A polishing mechanism for steel ball fine grinding
By designing an adjustment mechanism and a composite motion polishing disc, the problem of existing equipment being unable to stably support and uniformly polish steel balls of different specifications has been solved, achieving a high-precision steel ball polishing effect and meeting the high-quality requirements of high-end bearings and other fields.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG HANYA PRECISION MACHINERY CO LTD
- Filing Date
- 2025-08-01
- Publication Date
- 2026-06-26
AI Technical Summary
Existing polishing equipment is unable to provide stable support and uniform polishing for steel balls of different sizes, resulting in insufficient polishing precision and failing to meet the high-quality requirements of high-end bearings and other fields.
An adjustment mechanism is adopted, which drives multiple sets of clamping arms to move synchronously through electric push rods. The arc-shaped clamping blocks fit tightly against the surfaces of steel balls of different diameters. The positioning groove provides stable support, and the combined movement of the lifting motor and polishing disc ensures that the steel balls are subjected to uniform force, thereby improving polishing accuracy.
It achieves stable support and uniform grinding of steel balls of different specifications, significantly improving polishing precision and smoothness, avoiding problems such as unstable support and uneven grinding, and meeting the high-quality requirements of high-end bearings and other fields.
Smart Images
Figure CN224407151U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel ball processing technology, and in particular to a polishing mechanism for precision grinding of steel balls. Background Technology
[0002] Steel ball machining refers to the process of processing steel into spherical parts with specific dimensions, precision, and surface quality through a series of processes such as forging, grinding, and polishing. Its background technology stems from the industrial sector's demand for high-precision rolling elements. As a key component of bearings, mechanical transmissions, and other equipment, traditional processing methods for steel balls are insufficient to meet the precision and efficiency requirements of modern industrial development, driving continuous improvement and upgrading of steel ball machining technology. The precision grinding stage of steel balls has extremely high requirements for surface smoothness, roundness, and other precision. Existing polishing equipment is unable to achieve targeted fine polishing, and is prone to surface scratches, insufficient precision, and other problems, failing to meet the high-quality requirements of high-end bearings and other fields. Therefore, a polishing mechanism for precision grinding of steel balls is particularly needed.
[0003] Chinese patent CN222932392U, published on June 3, 2025, discloses a steel ball polishing device. By setting up a flushing mechanism, it can clean the polishing medium and dirt remaining in the polishing device, thereby delaying the wear and aging of the polishing device. However, this steel ball polishing device lacks an adaptive adjustment structure for steel balls of different specifications, which can easily lead to unstable support or uneven polishing when polishing steel balls of different sizes, affecting the polishing accuracy. Utility Model Content
[0004] The purpose of this invention is to provide a polishing mechanism for precision grinding of steel balls, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a polishing mechanism for precision grinding of steel balls, comprising a base, a frame connected above the base, an adjustment mechanism provided on the surface of the frame, a support connected above one side of the base, and a polishing mechanism provided on the surface of the support;
[0006] The adjustment mechanism includes an electric push rod mounted on one side of the base frame. A connecting rod is connected to the output end of the electric push rod. A toothed block is connected to the surface of the connecting rod, and a gear is meshed with the surface of the toothed block. A movable disc is connected to the surface of the gear, and the movable disc is rotatably connected to the inner bottom of the base frame via a bearing. A sliding groove is formed on the side of the movable disc, and a sliding rod is slidably connected inside the sliding groove. A moving block is fixedly connected to the top end of the sliding rod. A moving groove is formed on the surface of the base frame, and a clamping arm is fixedly connected to the surface of the moving block. An arc-shaped clamping block is connected to the inner side of one end of the clamping arm. A polishing platform is connected to the upper center of the base frame, and a positioning groove is formed in the center of the polishing platform.
[0007] Preferably, the tooth blocks are evenly distributed along the length direction on the surface of the connecting rod, and the tooth blocks are adapted to the teeth of the gear.
