23; the tail part of the locking device 20 is provided with a pin hole and is connected with the upper connector 25 of the pressure sensor through the pin 29; the upper connector 25 of the pressure sensor is provided with a long circular hole; the small pressure sensor 27 is connected and fixed on the ball screw slide block 32 through the screw and the pressure sensor base 28; the precision ball screw linear slide module 33 is placed on the base 2 of the sawing table and is fixed on the base 1 through the connecting plate 34; the base 5 of the laser-assisted device is connected with the base 1 through the screw; the laser support 10 is connected with the base 5 of the laser-assisted device through the fixed screw; the focusing lens holder 8 clamps the focusing lens 9; the rear end is fixedly connected with the laser support 10 through the first fastening screw 7 and can move up and down to accurately position and adjust the focal point; the laser holder 11 is connected with the laser 12 through the screw and can adjust the angle to be 0-360 degrees to adjust the relative position of the laser 12 and the diamond 16.

[0024] It should be noted that the diamond clamp, the lower clamp 13 and the upper clamp 15 are matched with each other, the diamond 16 is locked through the second fastening screw 14, the diamond 16 is clamped through the flexible structure, the diamond 16 is fixed through the sandwich structure (sapphire glass 30-diamond 16-sapphire glass 30), the light transmission of the sapphire glass 30 is utilized to change the defocusing amount of the laser, the focal point can be focused into the diamond 16 through the sapphire glass 30, the diamond 16 is heated, and the sandwich structure can effectively reduce the end face chipping phenomenon of the diamond sheet.

[0025] It should be noted that the base 5 of the laser auxiliary device is connected with the base 1 by a fixing screw, the laser support 10 is connected with the base 5 of the laser auxiliary device by a fixing screw, the focusing lens clamp 8 clamps the focusing lens 9, the rear end is fixedly connected with the laser support 10 by the first fastening screw 7, can be moved up and down for accurate positioning, adjusts the focal point, the laser holder 11 is connected with the laser 12 by a screw, and the angle is adjusted to 0-360°.

[0026] It should be noted that the sawing table base 2 has a clamping groove for placing the graphite V block 3, and the saw blade 4 is placed on the graphite V block 3. When the motor drives the saw blade 4 to rotate at high speed, the graphite V block 3 will have a lubricating effect to prevent the generation of a large amount of heat and damage the workbench.

[0027] Further, when the saw blade 4 rotates at high speed under the drive of the motor 31, the ball precise screw linear slide module 33 moves linearly under the control of the controller to press the diamond 16 on the saw blade 4 through the locking device 20 fixed on the linear guide rail 22, so as to achieve the effect of sawing. The linear guide rail 22 is fixed on the guide rail support 24 and can control the diamond to move linearly during machining, eliminating the radial force generated during sawing. The guide rail support 24 has a pin slot at the lower end, which can adjust the position and be fixed by a pin. The clamping arm 19 is connected with the linear guide rail 22, and the front end is connected with the locking device 20 by the second locking screw 18.

[0028] Further, when the micro pressure sensor 27 receives a pressure signal, the pressure of the saw blade 4 and the diamond 16 can be adjusted by the ball precise screw linear slide module 33 through the controller according to the pressure. The ball screw block 32 is connected with the pressure sensor base 28 to drive the pressure sensing device. The tail part of the locking device 20 is slidably arranged in the upper connector 25 of the pressure sensor. A spring 26 is arranged between the locking device 20 and the upper connector 25 of the pressure sensor. The spring 26 is arranged inside the upper connector 25 of the pressure sensor to prevent the pressure from changing too much and damaging the parts, and also can adjust the pressure, so that the saw blade 4 is always in contact with the diamond 16 for continuous cutting during work. The upper connector 25 of the pressure sensor is assembled and connected with the locking device 20 by the pin 29.

[0029] In addition, the clamping arm 19 is symmetrically arranged on the fastening bolt 21, and the fastening bolt 21 is fixed on the locking device 20 by the second locking screw 18. During machining, the relative position of the diamond 16 and the saw blade 4 can be maintained. Before machining, the included angle between the clamping arm 19 and the locking device 20 can also be adjusted. The included angle adjustment range is 0°-180°. At the same time, the front end of the locking device 20 clamps the diamond clamp by the first locking screw 17. Before machining, the included angle between the diamond clamp and the locking device 20 can be adjusted, and then the diamond clamp is fixed. The included angle adjustment range is 0°-360°. The diamond moves left and right by 4 cm.

[0030] The above description is only the preferred embodiment of the present application, but the protection scope of the present application is not limited to the above embodiment. In the technical field of the present application, the specification can be variously changed and modified, and the equivalent replacement, modification and improvement made within the principle of the specification are within the protection scope of the present application.

