Sheet PCD (Poly Crystal Diamond) laser processing tool clamp

Abstract

The utility model discloses a sheet PCD laser processing tool clamp which comprises a tool base, a datum plate is fixedly connected to the middle of the inner wall of the tool base, a plurality of through holes are formed in the datum plate, strong magnetic sheets are assembled and connected in the through holes, and a gasket is assembled and connected to the lower half portion of the interior of the tool base. According to the utility model, the strong magnetic sheet is arranged in the tool, and is used for magnetically attracting and fixing the sheet PCD in the groove of the tool base, so that a clamping jaw of laser processing equipment can conveniently grab the tool to rotate, the rotary laser processing of the sheet PCD is realized, a groove structure is formed on the tool base and is used as an ultrathin PCD placing groove, and the ultrathin PCD can be placed in the groove to play a role in limiting; the PCD is stably adsorbed in the containing groove, the side face of a machined PCD product is protected, the thickness of the containing groove is limited, the upper half portion of the ultra-thin PCD can be exposed, and a laser machining device can conveniently conduct laser machining treatment on the ultra-thin PCD.

Description

Technical Field

[0001] This utility model relates to the field of PCD laser processing technology, and in particular to a tooling fixture for thin-film PCD laser processing. Background Art

[0002] PCD, also known as polycrystalline diamond, is a composite material made by combining diamond microcrystals through a specific process. It has excellent properties such as high hardness, good wear resistance, high thermal conductivity and low coefficient of thermal expansion. PCD has significant advantages in machining fields such as cutting and grinding.

[0003] Laser processing technology is renowned for its high precision and efficiency. In the processing of thin-film PCD, the laser beam can be precisely focused on the material surface, achieving micron-level processing accuracy. Simultaneously, laser processing is fast, significantly reducing processing time and improving production efficiency. This combination of high precision and high efficiency makes laser processing an ideal choice for processing thin-film PCD. Furthermore, laser processing technology offers flexible processing capabilities, easily handling the processing needs of various complex shapes and structures. In the processing of thin-film PCD, the laser beam can be programmably controlled to perform complex cutting, drilling, engraving, and other processing operations. This flexibility makes laser processing of great value in the customized processing of thin-film PCD.

[0004] With the increasing popularity of laser processing in the field of superhard material processing, more and more manufacturers are using lasers to process diamond layers. Rotary laser processing is commonly used, in which the product is gripped and rotated by a chuck while the laser processes the sample. For products with a thickness greater than 1.6mm, the grippers built into the laser equipment can be used to fix and process the product. However, for products with a thickness of ≤1.6mm, it is difficult to grip them directly with chucks, and the thinness of the sheet makes the grippers unstable. During the rotation process, the thin sheet is prone to flying out or deflection, resulting in product defects.

[0005] A laser cutting machine disclosed in Chinese patent document CN203091975U includes an operating table with an operating touch screen. A worktable, lower in height than the operating table, is located on one side of the operating table. An optical path system is positioned above the operating table, with a laser component at one end. A transmission mechanism is located on the worktable, and a loading tray made of magnetic material is mounted on the transmission mechanism. This laser cutting machine includes an operating table, a worktable, a transmission mechanism, a loading tray, and a laser component. The loading tray is made of magnetic material. When cutting thin sheets of iron-based metal, the magnetic material magnetically attracts and fixes the iron-based workpiece, ensuring a tight fit between the workpiece and the loading tray during processing, preventing displacement and thus ensuring processing accuracy. It also facilitates loading and unloading, shortens tooling time, and allows for the flattening of iron-based materials. However, this laser cutting machine does not provide lateral restraint after attracting and fixing the workpiece, allowing the workpiece to easily move laterally, affecting processing. Furthermore, the attracted workpiece cannot be clamped for rotational processing.

[0006] To address the shortcomings of the existing technology, providing a tooling fixture for thin-film PCD laser processing is a problem worthy of research. Utility Model Content

[0007] The purpose of this invention is to overcome the shortcomings of existing laser processing devices, which make it difficult to directly grip products with a thickness of ≤1.6mm, and the thinness of the sheet causes the grippers to be unstable, making the sheet easy to fly out or deflect during rotation, resulting in product processing failure. This invention provides a laser processing fixture for thin PCD sheets, which achieves the technical effect of stable adsorption and fixation of the processed thin PDC sheets for convenient clamping.

