Positioning device for quick replacement of surface grinding and polishing of thin-walled silicon carbide products

Abstract

The utility model discloses a positioning device for silicon carbide thin wall product surface grinding and polishing quick replacement relates to silicon carbide thin wall product surface processing technical field, including positioning outer disc and positioning inner disc, the inside of positioning outer disc is opened with round groove, the inside of positioning outer disc is connected in the positioning inner disc, the surface of positioning inner disc is with the center of positioning inner disc as the axle and is opened with a plurality of through grooves that annular array distribution has, the inside of through groove is connected with the positioning block, the surface of positioning block is opened with the cavity, the both sides outer wall of positioning inner disc all are opened with wedge groove, the inside of wedge groove is connected with wedge block, one side of wedge block is fixedly connected with positioning outer disc, and the side wall of one side wedge block is opened with first recess. The utility model can replace product positioning module alone, need not to replace whole device, can save material, reduce replacement cost.

Description

Technical Field

[0001] This utility model relates to the field of surface processing technology for thin-walled silicon carbide products, and in particular to a positioning device for quick replacement of grinding and polishing equipment for thin-walled silicon carbide products. Background Technology

[0002] Silicon carbide, as the core of third-generation semiconductor materials, is in increasing demand in high-end manufacturing fields such as aerospace, new energy, and electronic information due to its excellent high-temperature resistance, wear resistance, high strength, and superior electrical properties. In the precision manufacturing process of silicon carbide products, surface grinding and polishing are key steps that determine its final performance and applications.

[0003] In existing technologies, positioning devices for thin-walled silicon carbide products are mostly designed as a single unit. When processing products of different sizes or shapes, the entire positioning device must be replaced, resulting in high equipment and inventory costs. Furthermore, the replacement process for a single unit is cumbersome and requires recalibration, which severely impacts production efficiency. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model embodiment is to provide a positioning device for quick replacement of grinding and polishing of silicon carbide thin-walled products. It can solve the technical problems of the prior art, which require the replacement of the entire positioning device when processing products of different sizes or shapes, resulting in high equipment and inventory costs, cumbersome replacement process of integral structure, and the need for recalibration of the reference.

[0005] This utility model embodiment proposes a positioning device for quick replacement of silicon carbide thin-walled products after surface grinding and polishing. It includes an outer positioning disk and an inner positioning disk. The outer positioning disk has a circular groove inside, and the inner positioning disk is engaged with the inside of the outer positioning disk. Multiple through slots are arranged in a circular array around the center of the inner positioning disk on its surface. Positioning blocks are engaged inside the through slots, and cavities are formed on the surface of the positioning blocks. Wedge-shaped grooves are formed on both outer walls of the inner positioning disk, and wedge-shaped blocks are engaged inside the wedge-shaped grooves. One side of the wedge-shaped block is fixedly connected to the outer positioning disk, and a first groove is formed on the side wall of one side of the wedge-shaped block. A second groove is formed at the bottom of the wedge-shaped groove and at a position corresponding to the first groove. A first limiting mechanism is provided between the first and second grooves to restrict the relative movement of the inner and outer positioning disks. A circular hole is formed in the center of the inner positioning disk, and a second limiting mechanism is provided inside the circular hole to restrict the movement of the positioning blocks.

[0006] Preferably, the first limiting mechanism includes a first threaded rod and a slider. The side wall of the first groove is provided with a first sliding groove, and the side wall of the second groove is provided with a second sliding groove. The first threaded rod is rotatably disposed inside the first sliding groove. The end of the slider near the first threaded rod is provided with a first threaded hole. The first threaded rod is threadedly connected to the first threaded hole, and one end of the slider extends into the interior of the first sliding groove.

[0007] Preferably, the second limiting mechanism includes a second threaded rod, a second threaded hole is provided between the round hole and the through groove, the second threaded rod is threaded into the inside of the second threaded hole, and an insertion hole is provided on the positioning block near the second threaded rod, with one end of the second threaded rod being inserted into the insertion hole.

