Ceramic column grinding equipment and method thereof

Abstract

The invention discloses ceramic column grinding equipment and a method thereof, and belongs to the technical field of ceramic column rotating surface grinding. The ceramic column grinding equipment comprises a machine table, a clamping mechanism is arranged at one end of the machine table, a plurality of clamping jaws are installed on the circumference of the clamping mechanism, one end of each clamping jaw is used for clamping a ceramic column body, and a base is fixedly installed at the other end of the machine table; a grinding motor is movably arranged on the base, and a grinding disc used for grinding the end of the ceramic column body is fixedly installed at the output end of the grinding motor. According to the ceramic column body end grinding device, the clamping mechanism is arranged to adjust the clamping jaws, the moving mechanism adjusts the position of the grinding disc, and therefore clamping, fixing and grinding treatment of the ends of ceramic column bodies with different lengths or different diameters are achieved, and the clamping force is fed back in real time through a pressure sensor; the problem that a traditional mechanical clamping device is uneven in clamping force due to the diameter difference of the ceramic column bodies is solved, and the device is suitable for compatible machining of the ceramic column bodies with different diameters.

Description

Technical Field

[0001] The invention belongs to the technical field of ceramic column rotating surface grinding, and in particular relates to a ceramic column grinding device and a method thereof. Background Art

[0002] A ceramic column is a columnar object made of ceramic material as the main component. Commonly used materials include alumina ceramics, zirconia ceramics, silicon nitride ceramics, etc. During processing, ceramic powder is generally mixed with an appropriate amount of additives to make a blank with good forming properties. The blank is then made into a ceramic column blank of the desired shape through dry pressing, static pressing, injection molding, etc. Finally, the blank is placed in a high-temperature furnace for sintering to densify it and obtain higher strength and performance. After sintering, post-processing processes such as grinding and polishing are required as needed to meet specific dimensional accuracy and surface quality requirements.

[0003] When grinding one end of a ceramic column and the rotating surface around it, the existing ceramic column grinding device clamps the ceramic column through a clamping mechanism and then grinds it with a grinding disc. However, traditional clamping mechanisms are mostly designed with fixed specifications and are difficult to be compatible with ceramic columns of different diameters or lengths. In addition, ceramic materials are very brittle. Traditional rigid clamping methods are prone to uneven or excessive clamping force, which can cause surface damage and edge cracking of the column. If the clamping force is too small, it will slip during the grinding vibration, affecting the processing accuracy. Summary of the Invention

[0004] In response to the problems existing in the prior art, the present invention provides a ceramic column grinding device and method thereof, which has the advantages of multi-functional adjustment, wide application range and adaptive adjustment of clamping force. It solves the problems that the clamping mechanism of the existing grinding device has poor compatibility, and the rigid clamping method is prone to cause surface damage and edge cracking of the column due to uneven or excessive clamping force, while if the clamping force is too small, it will slip during the grinding vibration, affecting the processing accuracy.

[0005] The present invention is implemented as follows: a ceramic column grinding device includes a machine table, a clamping mechanism is provided at one end of the machine table, a plurality of jaws are installed on the circumference of the clamping mechanism, a grinding block is fixedly connected to one end of the jaw, and is used to clamp the ceramic column body or grind the rotating surface of the ceramic column body, a base is fixedly installed at the other end of the machine table, a grinding motor is movably provided on the base, a grinding disk is fixedly installed at the output end of the grinding motor, and a grinding groove is provided at the center of the grinding disk for grinding the end of the ceramic column body and the rotating surface.

[0006] As a preferred embodiment of the present invention, the clamping mechanism includes a clamping motor, the clamping motor is fixedly installed on one side of the machine platform, the output end of the clamping motor is fixedly connected to a worm, and a plurality of worm wheels are engaged with the worm.

[0007] As a preferred embodiment of the present invention, the plurality of worm gears are distributed circumferentially, the worm gears are rotatably mounted on a fixed seat, and the fixed seat is fixedly mounted on a side wall of the machine.

[0008] As a preferred embodiment of the present invention, one end of the worm away from the clamping motor is rotatably connected to a turntable, one side of the turntable is fixedly connected to a spring and a telescopic rod, and the spring is sleeved on the telescopic rod.

