Grinding machine clamp for sapphire special-shaped machining
By designing a grinder for sapphire glass sheets, and using the grinding wheel of the grinder to perform flat special-shaped processing of the product, the problems of low operating efficiency of CNC grinding rods and easy to breakage are solved, achieving efficient and low-cost processing effect.
Patent Information
- Application Number
- CN202421471848.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-25
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-06-25
AI Technical Summary
During the processing of sapphire glass sheets, the prior art has a long processing time and low processing efficiency of the single-piece product due to the low operating efficiency of CNC grinding rods, and the product is prone to rupture, which increases the defect rate. At the same time, the service life of the grinding rods is short and the processing cost is increased.
A grinder fixture for special-shaped processing of sapphire is designed. Multiple pieces of product to be processed are fixed on the grinder table through vacuum adsorption, and the grinding wheel is guided through the guide channel on the product placement block, so that the grinding wheel grinds the preset area on the product to achieve flat special-shaped processing.
It significantly improves the production capacity of plane-shaped processing of sapphire glass sheets, reduces the risk of product fragmentation, improves product yield, reduces the frequency of grinding wheel replacement, and reduces processing costs.
Smart Images
Figure CN222831557U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sapphire processing, in particular to a grinding machine fixture for processing special-shaped sapphires. Background Art
[0002] Sapphire glass has good scratch resistance and chemically strengthened glass has good impact resistance. It is currently widely used in screens, lenses and other components of electronic products to improve the appearance of the product and extend its service life. In the processing of sapphire glass sheets, it is often necessary to perform planar special-shaped processing on the surface of the sheet to obtain sapphire glass sheets with partial through grooves. At present, when the industry performs planar special-shaped processing on sapphire glass, the product is mainly fixed on a CNC (Computer Number Control) machine, and the product is coarsely ground and finely ground in sequence by a CNC grinding rod to obtain a special-shaped plane with a through groove. Constrained by the operating efficiency of the CNC grinding rod, the time for coarse grinding and fine grinding of a single product reaches 25min / pcs, the single-piece operation time of the product is long, and the processing efficiency is low, which affects the production capacity. Furthermore, in the process of using CNC rapid rough grinding, the product is easy to break, thereby increasing the product defective rate. Due to the long product fine grinding time, after using the CNC grinding rod to process 6 products at a time, the grinding rod is scrapped, which shortens the service life of the grinding rod, thereby increasing the processing cost of the product. Frequent replacement of the grinding rod will also further reduce the processing efficiency of the product. The use of grinding machines can significantly improve product yield and production capacity, and reduce processing costs. However, traditional grinding machines lack limit devices for sapphire glass sheets and guide devices for grinding wheels, making it difficult to use grinders to perform flat and special-shaped processing on sapphire glass sheets. Utility Model Content
[0003] Based on this, it is necessary to provide a sapphire profile processing grinding machine fixture to address the above-mentioned deficiencies, which is used to fix the sapphire glass sheet to the grinding machine table so that the sapphire glass sheet can be processed in a planar shape using the grinding wheel of the grinder.
[0004] A grinding machine fixture for sapphire special-shaped processing, including a base for fixing on a grinding machine table, a plurality of mounting positions are arranged side by side on the upper surface of the base, and a product placement block is fixed on each of the mounting positions; a limiting groove for embedding the product to be processed, and a guide channel penetrating two opposite side surfaces of the product placement block and extending along the arrangement direction of each mounting position to provide a moving channel for the grinding wheel of the grinder are provided on the upper surface of the product placement block, and the guide channel is connected with the limiting groove and forms two guiding notches on two opposite sides of the limiting groove; an air guide groove is provided on the bottom surface of the limiting groove, and an air guide channel is provided in the product placement block, the air guide channel penetrates the side surface of the product placement block to form a first air port for communicating with an external air pressure device, and the air guide channel penetrates the upper surface of the product placement block and forms a second air port in the air guide groove.
[0005] In one embodiment, a plurality of partition bars are arranged at intervals on the upper surface of the base to separate the upper surface area of the base to form a plurality of the installation positions.