[0008] Preferably, the slide grooves are arranged in four identical sets radially and evenly around the axis of the movable disk on the side of the movable disk, and the size of the slide rod is precisely matched with the size of the slide groove.
[0009] Preferably, the number of moving slots is the same as the number of sliding slots, the length direction of the moving slots is arranged along the radial direction of the base frame, and the width of the moving slots is adapted to the width of the moving blocks.
[0010] Preferably, the polishing mechanism includes a lifting motor, which is installed at the top center of the bracket. A lead screw is connected to the output end of the lifting motor, and a lead screw slider is slidably connected to the surface of the lead screw. A limit block is connected to the outer side of the lead screw slider, and limit rods are connected to both sides of the bracket, passing through the limit blocks. A connecting seat is connected to the surface of the lead screw slider, and a polishing motor is connected to the top of one end of the connecting seat. A fixed frame is connected to the bottom of one end of the connecting seat. A rotating shaft is connected to the output end of the polishing motor, and a first roller is connected to the bottom of the rotating shaft. A belt is attached to the outer wall of the first roller, and a second roller is attached to the inner wall of the other end of the belt. A sliding shaft is connected to the top of the second roller. A slide rail is provided at the bottom of the fixed frame, and a ratchet is connected to the bottom shaft of the second roller. A ring frame is connected to the bottom of the fixed frame, and a toothed groove is provided on the inner side of the ring frame. The ratchet meshes with the toothed groove, and an output shaft is connected to the bottom of the ratchet. A polishing disc is installed at the bottom of the output shaft.
[0011] Preferably, the limiting block and the lead screw slider are an integral structure, and the limiting block has a through hole inside that is adapted to the limiting rod, with the inner wall of the through hole fitting against the outer wall of the limiting rod.
[0012] Preferably, the tooth grooves are evenly distributed in a ring on the inner side of the ring frame, and the tooth pitch of the tooth grooves is adapted to the tooth pitch of the ratchet.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This polishing mechanism for precision grinding of steel balls, through the adjustment mechanism, drives multiple sets of clamping arms to move synchronously with the help of electric push rods. The clamping range can be flexibly adjusted according to the size of steel balls of different specifications. The arc-shaped clamping block can fit tightly with the surface of steel balls of different diameters, and with the positioning groove, it can achieve stable support, avoid the situation of unstable support when grinding steel balls of different sizes, and at the same time ensure that the steel balls are subjected to uniform force, effectively solve the problem of uneven grinding, and significantly improve the polishing accuracy. Attached Figure Description
[0014] Figure 1This is a side view of the structure of the present utility model;
[0015] Figure 2 This is a schematic diagram of the bottom structure of the adjustment mechanism of this utility model;
[0016] Figure 3 This is a schematic diagram of the top structure of the adjustment mechanism of this utility model;
[0017] Figure 4 This is a schematic diagram of the polishing mechanism of this utility model;
[0018] Figure 5 This utility model Figure 4 Enlarged structural diagram at point A in the middle.
[0019] In the diagram: 1. Base; 2. Base frame; 3. Adjustment mechanism; 301. Electric push rod; 302. Connecting rod; 303. Tooth block; 304. Gear; 305. Movable plate; 306. Slide groove; 307. Slide rod; 308. Moving block; 309. Moving slot; 310. Clamping arm; 311. Arc-shaped clamping block; 312. Polishing platform; 313. Positioning slot; 4. Support; 5. Polishing mechanism; 501. Lifting motor 502. Lead screw; 503. Lead screw slider; 504. Limit block; 505. Limit rod; 506. Connecting seat; 507. Polishing motor; 508. Fixing frame; 509. Rotating shaft; 510. First roller; 511. Belt; 512. Second roller; 513. Sliding shaft; 514. Slide rail; 515. Ratchet; 516. Ring frame; 517. Tooth groove; 518. Output shaft; 519. Polishing disc. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Please see Figure 1-5 This utility model provides a technical solution: a polishing mechanism for precision grinding of steel balls, including a base 1, a base frame 2 connected above the base 1, an adjustment mechanism 3 provided on the surface of the base frame 2, a support 4 connected above one side of the base 1, and a polishing mechanism 5 provided on the surface of the support 4.