[0009] As a preferred embodiment of the present invention, the spring and the telescopic rod are fixedly connected to an end thereof away from the turntable with a positioning conical sleeve, and the positioning conical sleeve is sleeved on one end of the ceramic column body, and the inner wall of the sleeve abuts against the ceramic column body.

[0010] As a preferred embodiment of the present invention, one end of the clamp is fixedly connected to the worm gear, and the other end is fixedly connected to the grinding block. A pressure sensor is provided in the middle of the grinding block, and the pressure sensor is fixedly installed in the clamp.

[0011] As a preferred embodiment of the present invention, the moving mechanism includes a screw and a guide rod, the screw is rotatably installed on one side of the base, the guide rod is fixedly installed on the other side of the base, a moving motor is fixedly installed at one end of the base, and the output end of the moving motor is fixedly connected to the screw.

[0012] As a preferred embodiment of the present invention, a movable frame is movably connected to the lead screw and the guide rod, the grinding motor is fixedly mounted on the movable frame, and the grinding disc is rotatably mounted on one side of the movable frame.

[0013] As a preferred embodiment of the present invention, the end of the telescopic rod away from the turntable is slidably inserted into the positioning conical sleeve, and the end of the telescopic rod is fixedly connected with a pressure block, which is located inside the positioning conical sleeve and can be pressed tightly against the end of the ceramic column body.

[0014] A ceramic column grinding method, applicable to the ceramic column grinding equipment, comprises the following steps: Insert one end of the ceramic column body into the grinding disc and the other end into the positioning conical sleeve. During the operation, push the positioning conical sleeve close to the worm, and the spring contracts under the force. When the ceramic column body is released, the spring, under the action of its elastic force, presses the positioning conical sleeve against the ceramic column body, so that the two ends of the ceramic column body are pressed against the positioning conical sleeve and the grinding disc respectively, realizing the preliminary positioning of the ceramic column body; Then the clamping motor is started, and the worm drives the circumferentially distributed worm gear to rotate, driving the clamping jaws to retract toward the center, clamping the ceramic column body through the grinding block, and the pressure sensor monitors the clamping force in real time; Start the grinding motor to make the grinding disc rotate at high speed, and grind the end of the ceramic column body through the conical shape of the grinding disc. During the grinding process, the grinding disc is driven to move by starting the moving motor to adjust the contact pressure and grinding depth between the grinding disc and the end of the ceramic column body.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention achieves positioning before clamping by cooperating with the positioning tapered sleeve and the clamping claw, thereby improving the clamping accuracy and operational safety of ceramic column bodies of different sizes, utilizing the self-locking feature to ensure clamping stability, and ensuring the coaxiality of the ceramic column body by uniform circumferential force.

[0016] The present invention uses a pressure sensor to provide real-time feedback on the clamping force, thereby solving the problem of uneven clamping force caused by differences in the diameters of the ceramic column bodies in traditional mechanical clamping devices, and is suitable for compatible processing of ceramic column bodies with different diameters.

[0017] The present invention accurately adjusts the contact pressure and grinding depth between the grinding disc and the end of the ceramic column body through a moving mechanism, and is suitable for the automated processing of ceramic columns of various specifications.

[0018] The present invention adjusts the clamping claws by arranging a clamping mechanism and adjusts the position of the grinding disc by a moving mechanism, thereby achieving clamping, fixing and grinding of the ends of ceramic column bodies of different lengths or diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the top view of the structure of the present invention; Figure 3 For the present invention Figure 2 Schematic diagram of the three-dimensional structure of the AA section; Figure 4 It is a schematic diagram of a partial three-dimensional structure of the clamping mechanism of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the moving mechanism and the grinding disc of the present invention.

[0020] In the figure: 1. Machine table; 2. Clamping mechanism; 21. Clamping motor; 22. Worm; 23. Worm gear; 24. Fixed seat; 25. Turntable; 26. Spring; 27. Telescopic rod; 28. Positioning tapered sleeve; 3. Moving mechanism; 31. Movable frame; 32. Lead screw; 33. Guide rod; 34. Moving motor; 4. Clamping jaw; 41. Grinding block; 42. Pressure sensor; 5. Ceramic column body; 6. Base; 7. Grinding motor; 8. Grinding disc; 9. Grinding groove; 10. Press block. DETAILED DESCRIPTION

[0021] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0022] The structure of the present invention is described in detail below with reference to the accompanying drawings.