[0008] Preferably, a first knob is fixedly sleeved on one end of the first threaded rod.

[0009] Preferably, a second knob is fixedly sleeved at the end of the second threaded rod away from the positioning block.

[0010] Preferably, the longitudinal sections of the first groove, the second groove, and the slider are all rectangular, and the sidewall of the slider abuts against the inner walls of the first groove and the second groove.

[0011] Preferably, both the positioning block and the through groove have rectangular cross-sections, and the outer wall of the positioning block is engaged with the inner wall of the through groove.

[0012] The beneficial effects of the technical solution provided by this utility model embodiment include at least the following: In this embodiment of the utility model, the positioning block can be replaced quickly and individually through the second limiting mechanism without the need for a whole disassembly device: by rotating the second knob to drive the second threaded rod to rotate, so that it is disengaged from the insertion hole of the positioning block, the positioning block can be taken out from the through groove. The positioning block that is suitable for different products (the cavity matches the product shape) can be replaced. Then, the second threaded rod is rotated in the opposite direction to insert into the insertion hole of the new positioning block to complete the fixation. The replacement process does not require a whole disassembly device, saving material costs.

[0013] The first limiting mechanism enables quick locking and unlocking of the inner and outer positioning discs: rotating the first knob drives the first threaded rod to rotate, which in turn drives the slider to slide along the first and second slide grooves. When the slider is fully inserted into the first groove, the inner positioning disc can be removed from the circular groove of the outer positioning disc, facilitating overall maintenance or replacement of different sets of positioning blocks, and making the operation convenient.

[0014] The rectangular snap-fit ​​structure between the positioning block and the through groove, combined with the insertion and limiting of the second threaded rod, ensures that the positioning block does not shift during processing; the cooperation between the wedge block and the wedge groove enhances the connection stability between the inner and outer positioning discs, adapts to the vibration conditions during grinding and polishing, and ensures processing accuracy. Attached Figure Description

[0015] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this invention. Throughout the drawings, the same reference numerals denote the same components. Obviously, the drawings described below are merely some embodiments of this invention, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0016] Figure 1 This is a schematic diagram of the positioning device for quick replacement of silicon carbide thin-walled products after surface grinding and polishing, as proposed in this utility model. Figure 2 for Figure 1 Internal structure diagram; Figure 3 for Figure 2 Enlarged structural diagram of part A in the middle section; Figure 4 for Figure 2 A magnified schematic diagram of the structure of part B in the middle section.

[0017] Explanation of reference numerals in the attached drawings: 1-Locking outer disc; 2-Locking inner disc; 3-Locking block; 4-Cavity; 5-Wedge block; 6-First groove; 7-First slide rail; 8-Second slide rail; 9-Slider; 10-First threaded hole; 11-First threaded rod; 12-First knob; 13-Second threaded rod; 14-Second threaded hole; 15-Second knob. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solutions in the embodiments of this utility model, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. It should be understood that these descriptions are exemplary only and are not intended to limit the scope of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0019] Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concepts disclosed in this utility model.

[0020] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this invention.

[0021] Reference manual attached Figures 1 to 4 The positioning device for quick replacement of silicon carbide thin-walled products after surface grinding and polishing provided in this embodiment includes an outer positioning disk 1 and an inner positioning disk 2. The outer positioning disk 1 has a circular groove inside. The inner positioning disk 2 is engaged with the inside of the outer positioning disk 1. Multiple through slots are arranged in a circular array around the center of the inner positioning disk 2. Positioning blocks 3 are engaged inside the through slots. Both the positioning blocks 3 and the through slots have rectangular cross-sections. The outer wall of the positioning blocks 3 engages with the inner wall of the through slots, allowing the positioning blocks 3 to be stably engaged inside the through slots. The surface of the positioning block 3 has a cavity 4. Both outer walls of the positioning inner plate 2 have wedge-shaped grooves. A wedge block 5 is engaged inside the wedge-shaped groove. One side of the wedge block 5 is fixedly connected to the positioning outer plate 1. A first groove 6 is formed on the side wall of one side of the wedge block 5. A second groove is formed at the bottom of the wedge-shaped groove and at the position corresponding to the first groove 6. A first limiting mechanism is provided between the first groove 6 and the second groove to restrict the relative movement of the positioning inner plate 2 and the positioning outer plate 1. A circular hole is formed in the middle of the positioning inner plate 2. A second limiting mechanism is provided inside the circular hole to restrict the movement of the positioning block 3.

