Polishing device for batch machining of automobile bearings

Abstract

The invention discloses a polishing device for batch machining of automobile bearings, and particularly relates to the technical field of automobile workpiece grinding, the polishing device comprises a polishing frame and a polishing abrasive belt, a dust collector is installed on the side, close to the polishing abrasive belt, of the polishing frame, and a stable polishing assembly is arranged between the polishing frame and the polishing abrasive belt; the stable grinding assembly is used for keeping a spiral propelling type grinding track between the workpiece and the grinding abrasive belt; the stable grinding assembly comprises a driving guide wheel disc and a driven guide wheel disc which are movably connected to the side, close to the grinding abrasive belt, of the grinding frame. Workpieces in the two clamping blocks are driven to perform pure rotary motion through rotation of the driving guide wheel disc, the inclined grinding abrasive belt represents a fixed fixed inclined plane, and then when any point on the surface of a bearing makes contact with the grinding abrasive belt, the motion trail of the grinding abrasive belt is not a simple circumferential line any more, so that the grinding effect is good. The spiral line is formed by combining the tangential motion of rotation and the axial sliding component caused by the inclination angle.

Description

Technical Field

[0001] This invention relates to the field of automotive workpiece grinding technology, and specifically to a grinding device for batch processing of automotive bearings. Background Technology

[0002] Bearings, especially automotive bearings, are critical basic components. The geometric accuracy, surface roughness, and microstructure of their working surfaces directly determine their rotational accuracy, service life, vibration noise, and operational reliability. To achieve these stringent performance indicators, final finishing, typically grinding and ultra-precision grinding, becomes an indispensable core process. Highly efficient grinding equipment is crucial for stable and precise machining. Firstly, in terms of basic machining processes and heat dissipation management, the commonly used single-station sequential grinding method, with the grinding belt contacting the workpiece surface in a radially perpendicular or axially parallel manner, while simple and direct, results in a single grinding trajectory. This easily creates repetitive, periodic microtextures on the working surface, hindering the reduction of surface waviness. Furthermore, the grinding debris and heat are confined to the center of the contact area by vertical pressure, making smooth discharge difficult. This not only easily leads to secondary scratches on the machined surface but also makes the stability of the machining process highly dependent on the static rigidity of the equipment, resulting in weak resistance to dynamic disturbances and ultimately affecting the grinding quality of the bearing. Summary of the Invention

[0003] The purpose of this invention is to provide a grinding device for batch processing of automotive bearings to overcome the above-mentioned shortcomings in the technology.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a grinding device for batch processing of automotive bearings, comprising a grinding frame and a grinding belt, wherein a dust collector is installed on the side of the grinding frame near the grinding belt, and a grinding stabilizing component is provided between the grinding frame and the grinding belt, and the grinding stabilizing component is used to maintain a spiral-propelling grinding trajectory between the workpiece and the grinding belt. The grinding stabilizing assembly includes an active guide wheel and a driven guide wheel, which are movably connected to the grinding frame near the grinding belt. The active and driven guide wheels are inclined relative to the grinding belt. The outer surfaces of the active and driven guide wheels are provided with several placement slots. Each placement slot contains two clamping blocks that stably fix the workpiece. The two clamping blocks are set in a toothed shape. The active guide wheel contains a grinding belt brush, which maintains a dynamic wedge shape with the grinding belt. The bottom of the active guide wheel is provided with an tilting component that pushes the grinding belt brush to tilt and adjust along the outer surface of the grinding belt. One side of the grinding frame is provided with a coordinating component that drives the active guide wheel and the driven guide wheel to rotate synchronously, and the coordinating component synchronously drives the vacuum cleaner to swing left and right along the grinding belt and the driven guide wheel. Each of the placement slots is equipped with an adapter component for independently adjusting each clamping block.

[0005] Preferably, the tilting component includes a conversion column rotatably connected inside the active guide wheel disk. A driven swing arm and an active swing arm are fixedly connected to the outside of the conversion column, and the crossbar and the driven swing arm form a lever motion through the conversion column. The driven swing arm and the grinding belt brush are connected together by a tilting rod. A slide is fixedly connected to the side of the active guide wheel disk near the conversion column, and an electric push rod is fixedly connected to the side of the slide near the active swing arm. A crossbar is installed between the telescopic end of the electric push rod and the active swing arm.

