Workpiece deburring device
By designing a workpiece deburring device containing grinding and clamping mechanisms, the problem of low efficiency and difficulty in cleaning the burrs of the inner and outer walls is solved, and efficient and flexible burring grinding and cylinder fixing is achieved.
Patent Information
- Application Number
- CN202421293760.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-06
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-06-06
AI Technical Summary
The traditional deburring method is inefficient and labor-intensive, making it difficult to clean the burrs inside and outside walls of the barrel at the same time, and it is impossible to adjust freely according to the thickness of the barrel.
A workpiece deburring device is designed, including a grinding mechanism and a clamping mechanism. The grinding mechanism drives the gears and gear rings through the servo motor, which drives the outer throwing rod and the inner throwing rod to rotate simultaneously, achieving simultaneous polishing of the inner and outer wall burrs. The clamping mechanism drives the drive plate through a servo motor, which drives the clamp block to forcefully clamp the outer wall of the cylinder to prevent position deviation.
It effectively improves the efficiency of burr grinding, can grind the inner and outer walls at the same time, and adjusts according to the thickness of the cylinder members, avoiding positional deviation of the cylinder members during the polishing process.
Smart Images
Figure CN222958197U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of burr grinding, in particular to a workpiece deburring device. Background Technique
[0002] In the metal processing industry, after a workpiece undergoes processing procedures such as cutting and drilling, burrs often occur on its inner and outer walls. The existence of these burrs not only affects the appearance quality of the workpiece but may also have an adverse impact on the use performance of the workpiece, such as affecting the accuracy of workpiece assembly and increasing friction and wear. Therefore, removing burrs from workpieces is an important post-processing procedure in metal processing.
[0003] For example, when grinding a circular cylindrical part, traditional deburring methods mostly use manual grinding or grinding wheel grinding. These methods have problems such as low work efficiency, high labor intensity, and unsatisfactory deburring effects. Moreover, it is difficult to effectively clean the internal burrs of the cylindrical part. The mechanism that can clean the inside of the cylindrical part usually can only clean the outer wall and the inner wall of the cylindrical part independently and cannot do it simultaneously. And it is only suitable for the occasion where the thickness of the cylindrical part is fixed and cannot be freely adjusted according to the thickness of the cylindrical part. For this reason, a workpiece deburring device is needed to solve the existing deficiencies. Content of the Utility Model
[0004] The purpose of the utility model is to provide a workpiece deburring device. Through the provided grinding mechanism, it can effectively grind burrs on both the inner and outer sides of workpieces with different thicknesses, improving the burr grinding efficiency. Through the provided clamping mechanism, the clamping block firmly clamps the outer side wall of the cylindrical part, thereby fixing the cylindrical part and preventing the cylindrical part from shifting in position during the burr grinding process.
[0005] To solve the above technical problems, the utility model is realized through the following technical solutions:
[0006] The utility model is a workpiece deburring device, including a base and a cylindrical part. The top of the base is fixedly connected with a support plate, the top of the support plate is fixedly connected with a support disk, the inside of the support disk is movably connected with a grinding mechanism, the front end of the grinding mechanism is fixedly connected with several outer throwing rods, and the front end of the grinding mechanism is fixedly connected with several inner throwing rods. The outer throwing rods and the inner throwing rods are both distributed in a circular array, and the inner throwing rods are all located inside the outer throwing rods. The outer throwing rods are all movably connected with the outer wall of the cylindrical part, and the inner throwing rods are all movably connected with the inner wall of the cylindrical part. The top of the base is movably connected with a moving plate, the top of the moving plate is fixedly connected with a protective disk, the front end of the protective disk is movably connected with a clamping mechanism, and the clamping mechanism is movably connected with the outer wall of the cylindrical part.
[0007] The present utility model is further configured such that a first servo motor is fixedly connected to the top end of the base, and a driving rod is fixedly connected to the output end of the first servo motor. The driving rod penetrates through the support plate and is movably connected to the support plate. The other end of the driving rod is movably connected to the top end of the base. Threads are provided on the outer side of the driving rod. The driving rod penetrates through the moving plate and is threadedly connected to the moving plate.