[0022] The adjustment mechanism 3 includes an electric push rod 301, which is mounted on one side of the base frame 2. The output end of the electric push rod 301 is connected to a connecting rod 302. A toothed block 303 is connected to the surface of the connecting rod 302, and a gear 304 is meshed with the surface of the toothed block 303. A movable disc 305 is connected to the surface of the gear 304. The movable disc 305 is rotatably connected to the inner bottom of the base frame 2 via bearings. A sliding groove 306 is provided on the side of the movable disc 305, and a sliding rod 307 is slidably connected inside the sliding groove 306. A moving block 308 is fixedly connected to the top of the sliding rod 307. The surface of the base 2 has a moving groove 309. A clamping arm 310 is fixedly connected to the surface of the moving block 308. An arc-shaped clamping block 311 is connected to the inner side of one end of the clamping arm 310. A polishing platform 312 is connected to the upper center of the base 2. A positioning groove 313 is provided in the center of the polishing platform 312. By adjusting the setting of the mechanism 3, when it is necessary to clamp and fix the steel ball, the electric push rod 301 is activated. Its output end drives the connecting rod 302 to move in a straight line. The toothed block 303 on the surface of the connecting rod 302 meshes with the gear 304, so that the gear 304 drives the movable disk 305 through the shaft. The rotating disc 305 rotates on the inner bottom of the base frame 2. As the disc rotates, the side groove 306 rotates synchronously, causing the internally slidingly connected slide rod 307 to move along the groove 306. The moving block 308 at the top of the slide rod 307 slides within the moving groove 309 on the surface of the base frame 2, causing the clamping arms 310 to move synchronously. Since the groove 306 is radially distributed around the axis of the disc 305, multiple sets of clamping arms 310 will synchronously move towards the center or open outwards during movement. When the steel ball is placed in the positioning groove 313 of the polishing platform 312, the arc-shaped inner side of one end of the clamping arm 310... The clamping block 311 moves with the clamping arm 310 and gradually comes into contact with the surface of the steel ball until the steel ball is firmly clamped in the positioning groove 313, preventing the steel ball from shifting during the polishing process. After clamping is completed, the electric push rod 301 stops working. The meshing relationship between the toothed block 303 and the gear 304 keeps the movable disk 305 fixed, ensuring that the clamping arm 310 and the arc-shaped clamping block 311 maintain the clamping force on the steel ball, providing a stable clamping foundation for the subsequent polishing operation of the polishing mechanism 5. When polishing is completed, the electric push rod 301 runs in reverse, driving all components to reset and releasing the steel ball for removal.
[0023] Furthermore, the toothed blocks 303 are evenly distributed along the length direction on the surface of the connecting rod 302, and the teeth of the toothed blocks 303 are matched with the teeth of the gear 304. Through the arrangement of the toothed blocks 303 and the gear 304, the evenly distributed toothed blocks 303 mesh with the teeth of the matched gear 304, which can accurately convert the linear motion of the connecting rod 302 into the rotational motion of the gear 304, ensuring that the movable disk 305 rotates smoothly and has high transmission efficiency, and avoiding insufficient movement accuracy of the clamping arm 310 due to excessive transmission clearance.
[0024] Furthermore, four identical sets of slide grooves 306 are evenly distributed radially on the side of the movable disk 305 with the axis of the movable disk 305 as the center. The size of the slide rod 307 is precisely matched with the size of the slide groove 306. Through the setting of the slide groove 306 and the slide rod 307, the four sets of radially distributed slide grooves 306 are slidably connected with the precisely matched slide rod 307, which allows multiple sets of clamping arms 310 to move towards the center or open outward synchronously and symmetrically, ensuring that the clamping force on the steel ball is evenly distributed and preventing the steel ball from shifting due to uneven force.