[0006] Preferably, the collaborative component includes an active disk fixedly connected to one end of the active guide wheel disk near the grinding frame, a servo motor fixedly connected to the side of the grinding frame away from the active disk, and the output end of the servo motor passing through the grinding frame and fixedly connected to one end of the active disk, a driven disk fixedly connected to one end of the driven guide wheel disk, and a belt strip connecting the driven disk and the active disk. The belt and the vacuum cleaner are connected together by a connecting arm assembly.

[0007] Preferably, the connecting arm assembly includes a connecting frame installed between the driven plate and the grinding frame, and the connecting frame is configured as a U-shaped structure. One end of the vacuum cleaner is fixedly connected to a swing frame, and the swing frame and the grinding frame are connected together by a limit post, and the swing frame moves circumferentially along one side of the grinding frame through the limit post. A centering shaft is installed in the middle of the swing frame, and a concentric shaft is movably connected to the outside of the connecting frame. A connecting arm is connected to both the concentric shaft and the centering shaft.

[0008] Preferably, each of the adapter components includes a connecting arc frame and an arc slider fixedly connected to the outside of the clamping block. The connecting arc frame is located inside the placement groove and drives the clamping block to move. An arc groove is provided on one side of the connecting arc frame for guiding the arc slider to move. A concentric groove communicating with the inside of the arc groove is provided on one side of the connecting arc frame.

[0009] Preferably, an adjusting bolt is screwed onto one side of the connecting arc frame, a threaded groove is opened on one side of the arc slider, and one end of the adjusting bolt is screwed into the threaded groove corresponding to the concentric groove through the concentric groove. A bolt washer is installed on one side of the connecting arc frame, the bolt washer is sleeved on the outside of the adjusting bolt, and both ends of the bolt washer are made of flexible material. The placement slot is equipped with a rotating assembly that drives the connecting arc frame to move.

[0010] Preferably, the rotation assembly includes a rotation frame embedded in the placement slot, a concentric frame is fixedly connected to the side of the connecting arc frame near the rotation frame, a guide slot communicating with the inside of the placement slot is opened on one side of the rotation frame, and the concentric frame is located inside the guide slot. A positive and negative threaded rod is rotatably connected inside the guide slot, and a power motor is fixedly connected to one end of the rotation frame, and the power motor is used to drive the positive and negative threaded rod to rotate.

[0011] Preferably, a nut ring is fixedly connected to one end of the concentric frame located inside the guide groove, and the nut ring is screwed onto the outside of the positive and negative threaded rod. A side rod is fixedly connected to the outside of the nut ring. A side groove communicating with the placement groove and the inside of the guide groove is opened on the outside of the rotating frame. One end of the side rod extends to the outside of the side groove and is fixedly connected to the bottom of the connecting arc frame.