[0006] In one of the embodiments, two retaining bars are disposed on the upper surface of the base at both ends of the partition bar, the retaining bars extend along the arrangement direction of the installation positions, and a plurality of avoidance notches corresponding to and connected to the installation positions are formed at intervals on the retaining bars.
[0007] In one of the embodiments, the side of the product placement block where the first air port is located abuts against the edge of the avoidance gap.
[0008] In one of the embodiments, the upper surface of the product placement block is also provided with a retrieval channel that passes through two opposite sides of the product placement block and extends perpendicular to the arrangement direction of each installation position. The retrieval channel is connected to the limiting groove and forms two retrieval notches on two opposite sides of the limiting groove.
[0009] In one embodiment, the bottom surface of the access notch is recessed to form a relief step that passes through the side surface of the product placement block.
[0010] In one of the embodiments, at least one supporting block is disposed on the bottom surface of the air guiding groove, and the thickness of the supporting block is equal to the depth of the air guiding groove.
[0011] In one embodiment, a plurality of the support blocks are spaced apart on the bottom surface of the air guide groove, and air flow channels are formed between adjacent support blocks and between the support blocks and the inner wall of the air guide groove.
[0012] In one of the embodiments, the product placement block is provided with a plurality of countersunk holes on two opposite sides of the limiting groove, and the product placement block is fixedly connected to the base by a plurality of screws which are penetrated through the countersunk holes and inserted into the base in a one-to-one correspondence.
[0013] In one of the embodiments, an air pipe connector for receiving negative pressure from an external air pressure device is installed at the first air port.
[0014] The grinding machine fixture for sapphire special-shaped processing of the utility model can fix multiple products to be processed on the grinding machine table at the same time through vacuum adsorption, and guide the grinding wheel through the guide channel on the product placement block, so that the grinding wheel grinds the preset area on the product to process the preset special-shaped plane. In this way, the grinding wheel of the grinder can be used to perform planar special-shaped processing on sapphire glass sheets. Compared with the single-piece processing efficiency of 25min / pcs when the original rough grinding and CNC fine grinding are combined, after the implementation of this solution, the grinding machine is used instead of the rough grinding, and the CNC grinding rod is used for fine grinding after the grinding machine processing. The single-piece processing efficiency is shortened to 11min / pcs, which can significantly improve the production capacity of product planar special-shaped processing; the plane processing of the grinder can ensure the stability of the product, greatly reduce the risk of product fragmentation, and improve the product yield; after adopting the grinding machine fixture and using the grinding wheel for processing, a single grinding wheel can process 15 products, reducing the loss of consumables, reducing processing costs, while saving time for replacing accessories, and further improving the processing efficiency of the product. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural schematic diagram of a grinding machine fixture in one embodiment of the utility model;
[0016] Figure 2 This is a schematic structural diagram of a base in one embodiment of the utility model;
[0017] Figure 3 This is a structural schematic diagram of a product placement block in one embodiment of the utility model;
[0018] Figure 4 This is a schematic cross-sectional structure diagram of a product placement block in one embodiment of the utility model;
[0019] Figure 5 It is a schematic diagram of a product in one embodiment of the utility model being clamped on a grinder fixture and before being subjected to plane special-shaped processing;
[0020] Figure 6 It is a schematic diagram of a product after being clamped on a grinder fixture and subjected to plane special-shaped processing in one embodiment of the utility model. DETAILED DESCRIPTION
[0021] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.