[0008] The present utility model is further configured such that the grinding mechanism includes a movable disk, a first slider, a second slider, and an adjusting rod. The movable disk is movably connected to the inside of the support disk. The first slider, the second slider, and the adjusting rod are all distributed in a circular array. A plurality of first chutes are provided on the surface of the movable disk. The first slider and the second slider are respectively slidably connected to the inside of the first chutes. The adjusting rods are respectively movably connected to the inside of the first chutes through bearings.
[0009] The present utility model is further configured such that the grinding mechanism further includes an auxiliary wheel and a main wheel. The auxiliary wheels are distributed in a circular array. The auxiliary wheels are respectively fixedly connected to the ends of the adjusting rods. The main wheel is movably connected to the inside of the movable disk through a rotating shaft. The auxiliary wheels are all meshed with the main wheel.
[0010] The present utility model is further configured such that a second servo motor is fixedly connected to the outside of the support disk. The output end of the second servo motor is fixedly connected to the rotating shaft of the main wheel. A set of symmetric threads are provided on the outer side of the adjusting rod. The adjusting rod penetrates through the first slider and the second slider and is threadedly connected to the first slider and the second slider. The bottom ends of the outer polishing rods are respectively fixedly connected to the second slider through bolts, and the bottom ends of the inner polishing rods are respectively fixedly connected to the first slider through bolts.
[0011] The present utility model is further configured such that the grinding mechanism further includes a toothed ring, a gear, and a third servo motor. The toothed ring is fixedly connected to the outside of the movable disk. The gear is movably connected to one side of the support disk through a rotating shaft, and the toothed ring is meshed with the gear. The fourth servo motor is fixedly connected to the other side of the support plate, and the output end of the third servo motor is fixedly connected to the rotating shaft of the gear.
[0012] The present utility model is further configured such that the clamping mechanism includes a driving disk, a fixed disk, a third slider, and clamping blocks. The third slider and the clamping blocks are both distributed in a circular array. The clamping blocks are respectively fixedly connected to one ends of the third sliders and are movably connected to the outer wall of the cylindrical part. A plurality of second chutes are provided on the surface of the fixed disk. The third sliders are respectively slidably connected to the inside of the second chutes. A plurality of driving grooves are provided on the surface of the driving disk. The driving grooves are all arc-shaped. One ends of the third sliders are respectively movably connected to the inside of the driving grooves.
[0013] The present utility model is further configured such that the clamping mechanism further includes a servo motor four. The driving disc is movably connected to the inner side of the protection disc through a rotating shaft, and the fixed disc is fixedly connected to the inner side of the protection disc. The output end of the servo motor four is fixedly connected to the rotating shaft of the driving disc.
[0014] The present utility model has the following beneficial effects:
[0015] 1. By means of the grinding mechanism provided in the present utility model, when the servo motor three is started, the gear is driven to rotate, thereby driving the toothed ring and the movable disc to rotate synchronously. In this way, the outer throwing rod and the inner throwing rod are used to quickly grind the burrs on the inner wall and the outer wall of the cylindrical part. After the burrs at one end of the cylindrical part are ground, the cylindrical part is turned around to complete the burr grinding at the other end. The burrs of different thicknesses can be effectively ground on the inner and outer sides simultaneously, improving the burr grinding efficiency.
[0016] 2. By means of the clamping mechanism provided in the present utility model, when the servo motor four is started, the driving disc is driven to rotate inside the protection disc. Since the driving groove is arc-shaped and the sliding groove two is linear, when the driving disc rotates, the slider three is driven to approach each other along the sliding groove two until the clamping block firmly clamps the outer side wall of the cylindrical part, thereby fixing the cylindrical part and preventing the cylindrical part from shifting in position during the burr grinding process.
[0017] Of course, it is not necessary for any product implementing the present utility model to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.
