Positioning device for crystal grinding and crystal grinding equipment

Abstract

The utility model discloses a positioning device for crystal grinding, the positioning device is connected to a rotating shaft of crystal grinding equipment, the device comprises a crystal mounting disc and a chuck, the crystal mounting disc comprises a body part and a convex part, and a crystal mounting surface is arranged on one side, far away from the convex part, of the body part; the chuck is provided with at least two clamping jaws used for fixing the protruding parts. By using the positioning device, the crystal can be prevented from being pushed by the grinding wheel in the grinding process, and the grinding machining quality of the crystal is not influenced; and moreover, the risk of crystal fragmentation caused by increasing the clamping force can be avoided.

Description

Technical Field

[0001] The present application relates to the technical field of crystal processing, and in particular to a positioning device and crystal grinding equipment for crystal grinding. Background Art

[0002] With the continuous advancement of science and technology, silicon carbide crystals, as a high-performance material, have been widely used in many fields. In order to meet the needs of different application scenarios, the processing accuracy and surface quality requirements of silicon carbide crystals are becoming higher and higher.

[0003] Grinding is an important step in the processing of silicon carbide crystals. Through grinding, tiny cracks, impurities and uneven areas on the surface of the crystal can be removed to improve the integrity and optical quality of the crystal. At the same time, grinding can also achieve high-precision shape and size control to meet the requirements of various complex structures and optical properties.

[0004] When grinding silicon carbide crystals, in the related art, the positioning method of the grinder when grinding silicon carbide crystals is a mechanical clamping method, which clamps the crystals by means of oil pressure or motors, and uses friction to offset the tangential and radial forces generated during grinding. However, this method has some limitations. First, the hardness of silicon carbide crystals is high, second only to diamond, which makes the grinding force very large, which may cause the crystal to be pushed by the grinding wheel during the grinding process, affecting the processing accuracy and the value of subsequent crystal orientation detection; and, the molecular structure of silicon carbide crystals is special, the silicon-carbon bond energy is high, and it is easy to break, so the crystal is relatively brittle. If the clamping force is increased to increase the friction, it is easy to cause the crystal to break. Utility Model Content

[0005] In order to solve the deficiencies of the prior art, the purpose of the present application is to provide a positioning device for grinding crystals that can increase the stability of the crystals during the grinding process.

[0006] In order to achieve the above objectives, this application adopts the following technical solutions:

[0007] A positioning device for grinding crystals, which is connected to the rotating shaft of the crystal grinding equipment, and includes a crystal mounting disk and a chuck, wherein the crystal mounting disk includes a main body and a protruding portion, and a crystal mounting surface is provided on the side of the main body away from the protruding portion; and the chuck is provided with at least two claws for fixing the protruding portion.

[0008] Furthermore, the chuck is provided with at least three claws which can move in the radial direction of the chuck.

[0009] Furthermore, a step portion is provided on one side of the clamping jaw close to the center of the chuck, and the step portions of all the clamping jaws form a groove capable of fixing the protrusion.

[0010] Furthermore, the protrusion is a cylindrical protrusion.

[0011] Furthermore, the diameter of the protrusion is smaller than the diameter of the body.

[0012] Furthermore, the positioning device is also provided with a transition plate, the transition plate is connected to the rotating shaft, and the chuck is connected to a side of the transition plate away from the rotating shaft.

[0013] Furthermore, the positioning device also includes a stopper, one end of which is connected to the side of the chuck, and the other end of which is connected to the side of the rotating shaft.

[0014] Furthermore, the chuck is a pneumatic chuck, a side of the chuck is provided with an air pipe connection port, and the stopper is arranged close to the air pipe connection port.

[0015] The present application also provides a crystal grinding device, which includes the above-mentioned positioning device and fixing device, and a fixed space for fixing the crystal is formed between the positioning device and the fixing device.

[0016] Furthermore, the fixing device and the positioning device are coaxially arranged, and the fixing device and the positioning device can move relatively along the axial direction of the positioning device.