[0023] like Figures 1 to 5 As shown, a ceramic column grinding device provided by an embodiment of the present invention includes a machine 1, a clamping mechanism 2 is provided at one end of the machine 1, a plurality of clamping claws 4 are installed circumferentially on the clamping mechanism 2, one end of the clamping claw 4 is used to clamp the ceramic column body 5, a base 6 is fixedly installed at the other end of the machine 1, a grinding motor 7 is movably provided on the base 6, a grinding disc 8 is fixedly installed at the output end of the grinding motor 7, and a grinding groove 9 for grinding the end of the ceramic column body 5 and the rotating surface is provided at the center of the grinding disc 8. The clamping mechanism 2 fixes the ceramic column body 5 so that its axis is aligned with the center of the grinding groove 9 of the grinding disc 8, and the moving mechanism 3 drives the grinding motor 7 to move in the horizontal direction so that the grinding groove 9 contacts the end of the ceramic column and the rotating surface and rotates and grinds. Preferably, the grinding groove 9 is a step groove with several different diameters, so that it can be suitable for ceramic columns of different diameters.

[0024] The clamping mechanism 2 includes a clamping motor 21, which is fixedly installed on one side of the machine 1. The output end of the clamping motor 21 is fixedly connected to a worm 22, and a plurality of worm gears 23 are engaged with the worm 22. The plurality of worm gears 23 are distributed in a circle. The worm gears 23 are rotatably installed on a fixed seat 24, and the fixed seat 24 is fixedly installed on the side wall of the machine 1.

[0025] After the clamping motor 21 is started, the worm 22 rotates and drives the worm wheel 23 to rotate synchronously. Since the worm wheel 23 is distributed in a circle and is fixedly connected to the clamping jaw 4, the rotation of the worm wheel 23 will drive the clamping jaw 4 to shrink toward the center or open outward, thereby clamping or loosening the ceramic column body 5. The worm wheel 23 and worm 22 transmission structure has a self-locking function, which can ensure the stable position of the clamping jaw 4 after clamping, and avoid the loosening of the ceramic column body 5 due to vibration during the grinding process. At the same time, the circumferentially distributed worm wheel 23 drives the clamping jaw 4 to bear force evenly, thereby ensuring the coaxiality of the clamping of the ceramic column body 5.

[0026] The end of the worm 22 away from the clamping motor 21 is rotatably connected to the turntable 25, and a spring 26 and a telescopic rod 27 are fixedly connected to one side of the turntable 25. The spring 26 is sleeved on the telescopic rod 27, and the end of the spring 26 and the telescopic rod 27 away from the turntable 25 is connected to a positioning conical sleeve 28. The positioning conical sleeve 28 is sleeved on one end of the ceramic column body 5, and the inner wall is in contact with the ceramic column body 5.

[0027] When installing the ceramic column, first insert one end of it into the grinding disc 8 and the other end into the positioning conical sleeve 28. During the operation, push the positioning conical sleeve 28 to make it close to the worm 22, and the spring 26 will shrink under the force. When the ceramic column body 5 is released, the spring 26, under the action of its elastic force, makes the positioning conical sleeve 28 press against the ceramic column body 5, so that the two ends of the ceramic column body 5 are respectively pressed against the positioning conical sleeve 28 and the grinding disc 8, thereby realizing the preliminary positioning of the ceramic column body 5. Then the clamping motor 21 drives the clamping jaw 4 to clamp the ceramic column body 5, thereby improving the stability of the ceramic column body 5.

[0028] The positioning conical sleeve 28 cooperates with the conical surface of the end of the ceramic column, and uses the floating characteristics of the spring 26 to automatically adapt to the length difference of the ceramic column, thereby improving the clamping efficiency. After manual preliminary positioning and then mechanical clamping, the position deviation of the clamping jaw 4 during direct clamping can be reduced. During mechanical clamping, manual work is kept away from the clamping area, thereby improving production safety.