Claims

1. A laser-assisted sawing of diamond sheet apparatus, characterized by: The utility model relates to a diamond sawing device, including base (1), sawing table, laser auxiliary device, diamond clamp, ball precise screw linear slide module (33), pressure sensor connection unit, high -precision linear slide rail (22), sliding block (23), slide rail support (24), clamping device and locking device (20), sawing table sets up on base (1), laser auxiliary device sets up at one side of sawing table, ball precise screw linear slide module (33) is fixedly arranged on base (1) through connecting plate (34), slide rail support (24) sets up on base (1) and is across in sawing table, high -precision linear slide rail (22) sets up on slide rail support (24), sliding block (23) is slidably arranged on high -precision linear slide rail (22), pressure sensor connection unit sets up on ball precise screw linear slide module (33), and ball precise screw linear slide module (33) drives pressure sensor connection unit to move back and forth, locking device (20) is fixedly arranged on sliding block (23), and locking device (20) tail part is connected with pressure sensor connection unit, and clamping device sets up on locking device (20), and diamond clamp sets up on clamping device.

2. A laser-assisted sawing of diamond sheet apparatus according to claim 1, characterized in that: The sawing table includes a sawing table base (2), a graphite V-block (3), and a saw blade (4). The sawing table base (2) is fixedly arranged on the base (1). The graphite V-block (3) is symmetrically arranged on the sawing table base (2). The saw blade (4) is rotatably arranged on the graphite V-block (3). The saw blade (4) is connected with a motor (31) through a belt (6). The motor (31) drives the saw blade (4) to rotate through the belt (6). The motor (31) is fixedly arranged on the bottom of the base (1).

3. A laser-assisted sawing of diamond sheet apparatus according to claim 2, wherein: The laser auxiliary device includes a laser auxiliary device base (5), a focusing lens holder (8), a focusing lens (9), a laser support (10), a laser holding arm (11), and a laser (12). The laser auxiliary device base (5) is arranged above the base (1). The laser support (10) is arranged on the laser auxiliary device base (5). The laser support (10) can move up and down and rotate on the base (5) and be positioned by fixed screws. The focusing lens holder (8) is arranged on the laser auxiliary device base (5). The focusing lens holder (8) can move up and down and rotate on the base (5) and be accurately positioned. The rear end is positioned by a first fastening screw (7). The focusing lens holder (8) clamps the focusing lens (9). The focusing lens holder (8) moves up and down and rotates to accurately position and adjust the focal point. The laser holding arm (11) is arranged on the laser support (10). The laser holding arm (11) can slide forward and backward on the laser support (10) and be positioned by fixed screws. The laser holding arm (11) is connected with the laser (12) by screws. The laser (12) can irradiate the diamond clamp with an angle adjustment of 0-360°.

4. A laser-assisted sawing of diamond sheet apparatus according to claim 3, wherein: The pressure sensor connecting unit comprises a micro push-pull pressure sensor (27), a pressure sensor base (28), a ball screw slide block (32), and a pressure sensor upper connector (25), the micro push-pull pressure sensor (27) is fixedly connected to the ball screw slide block (32) through the pressure sensor base (28), and the ball screw slide block (32) is arranged on a screw rod of a ball precision screw linear slide module (33); the pressure sensor upper connector (25) is fixedly arranged at the front end of the micro push-pull pressure sensor (27), the tail end of the locking device (20) is slidably arranged in the pressure sensor upper connector (25), the spring (26) is arranged in front of the locking device (20) and the pressure sensor upper connector (25), the long circular hole is arranged on the pressure sensor upper connector (25), the pin (29) is connected to the locking device (20) in a matched mode, and the pin (29) can slide in the long circular hole.

5. A laser-assisted sawing of diamond sheet apparatus according to claim 4, wherein: The clamping device comprises a second locking screw (18), a clamping arm (19), and a fastening bolt (21), the clamping arm (19) is symmetrically arranged on the fastening bolt (21), the fastening bolt (21) is connected to the locking device (20) in a matched mode through the second locking screw (18), the fastening bolt (21) can rotate on the locking device (20) and is positioned through the second locking screw (18), the locking device (20) is fixedly connected to the slide block (23), and the tail portion is connected to the pressure sensor upper connector (25) in a matched mode.

6. A laser-assisted sawing of diamond sheet apparatus according to claim 5, wherein: The diamond clamp comprises a lower clamp (13), an upper clamp (15), a second fastening screw (14), and a clamp, the clamp clamps the sapphire glass (30) and the diamond sheet (16) in a matched mode, the diamond clamp is installed on the clamping device (19) and is positioned through the locking screw (17); The lower clamp (13) and the upper clamp (15) are locked to the diamond sheet (16) in a matched mode through the second fastening screw (14), the diamond sheet (16) is clamped in a flexible structure, is fixed by using a sandwich structure (sapphire glass (30)-diamond (16)-sapphire glass (30)), or can be clamped by using other reasonable materials to replace the sapphire glass (30), and the sapphire glass (30) is in a range that can be irradiated by the laser (12).

7. A laser-assisted sawing of diamond sheet apparatus according to claim 6, wherein: The high-precision linear slide rail (22) is connected to the slide rail support (20) in a matched mode through a screw, so that radial force generated in sawing is eliminated, and axial force is transmitted.

8. A laser-assisted sawing of diamond sheet apparatus according to claim 7, wherein: The laser auxiliary device, the diamond clamp, the pressure sensor upper connector (25), and the locking device (20) are made of aluminum alloy.

Images