Sand blasting equipment for polishing precision parts

Abstract

The invention discloses sand blasting equipment for polishing and processing precision parts, which comprises a machine body shell, and further comprises a sand blasting structure arranged in the machine body shell and comprising a sand blasting assembly and a driving assembly, a continuous feeding structure arranged in the machine body shell, and part fixing structures arranged on the surface of the continuous feeding structure in an annular array, and the sand and stone recovery structure is arranged at the bottom ends of the sand blasting structure and the continuous feeding structure. According to the sand blasting equipment for precision part polishing machining, the sand blasting structure is arranged to be matched with the continuous feeding structure, a servo motor arranged in the continuous feeding structure drives parts on the surface of a bottom end rotating disc to circularly rotate in the machine body shell, and meanwhile the sand blasting structure drives two sets of spraying heads to vertically swing through a gear motor; compared with the existing sand blasting equipment, the continuous sand blasting equipment has the advantages that a large number of parts can be circularly and uninterruptedly processed, so that the working efficiency of the equipment can be effectively improved.

Description

TECHNICAL FIELD

[0001] The application relates to the field of part sand blasting technology, and particularly relates to a sand blasting equipment for precision part polishing. BACKGROUND

[0002] The part sand blasting device is a device for cleaning or roughening treatment by using high-speed sand flow to impact the surface of a workpiece. The device sprays abrasive (such as quartz sand, steel shot, etc.) to the surface of the part through compressed air or mechanical power, effectively removes oxide scale, rust, old coating or burrs, and at the same time increases the surface roughness and improves the adhesion of subsequent coating, bonding or processing. The device is widely used in the automobile, aviation, mold and other industries, and is suitable for various materials such as metal and plastic, and has the characteristics of high efficiency, uniformity and controllability, and is a key equipment in the surface treatment process. Referring to patent No. CN108422330A, a small part batch automatic sand blasting device is disclosed, which comprises a base provided with a Foma wheel at the bottom, two sliding guide rails parallel to each other are installed on the top of the base, and a rack parallel to the sliding guide rails is installed at the middle position of the top of the base. The moving platform can move left and right along the sliding guide rails through gear and rack drive. The left electromagnetic adsorption platform and the right electromagnetic adsorption platform are respectively installed on the left and right upper planes of the moving platform, and the whole frame is installed on the base. The moving platform, the left electromagnetic adsorption platform and the right electromagnetic adsorption platform are located in the whole frame. The three-coordinate mechanical hand is installed on the upper side of the moving platform. The present application can realize batch electromagnetic adsorption holding, three-station sand blasting operation and continuous operation of small parts, realize the parallel operation of the "clamping and turning over" and "automatic sand blasting" stations, realize the batch automatic sand blasting of small parts, and has the advantages of high working efficiency, low labor intensity, high sand blasting precision and green environmental protection. However, in the process of specific implementation, the applicant finds that the patent has the following problems: In the process of specific application, the parts are conveyed by the conveying belt, and the sand blasting device in the middle is used for sand blasting treatment. The parts are placed on the surface of the conveying belt during conveying, and only the upper surface and the side surface of the parts can be sand blasted after being conveyed to the lower part of the sand blasting device. This will result in incomplete sand blasting of the surface of the parts, and small parts are generally polished by a roller or chemically polished, and are not suitable for sand blasting polishing.

[0003] Therefore, a sand blasting equipment for precision part polishing is needed to solve the above technical problems and provide a new technical solution. SUMMARY

[0004] Based on this, it is necessary to provide a sandblasting equipment for precision parts grinding and processing to address the aforementioned technical problems. By setting up a sandblasting structure in conjunction with a continuous feeding structure, a servo motor inside the continuous feeding structure drives the parts on the bottom turntable surface to rotate cyclically inside the machine body. At the same time, the sandblasting structure drives two sets of nozzles to swing up and down through a geared motor, thereby achieving continuous sandblasting of parts. Compared with existing sandblasting equipment, it can process a large number of parts cyclically and without interruption, thus effectively improving the working efficiency of the equipment.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A sandblasting device for precision parts grinding and processing, which is applied in electrical manufacturing plants.

[0006] The aforementioned sandblasting equipment for precision parts grinding specifically includes a protective plate, a machine body shell, and further includes: The sandblasting structure is located inside the outer casing of the machine body and includes sandblasting components and drive components; The continuous feeding structure is located inside the outer casing of the machine body; The parts fixing structure is arranged in a ring array on the surface of the continuous feeding structure; The sand and gravel recycling structure is located at the bottom of the sandblasting structure and the continuous feeding structure. The front of the casing has an inspection window, and the back of the casing has a clearance groove. Partition curtains are symmetrically fixed to both sides of the clearance groove.