[0008] The objective of this utility model is achieved through the following technical solution:

[0009] A thin-film PCD laser processing fixture includes a fixture base, a reference plate fixedly connected to the middle of the inner wall of the fixture base, a plurality of through holes opened on the reference plate, and strong magnetic sheets assembled and connected in each of the through holes, and a gasket assembled and connected to the lower half of the interior of the fixture base.

[0010] The thickness of the strong magnetic sheet is adapted to the thickness of the reference plate, and the through holes are all cylindrical. The shape of the strong magnetic sheet is adapted to the shape of the through holes. The strong magnetic sheet is used to magnetically fix the thin PCD sheet in the groove of the fixture base, which facilitates the gripper of the laser processing equipment to grasp the fixture and rotate it, realizing the rotational laser processing of the thin PCD sheet. This avoids the situation where the thin PCD sheet is difficult to grasp directly by the gripper and improves the stability of the thin PCD sheet clamping.

[0011] The distance between the top of the reference plate and the top of the tooling base is less than the thickness of the assembled ultra-thin PCD. The shape of the inner side of the tooling base is adapted to the shape of the assembled ultra-thin PCD, forming a groove structure on the tooling base as an ultra-thin PCD placement slot. Placing the ultra-thin PCD inside can play a limiting role, so that the PCD is stably adsorbed in the placement slot, and provides protection for the side of the PCD product being processed.

[0012] The through hole includes a large-diameter circular hole located in the middle of the reference plate and a small-diameter circular hole surrounding the large-diameter circular hole. The shape of the through hole corresponds to and matches the shape of the strong magnetic sheet.

[0013] The shape of the gasket is adapted to the shape of the lower half of the inner wall of the tooling base. A sealing ring is fixedly connected to the lower half of the inner wall of the gasket. The friction coefficient between the sealing ring and the gasket is greater than two. The gasket can support and protect the strong magnetic sheet in the through hole, preventing the strong magnetic sheet from falling directly out of the through hole and affecting the adsorption effect on the thin PCD sheet.

[0014] The gasket has storage slots on both sides of its bottom, and a pull rope is fixedly connected inside the storage slots. A threaded hole is provided at the center of the bottom of the gasket.

[0015] Positive and beneficial effects: 1. This thin PCD laser processing fixture has a strong magnetic sheet inside the fixture, and some PCDs have magnetic materials added inside, so that the PCDs have a certain magnetism. The strong magnetic sheet can be used to magnetically fix the thin PCDs in the groove of the fixture base, which makes it convenient for the grippers of the laser processing equipment to grasp the fixture and rotate it, so as to realize the rotational laser processing of thin PCDs.

[0016] 2. This thin-film PCD laser processing fixture has a groove structure formed on the fixture base, which serves as a placement groove for the ultra-thin PCD. Placing the ultra-thin PCD inside can limit its position, ensuring that the PCD is stably adsorbed in the placement groove. It also provides protection for the sides of the PCD product being processed, limits the thickness of the placement groove, and allows the upper part of the ultra-thin PCD to be exposed, facilitating laser processing by the laser processing device.

[0017] 3. The fixture for laser processing of thin PCD sheets has a shim that supports and protects the strong magnetic sheet inside the through hole, preventing the strong magnetic sheet from falling directly out of the through hole and affecting the adsorption effect on the thin PCD sheet. At the same time, the shim isolates the strong magnetic sheet from the laser equipment gripper, making it easier for the gripper to hold the fixture. Attached Figure Description

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 This is a bottom view of the structure of this utility model;

[0020] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0021] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A;

[0022] Figure 5 This is a schematic diagram of the structure of this utility model in its disassembled state;

[0023] Figure 6 This is a cross-sectional structural diagram of the present invention in its disassembled state.

[0024] In the diagram: 1-Tooling base, 2-Base plate, 3-Through hole, 4-Strong magnet, 5-Gasket, 6-Sealing ring, 7-Storage slot, 8-Pull rope, 9-Threaded hole. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0026] Example 1

[0027] like Figures 1 to 6 As shown, a thin-film PCD laser processing fixture includes a fixture base 1, a reference plate 2 fixedly connected to the middle of the inner wall of the fixture base 1, a plurality of through holes 3 are opened on the reference plate 2, and strong magnetic sheets 4 are assembled and connected in each of the through holes 3, and a gasket 5 is assembled and connected in the lower half of the interior of the fixture base 1.

