Inner wall polishing jig for silicon carbide composite ceramic shaft sleeve

Abstract

The utility model relates to the technical field of polishing jigs, in particular to an inner wall polishing jig for a silicon carbide composite ceramic shaft sleeve, which comprises a polishing table and a ceramic shaft sleeve part, the ceramic shaft sleeve part is positioned above the polishing table, a fixing pipe is fixedly assembled on the upper surface of the polishing table, and a support is slidably connected to the inner wall of the fixing pipe. A first electric push rod is fixedly assembled on the upper surface of the grinding table, the output end of the first electric push rod is fixedly connected with the support, a driving motor is fixedly assembled on the upper surface of the support, a mounting frame is fixedly assembled at the output end of the driving motor, and a two-way screw is rotationally connected into the mounting frame. According to the polishing jig, the second electric push rods and the pressing plate are arranged, when the ceramic shaft sleeve pieces made of silicon carbide composite ceramic materials are polished, the ceramic shaft sleeve pieces of different sizes can be limited by controlling the elongation of the output ends of the three second electric push rods, and therefore the practicability of the jig is improved.

Description

Technical Field

[0001] This utility model relates to the field of grinding fixture technology, and in particular to a grinding fixture for the inner wall of a silicon carbide composite ceramic bushing. Background Technology

[0002] Silicon carbide composite ceramic bushings combine the high hardness, wear resistance, corrosion resistance, heat resistance and low friction properties of silicon carbide. When producing silicon carbide composite ceramic bushings, grinding equipment is needed to grind the burrs on the inner wall of the silicon carbide composite ceramic bushing. During grinding, a jig is needed to fix the position of the silicon carbide composite ceramic bushing.

[0003] The above-mentioned and existing technologies have the following drawbacks: when using a fixture to fix the position of the silicon carbide composite ceramic bushing, the fixture's fixed structure means that it can only limit the position of a single specification of silicon carbide composite ceramic bushing, thereby reducing the applicability of the fixture.

[0004] Therefore, a grinding fixture for the inner wall of a silicon carbide composite ceramic bushing is proposed. Utility Model Content

[0005] The purpose of this utility model is to solve the problem that the fixture can only limit the movement of silicon carbide composite ceramic bushings of a single specification due to the fixed structure of the fixture, and to propose a fixture for grinding the inner wall of silicon carbide composite ceramic bushings.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a grinding fixture for the inner wall of a silicon carbide composite ceramic bushing, comprising a grinding table and a ceramic bushing assembly, wherein the ceramic bushing assembly is located above the grinding table, a fixing tube is fixedly mounted on the upper surface of the grinding table, a bracket is slidably connected to the inner wall of the fixing tube, a first electric push rod is fixedly mounted on the upper surface of the grinding table, the output end of the first electric push rod is fixedly connected to the bracket, a drive motor is fixedly mounted on the upper surface of the bracket, a mounting frame is fixedly mounted on the output end of the drive motor, a bidirectional screw is rotatably connected inside the mounting frame, a slider is threadedly connected to the outer circumferential surface of the bidirectional screw, a grinding rod is fixedly mounted on the lower surface of the slider, a servo motor is fixedly mounted on the outer wall of the mounting frame, the servo motor is fixedly connected to the bidirectional screw, and three second electric push rods are fixedly mounted on the upper surface of the grinding table, with pressure plates fixedly mounted on the output ends of the second electric push rods.

[0007] Preferably, a counterweight is fixedly mounted on the outer wall of the mounting frame.

[0008] Preferably, a clamping plate is fixedly fitted to the inner wall of the mounting frame, and the clamping plate is slidably connected to the slider.

[0009] Preferably, the vertical cross-section of the clamping plate is L-shaped.

[0010] Preferably, the surface of the grinding table is provided with a T-slot, and a T-plate is fixedly mounted on the lower surface of the pressure plate, with the T-slot and the T-plate being slidably connected.

[0011] Preferably, a connecting plate is slidably connected to the inner wall of the pressure plate, and a rubber pad is fixedly fitted to the surface of the connecting plate.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] In this invention, by setting a second electric actuator and a pressure plate, when grinding a ceramic shaft assembly made of silicon carbide composite ceramic material, the extension of the output ends of the three second electric actuators can be controlled to limit the ceramic shaft assembly of different sizes, thereby improving the practicality of the fixture. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the disassembled structure of the fixing tube of this utility model;

[0016] Figure 3 This is a schematic diagram of the disassembled structure at the mounting frame of this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the second electric actuator of this utility model;

[0018] Figure 5 This is a schematic diagram of the disassembled structure of the second electric actuator of this utility model.

[0019] Legend: 1. Grinding table; 2. Ceramic shaft assembly; 3. Fixing tube; 4. Bracket; 5. First electric actuator; 6. Drive motor; 7. Mounting frame; 8. Bidirectional screw; 9. Servo motor; 10. Slider; 11. Grinding rod; 12. Counterweight; 13. Clamping plate; 14. Second electric actuator; 15. Pressure plate; 16. T-shaped plate; 17. T-slot; 18. Connecting plate; 19. Rubber pad. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] like Figures 1-5 As shown, this utility model provides a grinding fixture for the inner wall of a silicon carbide composite ceramic bushing, including a grinding table 1 and a ceramic bushing assembly 2. The ceramic bushing assembly 2 is located above the grinding table 1. A fixing tube 3 is fixedly mounted on the upper surface of the grinding table 1. A bracket 4 is slidably connected to the inner wall of the fixing tube 3. A first electric push rod 5 is fixedly mounted on the upper surface of the grinding table 1. The output end of the first electric push rod 5 is fixedly connected to the bracket 4. A drive motor 6 is fixedly mounted on the upper surface of the bracket 4. A mounting frame 7 is fixedly mounted on the output end of the drive motor 6. A bidirectional screw 8 is rotatably connected inside the mounting frame 7. A slider 10 is threadedly connected to the outer circumferential surface of the bidirectional screw 8. A grinding rod 11 is fixedly mounted on the lower surface of the slider 10. A servo motor 9 is fixedly mounted on the outer wall of the mounting frame 7. The servo motor 9 is fixedly connected to the bidirectional screw 8. Three second electric push rods 14 are fixedly mounted on the upper surface of the grinding table 1. A pressure plate 15 is fixedly mounted on the output end of the second electric push rod 14. A counterweight 12 is fixedly mounted on the outer wall of the mounting frame 7.