[0012] The technical effects and advantages provided by the present invention in the above technical solution are as follows: 1. This invention uses the rotation of the active guide wheel to drive the workpiece inside the two clamping blocks to perform pure rotational motion, while the inclined grinding belt represents a fixed inclined plane. Subsequently, when any point on the bearing surface contacts the grinding belt, its trajectory is no longer a simple circumference, but a spiral line composed of the rotational tangential motion and the axial slip component caused by the inclination angle. This means that the grinding force does not repeatedly act on the same micro-texture, but sweeps evenly across the entire surface to be processed along a small spiral angle, so that the driven guide wheel and the grinding belt jointly form a spiral propulsion grinding path, further improving the grinding quality of the workpiece. 2. This invention, through the inclined structure of the active guide wheel and the grinding belt, can decompose the total force of the grinding belt on the bearing into two components: a normal force perpendicular to the contact surface (responsible for grinding) and an axial force along the inclined plane. The axial force has a key effect, acting like a gentle and continuous push, which firmly presses the bearing against the axial positioning reference surface of the active guide wheel. This allows the active guide wheel to provide a reference, while the inclination angle of the grinding belt provides a continuous thrust to maintain this reference. The two work together to achieve stable processing without gaps, further improving the stability of workpiece grinding. 3. In this invention, the active and driven swing arms move within the active guide wheel disk under the push of the crossbar. Subsequently, the driven swing arm adjusts the angle of the grinding belt brush along the active guide wheel disk during the movement, thereby adjusting the contact angle between the grinding belt and the grinding belt brush. The grinding belt brush can penetrate deeper into the gap between the abrasive grains of the belt and conform to the edge curvature of the belt, reducing the presence of debris in the blind spot and further improving the overall surface consistency of the workpiece. 4. The lateral flow effect generated by the inclined sanding belt in this invention plans an initial dispersion path for impurities. The vacuum cleaner then establishes a forced impurity suction channel along this path through a precise negative pressure airflow field. The inclined sanding belt causes heat and debris to naturally tend to slide or scatter to one side. The vacuum cleaner, through the connecting arm assembly, drives it to swing, placing its suction port precisely on the inevitable path or convergence point of this impurity flow. The airflow efficiently and thoroughly extracts impurities that might otherwise diffuse randomly from the processing interface, enabling the two to work together to achieve a seamless connection from generation to removal, significantly improving the consistency of processing dimensions and the reliability of shape accuracy. 5. This invention uses the tooth structure of the clamping block itself to form a three-dimensional mesh with the outside of the workpiece. Each tooth becomes a miniature mechanical anchor point, so that when the workpiece is locally heated and expanded during grinding, the end face material can flow into the tiny space of the tooth valley or release pressure, instead of being completely confined by the rigid plane and causing overall distortion. This allows the clamping to adaptively accommodate the local and reversible thermal deformation of the workpiece while keeping the core positioning reference absolutely unchanged. Thus, it can maintain the long-term stability of the processing reference under thermal disturbance, and further improve the grinding quality of the workpiece. 6. This invention achieves end-to-end grinding of the workpiece by rotating the active guide wheel and the driven guide wheel. During the process of the active guide wheel transferring the workpiece from inside the drive guide wheel, a cooling stage for the workpiece is naturally formed in transit. After leaving the first grinding point and before entering the second grinding point, the workpiece is naturally cooled in the air or through a specific environment, so that the heat generated by the previous grinding can be effectively dissipated, which helps to maintain dimensional stability and improve surface integrity. 7. The present invention adjusts the clamping block by connecting the arc frame, so that the clamping block can adapt to workpieces with different end face heights. This facilitates the adjustment of the clamping block to the optimal contact position with the workpiece, ensuring that the grinding end of the workpiece is always stably exposed at the preset length, forming a constant and optimal contact area with the inclined grinding belt. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0014] Figure 1 This is a schematic diagram of the overall structure of the abrasive belt of the present invention; Figure 2 This is a diagram showing the first motion state of the connecting frame and connecting arm of the present invention; Figure 3 This is a schematic diagram of the connecting arc frame of the present invention; Figure 4 This is a diagram showing the second motion state of the connecting frame and connecting arm of the present invention; Figure 5 This is an exploded view of the rotating component of the present invention; Figure 6 This is a schematic diagram of the arc groove structure of the present invention; Figure 7 This is a schematic diagram of the driven swing arm of the present invention.

[0015] Explanation of reference numerals in the attached figures: 1. Grinding stand; 11. Vacuum cleaner; 12. Grinding belt; 2. Grinding stabilizer assembly; 21. Active guide wheel; 22. Driven guide wheel; 23. Placement slot; 24. Clamping block; 25. Grinding belt brush; 3. Collaborative components; 31. Servo motor; 32. Driving plate; 33. Driven plate; 34. Belt; 35. Connecting frame; 36. Concentric shaft; 37. Swing frame; 38. Connecting arm; 39. Centering shaft; 301. Limiting post; 4. Adaptor components; 41. Connecting arc frame; 42. Arc groove; 43. Bolt washer; 44. Concentric groove; 45. Adjusting bolt; 46. Arc slider; 47. Threaded groove; 5. Rotating assembly; 51. Rotating frame; 52. Concentric frame; 53. Side rod; 54. Nut ring; 55. Positive and negative threaded rod; 56. Power motor; 57. Guide groove; 58. Side groove; 6. Tilt assembly; 61. Tilt rod; 62. Driven swing arm; 63. Converter column; 64. Active swing arm; 65. Crossbar; 66. Electric actuator; 67. Carriage. Detailed Implementation