[0029] One end of the clamping jaw 4 is fixedly connected to the worm gear 23 , and the other end is fixedly connected to a grinding block 41 . A pressure sensor 42 is provided in the middle of the grinding block 41 , and the pressure sensor 42 is fixedly installed in the clamping jaw 4 .

[0030] The grinding surface of the grinding block 41 is an arc surface. When the clamping jaws 4 clamp the ceramic column, the grinding block 41 increases the friction of the contact surface to prevent the ceramic column from slipping during the grinding process of the grinding disc 8. The pressure sensor 42 monitors and feedbacks the clamping force in real time, and cooperates with the clamping mechanism 2 (for example, connected to the signal of the clamping motor 21) to automatically adjust the clamping force. If the diameter of the clamped ceramic column body 5 increases, the clamping force increases to prevent the small-diameter ceramic column body 5 from being clamped or the large-diameter column from slipping, thereby solving the problem of uneven clamping force caused by the difference in the diameter of the ceramic column body 5 of the traditional mechanical clamping device, and is suitable for compatible processing of ceramic column bodies 5 with different diameters.

[0031] The moving mechanism 3 includes a lead screw 32 and a guide rod 33. The lead screw 32 is rotatably mounted on one side of the base 6, and the guide rod 33 is fixedly mounted on the other side of the base 6. A moving motor 34 is fixedly mounted on one end of the base 6, and the output end of the moving motor 34 is fixedly connected to the lead screw 32. A movable frame 31 is movably connected to the lead screw 32 and the guide rod 33. The grinding motor 7 is fixedly mounted on the movable frame 31, and the grinding disc 8 is rotatably mounted on one side of the movable frame 31.

[0032] The movable motor 34 drives the lead screw 32 to rotate through the coupling, and the lead screw 32 nut pair converts the rotational motion into the linear motion of the movable frame 31. The guide rod 33 ensures the linear accuracy of the movement of the movable frame 31. By controlling the speed and stroke of the movable motor 34, the contact pressure and grinding depth between the grinding disc 8 and the end of the ceramic column body 5 can be accurately adjusted.

[0033] Furthermore, the clamping mechanism 2 can clamp the outer circumference of the ceramic column body 5 through the clamping jaws 4, so that the grinding grooves 9 grind the ends and rotating surface of the ceramic column body 5. The specific process has been described in detail in the above process and will not be repeated here. In addition, the clamping mechanism 2 can also cooperate with the grinding disc 8 to clamp the two ends of the ceramic column body 5, and the clamping jaws 4 are slightly opened. At this time, the grinding disc 8 drives the ceramic column body 5 to rotate, so that the grinding block 41 grinds the outer circumference of the ceramic column body 5. The details are as follows: The end of the telescopic rod 27 away from the turntable 25 is slidably inserted into the positioning conical sleeve 28, and the end of the telescopic rod 27 is fixedly connected to a pressure block 10. The pressure block 10 is located inside the positioning conical sleeve 28 and can be pressed tightly against the end of the ceramic column body 5.

[0034] The grinding block 41 has two functions: first, under the action of the clamping jaws 4, the grinding block 41 can clamp the ceramic column body 5, preventing the ceramic column body 5 from rotating, thereby grinding the end of the ceramic column body 5 and the circumferential surface around the end; second, when the clamping jaws 4 are slightly opened, the grinding block 41 no longer clamps the ceramic column body 5. At this time, the movable frame 31 moves toward the side close to the ceramic column body 5, thereby squeezing the ceramic column body 5 and compressing the positioning tapered sleeve 28 until the telescopic rod 27 reaches its shortest state, so that the pressing block 10 can press the end of the ceramic column body 5. At this time, the degree of fixation and clamping of the ceramic column body 5 is improved. The grinding disc 8 can drive the ceramic column body 5 to rotate, and then the grinding block 41 grinds the outer circumference of the ceramic column body 5. The specific force can be controlled by the pressure sensor 42. In a specific implementation, the telescopic rod 27 can be composed of a rectangular sleeve and a rectangular plug, and the rectangular plug is slidably set in the rectangular sleeve.