[0028] like Figures 3 to 6 As shown, the thickness of the strong magnetic sheet 4 is adapted to the thickness of the reference plate 2, and the through holes 3 are all cylindrical. The shape of the strong magnetic sheet 4 is adapted to the shape of the through holes 3. By placing the strong magnetic sheet 4 inside the fixture, some PCDs have magnetic materials added inside, so that the PCDs have a certain magnetism. The strong magnetic sheet 4 can be used to magnetically fix the thin PCD in the groove of the fixture base 1, which makes it convenient for the gripper of the laser processing equipment to grasp the fixture for rotation, realize the rotational laser processing of the thin PCD, avoid the situation that the thin PCD is difficult to grasp directly by the gripper, and improve the stability of the thin PCD clamping, and avoid the thin sheet flying out or deflecting during the rotation process, causing product processing waste and other problems.

[0029] During the machining process of magnetic PCD, the magnetic force helps to reduce cutting force and cutting temperature, improve tool durability and cutting rate, and reduce vibration and impact during the cutting process, thereby reducing tool wear rate. It can also assist in clamping the workpiece, reduce the use of fixtures, and simplify the machining process. Therefore, machining thin sheet PCD with magnetic force can greatly improve machining efficiency.

[0030] Setting the through hole 3 to a cylindrical shape facilitates the replacement of the strong magnetic sheet 4. After the laser processing of the thin PCD is completed, the strong magnetic sheet 4 can be removed from below the tooling base 1, thereby releasing the strong magnetic sheet from the magnetic attraction of the PCD and making it easy to remove the processed thin PCD.

[0031] like Figures 3 to 4 As shown, the distance between the top of the reference plate 2 and the top of the fixture base 1 is less than the thickness of the assembled ultra-thin PCD. The shape of the inner side of the fixture base 1 is adapted to the shape of the assembled ultra-thin PCD. Through the cooperation of the fixture base 1 and the reference plate 2, a groove structure is formed on the fixture base 1 as an ultra-thin PCD placement groove. Placing the ultra-thin PCD inside can play a limiting role, so that the PCD is stably adsorbed in the placement groove, and provides protection for the side of the PCD product being processed. It limits the thickness of the placement groove, so that the upper part of the ultra-thin PCD can be exposed, which is convenient for the laser processing device to perform laser processing.

[0032] like Figure 1 As shown, the through hole 3 includes a large-diameter circular hole in the middle of the reference plate 2 and a small-diameter circular hole surrounding the large-diameter circular hole. The shape of the through hole 3 corresponds to the shape of the strong magnetic sheet 4. By setting multiple circular through holes 3 on the reference plate 2, the installed strong magnetic sheet 4 can generate a uniform magnetic attraction force on the bottom of the adsorbed thin PCD, stably adsorbing the thin PCD in the placement groove, avoiding uneven adsorption that causes uneven tilting of the thin PCD and affects laser processing.

[0033] Example 2

[0034] like Figures 3 to 4 As shown, the shape of the gasket 5 is adapted to the shape of the lower half of the inner wall of the fixture base 1. A sealing ring 6 is fixedly connected to the lower half of the inner wall of the gasket 5. The friction coefficient between the sealing ring 6 and the gasket 5 is greater than two. By setting the gasket 5 at the bottom of the fixture base 1, the gasket 5 can support and protect the strong magnetic sheet 4 in the through hole 3, preventing the strong magnetic sheet 4 from falling directly out of the through hole 3 and affecting the adsorption effect on the thin PCD sheet. At the same time, the gasket 5 isolates the strong magnetic sheet 4 from the laser equipment gripper, making it easier for the gripper to hold the fixture. Setting the sealing ring 6 inside the fixture base 1 can increase the friction between the gasket 5 and the inner wall of the fixture base 1, thereby stably assembling the gasket 5 inside the fixture base 1.