[0016] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0017] This invention provides, for example Figure 1 , Figure 2 and Figure 3 The grinding device shown is used for batch processing of automotive bearings. It includes a grinding frame 1 and a grinding belt 12. A dust collector 11 is installed on the side of the grinding frame 1 near the grinding belt 12. A grinding stabilizing component 2 is provided between the grinding frame 1 and the grinding belt 12. The grinding stabilizing component 2 is used to keep the workpiece and the grinding belt 12 in a spiral propulsion grinding trajectory. The grinding stabilizer assembly 2 includes an active guide wheel 21 and a driven guide wheel 22 that are movably connected to the side of the grinding frame 1 near the grinding belt 12. The active guide wheel 21 and the driven guide wheel 22 are in an inclined state with respect to the grinding belt 12. Several placement slots 23 are provided on the outside of both the active guide wheel 21 and the driven guide wheel 22. Each placement slot 23 is equipped with two clamping blocks 24 to stably fix the workpiece, and the two clamping blocks 24 are set in a tooth shape. The active guide wheel 21 is equipped with a grinding belt brush 25, and the grinding belt brush 25 and the grinding belt 12 maintain a dynamic wedge shape. The specific number of placement slots 23 is three, so that there are three placement slots 23 on the outside of the active guide wheel 21 and the driven guide wheel 22 respectively. In addition, it should be emphasized that there are two clamping blocks 24 inside each placement slot 23. Therefore, the specific number of clamping blocks 24 is twelve. At the same time, the number of adapter components 4 is the same as the number of clamping blocks 24, ensuring that the clamping blocks 24 can maintain a stable connection with the workpiece. The specific structure and principle of the vacuum cleaner 11 and the grinding belt 12 are existing technologies, so they are not described in detail in this application. refer to Figure 1 , Figure 2 and Figure 7 As shown, the bottom of the active guide wheel disk 21 is provided with an inclination component 6 that pushes the grinding belt brush 25 to tilt and adjust along the outside of the grinding belt 12. The inclination component 6 includes a conversion column 63 rotatably connected inside the active guide wheel disk 21. A driven swing arm 62 and an active swing arm 64 are fixedly connected to the outside of the conversion column 63 respectively. The crossbar 65 and the driven swing arm 62 form a lever motion through the conversion column 63. An inclination rod 61 is connected between the driven swing arm 62 and the grinding belt brush 25. A slide 67 is fixedly connected to the side of the active guide wheel 21 near the conversion column 63. An electric push rod 66 is fixedly connected to the side of the slide 67 near the active swing arm 64. A crossbar 65 is installed between the telescopic end of the electric push rod 66 and the active swing arm 64.

[0018] refer to Figure 1 , Figure 2 and Figure 4 As shown, a coordinating component 3 is provided on one side of the grinding frame 1 to drive the active guide wheel 21 and the driven guide wheel 22 to rotate synchronously. The coordinating component 3 also drives the vacuum cleaner 11 to swing left and right along the grinding belt 12 and the driven guide wheel 22. The coordinating component 3 includes an active plate 32 fixedly connected to one end of the active guide wheel 21 near the grinding frame 1. A servo motor 31 is fixedly connected to the side of the grinding frame 1 away from the active plate 32. The output end of the servo motor 31 passes through the grinding frame 1 and is fixedly connected to one end of the active plate 32. A driven plate 33 is fixedly connected to one end of the driven guide wheel 22. A belt strip 34 is connected between the driven plate 33 and the active plate 32. refer to Figure 2 and Figure 4As shown, the belt strip 34 and the vacuum cleaner 11 are connected together by a connecting arm assembly. The connecting arm assembly includes a connecting frame 35 installed between the driven plate 33 and the grinding frame 1. The connecting frame 35 is configured as a U-shaped structure. One end of the vacuum cleaner 11 is fixedly connected to a swing frame 37. The swing frame 37 and the grinding frame 1 are connected together by a limit post 301. The swing frame 37 moves circumferentially along one side of the grinding frame 1 through the limit post 301. A centering shaft 39 is installed in the middle of the swing frame 37, and a concentric shaft 36 is movably connected to the outside of the connecting frame 35. A connecting arm 38 is connected between the concentric shaft 36 and the centering shaft 39.