[0022] In a possible embodiment, the first limiting mechanism includes a first threaded rod 11 and a slider 9. The side wall of the first groove 6 is provided with a first sliding groove 7, and the side wall of the second groove is provided with a second sliding groove 8. The first threaded rod 11 is rotatably disposed inside the first sliding groove 7. The end of the slider 9 near the first threaded rod 11 is provided with a first threaded hole 10. The first threaded rod 11 is threadedly connected to the first threaded hole 10. One end of the slider 9 extends into the interior of the first sliding groove 7. One end of the first threaded rod 11 is fixedly sleeved with a first knob 12 to facilitate rotation of the first threaded rod 11. The longitudinal sections of the first groove 6, the second groove, and the slider 9 are all rectangular. The side wall of the slider 9 abuts against the inner walls of the first groove 6 and the second groove, so that the slider 9 can slide stably.

[0023] Rotating the first knob 12 drives the first threaded rod 11 to rotate, which in turn drives the slider 9 to slide along the first and second slide grooves. When the slider 9 is fully inserted into the first groove, the inner positioning plate 2 can be removed from the circular groove of the outer positioning plate 1, which facilitates overall maintenance or replacement of different sets of positioning blocks and makes the operation convenient.

[0024] In a possible embodiment, the second limiting mechanism includes a second threaded rod 13, a second threaded hole 14 is provided between the round hole and the through groove, the second threaded rod 13 is threadedly sleeved inside the second threaded hole 14, the positioning block 3 has an insertion hole on the side near the second threaded rod 13, one end of the second threaded rod 13 is inserted into the insertion hole, and a second knob 15 is fixedly sleeved on the end of the second threaded rod 13 away from the positioning block 3 to facilitate rotation of the second threaded rod 13.

[0025] Rotating the second knob 15 drives the second threaded rod 13 to rotate, disengaging it from the insertion hole of the positioning block 3. This allows the positioning block 3 to be removed from the through slot and replaced with a positioning block 3 that is compatible with different products (the cavity matches the product shape). Then, rotating the second threaded rod 13 in the opposite direction inserts it into the insertion hole of the new positioning block 3 to complete the fixing. The replacement process does not require the entire device to be disassembled, saving material costs.

[0026] In this invention, during use, the inner positioning disc 2 is aligned with the circular groove of the outer positioning disc 1, so that the wedge-shaped groove of the inner positioning disc 2 engages with the wedge-shaped block 5 of the outer positioning disc 1. The first knob 12 is rotated, causing the first threaded rod 11 to rotate, driving the slider 9 to slide along the first sliding groove 7 and the second sliding groove 8 until the slider 9 simultaneously engages with the first groove 6 and the second groove, locking the relative positions of the inner positioning disc 2 and the outer positioning disc 1. Based on the shape of the product to be processed, the corresponding positioning block 3 for the cavity 4 is selected, and the positioning block 3 is inserted into the through groove of the inner positioning disc 2 (the rectangular engaging structure ensures accurate positioning). The second knob 15 is rotated, causing the second threaded rod 13 to move along the second threaded hole 14, so that one end of the second threaded rod 13 is inserted into the insertion hole of the positioning block 3, completing the fixing of the positioning block 3. The silicon carbide thin-walled product is then placed into the cavity of the positioning block 3. Within 4 hours, the grinding and polishing equipment is started for processing. During the processing, the cooperation between the positioning block 3 and the second threaded rod 13 ensures that the product does not deviate. The cooperation between the wedge block 5 and the wedge groove enhances the overall stability of the device. When different specifications of products need to be processed, there is no need to disassemble the positioning inner plate 2. Just rotate the second knob 15 of the corresponding positioning block 3 to drive the second threaded rod 13 out of the insertion hole of the positioning block 3. The positioning block 3 can then be taken out of the through groove. Insert the positioning block 3 that is compatible with the new product into the through groove. Rotate the second knob 15 in the opposite direction to insert the second threaded rod 13 into the insertion hole of the new positioning block 3 to complete the replacement. If a set of positioning blocks needs to be replaced as a whole, the first knob 12 can be rotated to make the slider 9 completely return to the first groove 6, release the locking between the positioning inner plate 2 and the positioning outer plate 1, and take out the positioning inner plate 2 for batch replacement. The operation is convenient.