[0017] By using the positioning device, the crystal is fixed on the crystal mounting plate, and the crystal mounting plate is fixed by the chuck, which can effectively prevent the crystal from producing processing errors due to the push of the grinding wheel during the crystal grinding process, thereby improving the quality of the crystal grinding process. In addition, in this way, the force for fixing the crystal mounting plate is mainly achieved by the chuck, rather than the mechanical clamping force provided by the head and tail seats of the grinding equipment. In this way, there is no need to increase the clamping force between the head and tail seats of the grinding equipment to fix the crystal mounting plate, thereby reducing the risk of the crystal being broken due to excessive clamping force during the grinding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the positioning device provided in an embodiment of the present application.

[0019] Figure 2 Schematic diagram of the connection between the positioning device and the rotating shaft provided in an embodiment of the present application.

[0020] Figure 3 This is a schematic diagram of the crystal mounting plate structure provided in an embodiment of the present application.

[0021] Figure 4 for Figure 2 Schematic diagram of the structure of the part of the crystal mounting plate hidden in the middle positioning device.

[0022] Figure 5 A schematic diagram of the chuck structure provided in an embodiment of the present application.

[0023] Figure 6 Schematic diagram of the transition plate provided in an embodiment of the present application.

[0024] Figure 7 This is a schematic diagram of the connection structure between the stopper and the rotating shaft provided in an embodiment of the present application.

[0025] Figure 8 This is a schematic diagram of the structure of the crystal grinding equipment provided in the embodiment of the present application.

[0026] Fig. 9 for Figure 8 A magnified view of the structure of area A.

[0027] icon:

[0028] 100, positioning device; 11, crystal mounting plate; 111, main body; 112, raised portion; 12, chuck; 121, claw; 122, air pipe connection port; 13, stopper; 14, transition plate.

[0029] 200. Crystal grinding equipment; 21. Rotating shaft; 22. Fixing device. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] Combination Figure 1 , Figure 2 and Figure 3 The present application discloses a positioning device 100 for crystal grinding, which is connected to a rotating shaft 21 of a crystal grinding device 200. As an optional implementation, the positioning device 100 includes a crystal mounting plate 11 and a chuck 12, wherein the crystal mounting plate 11 includes a body portion 111 and a protruding portion 112, and a crystal mounting surface is provided on a side of the body portion 111 away from the protruding portion 112; the chuck 12 is connected to the rotating shaft 21, and the chuck 12 is provided with at least two claws 121 for fixing the protruding portion 112.

[0032] Specifically, a crystal mounting surface is provided on one side of the crystal mounting disk 11 away from the raised portion 112, and the crystal mounting surface provides a flat surface for fixing and connecting the end face of the crystal. For example, wax or other strong adhesive materials can be applied on the crystal mounting surface, so that an adhesive layer can be formed on the crystal mounting surface to bond the crystal. In the embodiment of the present application, the mounting surface of the crystal mounting disk 11 is fixedly connected to one end face of the crystal by waxing. The chuck 12 is provided with at least two claws 121, and the claws 121 can clamp the raised portion 112 of the crystal mounting disk 11 to achieve a stable clamping of the assembly composed of the crystal and the crystal mounting disk 11. In this way, the claws 121 can clamp the assembly, thereby preventing the assembly from moving radially along the crystal during the crystal grinding process. This method does not need to increase the maximum static friction between the crystal mounting plate 11 and the headstock of the crystal grinding device 200 to prevent the crystal from moving radially during the grinding process. Therefore, the tightening force requirements between the headstock and tailstock of the crystal grinding device 200 are relatively low, and it can effectively prevent the crystal from breaking due to excessive tightening force between the headstock and tailstock of the crystal grinding device 200.

[0033] As an optional implementation, Figure 3 As shown, the protrusion 112 is a cylindrical protrusion. In this way, the rolling angle of the crystal mounting plate 11 does not affect the docking between the protrusion 112 and the chuck 12, thereby simplifying the operation process and improving work efficiency.