[0007] As a preferred embodiment of the sandblasting equipment for precision parts grinding provided by the present invention, the sandblasting structure includes a storage tank fixedly disposed on the top of the machine body shell, a first rotating shaft rotatably disposed inside the machine body shell, a first support frame fixedly connected to the surface of the first rotating shaft in a linear array, a nozzle fixedly connected to the end of the first support frame away from the first rotating shaft, a connecting pipe fixedly connected to the input end of the nozzle, and the end of the connecting pipe away from the nozzle fixedly connected to the output end of the storage tank.

[0008] In a preferred embodiment of the sandblasting equipment for precision parts grinding provided by the present invention, a second rotating shaft is rotatably connected inside the outer shell of the machine body, and a second support frame is fixedly connected to the surface of the second rotating shaft in a linear array, with a nozzle fixedly installed at the end of the second support frame.

[0009] In a preferred embodiment of the sandblasting equipment for precision parts grinding provided by the present invention, a drive wheel is fixedly connected to one end of the first rotating shaft, a driven wheel is fixedly connected to one end of the second rotating shaft, a linkage belt is drivenly connected to the surfaces of the drive wheel and the driven wheel, and a connecting arm is fixedly connected to the surface of the first rotating shaft.

[0010] In a preferred embodiment of the sandblasting equipment for precision parts grinding provided by the present invention, a geared motor is fixedly connected inside the outer shell of the machine body. An eccentric disk is rotatably connected to the transmission end of the geared motor. A first shaft is eccentrically fixedly connected to the surface of the eccentric disk. A second shaft is fixedly connected to the end of the connecting arm away from the first rotating shaft. A connecting rod is rotatably connected to the surface of the second shaft. The end of the connecting rod away from the second shaft is rotatably connected to the first shaft.

[0011] As a preferred embodiment of the sandblasting equipment for precision parts grinding provided by the present invention, the continuous feeding structure includes a servo motor fixedly connected inside the machine body shell, a drive shaft rotatably connected to the transmission end of the servo motor, a positioning cylinder fixedly connected to the surface of the drive shaft, a turntable fixedly connected to the end of the positioning cylinder away from the servo motor, and the turntable passing through the clearance groove and disposed inside the machine body shell.

[0012] In a preferred embodiment of the sandblasting equipment for precision parts grinding provided by the present invention, the surface of the turntable is rotatably connected to a rotating shaft in a circular array, the surface of the rotating shaft is fixedly connected to a gear, the inside of the machine body is symmetrically fixedly connected to a side bracket, and one end of the side bracket that is close to each other is fixedly connected to an internal gear ring, which meshes with the gear on the surface of the rotating shaft.

[0013] In a preferred embodiment of the sandblasting equipment for precision parts grinding provided by the present invention, a bottom support ring is fixedly connected to the top surface of the gear, a return spring is provided at the upper end of the bottom support ring, the return spring is sleeved on the surface of the rotating shaft, a top support ring is fixedly connected to the top end of the return spring, and a hinge seat is fixedly connected to the top surface of the bottom support ring in a ring array. An inner bracket is hingedly connected inside the hinge seat, and a torsion spring is sleeved inside the hinge seat. The two ends of the torsion spring are fixedly connected to the hinge seat and the inner bracket, respectively.

[0014] In a preferred embodiment of the sandblasting equipment for precision parts grinding provided by the present invention, a certain gap is left between the top support ring and the central rotating shaft, the inner bracket passes through the middle of the top support ring and the rotating shaft, and the inner bracket is in close contact with the inner wall of the top support ring.

[0015] As a preferred embodiment of the sandblasting equipment for precision parts grinding provided by the present invention, the sand and gravel recycling structure includes a partition plate fixedly connected to the inside of the machine body shell. The surface of the partition plate is provided with a hole. The top and bottom surfaces of the partition plate are both inverted conical. A storage box is provided at the bottom end of the partition plate. The storage box is slidably disposed inside the machine body shell.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This invention provides a sandblasting device for precision parts grinding and processing. By setting up a sandblasting structure in conjunction with a continuous feeding structure, a servo motor inside the continuous feeding structure drives the parts on the bottom turntable surface to rotate cyclically inside the machine body. At the same time, the sandblasting structure drives two sets of nozzles to swing up and down through a reduction motor, thereby realizing continuous sandblasting of parts. Compared with existing sandblasting equipment, it can process a large number of parts in a cyclical and uninterrupted manner, thus effectively improving the working efficiency of the equipment.