[0019] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;
[0020] Figure 2 is a structural schematic diagram of another perspective of the present utility model;
[0021] Figure 3 is a structural schematic diagram of the grinding mechanism of the present utility model;
[0022] Figure 4 is a structural schematic diagram of the clamping mechanism of the present utility model;
[0023] Figure 5 is the present utility model Figure 3 an enlarged structural schematic diagram of part A in.
[0024] In the figure: 1, base; 2, cylinder; 3, support plate; 4, support disc; 5, grinding mechanism; 501, movable disc; 502, slider one; 503, slider two; 504, adjusting rod; 505, auxiliary wheel; 506, main wheel; 507, toothed ring; 508, gear; 509, servo motor three; 6, outer throwing rod; 7, inner throwing rod; 8, moving plate; 9, protective disc; 10, clamping mechanism; 1001, driving disc; 1002, fixed disc; 1003, slider three; 1004, clamping block; 1005, servo motor four; 11, servo motor one; 12, driving rod; 13, chute one; 14, servo motor two; 15, chute two; 16, driving groove. Detailed implementation manner
[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0026] As Figures 1-5 shown, the present invention provides a technical solution: a workpiece deburring device, including a base 1 and a cylinder 2. The top end of the base 1 is fixedly connected with a support plate 3. The top end of the support plate 3 is fixedly connected with a support disc 4. The inner side of the support disc 4 is movably connected with a grinding mechanism 5. The front end of the grinding mechanism 5 is fixedly connected with several outer throwing rods 6, and the front end of the grinding mechanism 5 is fixedly connected with several inner throwing rods 7. The outer throwing rods 6 and the inner throwing rods 7 are both arranged in a circular array, and the inner throwing rods 7 are all located inside the outer throwing rods 6. The outer throwing rods 6 are all movably connected with the outer wall of the cylinder 2, and the inner throwing rods 7 are all movably connected with the inner wall of the cylinder 2. The top end of the base 1 is movably connected with a moving plate 8. The top end of the moving plate 8 is fixedly connected with a protective disc 9. The front end of the protective disc 9 is movably connected with a clamping mechanism 10. The clamping mechanism 10 is movably connected with the outer wall of the cylinder 2. The top end of the base 1 is fixedly connected with a servo motor one 11, and the output end of the servo motor one 11 is fixedly connected with a driving rod 12. The driving rod 12 passes through the support plate 3, and the driving rod 12 is movably connected with the support plate 3. The other end of the driving rod 12 is movably connected to the top end of the base 1. The outer side of the driving rod 12 is provided with a thread. The driving rod 12 passes through the moving plate 8, and the driving rod 12 is threadedly connected with the moving plate 8.
[0027] First, insert the cylinder part 2 to the opposite side of the inner throwing rod 7 and the outer throwing rod 6, and then start the second servo motor 14 to drive the main wheel 506 to rotate, thereby driving the auxiliary wheel 505 to rotate synchronously, so as to drive the adjusting rod 504 to rotate synchronously. Since a set of symmetric threads are provided on the outer side of the adjusting rod 504, and the adjusting rod 504 is threadedly connected to the first slider 502 and the second slider 503, the first slider 502 and the second slider 503 are driven to approach each other inside the first chute 13, so as to drive the inner throwing rod 7 and the outer throwing rod 6 to approach each other until the inner throwing rod 7 fits against the inner wall of the cylinder part 2 and the outer throwing rod 6 fits against the outer wall of the cylinder part 2. Subsequently, start the first servo motor 11 to drive the driving rod 12 to rotate, control the moving plate 8 to move on the top of the base 1, so that the clamping block 1004 approaches the other end of the cylinder part 2. Then, start the fourth servo motor 1005 to drive the driving disk 1001 to rotate inside the protective disk 9. Since the driving groove 16 is arc-shaped and the second chute 15 is linear, when the driving disk 1001 rotates, the third slider 1003 is driven to approach each other along the second chute 15 until the clamping block 1004 firmly clamps the outer side wall of the cylinder part 2. Finally, start the third servo motor 509 to drive the gear 508 to rotate, thereby driving the toothed ring 507 and the movable disk 501 to rotate synchronously, so as to quickly polish the burrs on the inner wall and the outer wall of the cylinder part 2 by using the outer throwing rod 6 and the inner throwing rod 7. After the burrs at one end of the cylinder part 2 are polished, turn the cylinder part 2 around to complete the burr polishing at the other end.