[0022] Please combine Figure 1-4 The utility model discloses a grinding machine fixture for sapphire special-shaped processing, which is used to fix the sapphire glass sheet to the grinding machine platform so as to use the grinding wheel of the grinder to perform planar special-shaped processing on the sapphire glass sheet, so as to improve the product yield and production capacity, and reduce the product processing cost. Specifically, the grinding machine fixture 10 of this embodiment includes a base 100 for fixing on the grinding machine platform, and a plurality of mounting positions 110 are arranged side by side on the upper surface of the base 100, and a product placement block 200 is fixed on each mounting position 110, that is, a plurality of product placement blocks 200 can be fixed on the base 100 to clamp a plurality of products to be processed at one time, so that a batch can perform planar special-shaped processing on a plurality of products at the same time, thereby improving the processing efficiency. The upper surface of the product placement block 200 is provided with a limiting groove 210 for embedding the product to be processed, and a guide channel that penetrates the two opposite sides of the product placement block 200 and extends along the arrangement direction of each mounting position 110 to provide a moving channel for the grinding wheel of the grinding machine. The guide channel is connected with the limiting groove 210 and forms two guide notches 220 on the two opposite sides of the limiting groove 210. That is, the limiting groove 210 and the guide channel both penetrate the upper surface of the product placement block 200. In this embodiment, it is agreed that the arrangement direction of each mounting position 110 is the length direction of the base 100, and the direction perpendicular to the arrangement direction of each mounting position 110 in the horizontal plane is the width direction of the base 100, that is, the guide channel extends along the length direction of the base 100. Similarly, during the operation of the grinding wheel, the grinding wheel also moves along the length direction of the base 100 to contact the products on each product placement block 200 one by one, so as to process the corresponding planar special-shaped structure on the surface of the product. In order to improve the stability of product clamping, in this embodiment, the inner contour of the limiting groove 210 is adapted to the outer contour of the product. After the product is placed in the limiting groove 210, the outer surface of the product fits with the inner surface of the limiting groove 210 to avoid the problem of processing part offset caused by the swing or movement of the product in the limiting groove 210, thereby improving the yield rate of product processing. An air guide groove 230 is provided on the bottom surface of the limiting groove 210, and an air guide channel 240 is provided in the product placement block 200. The air guide channel 240 penetrates the side of the product placement block 200 to form a first air port 250 for communicating with an external air pressure device. The air guide channel 240 penetrates the upper surface of the product placement block 200 and forms a second air port 260 in the air guide groove 230. Furthermore, an air pipe joint for connecting negative pressure from an external air pressure device is installed at the first air port 250, and a vacuum suction valve is provided on the connecting pipeline between the air pipe joint and the external air pressure device.
[0023] Please combine Figure 1-6During the product clamping process, the base 100 is first fixed on the grinding machine table, and then each product placement block 200 is placed one by one in each installation position 110 and fixed, so that the guide channels of each product placement block 200 are connected and located on the same straight line. After the product placement block 200 is fixed, multiple products are embedded one by one into the limit groove 210 of each product placement block 200, and the vacuum suction valve is controlled at the same time to connect the air pipe joint with the external air pressure device so as to connect the negative pressure from the external air pressure device. Since the first air port 250, the air guide channel 240, the second air port 260 and the air guide groove 230 are connected, at this time, the second air port 260 and the air guide groove 230 also generate negative pressure. In this way, the product placed in the limit groove 210 will be tightly attached to the bottom surface of the limit groove 210 under the action of negative pressure, thereby realizing the positioning of the product. After the product is clamped, the grinding wheel of the grinder is started to move along the extension direction of the guide channel. In this way, the grinding wheel moves back and forth above the grinder fixture 10, and the sand particles on the surface of the grinding wheel contact the area on each product located in the guide channel to achieve thinning of the middle area of the product surface, thereby forming a through groove in the middle of the product surface, thereby completing the planar special-shaped processing of the sapphire glass sheet.
[0024] In one embodiment, a plurality of partition bars 120 are arranged at intervals on the upper surface of the base 100 to separate the upper surface area of the base 100 to form a plurality of mounting positions 110. For example, M partition bars 120 are arranged at intervals on the upper surface of the base 100, and the M partition bars 120 separate the upper surface area of the base 100 to form M-1 mounting positions 110, so that M-1 products can be fixedly mounted on the base 100. Preferably, in this embodiment, the distance between two adjacent partition bars 120 is equal to the width of the product placement block 200, that is, the width of the mounting position 110 is equal to the width of the product placement block 200, so that the positioning of each product placement block 200 can be achieved by setting the partition bars 120 to avoid the product placement block 200 from being offset. Furthermore, two stoppers 130 are disposed on the upper surface of the base 100 at both ends of the partition bar 120, and the stoppers 130 extend along the arrangement direction of the mounting positions 110, and a plurality of avoidance notches 140 corresponding to and connected to the mounting positions 110 are disposed at intervals on the stoppers 130. In this embodiment, the stoppers 130 are disposed to prevent the product placement block 200 from falling out of the side of the base 100. Thus, the product placement block 200 is restricted on the base 100 by the joint constraint of the partition bar 120 and the stoppers 130, and the product placement block 200 is prevented from moving on the upper surface of the base 100. In addition, in the present embodiment, the side of the product placement block 200 where the first air port 250 is located abuts against the edge of the avoidance notch 140, so that the air pipe joint installed at the first air port 250 can be extended into the avoidance notch 140. Similarly, the air pipe connected to the air pipe joint can be led out through the avoidance notch 140. In this way, the problem of difficulty in arranging the air pipe joint and the air pipe caused by the abutment of the side of the product placement block 200 where the first air port 250 is located against the dividing strip 120 can be avoided. While achieving the positioning of the product placement block 200, the difficulty in arranging the air pipe joint and the air pipe is reduced.