[0017] The present invention provides a sandblasting device for precision parts grinding and processing. By setting an internal gear ring and gear inside the continuous feeding structure, when the part is driven by a servo motor to rotate the turntable inside the turntable, if the rotating shaft rotates to the inside of the machine body shell, the gear on its surface will mesh with the internal gear ring. In this way, while the turntable drives the rotating shaft to rotate, it can also drive the part on its surface to rotate. Combined with the up and down swinging sandblasting of the sandblasting structure, a more comprehensive sandblasting process can be achieved on the outer surface of the part.

[0018] This invention provides a sandblasting device for precision parts grinding and processing. By setting a part fixing structure, the part is placed on the top surface of the top support ring during installation. The pressure of the part itself squeezes the top support ring, causing the return spring to contract. At the same time, the inner bracket flips outward through the torsion force of the torsion spring and supports the inner wall of the part. Compared with existing sandblasting devices, the part will not shift due to the large impact force of the sandblasting device after placement, and the uniformity of sandblasting can be improved. Attached Figure Description

[0019] To more clearly illustrate the solutions in this invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the overall structure of a sandblasting equipment for precision parts grinding and processing provided by the present invention; Figure 2 A rear view of the overall structure of a sandblasting equipment for precision parts grinding and processing provided by the present invention; Figure 3 A schematic diagram of the internal structure of the outer shell of a sandblasting equipment for precision parts grinding and processing provided by the present invention; Figure 4 A schematic diagram of the sand and gravel recovery structure of a sandblasting equipment for precision parts grinding provided by the present invention; Figure 5 A schematic diagram of the sandblasting structure of a sandblasting equipment for precision parts grinding and processing provided by the present invention; Figure 6 This invention provides a schematic diagram of the sandblasting component in a sandblasting structure of a sandblasting equipment for precision parts grinding and processing. Figure 7 This invention provides a schematic diagram of the drive component in the sandblasting structure of a sandblasting device for precision parts grinding and processing. Figure 8 A schematic diagram of the continuous feeding structure of a sandblasting equipment for precision parts grinding and processing provided by the present invention; Figure 9 A schematic diagram of the internal gear ring and gear in a sandblasting device for precision parts grinding and processing provided by the present invention; Figure 10 This invention provides a schematic diagram of the component fixing structure of a sandblasting equipment for precision parts grinding and processing.

[0021] The markings in the diagram are explained as follows: 1. Machine casing; 2. Sandblasting structure; 3. Continuous feeding structure; 4. Sand and gravel recovery structure; 5. Parts fixing structure; 6. Inspection window; 7. Clearance groove; 8. Partition curtain; 9. Partition plate; 10. Leakage hole; 11. Storage box; 12. First tilting shaft; 13. First support frame; 14. Nozzle; 15. Connecting pipe; 16. Storage tank; 17. Second tilting shaft; 18. Second support frame; 19. Gear motor; 20. Eccentric disc; 21. 1. First shaft; 22. Connecting arm; 23. Second shaft; 24. Connecting rod; 25. Driving wheel; 26. Driven wheel; 27. Linkage belt; 28. Servo motor; 29. ​​Drive shaft; 30. Positioning cylinder; 31. Turntable; 32. Side bracket; 33. Internal gear ring; 34. Rotating shaft; 35. Gear; 36. Bottom support ring; 37. Return spring; 38. Top support ring; 39. Hinge seat; 40. Inner bracket; 41. Torsion spring. Detailed Implementation

[0022] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0023] As in the background art, conveying by a conveyor belt causes the parts to lie flat on the surface of the conveyor belt. After being conveyed to the sandblasting device, the parts can only be sandblasted on the upward side and the side. This results in incomplete sandblasting of the parts surface. Smaller parts are generally polished by roller grinding or chemical grinding, and sandblasting is not suitable.

[0024] To solve this technical problem, the present invention provides a sandblasting equipment for precision parts grinding and processing, which is applied in electrical manufacturing plants.