[0019] refer to Figure 5 and Figure 6 As shown, each placement slot 23 is equipped with an adapter component 4 for independently adjusting each clamping block 24. Each adapter component 4 includes a connecting arc frame 41 and an arc slider 46 fixedly connected to the outside of the clamping block 24. The connecting arc frame 41 is located inside the placement slot 23 and drives the clamping block 24 to move. An arc groove 42 is provided on one side of the connecting arc frame 41 for guiding the arc slider 46 to move. A concentric groove 44 communicating with the inside of the arc groove 42 is provided on one side of the connecting arc frame 41. An adjusting bolt 45 is screwed onto one side of the connecting arc frame 41, and a threaded groove 47 is opened on one side of the arc slider 46. One end of the adjusting bolt 45 is screwed into the threaded groove 47 corresponding to the concentric groove 44 through the concentric groove 44. A bolt washer 43 is installed on one side of the connecting arc frame 41. The bolt washer 43 is sleeved on the outside of the adjusting bolt 45, and both ends of the bolt washer 43 are made of flexible material. refer to Figure 3 and Figure 5 As shown, the placement slot 23 is equipped with a rotating assembly 5 that drives the connecting arc frame 41 to move. The rotating assembly 5 includes a rotating frame 51 embedded in the placement slot 23. A concentric frame 52 is fixedly connected to the side of the connecting arc frame 41 near the rotating frame 51. A guide slot 57 communicating with the interior of the placement slot 23 is opened on one side of the rotating frame 51, and the concentric frame 52 is located inside the guide slot 57. A positive and negative threaded rod 55 is rotatably connected inside the guide slot 57. A power motor 56 is fixedly connected to one end of the rotating frame 51, and the power motor 56 is used to drive the positive and negative threaded rod 55 to rotate. The threads of the positive and negative threaded rod 55 are positive and negative. One end of the concentric frame 52 located inside the guide groove 57 is fixedly connected to a nut ring 54, and the nut ring 54 is screwed onto the outside of the positive and negative threaded rod 55. A side rod 53 is fixedly connected to the outside of the nut ring 54. The outside of the rotating frame 51 is provided with a side groove 58 that communicates with the placement groove 23 and the inside of the guide groove 57. One end of the side rod 53 extends to the outside of the side groove 58 and is fixedly connected to the bottom of the connecting arc frame 41.