[0025] Furthermore, the product placement block 200 is provided with a plurality of countersunk holes 270 on two opposite sides of the limiting groove 210, and the product placement block 200 is fixedly connected to the base 100 by a plurality of screws that are inserted into the base 100 and penetrate the countersunk holes 270 one by one. In this way, the product placement block 200 and the base 100 are fixed by screws, and the position between the product placement block 200 and the base 100 along the thickness direction of the base 100 can be limited, so as to avoid the product placement block 200 leaving the base 100 from above the base 100 under the traction of external force during the product processing, so as to ensure the reliability of the product plane special-shaped processing.
[0026] It should be noted that, in this embodiment, screw holes can be opened on the base 100 to fix the base 100 on the grinding machine platform with screws, or a magnet can be embedded at the bottom of the base 100 to achieve the positioning of the base 100 by using the magnetic attraction between the magnet at the bottom of the base 100 and the machine platform. In order to further improve the reliability of the positioning of the base 100, a corresponding clamping position can also be set on the machine platform, and the horizontal position of the base 100 can be achieved by embedding the base 100 into the clamping position to prevent the base 100 from moving.
[0027] In one embodiment, the width of the guide channel is greater than the width of the through groove to be processed on the product, and the width difference between the guide channel and the through groove is no more than 1 mm (that is, the distance between the guide channel and a single side of the through groove is no more than 0.5 mm). In this way, it ensures that the grinding wheel can pass through the guide channel normally and avoids damage to the product placement block 200 caused by contact between the grinding wheel and the product placement block 200. At the same time, the problem of insufficient product support surface of the inner wall of the limit groove 210 caused by the excessive width of the guide channel can be avoided, thereby reducing the risk of fragmentation.
[0028] In one embodiment, the upper surface of the product placement block 200 is further provided with a taking passage that passes through two opposite sides of the product placement block 200 and extends perpendicular to the arrangement direction of each installation position 110. The taking passage is connected to the limiting groove 210 and forms two taking notches 211 on two opposite sides of the limiting groove 210. Furthermore, the bottom surface of the taking notch 211 is concave to form a avoiding step 212 that passes through the side of the product placement block 200. In this way, when the product is processed, fingers or corresponding tools can be inserted into the avoiding step 212 and grasp the two sides of the product to remove the product from the limiting groove 210, reducing the difficulty of unloading the product.
[0029] In one embodiment, at least one support block 280 is provided on the bottom surface of the air guide groove 230, and the thickness of the support block 280 is equal to the depth of the air guide groove 230. By providing the support block 280, the middle part of the bottom surface of the product can be supported to prevent the product from breaking under the extrusion of the grinding wheel and reduce the risk of product fragmentation. Further preferably, a plurality of support blocks 280 are arranged at intervals on the bottom surface of the air guide groove 230, and air flow channels are formed between adjacent support blocks 280 and between the support blocks 280 and the inner wall of the air guide groove 230, so that the negative pressure contact area of the lower surface of the product can be increased, thereby improving the stability of product adsorption and preventing the product from loosening during processing.