[0035] A ceramic column grinding method, applicable to the ceramic column grinding equipment, comprises the following steps: Step 1: Insert one end of the ceramic column body 5 into the grinding disc 8 and the other end into the positioning conical sleeve 28. During the operation, push the positioning conical sleeve 28 to make it close to the worm 22, and the spring 26 is forced to contract. When the ceramic column body 5 is released, the spring 26, under the action of its elastic force, causes the positioning conical sleeve 28 to press against the ceramic column body 5, so that the two ends of the ceramic column body 5 are respectively pressed against the positioning conical sleeve 28 and the grinding disc 8, thereby achieving the preliminary positioning of the ceramic column body 5; Step 2: Then, the clamping motor 21 is started, and the worm 22 drives the circumferentially distributed worm gear 23 to rotate, driving the clamping jaws 4 to retract toward the center, clamping the ceramic column body 5 through the grinding block 41, and the pressure sensor 42 monitors the clamping force in real time; Step 3, start the grinding motor 7 to make the grinding disc 8 rotate at high speed, and grind the end of the ceramic column body 5 through the conical shape of the grinding disc 8. During the grinding process, the grinding disc 8 is driven to move by starting the moving motor 34 to adjust the contact pressure and grinding depth between the grinding disc 8 and the end of the ceramic column body 5.

[0036] Working principle of the present invention: One end of the ceramic column body 5 is inserted into the grinding disc 8, and the other end is inserted into the positioning conical sleeve 28. During the operation, the positioning conical sleeve 28 is pushed to make it close to the worm 22, and the spring 26 is forced to shrink. When the ceramic column body 5 is released, the spring 26, under the action of its elastic force, causes the positioning conical sleeve 28 to press against the ceramic column body 5, so that the two ends of the ceramic column body 5 are respectively pressed against the positioning conical sleeve 28 and the grinding disc 8, thereby achieving the preliminary positioning of the ceramic column body 5. Then the clamping motor 21 is started, and the worm 22 drives the circumferentially distributed worm gear 23 to rotate, driving the clamping jaw 4 to retract toward the center, clamping the ceramic column body 5 through the grinding block 41, and the pressure sensor 42 monitors the clamping force in real time to ensure that the clamping force is uniform and moderate to avoid pinching or slipping. The grinding motor 7 is started to make the grinding disc 8 rotate at high speed, and the end of the ceramic column body 5 is ground by the conical shape of the grinding disc 8. During the grinding process, the grinding disc 8 is driven to move by the moving motor 34 to accurately adjust the contact pressure and grinding depth between the grinding disc 8 and the end of the ceramic column body 5. Furthermore, the clamping mechanism 2 can clamp the outer circumference of the ceramic column body 5 via the jaws 4, allowing the grinding grooves 9 to grind the ends and rotating surface of the ceramic column body 5. The specific process has been described in detail above. Furthermore, the clamping mechanism 2 can also cooperate with the grinding disc 8 to clamp the ends of the ceramic column body 5. With the jaws 4 slightly open, the grinding disc 8 drives the ceramic column body 5 to rotate, causing the grinding blocks 41 to grind the outer circumference of the ceramic column body 5.

[0037] To sum up: This ceramic column grinding equipment and method, through the positioning conical sleeve 28 and the clamping claw 4, realizes positioning first and then clamping, improves the clamping accuracy and operation safety of ceramic column bodies 5 of different sizes, uses the self-locking characteristics to ensure clamping stability, and uniform force on the circumference to ensure the coaxiality of the ceramic column body 5. The pressure sensor 42 provides real-time feedback on the clamping force, which solves the problem of uneven clamping force caused by the diameter difference of the ceramic column body 5 of the traditional mechanical clamping device. It is suitable for compatible processing of ceramic column bodies 5 of different diameters, and accurately adjusts the contact pressure and grinding depth between the grinding disc 8 and the end of the ceramic column body 5 through the moving mechanism 3 to adapt to the automated processing of ceramic columns of multiple specifications.

[0038] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0039] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A ceramic column grinding device, comprising a machine (1), characterized in that: A clamping mechanism (2) is provided at one end of the machine (1), and a plurality of clamping claws (4) are installed on the circumference of the clamping mechanism (2). One end of the clamping claw (4) is fixedly connected to a grinding block (41) for clamping the ceramic column body (5) or grinding the rotating surface of the ceramic column body (5). A base (6) is fixedly installed at the other end of the machine (1), and a grinding motor (7) is movably provided on the base (6). A grinding disc (8) is fixedly installed at the output end of the grinding motor (7), and a grinding groove (9) is provided at the center of the grinding disc (8) for grinding the end of the ceramic column body (5) and the rotating surface.