[0025] For details, please refer to Figures 1-3 A sandblasting device for precision parts grinding and processing specifically includes a housing 1, and also includes: The sandblasting structure 2 is located inside the outer casing 1 of the machine body and includes a sandblasting assembly and a drive assembly; The continuous feeding structure 3 is located inside the outer casing 1 of the machine body; The part fixing structure 5 is arranged in a ring array on the surface of the continuous feeding structure 3; The sand and gravel recycling structure 4 is located at the bottom of the sandblasting structure 2 and the continuous feeding structure 3. The front of the outer casing 1 is provided with an inspection window 6, and the back of the outer casing 1 is provided with a clearance groove 7. The two sides of the clearance groove 7 are symmetrically and fixedly connected with partition curtains 8.

[0026] The present invention provides a sandblasting equipment for precision parts grinding and processing. By setting a sandblasting structure 2 in conjunction with a continuous feeding structure 3, the servo motor 28 set inside the continuous feeding structure 3 drives the parts on the surface of the bottom turntable 31 to rotate cyclically inside the machine body shell 1. At the same time, the sandblasting structure 2 drives two sets of nozzles 14 to swing up and down through a reduction motor 19, thereby realizing continuous sandblasting of parts. Compared with existing sandblasting equipment, it can realize the continuous processing of a large number of parts, thus effectively improving the working efficiency of the equipment.

[0027] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0028] Example 1: Please refer to Figures 2-8A sandblasting device for precision parts grinding and processing, comprising a housing 1, and further comprising: The sandblasting structure 2 is located inside the outer casing 1 of the machine body and includes a sandblasting assembly and a drive assembly; The continuous feeding structure 3 is located inside the outer casing 1 of the machine body; The part fixing structure 5 is arranged in a ring array on the surface of the continuous feeding structure 3; The sand and gravel recycling structure 4 is located at the bottom of the sandblasting structure 2 and the continuous feeding structure 3. The front of the outer casing 1 is provided with an inspection window 6, and the back of the outer casing 1 is provided with a clearance groove 7. The two sides of the clearance groove 7 are symmetrically and fixedly connected with partition curtains 8.

[0029] Specifically, the sandblasting structure 2 includes a storage tank 16 fixedly installed at the top of the machine body shell 1. A first rotating shaft 12 is rotatably installed inside the machine body shell 1. A first support frame 13 is fixedly connected to the surface of the first rotating shaft 12 in a linear array. A nozzle 14 is fixedly connected to the end of the first support frame 13 away from the first rotating shaft 12. A connecting pipe 15 is fixedly connected to the input end of the nozzle 14. The end of the connecting pipe 15 away from the nozzle 14 is fixedly connected to the output end of the storage tank 16.

[0030] Specifically, a second rotating shaft 17 is rotatably connected inside the outer shell 1 of the machine body. A second support frame 18 is fixedly connected to the surface of the second rotating shaft 17 in a linear array. A nozzle 14 is fixedly installed at the end of the second support frame 18.

[0031] Specifically, a drive wheel 25 is fixedly connected to one end of the first rotating shaft 12, a driven wheel 26 is fixedly connected to one end of the second rotating shaft 17, a drive belt 27 is connected to the surfaces of the drive wheel 25 and the driven wheel 26, and a connecting arm 22 is fixedly connected to the surface of the first rotating shaft 12.

[0032] Specifically, a geared motor 19 is fixedly connected inside the outer casing 1. An eccentric disk 20 is rotatably connected to the transmission end of the geared motor 19. A first shaft 21 is eccentrically fixedly connected to the surface of the eccentric disk 20. A second shaft 23 is fixedly connected to the end of the connecting arm 22 away from the first tilting shaft 12. A connecting rod 24 is rotatably connected to the surface of the second shaft 23. The end of the connecting rod 24 away from the second shaft 23 is rotatably connected to the first shaft 21.

[0033] Specifically, the continuous feeding structure 3 includes a servo motor 28 fixedly connected inside the outer casing 1. The transmission end of the servo motor 28 is rotatably connected to a drive shaft 29. A positioning cylinder 30 is fixedly connected to the surface of the drive shaft 29. A turntable 31 is fixedly connected to the end of the positioning cylinder 30 away from the servo motor 28. The turntable 31 passes through the clearance groove 7 and is located inside the outer casing 1.

[0034] Specifically, the surface of the turntable 31 is rotatably connected to a rotating shaft 34 in a ring array. A gear 35 is fixedly connected to the surface of the rotating shaft 34. Side brackets 32 are symmetrically fixedly connected inside the outer shell 1. An internal gear ring 33 is fixedly connected to one end of the side brackets 32 that is close to each other. The internal gear ring 33 meshes with the gear 35 provided on the surface of the rotating shaft 34.