[0034] As an optional implementation, the diameter of the protrusion 112 is smaller than the diameter of the body 111. In this way, the protrusion 112 will not affect the grinding of the crystal by the grinding wheel of the grinding equipment, and the body 111 can provide a larger crystal mounting surface to stably fix the crystal.

[0035] As an optional implementation, the chuck 12 is provided with at least three claws 121 that can move in the radial direction of the chuck 12 .

[0036] Specifically, by providing at least three claws 121 on the chuck 12, the clamping stability of the crystal mounting plate 11 can be enhanced, which helps prevent the crystal mounting plate 11 from moving during the processing, thereby ensuring the processing accuracy. In addition, the claws 121 can move along the radial direction of the chuck 12, so that it can adapt to crystal mounting plates of different specifications during the loading stage of the rounding process, thereby improving the universality of the positioning device.

[0037] As an optional implementation, combining Figure 4 , Figure 5 A step portion is provided on one side of the clamping claw 121 close to the center of the chuck 12 , and the step portions of all the clamping claws 121 form a groove capable of fixing the protrusion 112 .

[0038] Specifically, when the protrusion 112 of the crystal mounting plate 11 is embedded in the groove of the claw 121, the step portion of the claw 121 abuts against the side surface of the crystal mounting plate 11, thereby preventing the crystal mounting plate 11 from moving in the radial direction of the crystal during the crystal grinding process.

[0039] As an optional implementation, the chuck 12 is a pneumatic chuck, such as Figure 5 As shown, a gas pipe connection port 122 is provided on the side of the chuck 12 .

[0040] Specifically, the air pipe connection port 122 can be connected to a pneumatic control system through an air pipe, so that compressed air is introduced into the inside of the pneumatic chuck to drive the jaws 121 to move radially along the pneumatic chuck to complete the clamping and releasing actions of the crystal mounting plate 11 .

[0041] It is understandable that the pneumatic chuck mentioned in the above description is only an optional implementation. In fact, according to different actual application requirements and scenarios, other types of chucks, such as electric chucks and hydraulic chucks, can also be selected.

[0042] As an optional implementation, Figure 6 As shown, the positioning device 100 is further provided with a transition plate 14, the transition plate 14 is connected to the rotating shaft 21, and the chuck 12 is connected to the side of the transition plate 14 away from the rotating shaft 21. The transition plate 14 connects the rotating shaft 21 and the chuck 12, which can ensure that the connection between the rotating shaft 21 and the chuck 12 is more stable and reliable.

[0043] As an optional implementation, combining Figure 5 and Figure 7 The positioning device 100 further includes a stopper 13, one end of which is fixedly connected to the side of the chuck 12, and the other end of which is fixedly connected to the side of the rotating shaft 21. In this way, the stopper 13 can prevent the air tube from rotating with the crystal and causing the air tube to be pulled and fall off.

[0044] As an optional implementation, the stopper 13 is arranged near the trachea connection port 122. With this layout, the operator can complete most of the work in a relatively fixed position, which can facilitate the installation or disassembly of the equipment, thereby improving work efficiency.

[0045] The present application also discloses a crystal grinding device 200, in combination with Figure 8 and Fig. 9 The crystal grinding device 200 includes the positioning device 100 and the fixing device 22 mentioned above, and a fixed space for fixing the crystal is formed between the positioning device 100 and the fixing device 22.

[0046] Specifically, the positioning device 100 can be regarded as the headstock of the crystal grinding device 200, and the fixing device 22 can be regarded as the tailstock of the crystal grinding device 200. When the crystal grinding device 200 is used, the assembly formed by the fixed connection between the crystal and the crystal mounting plate 11 can be placed in a preset fixed space, which is formed between the positioning device 100 and the fixing device 22 to complete the grinding operation.

[0047] As an optional implementation, the fixing device 22 of the crystal grinding device 200 and the positioning device 100 are coaxially arranged, and the fixing device 22 and the positioning device 100 can move relatively along the axial direction of the positioning device 100 .