2. The ceramic column grinding device according to claim 1, characterized in that: The clamping mechanism (2) comprises a clamping motor (21), the clamping motor (21) being fixedly mounted on one side of the machine platform (1), the output end of the clamping motor (21) being fixedly connected to a worm (22), and a plurality of worm wheels (23) being meshed on the worm (22).

3. The ceramic column grinding device according to claim 2, wherein: The plurality of worm wheels (23) are distributed in a circumferential manner. The worm wheels (23) are rotatably mounted on a fixed seat (24), and the fixed seat (24) is fixedly mounted on a side wall of the machine platform (1).

4. The ceramic column grinding device according to claim 2, wherein: One end of the worm (22) away from the clamping motor (21) is rotatably connected to a turntable (25), and one side of the turntable (25) is fixedly connected to a spring (26) and a telescopic rod (27), and the spring (26) is sleeved on the telescopic rod (27).

5. The ceramic column grinding device according to claim 4, characterized in that: One end of the spring (26) and the telescopic rod (27) away from the turntable (25) is connected to a positioning conical sleeve (28), and the positioning conical sleeve (28) is sleeved on one end of the ceramic column body (5), and the inner wall of the positioning conical sleeve is in contact with the ceramic column body (5).

6. The ceramic column grinding device according to claim 5, characterized in that: One end of the clamping jaw (4) is fixedly connected to the worm gear (23), and a pressure sensor (42) is provided in the middle of the grinding block (41). The pressure sensor (42) is fixedly installed in the clamping jaw (4).

7. The ceramic column grinding device according to claim 1, wherein: The moving mechanism (3) includes a lead screw (32) and a guide rod (33), wherein the lead screw (32) is rotatably mounted on one side of the base (6), and the guide rod (33) is fixedly mounted on the other side of the base (6). A moving motor (34) is fixedly mounted on one end of the base (6), and an output end of the moving motor (34) is fixedly connected to the lead screw (32).

8. The ceramic column grinding device according to claim 7, wherein: The lead screw (32) and the guide rod (33) are movably connected to a movable frame (31), the grinding motor (7) is fixedly mounted on the movable frame (31), and the grinding disc (8) is rotatably mounted on one side of the movable frame (31).

9. The ceramic column grinding device according to claim 6, wherein: The end of the telescopic rod (27) away from the turntable (25) is slidably inserted into the positioning conical sleeve (28), and the end of the telescopic rod (27) is fixedly connected to a pressure block (10), and the pressure block (10) is located inside the positioning conical sleeve (28). The pressure block (10) can be pressed tightly against the end of the ceramic column body (5).

10. A ceramic column grinding method, characterized in that: The ceramic column grinding device according to any one of claims 1 to 9 comprises the following steps: Insert one end of the ceramic column body (5) into the grinding disc (8), and insert the other end into the positioning conical sleeve (28). During the operation, push the positioning conical sleeve (28) to make it close to the worm (22), and the spring (26) is forced to shrink. When the ceramic column body (5) is released, the spring (26) presses the positioning conical sleeve (28) against the ceramic column body (5) under its elastic force, so that the two ends of the ceramic column body (5) are pressed against the positioning conical sleeve (28) and the grinding disc (8) respectively, thereby realizing the initial positioning of the ceramic column body (5); Then, the clamping motor (21) is started, and the worm (22) drives the circumferentially distributed worm gear (23) to rotate, driving the clamping claw (4) to retract toward the center, clamping the ceramic column body (5) through the grinding block (41), and the pressure sensor (42) monitors the clamping force in real time; The grinding motor (7) is started to rotate the grinding disc (8) at high speed, and the end of the ceramic column body (5) is ground by the conical shape of the grinding disc (8). During the grinding process, the grinding disc (8) is driven to move by starting the moving motor (34), and the contact pressure and grinding depth between the grinding disc (8) and the end of the ceramic column body (5) are adjusted.

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