[0035] With the above structural design, when the device is in use, the storage tank 16 and the reduction motor 19 are turned on. The storage tank 16 conveys the sand and gravel inside to the nozzle 14 through the connecting pipe 15. The nozzle 14 can convey the sand and gravel forward. At the same time, the reduction motor 19 drives the eccentric disk 20 to rotate. When the eccentric disk 20 rotates, it drives the connecting rod 24 through the first shaft 21 and pushes the end of the connecting arm 22 to swing up and down through the second shaft 23. When the end of the connecting arm 22 swings, the tail end drives the first tilting shaft 12 to rotate. When the first tilting shaft 12 rotates, it drives the nozzle 14 at the end to swing up and down. At the same time, the first tilting shaft 12 drives the driven wheel 26 to rotate through the driving wheel 25 and the linkage belt 27. Meanwhile, the second tilting shaft 17 reciprocates. When the second tilting shaft 17 rotates, it can drive the nozzle 14 at the end to swing up and down. Simultaneously, the servo motor 28 is turned on, and the servo motor 28 drives the drive shaft 29 to rotate the positioning cylinder 30 and the turntable 31. As the turntable 31 rotates, it passes through the clearance groove 7 and moves into the interior of the machine body shell 1. At this time, the parts can be inserted into the surface of the rotating shaft 34. The turntable 31 drives the rotating shaft 34 and the parts to move into the interior of the machine body shell 1, so that the parts on the surface of the rotating shaft 34 can be sandblasted in conjunction with the up and down swing of the nozzle 14.

[0036] Example 2: The sandblasting equipment for precision parts grinding provided in Example 1 has been further optimized, specifically, as follows: Figures 4-10 As shown, a bottom support ring 36 is fixedly connected to the top surface of the gear 35. A return spring 37 is provided at the upper end of the bottom support ring 36. The return spring 37 is sleeved on the surface of the rotating shaft 34. A top support ring 38 is fixedly connected to the top end of the return spring 37. A hinge seat 39 is fixedly connected to the top surface of the bottom support ring 36 in a ring array. An inner bracket 40 is hinged inside the hinge seat 39. A torsion spring 41 is sleeved inside the hinge seat 39. The two ends of the torsion spring 41 are fixedly connected to the hinge seat 39 and the inner bracket 40, respectively.

[0037] Specifically, there is a certain gap between the top support ring 38 and the central rotating shaft 34, and the inner bracket 40 passes through the middle of the top support ring 38 and the rotating shaft 34, with the inner bracket 40 closely attached to the inner wall of the top support ring 38.

[0038] Specifically, the sand and gravel recycling structure 4 includes a partition 9 fixedly connected inside the outer shell 1 of the machine body. The surface of the partition 9 is provided with a hole 10. The top and bottom surfaces of the partition 9 are both inverted conical. A storage box 11 is provided at the bottom of the partition 9. The storage box 11 is slidably disposed inside the outer shell 1 of the machine body.

[0039] With the above structural design, when the part is installed, it is placed on the surface of the rotating shaft 34. The weight of the part itself compresses the top support ring 38. After the top support ring 38 is compressed, the return spring 37 is compressed. After the return spring 37 is compressed, the top support ring 38 moves downward. At this time, the inner bracket 40 stops and is limited. The inner bracket 40 is twisted outward by the torsion spring 41 to fix the part. After the rotating shaft 34 passes through the clearance groove 7 and rotates into the machine body shell 1, the gear 35 meshes with the internal gear ring 33. By rotating the turntable 31, the part can be rotated by the cooperation of the internal gear ring 33 and the rotating shaft 34. In this way, the part can be sandblasted.

Claims

1. A sandblasting device for precision parts grinding and processing, comprising a machine body shell (1); characterized in that, Also includes: The sandblasting structure (2) is located inside the outer shell (1) of the machine body and includes a sandblasting assembly and a drive assembly; A continuous feeding structure (3) is installed inside the outer shell (1) of the machine body; The parts fixing structure (5) is arranged in a ring array on the surface of the continuous feeding structure (3); The sand and gravel recycling structure (4) is located at the bottom of the sandblasting structure (2) and the continuous feeding structure (3); The front of the outer shell (1) is provided with an inspection window (6), and the back of the outer shell (1) is provided with a clearance groove (7). The two sides of the clearance groove (7) are symmetrically fixedly connected with partition curtains (8).