[0020] Working principle: When using: refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, when batch processing of workpieces is required, and to ensure stable grinding between the workpieces and the grinding belt 12, the servo motor 31 drives the active disk 32 to rotate synchronously. The active disk 32 forms a transmission connection with the driven disk 33 through the belt 34, thereby driving the driven disk 33 to rotate synchronously along one side of the grinding frame 1. During this transmission process, the active disk 32 synchronously drives the active guide wheel disk 21 to make a circular motion along one side of the grinding frame 1, and the placement groove 23 on its outer periphery moves towards the grinding belt 12 accordingly. At the same time, the rotation of the driven disk 33 drives the driven guide wheel disk 22 to move synchronously along the same side of the grinding frame 1. The placement groove 23 on the outer periphery of the driven guide wheel disk 22 and the placement groove 23 of the active guide wheel disk 21 form a synchronous motion relationship on the outer periphery. When the active guide wheel disk 21 rotates, it drives the two clamping blocks 24 in its placement groove 23 to clamp the workpiece and make pure rotational motion, so that the workpiece and the grinding belt 12 form an inclined contact. In this state, the inclined contact area naturally forms a directional flow ramp. The heat and metal chips generated during grinding are naturally and efficiently guided to one side of the contact area (usually the lower side or the open side) by the synergistic effect of the workpiece rotation centrifugal force and the inclined guidance of the grinding belt 12. The discharged impurities are then promptly absorbed by the vacuum cleaner 11. This design effectively avoids the problem of heat and chips being re-adhered to the workpiece surface or accumulating in large quantities in the center of the contact area under vertical pressure, thereby preventing secondary damage to the workpiece and heat accumulation in the contact area. The coordinated movement of the active guide wheel 21 and the driven guide wheel 22 not only provides stable centrifugal force for the workpiece rotation, but also forms the optimal chip removal guide in conjunction with the inclined setting of the grinding belt 12. At the same time, the synchronous linkage of the two guide wheels ensures that the workpiece and the grinding belt 12 always maintain a constant contact state, ultimately achieving efficient and stable grinding operations in the batch processing of workpieces. refer to Figure 1 , Figure 2 and Figure 7As shown, when the abrasive belt 12 is continuously grinding the surface of the workpiece and the surface of the abrasive belt 12 is in contact with the abrasive brush 25, the electric push rod 66 drives the crossbar 65 to move horizontally back and forth along the top of the slide 67 through the telescopic action. During the movement of the crossbar 65, it forms a contact engagement with the active swing arm 64, thereby driving the active swing arm 64 to swing along the direction of force. When the active swing arm 64 swings, it simultaneously drives the conversion column 63 to rotate and adjust inside the active guide wheel 21. During the rotation of the conversion column 63, it pulls the driven swing arm 62 to generate a linkage displacement, so that the driven swing arm 62 and the active swing arm 64 form a lever-type coordinated linkage relationship. Finally, under the joint drive of the tilt rod 61 and the driven swing arm 62, the abrasive brush 25 achieves precise angle adjustment inside the active guide wheel 21, ensuring that the side of the abrasive brush 25 and the surface of the abrasive belt 12 always maintain a suitable contact position, ensuring the continuous and stable grinding performance of the abrasive belt 12. refer to Figure 1 , Figure 2 and Figure 4 As shown, when the belt 34 rotates and needs to drive the vacuum cleaner 11 to swing left and right along one side of the grinding frame 1, the belt 34 rotates synchronously, driving the connecting frame 35 to rotate along one side of the grinding frame 1. The connecting frame 35 then drives the concentric shaft 36 to rotate synchronously. During the rotation of the concentric shaft 36, the connecting arm 38 is pulled to move into the connecting frame 35, so that part of the connecting arm 38 is embedded in the connecting frame 35, and the concentric shaft 36, the connecting arm 38 and the connecting frame 35 form a partial overlap. In this state, the effective transmission length of the end of the connecting arm 38 near the connecting frame 35 is shortened, realizing the shortening adjustment of the transmission stroke. When the connecting arm 38 moves, it synchronously drives the centering shaft 39 to approach the active guide wheel 21. The centering shaft 39 then drives the swing frame 37 to move synchronously. During the movement of the swing frame 37, it slides along the outer circumference of the limiting post 301. The limiting post 301 forms a precise guide and limit on the movement direction of the swing frame 37, ensuring that the swing frame 37... The vacuum cleaner 11 steadily approaches the vicinity of the active guide wheel 21. As the connecting frame 35 continues to rotate, it synchronously drives the concentric shaft 36 to move in the opposite direction. The concentric shaft 36 then pushes the connecting arm 38 to extend outward from inside the connecting frame 35. At this time, the effective transmission length of the end of the connecting arm 38 near the connecting frame 35 is extended, realizing the extension adjustment of the transmission stroke. During the extension process, the connecting arm 38 forms an abutment with the outer periphery of the centering shaft 39 and drives the centering shaft 39 to move in the opposite direction. The centering shaft 39 drives the swing frame 37 to swing in the opposite direction along the outer periphery of the limiting post 301, thereby pulling the vacuum cleaner 11 to move near the sanding belt 12. Through the continuous rotation of the connecting frame 35, the connecting arm 38 is driven to achieve telescopic reciprocating motion. With the guiding and limiting effect of the limiting post 301, the vacuum cleaner 11 is finally driven to swing steadily left and right along the area between the sanding belt 12 and the active guide wheel 21, ensuring comprehensive and efficient absorption of impurities generated during sanding. refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, when the active guide wheel 21 has finished grinding one end of the workpiece and needs to continuously grind the other end, firstly, the active guide wheel 21 and the driven guide wheel 22 rotate synchronously, so that the placement groove 23 on the outer periphery of the active guide wheel 21 is precisely aligned with the placement groove 23 on the outer periphery of the driven guide wheel 22. At this time, the end of the workpiece that has been ground is close to the placement groove 23 area of ​​the driven guide wheel 22, preparing for the end switching of the workpiece. Subsequently, the power motor 56 starts and drives the positive and negative threaded rod 55 to rotate around its own axis. The threaded rod 55 rotates at a constant speed. When the threaded rod 55 rotates, its thread structure generates a circular motion. Through the inclined surface of the thread teeth, it applies an axial thrust to the nut ring 54 that meshes with it. Since the nut ring 54 forms a limiting fit with the external structure through the side rod 53, its rotational freedom is restricted (it cannot rotate synchronously with the threaded rod 55). Therefore, a relative sliding occurs between the thread teeth of the threaded rod 55 and the nut ring 54, converting the circular motion of the threaded rod 55 into driving the nut ring 54 along the axial direction of the threaded rod 55. The linear driving force causes the nut ring 54 to drive the concentric frame 52 connected to it to move smoothly along the inside of the guide groove 57. The concentric frame 52 then drives the connecting arc frame 41 to move synchronously. Similarly, the nut ring 54 at the other end of the positive and negative threaded rod 55 drives the corresponding concentric frame 52 and connecting arc frame 41 to move synchronously in opposite directions. Finally, the two connecting arc frames 41 drive the corresponding clamping blocks 24 to move away from each other. That is, the two clamping blocks 24 on the side of the active guide wheel 21 release the clamping limit on the workpiece. At this time, the active guide wheel 21 can move away from the workpiece. Under the combined effect of gravity and the rotational inertia of the guide wheel, the workpiece inside the wheel 21 smoothly slides into the placement slot 23 of the aligned driven guide wheel 22. At the same time, the power drive mechanism on the side of the driven guide wheel 22 performs the opposite operation: its corresponding positive and negative threaded rods 55 rotate in opposite directions, driving the clamping blocks 24 on both sides to move closer to each other and quickly form a clamping and positioning with the outer periphery of the workpiece, ensuring that the unpolished end of the workpiece always maintains stable contact with the polishing belt 12, thereby realizing continuous and uninterrupted polishing operation at both ends of the workpiece. refer to Figure 3 and Figure 5As shown, when it is necessary to adjust the clamping block 24 along one side of the connecting arc frame 41 so that the clamping block 24 and the external position of the workpiece are adjusted synchronously, the adjusting bolt 45 is rotated to form a helical transmission engagement with the threaded groove 47 on the connecting arc frame 41, driving the adjusting bolt 45 to move axially along the inside of the threaded groove 47. During the movement of the adjusting bolt 45, it slides synchronously along the inner hole of the bolt washer 43 and the inside of the concentric groove 44 until the adjusting bolt 45 and the bolt washer 43 are released from contact. At this time, the adjusting bolt 45 is in a loose state along one side of the connecting arc frame 41, and its locking and limiting effect on the arc slider 46 is ineffective. Then, the clamping block 24 is pushed to move up and down along the arc extension direction of the connecting arc frame 41. The clamping block 24 synchronously drives the integrated arc slider 46 to slide smoothly along the arc groove 42 opened in the connecting arc frame 41. Through the guiding engagement of the arc groove 42 and the arc slider 46, the clamping position between the clamping block 24 and the workpiece is accurately adjusted, ensuring that the clamping block 24 can adapt to the peripheral clamping requirements of workpieces of different specifications.