[0035] Furthermore, by making the gasket 5 a magnetic material, it can attract the strong magnetic sheet 5, adsorbing and fixing the strong magnetic sheet 5 inside the through hole 3 to prevent it from falling off. After the laser processing of the thin PCD is completed, as long as the magnetic force of the gasket 5 on the strong magnetic sheet 4 is greater than the magnetic force of the thin PCD on the strong magnetic sheet 4, pulling the gasket 5 outward can simultaneously pull out the strong magnetic sheet 4 to complete the disassembly. The thin PCD, which has lost the attraction of the strong magnetic sheet 4, can be easily removed, avoiding the situation where the thin PCD is not easy to remove in the magnetic state. Alternatively, if the weight of the strong magnetic sheet 4 is greater than its magnetic force on the thin PCD, after removing the gasket 5, the strong magnetic sheet 4 can also automatically detach from the through hole 3 under its own gravity and release the magnetic state.

[0036] Example 3

[0037] like Figure 2 As shown, storage grooves 7 are provided on both sides of the bottom of the pad 5. A pull rope 8 is fixedly connected inside the storage groove 7. By setting the pull rope 8 at the bottom of the pad 5, the pad 5 can be taken out by pulling the pull rope 8 when it is necessary to remove it from the fixture. During the process of the fixture being clamped for laser processing, the pull rope 8 retracts into the storage groove 7 to avoid affecting the normal processing.

[0038] like Figure 2 As shown, a threaded hole 9 is provided at the center of the bottom of the gasket 5. By providing a threaded hole 9 at the bottom of the gasket 5, when the gasket 5 is too tightly assembled with the tooling base 1 and it is difficult to pull it out with the pull rope 8, the bolt can be threaded into the threaded hole 9 to increase the force point and pull the bolt to help pull the gasket 5 out from the bottom of the assembly base 1.

[0039] The working principle of this utility model is as follows:

[0040] S1. The strong magnetic sheet 4 is assembled into the through hole 3, and the gasket 5 is sealed into the bottom inner wall of the tooling base 1 by the sealing ring 6, which provides support and protection for the strong magnetic sheet 4.

[0041] S2. The thin PCD sheet is assembled into the assembly groove, and the thin PCD sheet is adsorbed and fixed in the assembly groove under the adsorption of the strong magnetic sheet 4.

[0042] S3. The tooling is held by the grippers of the laser equipment and rotated to process the workpiece by the laser processing equipment;

[0043] S4. After completing the laser processing of the thin PCD, remove the strong magnetic sheet 4 from below the tooling base 1, thereby releasing the strong magnetic sheet from the magnetic attraction of the PCD, making it easier to remove the processed thin PCD.

Claims

1. A fixture for laser processing of thin-film PCD, comprising a fixture base (1), characterized in that: A reference plate (2) is fixedly connected to the middle of the inner wall of the tooling base (1). Several through holes (3) are opened on the reference plate (2). A strong magnetic sheet (4) is installed in each of the through holes (3). A gasket (5) is installed in the lower part of the tooling base (1).

2. The tooling fixture for thin-film PCD laser processing according to claim 1, characterized in that: The thickness of the strong magnetic sheet (4) is adapted to the thickness of the reference plate (2), and the through holes (3) are all cylindrical. The shape of the strong magnetic sheet (4) is adapted to the shape of the through holes (3).

3. The tooling fixture for thin-film PCD laser processing according to claim 1, characterized in that: The distance between the top of the reference plate (2) and the top of the tooling base (1) is less than the thickness of the assembled ultra-thin PCD, and the shape of the inner side of the tooling base (1) is adapted to the shape of the assembled ultra-thin PCD.

4. The tooling fixture for thin-film PCD laser processing according to claim 1, characterized in that: The through hole (3) includes a large-diameter circular hole in the middle of the reference plate (2) and a small-diameter circular hole surrounding the large-diameter circular hole. The shape of the through hole (3) corresponds to and matches the shape of the strong magnetic sheet (4).

5. The tooling fixture for thin-film PCD laser processing according to claim 1, characterized in that: The shape of the gasket (5) is adapted to the shape of the lower half of the inner wall of the tooling base (1). A sealing ring (6) is fixedly connected to the lower half of the inner wall of the gasket (5). The coefficient of friction between the sealing ring (6) and the gasket (5) is greater than two.

6. The tooling fixture for thin-film PCD laser processing according to claim 1, characterized in that: The bottom of the pad (5) is provided with storage slots (7) on both sides, and a pull rope (8) is fixedly connected inside the storage slots (7).

7. The tooling fixture for thin-film PCD laser processing according to claim 1, characterized in that: A threaded hole (9) is provided at the center of the bottom of the gasket (5).

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