[0028] Such as Figure 1 , Figure 2 , Figure 3 and Figure 5As shown in the figure, the grinding mechanism 5 includes a movable disk 501, a first slider 502, a second slider 503 and an adjusting rod 504. The movable disk 501 is movably connected to the inner side of the support disk 4. The first slider 502, the second slider 503 and the adjusting rod 504 are all distributed in a circular array. A plurality of first chutes 13 are formed on the surface of the movable disk 501. The first slider 502 and the second slider 503 are respectively slidably connected to the inside of the first chute 13. The adjusting rod 504 is respectively movably connected to the inside of the first chute 13 through bearings. The grinding mechanism 5 further includes an auxiliary wheel 505 and a main wheel 506. The auxiliary wheels 505 are distributed in a circular array. The auxiliary wheels 505 are respectively fixedly connected to the ends of the adjusting rods 504. The main wheel 506 is movably connected to the inside of the movable disk 501 through a rotating shaft. The auxiliary wheels 505 are all engaged with the main wheel 506. A second servo motor 14 is fixedly connected to the outside of the support disk 4. The output end of the second servo motor 14 is fixedly connected to the rotating shaft of the main wheel 506. A set of symmetric threads are formed on the outside of the adjusting rod 504. The adjusting rod 504 passes through the first slider 502 and the second slider 503, and the adjusting rod 504 is threadedly connected to the first slider 502 and the second slider 503. The bottom ends of the outer polishing rods 6 are respectively fixedly connected to the second sliders 503 through bolts, and the bottom ends of the inner polishing rods 7 are respectively fixedly connected to the first sliders 502 through bolts. The grinding mechanism 5 further includes a toothed ring 507, a gear 508 and a third servo motor 509. The toothed ring 507 is fixedly connected to the outside of the movable disk 501. The gear 508 is movably connected to one side of the support disk 4 through a rotating shaft, and the toothed ring 507 is engaged with the gear 508. A fourth servo motor 1005 is fixedly connected to the other side of the support plate 3, and the output end of the third servo motor 509 is fixedly connected to the rotating shaft of the gear 508.
[0029] Start the second servo motor 14 to drive the main wheel 506 to rotate, thereby driving the auxiliary wheels 505 to rotate synchronously, so as to drive the adjusting rods 504 to rotate synchronously. Since a set of symmetric threads are formed on the outside of the adjusting rod 504, and the adjusting rod 504 is threadedly connected to the first slider 502 and the second slider 503, the first slider 502 and the second slider 503 are driven to approach each other inside the first chute 13, so as to drive the inner polishing rod 7 and the outer polishing rod 6 to approach each other until the inner polishing rod 7 is in contact with the inner wall of the cylinder part 2 and the outer polishing rod 6 is in contact with the outer wall of the cylinder part 2. Start the third servo motor 509 to drive the gear 508 to rotate, thereby driving the toothed ring 507 and the movable disk 501 to rotate synchronously, so as to quickly polish the burrs on the inner and outer walls of the cylinder part 2 by using the outer polishing rod 6 and the inner polishing rod 7. After the burrs at one end of the cylinder part 2 are polished, turn the cylinder part 2 around to complete the burr polishing at the other end, effectively polishing the burrs of different thicknesses on the inner and outer sides at the same time, and improving the burr polishing efficiency.