2. The sandblasting equipment for precision parts grinding and processing according to claim 1, characterized in that, The sandblasting structure (2) includes a storage tank (16) fixedly installed at the top of the outer shell (1). The outer shell (1) is rotatably provided with a first rotating shaft (12). The surface of the first rotating shaft (12) is linearly arrayed with a first support frame (13). The end of the first support frame (13) away from the first rotating shaft (12) is fixedly connected with a nozzle (14). The input end of the nozzle (14) is fixedly connected with a connecting pipe (15). The end of the connecting pipe (15) away from the nozzle (14) is fixedly connected to the output end of the storage tank (16).

3. The sandblasting equipment for precision parts grinding and processing according to claim 2, characterized in that, The inner casing (1) of the machine body is rotatably connected to a second rotating shaft (17), and the surface of the second rotating shaft (17) is fixedly connected to a second support frame (18) in a linear array. The end of the second support frame (18) is fixedly provided with a nozzle (14).

4. The sandblasting equipment for precision parts grinding and processing according to claim 3, characterized in that, One end of the first rotating shaft (12) is fixedly connected to a drive wheel (25), and one end of the second rotating shaft (17) is fixedly connected to a driven wheel (26). The surfaces of the drive wheel (25) and the driven wheel (26) are connected by a drive belt (27). The surface of the first rotating shaft (12) is fixedly connected to a connecting arm (22).

5. A sandblasting device for precision parts grinding and processing according to claim 4, characterized in that, A geared motor (19) is fixedly connected inside the outer shell (1) of the machine body. An eccentric disk (20) is rotatably connected to the transmission end of the geared motor (19). A first shaft (21) is eccentrically fixedly connected to the surface of the eccentric disk (20). A second shaft (23) is fixedly connected to the end of the connecting arm (22) away from the first rotating shaft (12). A connecting rod (24) is rotatably connected to the surface of the second shaft (23). The end of the connecting rod (24) away from the second shaft (23) is rotatably connected to the first shaft (21).

6. The sandblasting equipment for precision parts grinding and processing according to claim 1, characterized in that, The continuous feeding structure (3) includes a servo motor (28) fixedly connected inside the outer shell (1) of the machine body. The transmission end of the servo motor (28) is rotatably connected to a drive shaft (29). A positioning cylinder (30) is fixedly connected to the surface of the drive shaft (29). A turntable (31) is fixedly connected to one end of the positioning cylinder (30) away from the servo motor (28). The turntable (31) passes through the clearance groove (7) and is located inside the outer shell (1) of the machine body.

7. A sandblasting device for precision parts grinding and processing according to claim 6, characterized in that, The surface of the turntable (31) is rotatably connected to a rotating shaft (34) in a ring array. A gear (35) is fixedly connected to the surface of the rotating shaft (34). Side brackets (32) are symmetrically fixedly connected inside the outer shell (1). An internal gear ring (33) is fixedly connected to one end of the side brackets (32) that is close to each other. The internal gear ring (33) meshes with the gear (35) on the surface of the rotating shaft (34).

8. A sandblasting device for precision parts grinding and processing according to claim 7, characterized in that, The top surface of the gear (35) is fixedly connected to a bottom support ring (36). A return spring (37) is provided at the upper end of the bottom support ring (36). The return spring (37) is sleeved on the surface of the rotating shaft (34). The top end of the return spring (37) is fixedly connected to a top support ring (38). The top surface of the bottom support ring (36) is fixedly connected to a hinge seat (39) in a ring array. An inner bracket (40) is hinged inside the hinge seat (39). A torsion spring (41) is sleeved inside the hinge seat (39). The two ends of the torsion spring (41) are fixedly connected to the hinge seat (39) and the inner bracket (40) respectively.

9. A sandblasting device for precision parts grinding and processing according to claim 8, characterized in that, There is a certain gap between the top support ring (38) and the central rotating shaft (34). The inner bracket (40) passes through the middle of the top support ring (38) and the rotating shaft (34). The inner bracket (40) is in close contact with the inner wall of the top support ring (38).

10. A sandblasting device for precision parts grinding according to claim 1, characterized in that, The sand and gravel recycling structure (4) includes a partition (9) fixedly connected to the inside of the outer shell (1). The surface of the partition (9) is provided with a hole (10). The top and bottom surfaces of the partition (9) are both inverted cone-shaped. A storage box (11) is provided at the bottom of the partition (9). The storage box (11) is slidably disposed inside the outer shell (1).

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