[0048] Specifically, the fixing device 22 and the positioning device 100 can move relative to each other along the axis direction of the positioning device 100, so that the fixed space of the crystal grinding device 200 can place crystals of different lengths, thereby meeting the requirements of crystal grinding processing of different specifications. In addition, by controlling the positioning device 100 and the fixing device 22 to move toward each other, the positioning device 100 and the fixing device 22 can be made to press against the crystal, and by controlling the distance between the positioning device 100 and the fixing device 22, the magnitude of the pressing force of the fixing device 22 and the positioning device 100 on the crystal can be adjusted.

[0049] In order to facilitate the understanding of the embodiments by those skilled in the relevant art, the following will describe the method of using the crystal grinding device 200 provided in the embodiments of the present application. The details are as follows:

[0050] Step S1, fix the crystal to the crystal mounting plate 11 by waxing to form an assembly.

[0051] Step S2, fixedly connecting the assembly body to the claw 121. Specifically, the protrusion 112 of the crystal mounting plate 11 is placed in the groove formed by the claw 121, and the claw 121 is controlled to clamp the protrusion 112 to achieve a fixed connection between the assembly body and the claw 121.

[0052] Step S3 , controlling the positioning device 100 and / or the fixing device 22 to move toward each other, so that the fixing device 22 abuts against the end of the crystal away from the crystal mounting plate 11 .

[0053] Step S4: Control the crystal grinding device 200 to start grinding the crystal.

[0054] Step S5 , after the crystal grinding operation is completed, the positioning device 100 and / or the fixing device 22 are controlled to move in opposite directions, and the claws 121 are controlled to release the clamping of the protruding portion 112 of the crystal mounting plate 11 .

[0055] Step S6 , taking the crystal mounting plate 11 with the crystal fixed thereon out of the groove formed by the claws 121 of the positioning device 100 .

[0056] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A positioning device (100) for crystal grinding, the positioning device (100) being connected to a rotating shaft (21) of a crystal grinding device (200), characterized in that: The positioning device (100) comprises: A crystal mounting plate (11), the crystal mounting plate (11) comprising a main body (111) and a raised portion (112), a crystal mounting surface being provided on a side of the main body (111) away from the raised portion (112); A chuck (12), the chuck (12) being connected to the rotating shaft (21), and the chuck (12) being provided with at least two claws (121) for fixing the protruding portion (112).

2. The positioning device (100) according to claim 1, characterized in that: The chuck (12) is provided with at least three claws (121) which can move in the radial direction of the chuck (12).

3. The positioning device (100) according to claim 1, characterized in that: A step portion is provided on one side of the clamping claw (121) close to the center of the chuck (12), and all the step portions of the clamping claw (121) form a groove capable of fixing the protruding portion (112).

4. The positioning device (100) according to claim 1, characterized in that: The protrusion (112) is a cylindrical protrusion.

5. The positioning device (100) according to claim 4, characterized in that: The diameter of the protruding portion (112) is smaller than the diameter of the main body portion (111).

6. The positioning device (100) according to claim 1, characterized in that: The positioning device (100) is further provided with a transition plate (14), wherein the transition plate (14) is connected to the rotating shaft (21), and the chuck (12) is connected to a side of the transition plate (14) away from the rotating shaft (21).

7. The positioning device (100) according to claim 1, characterized in that: The positioning device (100) further comprises a stopper (13), one end of which is connected to a side surface of the chuck (12), and the other end of which is connected to a side surface of the rotating shaft (21).

8. The positioning device (100) according to claim 7, characterized in that: The chuck (12) is a pneumatic chuck, a side surface of the chuck (12) is provided with an air pipe connection port (122), and the stopper (13) is arranged close to the air pipe connection port (122).

9. A crystal grinding device (200), characterized in that: The crystal grinding device (200) comprises a positioning device (100) and a fixing device (22) as described in any one of claims 1 to 8, wherein a fixed space for fixing the crystal is formed between the positioning device (100) and the fixing device (22).

10. The crystal grinding device (200) according to claim 9, characterized in that: The fixing device (22) and the positioning device (100) are coaxially arranged, and the fixing device (22) and the positioning device (100) can move relative to each other along the axial direction of the positioning device (100).

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