[0030] As Figure 1 and Figure 4As shown in the figure, the clamping mechanism 10 includes a driving disk 1001, a fixed disk 1002, a third slider 1003, and clamping blocks 1004. The third slider 1003 and the clamping blocks 1004 are both distributed in a circular array. The clamping blocks 1004 are respectively fixedly connected to one end of the third slider 1003, and the clamping blocks 1004 are movably connected to the outer wall of the cylinder part 2. A plurality of second chutes 15 are formed on the surface of the fixed disk 1002, and the third sliders 1003 are respectively slidably connected to the inside of the second chutes 15. A plurality of driving grooves 16 are formed on the surface of the driving disk 1001, and the driving grooves 16 are all arc-shaped. One end of the third slider 1003 is respectively movably connected to the inside of the driving grooves 16. The clamping mechanism 10 further includes a fourth servo motor 1005. The driving disk 1001 is movably connected to the inside of the protective disk 9 through a rotating shaft, and the fixed disk 1002 is fixedly connected to the inside of the protective disk 9. The output end of the fourth servo motor 1005 is fixedly connected to the rotating shaft of the driving disk 1001.
[0031] Start the fourth servo motor 1005 to drive the driving disk 1001 to rotate inside the protective disk 9. Since the driving grooves 16 are arc-shaped and the second chutes 15 are linear, when the driving disk 1001 rotates, it drives the third sliders 1003 to approach each other along the second chutes 15 until the clamping blocks 1004 firmly clamp the outer wall of the cylinder part 2, thereby fixing the cylinder part 2 and preventing the cylinder part 2 from shifting in position during the burr grinding process.
[0032] Working principle: During use, first, insert the cylinder part 2 to the opposite side of the inner polishing rod 7 and the outer polishing rod 6. Then start the second servo motor 14 to drive the main wheel 506 to rotate, thereby driving the driven wheel 505 to rotate synchronously, and then driving the adjusting rod 504 to rotate synchronously. Since a set of symmetric threads are formed on the outside of the adjusting rod 504, and the adjusting rod 504 is threadedly connected to the first slider 502 and the second slider 503, the first slider 502 and the second slider 503 are driven to approach each other inside the first chute 13, thereby driving the inner polishing rod 7 and the outer polishing rod 6 to approach each other until the inner polishing rod 7 fits against the inner wall of the cylinder part 2 and the outer polishing rod 6 fits against the outer wall of the cylinder part 2. Subsequently, start the first servo motor 11 to drive the driving rod 12 to rotate, control the moving plate 8 to move on the top of the base 1, so that the clamping blocks 1004 approach the other end of the cylinder part 2. Then, start the fourth servo motor 1005 to drive the driving disk 1001 to rotate inside the protective disk 9. Since the driving grooves 16 are arc-shaped and the second chutes 15 are linear, when the driving disk 1001 rotates, it drives the third sliders 1003 to approach each other along the second chutes 15 until the clamping blocks 1004 firmly clamp the outer wall of the cylinder part 2. Finally, start the third servo motor 509 to drive the gear 508 to rotate, thereby driving the toothed ring 507 and the movable disk 501 to rotate synchronously, and then quickly polish the burrs on the inner and outer walls of the cylinder part 2 by using the outer polishing rod 6 and the inner polishing rod 7. After finishing the polishing of one end of the cylinder part 2, turn the cylinder part 2 around to complete the burr polishing of the other end.
[0033] In the description of this specification, the descriptions referring to the terms "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.
[0034] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principles and practical applications of the present utility model, so that those skilled in the art can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.
Claims
1. A workpiece deburring device, comprising a base (1) and a cylinder (2), characterized in that: The top of the base (1) is fixedly connected to a support plate (3), the top of the support plate (3) is fixedly connected to a support disk (4), the inner side of the support disk (4) is movably connected to a grinding mechanism (5), the front end of the grinding mechanism (5) is fixedly connected to a plurality of outer throwing rods (6), and the front end of the grinding mechanism (5) is fixedly connected to a plurality of inner throwing rods (7), the outer throwing rods (6) and the inner throwing rods (7) are both distributed in a circular array, and the inner throwing rods (7) are all located on the inner side of the outer throwing rods (6), the outer throwing rods (6) are movably connected to the outer wall of the cylinder (2), and the inner throwing rods (7) are movably connected to the inner wall of the cylinder (2), the top of the base (1) is movably connected to a moving plate (8), the top of the moving plate (8) is fixedly connected to a protective disk (9), the front end of the protective disk (9) is movably connected to a clamping mechanism (10), and the clamping mechanism (10) is movably connected to the outer wall of the cylinder (2).