[0025] Furthermore, the number of movable grooves 309 is the same as the number of sliding grooves 306. The length direction of the movable grooves 309 is arranged radially along the base frame 2, and the width of the movable grooves 309 is adapted to the width of the movable blocks 308. Through the arrangement of movable blocks 308 and movable grooves 309, the movable grooves 309, which are the same in number and distributed radially, are slidably connected with the movable blocks 308 with adapted widths. This can strictly limit the movement direction of the clamping arm 310, ensuring that the clamping arm 310 always moves smoothly radially, and improving the clamping accuracy of the arc-shaped clamping block 311 on the steel ball.
[0026] Furthermore, the polishing mechanism 5 includes a lifting motor 501, which is mounted at the top center of the bracket 4. A lead screw 502 is connected to the output end of the lifting motor 501. A lead screw slider 503 is slidably connected to the surface of the lead screw 502. A limit block 504 is connected to the outer side of the lead screw slider 503. Limiting rods 505 are connected to both sides of the bracket 4, passing through the limit blocks 504. A connecting seat 506 is connected to the surface of the lead screw slider 503. A polishing motor 507 is connected to the top of one end of the connecting seat 506. A fixing frame 508 is connected to the bottom of one end of the connecting seat 506. A rotating shaft 509 is connected to the output end of the polishing motor 507. A first roller is connected to the bottom of the rotating shaft 509. 510, a belt 511 is attached to the outer wall of the first roller 510, and a second roller 512 is attached to the inner wall of the other end of the belt 511. A sliding shaft 513 is connected to the top of the second roller 512. A slide rail 514 is provided at the bottom of the fixed frame 508. A ratchet 515 is connected to the bottom shaft of the second roller 512. An annular frame 516 is connected to the bottom of the fixed frame 508. A toothed groove 517 is provided on the inner side of the annular frame 516. The ratchet 515 meshes with the toothed groove 517. An output shaft 518 is connected to the bottom of the ratchet 515. A polishing disc 519 is installed at the bottom of the output shaft 518. Through the setting of the polishing mechanism 5, when it is necessary to polish the steel balls in the positioning groove 313, the lifting mechanism 519 can be used to raise and lower the roller. When motor 501 starts, its output drives lead screw 502 to rotate. Lead screw slider 503 slides on the surface of lead screw 502. At the same time, the limiting block 504 on the outside of lead screw slider 503 slides on the limiting rods 505 on both sides of bracket 4, ensuring that lead screw slider 503 rises and falls stably in the vertical direction, driving connecting seat 506 to move synchronously, so that polishing disc 519 approaches or moves away from steel balls. After connecting seat 506 moves to a suitable height, polishing motor 507 starts. Its output drives first roller 510 to rotate through rotating shaft 509. First roller 510 drives second roller 512 to rotate through belt 511. Sliding shaft 513 at the top of second roller 512 slides in the slide rail 514 at the bottom of fixed frame 508. The movement provides stable support for the rotation of the second roller 512. When the second roller 512 rotates, the ratchet 515 connected to the bottom shaft rotates synchronously with it. Since the ratchet 515 meshes with the tooth groove 517 on the inner side of the ring frame 516, the ratchet 515 will make a circular motion along the tooth groove 517 during the rotation. In turn, the output shaft 518 drives the polishing disc 519 to make a circular motion while rotating on its own axis. The polishing disc 519 contacts the surface of the steel ball in a compound motion manner, and uses the bottom polishing layer to finely polish the steel ball, ensuring that the surface of the steel ball is evenly stressed, improving the polishing accuracy and smoothness. After polishing is completed, the lifting motor 501 runs in reverse, driving the polishing disc 519 to rise and reset, waiting for the next polishing operation.