[0027] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details are described in detail in the preferred embodiments; however, those skilled in the art can fully understand this utility model without these details. Furthermore, to avoid unnecessary confusion regarding the essence of this utility model, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, and not to limit it. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A positioning device for quick replacement of surfaces during grinding and polishing of thin-walled silicon carbide products, comprising an outer positioning disk and an inner positioning disk, characterized in that, The outer positioning disk has a circular groove inside, and the inner positioning disk is engaged inside the outer positioning disk. Multiple through slots are arranged in a circular array around the center of the inner positioning disk on its surface. Positioning blocks are engaged inside the through slots, and cavities are formed on the surface of the positioning blocks. Wedge-shaped grooves are formed on both outer walls of the inner positioning disk, and wedge-shaped blocks are engaged inside the wedge-shaped grooves. One side of the wedge-shaped block is fixedly connected to the outer positioning disk, and a first groove is formed on the side wall of one side of the wedge-shaped block. A second groove is formed at the bottom of the wedge-shaped groove and at a position corresponding to the first groove. A first limiting mechanism is provided between the first and second grooves to restrict the relative movement of the inner and outer positioning disks. A circular hole is formed in the center of the inner positioning disk, and a second limiting mechanism is provided inside the circular hole to restrict the movement of the positioning blocks.

2. The positioning device for quick replacement of silicon carbide thin-walled product surface grinding and polishing according to claim 1, characterized in that, The first limiting mechanism includes a first threaded rod and a slider. The side wall of the first groove is provided with a first sliding groove, and the side wall of the second groove is provided with a second sliding groove. The first threaded rod is rotatably disposed inside the first sliding groove. The end of the slider near the first threaded rod is provided with a first threaded hole. The first threaded rod is threadedly connected to the first threaded hole. One end of the slider extends into the interior of the first sliding groove.

3. The positioning device for quick replacement of silicon carbide thin-walled product surface grinding and polishing according to claim 1, characterized in that, The second limiting mechanism includes a second threaded rod, a second threaded hole is provided between the round hole and the through groove, the second threaded rod is threaded into the inside of the second threaded hole, and an insertion hole is provided on the positioning block near the second threaded rod, one end of the second threaded rod is inserted into the insertion hole.

4. The positioning device for quick replacement of silicon carbide thin-walled product surface grinding and polishing according to claim 2, characterized in that, A first knob is fixedly sleeved at one end of the first threaded rod.

5. The positioning device for quick replacement of silicon carbide thin-walled product surface grinding and polishing according to claim 3, characterized in that, The second threaded rod is fixedly fitted with a second knob at the end away from the positioning block.

6. The positioning device for quick replacement of silicon carbide thin-walled product surface grinding and polishing according to claim 3, characterized in that, The longitudinal sections of the first groove, the second groove, and the slider are all rectangular, and the sidewall of the slider abuts against the inner walls of the first groove and the second groove.

7. The positioning device for quick replacement of silicon carbide thin-walled product surface grinding and polishing according to claim 1, characterized in that, Both the positioning block and the through groove have rectangular cross-sections, and the outer wall of the positioning block is engaged with the inner wall of the through groove.

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