2. A workpiece deburring device according to claim 1, characterized in that: The top end of the base (1) is fixedly connected to a servo motor (11), and the output end of the servo motor (11) is fixedly connected to a drive rod (12), the drive rod (12) passes through the support plate (3), and the drive rod (12) is movably connected to the support plate (3), the other end of the drive rod (12) is movably connected to the top end of the base (1), the outer side of the drive rod (12) is provided with a thread, the drive rod (12) passes through the movable plate (8), and the drive rod (12) is threadedly connected to the movable plate (8).
3. A workpiece deburring device according to claim 2, characterized in that: The grinding mechanism (5) comprises a movable plate (501), a slider 1 (502), a slider 2 (503) and an adjusting rod (504); the movable plate (501) is movably connected to the inner side of the supporting plate (4); the slider 1 (502), the slider 2 (503) and the adjusting rod (504) are all distributed in a circular array; a plurality of slide grooves 1 (13) are provided on the surface of the movable plate (501); the slider 1 (502) and the slider 2 (503) are respectively slidably connected to the inside of the slide groove 1 (13); and the adjusting rod (504) is respectively movably connected to the inside of the slide groove 1 (13) through bearings.
4. A workpiece deburring device according to claim 3, characterized in that: The grinding mechanism (5) further comprises secondary wheels (505) and main wheels (506), wherein the secondary wheels (505) are arranged in a circular array, the secondary wheels (505) are respectively fixedly connected to the ends of the adjusting rods (504), the main wheels (506) are movably connected to the inside of the movable disk (501) via a rotating shaft, and the secondary wheels (505) are all meshed with the main wheels (506).
5. A workpiece deburring device according to claim 4, characterized in that: The outer side of the support plate (4) is fixedly connected to a servo motor 2 (14), the output end of the servo motor 2 (14) is fixedly connected to the rotating shaft of the main wheel (506), the outer side of the adjustment rod (504) is provided with a group of symmetrical threads, the adjustment rod (504) passes through the slider 1 (502) and the slider 2 (503), and the adjustment rod (504) is threadedly connected to the slider 1 (502) and the slider 2 (503), the bottom end of the outer throwing rod (6) is fixedly connected to the slider 2 (503) by bolts, and the bottom end of the inner throwing rod (7) is fixedly connected to the slider 1 (502) by bolts.
6. A workpiece deburring device according to claim 1, characterized in that: The clamping mechanism (10) comprises a driving disk (1001), a fixed disk (1002), a sliding block (1003) and a clamping block (1004); the sliding block (1003) and the clamping block (1004) are arranged in a circular array; the clamping block (1004) is respectively fixedly connected to one end of the sliding block (1003), and the clamping block (1004) is movably connected to the outer wall of the cylinder (2); a plurality of sliding grooves (15) are provided on the surface of the fixed disk (1002); the sliding block (1003) is respectively slidably connected to the inside of the sliding grooves (15); a plurality of driving grooves (16) are provided on the surface of the driving disk (1001); the driving grooves (16) are all arc-shaped; one end of the sliding block (1003) is respectively movably connected to the inside of the driving groove (16).
7. A workpiece deburring device according to claim 6, characterized in that: The clamping mechanism (10) further comprises a servo motor four (1005), the driving disk (1001) is movably connected to the inner side of the protective disk (9) via a rotating shaft, and the fixed disk (1002) is fixedly connected to the inner side of the protective disk (9), and the output end of the servo motor four (1005) is fixedly connected to the rotating shaft of the driving disk (1001).
8. A workpiece deburring device according to claim 7, characterized in that: The grinding mechanism (5) further comprises a gear ring (507), a gear (508) and a servo motor three (509), wherein the gear ring (507) is fixedly connected to the outer side of the movable disk (501), the gear (508) is movably connected to one side of the support disk (4) via a rotating shaft, and the gear ring (507) is meshed with the gear (508), the servo motor four (1005) is fixedly connected to the other side of the support plate (3), and the output end of the servo motor three (509) is fixedly connected to the rotating shaft of the gear (508).