[0030] The above-mentioned grinder fixture 10 fixes multiple products to be processed on the grinder table at the same time through vacuum adsorption, and guides the grinding wheel through the guide channel on the product placement block 200, so that the grinding wheel grinds the preset area on the product to process the preset special-shaped plane. In this way, the grinding wheel of the grinder can be used to perform plane special-shaped processing on sapphire glass sheets. Compared with the single-piece processing efficiency of 25min / pcs when the original rough grinding and CNC fine grinding are combined, after the implementation of this solution, the grinding machine is used instead of the rough grinding, and its processing volume can reach 0.25mm / min, and the grinding machine processing efficiency can reach 5min / pcs. After the grinding machine processing, it is matched with the CNC grinding rod for fine grinding, and the fine grinding efficiency is 6min / pcs. In this way, the single-piece processing efficiency is shortened to 11min / pcs, which can significantly improve the production capacity of product plane special-shaped processing. The use of a grinder for plane processing can ensure the stability of the product and greatly reduce the risk of product breakage. It will be verified that after the product is clamped by the grinder fixture 10 of this embodiment and processed by the grinder, the product appearance yield is 5% to 7% higher than that of CNC processing, thereby improving the product yield. After the grinder fixture 10 is used and the grinding wheel is used for processing, a single grinding wheel can process 15 products, reducing the loss of consumables, reducing processing costs, and at the same time saving the time for replacing accessories, further improving the processing efficiency of the product.
[0031] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0032] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A grinding machine fixture for sapphire special-shaped processing, characterized in that: It comprises a base for being fixed on a grinding machine table, a plurality of mounting positions are arranged side by side on the upper surface of the base, and a product placement block is fixed on each of the mounting positions; a limiting groove for embedding the product to be processed is provided on the upper surface of the product placement block, and a guide channel which passes through two opposite side surfaces of the product placement block and extends along the arrangement direction of each mounting position to provide a moving channel for the grinding wheel of the grinder, the guide channel is connected with the limiting groove and two guiding notches are formed on two opposite sides of the limiting groove; an air guide groove is provided on the bottom surface of the limiting groove, and an air guide channel is provided in the product placement block, the air guide channel passes through the side surface of the product placement block to form a first air port for communicating with an external air pressure device, and the air guide channel passes through the upper surface of the product placement block and forms a second air port in the air guide groove.
2. The grinding machine fixture for sapphire special-shaped processing according to claim 1, characterized in that: A plurality of partition bars are arranged at intervals on the upper surface of the base to separate the upper surface area of the base to form a plurality of the installation positions.
3. The grinding machine fixture for sapphire special-shaped processing according to claim 2, characterized in that: Two blocking bars are arranged opposite to each other at two ends of the partition bar on the upper surface of the base. The blocking bars extend along the arrangement direction of each installation position, and a plurality of avoidance notches corresponding to each installation position are arranged at intervals on the blocking bars.
4. The grinding machine fixture for sapphire special-shaped processing according to claim 3, characterized in that: The side of the product placement block where the first air port is located abuts against the edge of the avoidance notch.
5. The grinding machine fixture for sapphire special-shaped processing according to claim 1, characterized in that: The upper surface of the product placement block is also provided with an access channel that passes through two opposite sides of the product placement block and extends perpendicular to the arrangement direction of each installation position. The access channel is connected to the limiting groove and forms two access notches on two opposite sides of the limiting groove.
6. The grinding machine fixture for sapphire special-shaped processing according to claim 5, characterized in that: The bottom surface of the taking-out notch is concave to form a avoidance step that runs through the side surface of the product placement block.
7. The grinding machine fixture for sapphire special-shaped processing according to claim 1, characterized in that: At least one supporting block is disposed on the bottom surface of the air guiding groove, and the thickness of the supporting block is equal to the depth of the air guiding groove.
8. The grinding machine fixture for sapphire special-shaped processing according to claim 7, characterized in that: A plurality of the support blocks are arranged at intervals on the bottom surface of the air guide groove, and air flow channels are formed between adjacent support blocks and between the support blocks and the inner wall of the air guide groove.
9. The grinding machine fixture for sapphire special-shaped processing according to claim 1, characterized in that: The product placement block is provided with a plurality of countersunk holes on two opposite sides of the limiting groove, and the product placement block is fixedly connected to the base by a plurality of screws which are penetrated through the countersunk holes and inserted into the base in a one-to-one correspondence.
10. The grinding machine fixture for sapphire special-shaped processing according to claim 1, characterized in that: The first air port is provided with an air pipe joint for receiving negative pressure from an external air pressure device.