[0021] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A grinding device for batch processing of automotive bearings, comprising a grinding frame (1) and a grinding belt (12), wherein a vacuum cleaner (11) is installed on the side of the grinding frame (1) near the grinding belt (12), characterized in that: A grinding stabilizer (2) is provided between the grinding frame (1) and the grinding belt (12), and the grinding stabilizer (2) is used to maintain a spiral-propelled grinding trajectory between the workpiece and the grinding belt (12); The grinding stabilizer assembly (2) includes an active guide wheel (21) and a driven guide wheel (22) that are movably connected to the side of the grinding frame (1) near the grinding belt (12). The active guide wheel (21) and the driven guide wheel (22) are in an inclined state with respect to the grinding belt (12). The active guide wheel (21) and the driven guide wheel (22) are each provided with several placement slots (23) on their exterior. Each of the placement slots (23) is equipped with two clamping blocks (24) to stably fix the workpiece, and the two clamping blocks (24) are set in a tooth shape. The active guide wheel (21) is equipped with a grinding belt brush (25), and the grinding belt brush (25) and the grinding belt (12) maintain a dynamic wedge shape. The bottom of the active guide wheel (21) is provided with an angle component (6) to push the grinding belt brush (25) to tilt and adjust along the outside of the grinding belt (12). The grinding frame (1) is provided with a coordinating component (3) on one side, which drives the active guide wheel (21) and the driven guide wheel (22) to rotate synchronously. The coordinating component (3) drives the vacuum cleaner (11) to swing left and right along the grinding belt (12) and the driven guide wheel (22). Each of the placement slots (23) is equipped with an adapter component (4) for independently adjusting each clamping block (24).