[0027] Furthermore, the limiting block 504 and the lead screw slider 503 are an integral structure, and the limiting block 504 has a through hole that matches the limiting rod 505. The inner wall of the through hole fits against the outer wall of the limiting rod 505. Through the setting of the lead screw slider 503, the limiting block 504 and the limiting rod 505, the integral structure of the limiting block 504 is firmly connected to the lead screw slider 503 and can move synchronously with the lead screw slider 503. The through hole and the inner wall that fits against the limiting rod 505 inside the limiting block 504 can strictly limit the movement direction of the lead screw slider 503, prevent it from rotating or deviating during the lifting process, and ensure that the connecting seat 506 and the polishing disc 519 move smoothly in the vertical direction, thereby improving the accuracy of the polishing position.
[0028] Furthermore, the tooth grooves 517 are evenly distributed in a ring on the inner side of the ring frame 516, and the tooth pitch of the tooth grooves 517 is adapted to the tooth pitch of the ratchet 515. Through the arrangement of the ratchet 515, the ring frame 516 and the tooth grooves 517, the evenly distributed tooth grooves 517 mesh with the ratchet 515 with the adapted tooth pitch, which can guide the ratchet 515 to make stable circumferential motion along the inner side of the ring frame 516, so that the polishing disc 519 can achieve uniform circumferential trajectory motion while rotating, ensuring that the polishing force on each part of the steel ball surface is consistent, avoiding uneven polishing, and effectively improving the quality of steel ball fine polishing.
[0029] Working principle: First, the steel ball to be polished is placed in the positioning groove 313 of the polishing platform 312. The adjustment mechanism 3 is started, and the electric push rod 301 drives the connecting rod 302 to move. Through the meshing transmission of the toothed block 303 and the gear 304, the movable disk 305 is rotated. The sliding groove 306 on the side of the movable disk 305 drives the sliding rod 307 to move. The moving block 308 at the top of the sliding rod 307 slides in the moving groove 309, thereby allowing the clamping arm 310 to move towards the center. The arc-shaped clamping block 311 gradually comes into contact with the surface of the steel ball, firmly clamping the steel ball in the positioning groove 313 to prevent the steel ball from shifting during polishing. After clamping is completed, the polishing mechanism 5 starts to work. The lifting motor 501 drives the lead screw 502 to rotate. The lead screw slider 503 moves smoothly in the vertical direction under the limiting action of the limiting block 504 and the limiting rod 505, driving the connecting seat 506 and the polishing disk 519 to a suitable polishing height. Then, the polishing motor 507 starts. Through the transmission of the rotating shaft 509, the first roller 510, the belt 511, and the second roller 512, the ratchet 515 rotates. Since the ratchet 515 meshes with the tooth groove 517 on the inner side of the ring frame 516, the ratchet 515 moves in a circular motion along the tooth groove 517, driving the polishing disc 519 to rotate in a circular motion while rotating itself. The polishing disc 519 contacts the surface of the steel ball in a compound motion manner, using the bottom polishing layer to finely polish the steel ball, ensuring that the surface of the steel ball is evenly stressed, improving the polishing accuracy and smoothness. After polishing, the polishing motor 507 stops working, the lifting motor 501 runs in reverse, driving the polishing disc 519 to rise and reset. At the same time, the electric push rod 301 of the adjusting mechanism 3 runs in reverse, causing the clamping arm 310 to open outward, releasing the steel ball so that the polished steel ball can be taken out. The entire device completes one polishing operation and waits for the polishing process of the next steel ball. This completes the use process of a polishing mechanism for fine grinding of steel balls.