[0023] The inner wall of the mounting frame 7 is fixedly fitted with a clamping plate 13, which is slidably connected to the slider 10. The vertical cross section of the clamping plate 13 is "L" shaped. The surface of the grinding table 1 is provided with a T-slot 17. The lower surface of the pressure plate 15 is fixedly fitted with a T-plate 16, which is slidably connected to the T-slot 17. The inner wall of the pressure plate 15 is slidably connected with a connecting plate 18, and the surface of the connecting plate 18 is fixedly fitted with a rubber pad 19.

[0024] The overall working principle is as follows: When grinding the silicon carbide composite ceramic shaft assembly 2, the ceramic shaft assembly 2 is placed on the grinding table 1, and then the second electric actuator 14 is turned on. The extension of the output end of the second electric actuator 14 will drive the pressure plate 15 to move. The movement of the pressure plate 15 will drive the connecting plate 18 to move. The movement of the connecting plate 18 will cause the rubber pad 19 to press against the outer wall of the ceramic shaft assembly 2. The rubber pad 19 can increase the friction between the pressure plate 15 and the ceramic shaft assembly 2 and improve the fitting effect, thereby improving the limiting effect on the ceramic shaft assembly 2. Therefore, by controlling the extension of the output ends of the three second electric actuators 14, the ceramic shaft assembly 2 of different sizes can be limited. The movement of the pressure plate 15 will drive the T-shaped plate 16 to slide along the inner wall of the T-slot 17. The T-shaped plate 16 and the T-slot 17 can restrict the movement path of the pressure plate 15. Then, the first electric actuator is controlled. The output end of rod 5 retracts, causing bracket 4 to move downwards. The movement of bracket 4 drives drive motor 6 to move, which in turn drives mounting frame 7 to move. The bidirectional screw 8, following the movement of mounting frame 7, drives slider 10 to move. Slider 10 then drives grinding rod 11 into ceramic shaft assembly 2. Afterwards, the output end of servo motor 9 is controlled to rotate. The bidirectional screw 8, through its thread, drives the two sliders 10 to move away from each other until grinding rod 11 abuts against the inner wall of ceramic shaft assembly 2. During this process, slider 10 slides along the surface of clamping plate 13. Clamping plate 13 restricts the movement path of slider 10 and prevents slider 10 from rotating with bidirectional screw 8. Then, drive motor 6 is turned on. The rotation of the output end of drive motor 6 drives mounting frame 7 to rotate, ultimately causing grinding rod 11 to slide along the inner wall of ceramic shaft assembly 2, thereby grinding the inner wall of ceramic shaft assembly 2.

[0025] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A grinding fixture for the inner wall of a silicon carbide composite ceramic bushing, comprising a grinding table (1) and a ceramic bushing assembly (2), characterized in that: The ceramic shaft assembly (2) is located above the grinding table (1). A fixing tube (3) is fixedly mounted on the upper surface of the grinding table (1). A bracket (4) is slidably connected to the inner wall of the fixing tube (3). A first electric push rod (5) is fixedly mounted on the upper surface of the grinding table (1). The output end of the first electric push rod (5) is fixedly connected to the bracket (4). A drive motor (6) is fixedly mounted on the upper surface of the bracket (4). A mounting frame (7) is fixedly mounted on the output end of the drive motor (6). A bidirectional screw (8) is rotatably connected inside the mounting frame (7). A slider (10) is threadedly connected to the outer circumferential surface of the bidirectional screw (8). A grinding rod (11) is fixedly mounted on the lower surface of the slider (10). A servo motor (9) is fixedly mounted on the outer wall of the mounting frame (7). The servo motor (9) is fixedly connected to the bidirectional screw (8). Three second electric push rods (14) are fixedly mounted on the upper surface of the grinding table (1). A pressure plate (15) is fixedly mounted on the output end of the second electric push rods (14).

2. The grinding fixture for the inner wall of a silicon carbide composite ceramic bushing according to claim 1, characterized in that: The outer wall of the mounting frame (7) is fixedly fitted with a counterweight (12).

3. The grinding fixture for the inner wall of a silicon carbide composite ceramic bushing according to claim 1, characterized in that: The inner wall of the mounting frame (7) is fixedly fitted with a clamping plate (13), which is slidably connected to the slider (10).

4. The grinding fixture for the inner wall of a silicon carbide composite ceramic bushing according to claim 3, characterized in that: The vertical cross-section of the clamp (13) is "L" shaped.

5. The grinding fixture for the inner wall of a silicon carbide composite ceramic bushing according to claim 1, characterized in that: The surface of the grinding table (1) is provided with a T-slot (17), and a T-plate (16) is fixedly assembled on the lower surface of the pressure plate (15). The T-slot (17) and the T-plate (16) are slidably connected.

6. The grinding fixture for the inner wall of a silicon carbide composite ceramic bushing according to claim 1, characterized in that: The inner wall of the pressure plate (15) is slidably connected to a connecting plate (18), and a rubber pad (19) is fixedly mounted on the surface of the connecting plate (18).

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