2. The grinding device for batch processing of automotive bearings according to claim 1, characterized in that: The tilting assembly (6) includes a conversion column (63) rotatably connected inside the active guide wheel disk (21). A driven swing arm (62) and an active swing arm (64) are fixedly connected to the outside of the conversion column (63). The crossbar (65) and the driven swing arm (62) form a lever motion through the conversion column (63). The driven swing arm (62) and the grinding belt brush (25) are connected together by a tilting rod (61). The active guide wheel disk (21) is fixedly connected to a slide (67) on the side near the conversion column (63), and the slide (67) is fixedly connected to an electric push rod (66) on the side near the active swing arm (64). A crossbar (65) is installed between the telescopic end of the electric push rod (66) and the active swing arm (64).

3. The grinding device for batch processing of automotive bearings according to claim 1, characterized in that: The collaborative component (3) includes an active disk (32) fixedly connected to one end of the active guide wheel disk (21) near the grinding frame (1), a servo motor (31) fixedly connected to the side of the grinding frame (1) away from the active disk (32), and the output end of the servo motor (31) passes through the grinding frame (1) and is fixedly connected to one end of the active disk (32). A driven disk (33) is fixedly connected to one end of the driven guide wheel disk (22), and a belt strip (34) is connected between the driven disk (33) and the active disk (32). The belt (34) and the vacuum cleaner (11) are connected together by a connecting arm assembly.

4. A grinding device for batch processing of automotive bearings according to claim 3, characterized in that: The connecting arm assembly includes a connecting frame (35) installed between the driven plate (33) and the grinding frame (1), and the connecting frame (35) is configured as a U-shaped structure. One end of the vacuum cleaner (11) is fixedly connected to a swing frame (37). The swing frame (37) and the grinding frame (1) are connected together by a limiting post (301), and the swing frame (37) moves circumferentially along one side of the grinding frame (1) through the limiting post (301). A centering shaft (39) is installed in the middle of the swing frame (37), and a concentric shaft (36) is movably connected to the outside of the connecting frame (35), and a connecting arm (38) is connected between the concentric shaft (36) and the centering shaft (39).

5. A grinding device for batch processing of automotive bearings according to claim 1, characterized in that: Each of the adapter components (4) includes a connecting arc frame (41) and an arc slider (46) fixedly connected to the outside of the clamping block (24). The connecting arc frame (41) is located inside the placement groove (23) and drives the clamping block (24) to move. An arc groove (42) is provided on one side of the connecting arc frame (41) for guiding the arc slider (46) to move. A concentric groove (44) communicating with the inside of the arc groove (42) is provided on one side of the connecting arc frame (41).

6. A grinding device for batch processing of automotive bearings according to claim 5, characterized in that: An adjusting bolt (45) is screwed onto one side of the connecting arc frame (41), and a threaded groove (47) is opened on one side of the arc slider (46). One end of the adjusting bolt (45) is screwed into the threaded groove (47) corresponding to the concentric groove (44) through the concentric groove (44). A bolt washer (43) is installed on one side of the connecting arc frame (41). The bolt washer (43) is sleeved on the outside of the adjusting bolt (45), and both ends of the bolt washer (43) are made of flexible material. The placement slot (23) is equipped with a rotating assembly (5) that drives the connecting arc frame (41) to move.

7. A grinding device for batch processing of automotive bearings according to claim 6, characterized in that: The rotation assembly (5) includes a rotation frame (51) embedded in the placement slot (23). A concentric frame (52) is fixedly connected to the side of the connecting arc frame (41) near the rotation frame (51). A guide slot (57) communicating with the inside of the placement slot (23) is opened on one side of the rotation frame (51), and the concentric frame (52) is located inside the guide slot (57). A positive and negative threaded rod (55) is rotatably connected inside the guide slot (57). A power motor (56) is fixedly connected to one end of the rotation frame (51), and the power motor (56) is used to drive the positive and negative threaded rod (55) to rotate.

8. A grinding device for batch processing of automotive bearings according to claim 7, characterized in that: The concentric frame (52) is fixedly connected to a nut ring (54) at one end inside the guide groove (57), and the nut ring (54) is screwed onto the outside of the positive and negative threaded rod (55). A side rod (53) is fixedly connected to the outside of the nut ring (54). The rotating frame (51) has a side groove (58) on its outside that communicates with the placement groove (23) and the inside of the guide groove (57). One end of the side rod (53) extends to the outside of the side groove (58) and is fixedly connected to the bottom of the connecting arc frame (41).

Images