[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A polishing mechanism for precision grinding of steel balls, comprising a base (1), characterized in that: A base frame (2) is connected above the base (1), and an adjustment mechanism (3) is provided on the surface of the base frame (2). A bracket (4) is connected above one side of the base (1), and a polishing mechanism (5) is provided on the surface of the bracket (4). The adjustment mechanism (3) includes an electric push rod (301), which is mounted on one side of the base frame (2). The output end of the electric push rod (301) is connected to a connecting rod (302). A toothed block (303) is connected to the surface of the connecting rod (302). A gear (304) is meshed with the surface of the toothed block (303). A movable disc (305) is connected to the surface of the gear (304). The movable disc (305) is rotatably connected to the inner bottom of the base frame (2) via a bearing. The side of the movable disc (305) has an opening. There is a sliding groove (306), and a sliding rod (307) is slidably connected inside the sliding groove (306). A moving block (308) is fixedly connected to the top of the sliding rod (307). A moving groove (309) is opened on the surface of the base frame (2). A clamping arm (310) is fixedly connected to the surface of the moving block (308). An arc-shaped clamping block (311) is connected to the inner side of one end of the clamping arm (310). A polishing platform (312) is connected to the upper middle part of the base frame (2). A positioning groove (313) is opened in the middle of the polishing platform (312).
2. The polishing mechanism for precision grinding of steel balls according to claim 1, characterized in that: The tooth blocks (303) are evenly distributed along the length direction on the surface of the connecting rod (302), and the tooth blocks (303) are matched with the teeth of the gear (304).
3. The polishing mechanism for precision grinding of steel balls according to claim 1, characterized in that: The slide groove (306) has four identical sets evenly distributed radially on the side of the movable disk (305) with the axis of the movable disk (305) as the center, and the size of the slide rod (307) is precisely matched with the size of the slide groove (306).
4. The polishing mechanism for precision grinding of steel balls according to claim 1, characterized in that: The number of moving grooves (309) is the same as the number of sliding grooves (306). The length direction of the moving grooves (309) is arranged along the radial direction of the base frame (2), and the width of the moving grooves (309) is adapted to the width of the moving blocks (308).
5. The polishing mechanism for precision grinding of steel balls according to claim 1, characterized in that: The polishing mechanism (5) includes a lifting motor (501), which is installed at the top center of the bracket (4). A lead screw (502) is connected to the output end of the lifting motor (501). A lead screw slider (503) is slidably connected to the surface of the lead screw (502). A limit block (504) is connected to the outer side of the lead screw slider (503). Limiting rods (505) are connected to both sides of the bracket (4), and the limiting rods (505) pass through the limiting blocks (504). A connecting seat (506) is connected to the surface of the lead screw slider (503). A polishing motor (507) is connected to the top of one end of the connecting seat (506), and a fixing frame (508) is connected to the bottom of one end of the connecting seat (506). A rotating shaft (509) is connected to the output end of the polishing motor (507). A first roller (510) is connected to the bottom of the rotating shaft (509). A belt (511) is attached to the outer wall of the first roller (510). A second roller (512) is attached to the inner wall of the other end of the belt (511). A sliding shaft (513) is connected to the top of the second roller (512). A slide rail (514) is provided at the bottom of the fixed frame (508). A ratchet (515) is connected to the bottom shaft of the second roller (512). A ring frame (516) is connected to the bottom of the fixed frame (508). A toothed groove (517) is provided on the inner side of the ring frame (516). The ratchet (515) meshes with the toothed groove (517). An output shaft (518) is connected to the bottom of the ratchet (515). A polishing disc (519) is installed at the bottom of the output shaft (518).
6. A polishing mechanism for precision grinding of steel balls according to claim 5, characterized in that: The limiting block (504) and the lead screw slider (503) are an integral structure, and the limiting block (504) has a through hole that is compatible with the limiting rod (505) inside, and the inner wall of the through hole is in contact with the outer wall of the limiting rod (505).
7. A polishing mechanism for precision grinding of steel balls according to claim 5, characterized in that: The tooth grooves (517) are evenly distributed in a ring on the inner side of the ring frame (516), and the tooth pitch of the tooth grooves (517) is adapted to the tooth pitch of the ratchet (515).