Bearing inner ring polishing device

Abstract

The invention discloses a bearing inner ring grinding device, and belongs to the technical field of grinding devices. Comprising a machining rack which is provided with a front grinding machining station, a rear grinding machining station and a middle transfer channel. Oscillating assemblies for driving the grinding head to swing at high frequency are arranged on two sides of the fixed seat; a clamping assembly used for axial positioning and clamping and a rotating assembly used for driving a workpiece to rotate are arranged corresponding to the machining position. The feeding mechanism comprises a positive and negative motor and an arc-shaped feeding cover. According to the bearing inner ring grinding device, the rotation time difference is configured between the two sets of feeding covers, the feeding cover in the next procedure acts before the feeding cover in the previous procedure, interference-free smooth circulation of materials between double stations and automatic feeding and discharging by means of force are achieved by means of the sequential logic and the solid pushing effect when the feeding covers rotate, and the working efficiency is improved. The problems that a multi-procedure connecting line is prone to blockage and mechanical interference are effectively solved, the structure is simplified, and the polishing production efficiency of the bearing inner ring is improved.

Description

Technical Field

[0001] This invention relates to the field of grinding equipment technology, and more particularly to a grinding device for bearing inner rings. Background Technology

[0002] In the field of precision bearing manufacturing, the surface roughness and waviness of the bearing inner ring directly affect the overall performance of the bearing. Existing grinding equipment typically utilizes the relative motion between a rotating workpiece and a reciprocating grinding tool (such as an oilstone or abrasive belt) to perform micro-cutting on the workpiece surface to remove grinding marks left by previous processes. To maintain the radial position of the workpiece during grinding, traditional equipment often uses fixed supports to limit the workpiece, allowing its outer cylindrical surface to slide on the support surface while the workpiece rotates.

[0003] In existing bearing ultra-precision machining, two processes are typically required: roughing and ultra-precision, and fine ultra-precision. Since most existing grinding equipment is designed for a single station, it is difficult to complete both processes continuously within a single machining cycle. After the first process, the workpiece must undergo unloading, turnover, reloading, and repositioning. This discontinuous machining mode not only reduces production efficiency, but also, during the secondary positioning of the workpiece, slight deviations in the support datum make it difficult to ensure that the axis of the second fine grinding process perfectly coincides with that of the first rough grinding process. This results in uneven distribution of machining allowance, affecting the final surface finish.

[0004] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention

[0005] This invention provides a bearing inner ring grinding device to solve the technical problems of existing single-station grinding devices, which are difficult to continuously complete rough, fine and ultra-fine processes in one processing cycle, reducing production efficiency, and causing misalignment of the axis and uneven distribution of machining allowance due to positioning datum deviation, ultimately damaging surface consistency.

[0006] The present invention adopts the following technical solution: a bearing inner ring grinding device. It includes a processing frame with a through-feed channel fixed on its left side and a through-discharge channel fixed on its right side. The processing frame has two grinding positions, with a transfer channel between the two grinding positions; a fixed base, fixedly installed on the processing frame; an oscillation assembly, symmetrically arranged on both sides of the fixed base, with a grinding head at its end for performing high-frequency oscillating grinding on the workpiece; two clamping assemblies corresponding to the two grinding positions, each including a second moving module and a moving platform driven by it, for performing positioning and clamping actions along the workpiece axial direction; and a rotation assembly installed inside the fixed base for driving the workpiece to rotate.

[0007] A support component is provided at the grinding processing position to provide radial support for the workpiece; two feeding mechanisms are provided corresponding to the two sets of grinding processing positions, including forward and reverse motors and arc-shaped feeding covers driven by them to rotate; wherein, there is a rotation time difference between the two sets of feeding covers, and the feeding cover at the later grinding processing position is configured to perform the rotation action before the feeding cover at the previous grinding processing position.

[0008] Furthermore, the rotating assembly includes a support bracket, a positioning plate, a clamping panel, and a rotary motor; the support bracket is fixed on the processing frame, two positioning plates are spaced apart and fixed on the support bracket, and are respectively on the same axis as the two clamping assemblies, two rotary motors are provided corresponding to the positioning plates and are located in the fixed seat, and the clamping panel is embedded in the positioning plate through a bearing and connected to the output end of the rotary motor so as to rotate with the output end of the rotary motor.

[0009] Furthermore, the supporting component is a support member, and the feeding mechanism includes a fixed boss, a feeding cover, and a transmission shaft driven by the forward and reverse motors; the support member is disposed below the positioning plate and fixed to the side of the support bracket, the fixed boss is fixed to the side of the support bracket, the transmission shaft movably passes through the fixed boss and is coaxially and clearance-fitted with it, the arc-shaped feeding cover is fixed on the transmission shaft and is configured to receive the bearing inner ring falling from the feeding channel or the transfer channel, and use the bearing inner ring loaded on it to push the processed bearing inner ring off the support member.

[0010] Furthermore, the clamping assembly also includes a support base, a pusher, a pusher spindle, and a centering head; the support base is fixed on the processing frame, the second moving module is mounted on the support base and drives the moving platform to move, the pusher spindle is mounted on the moving platform through the pusher, one end of the centering head is tapered and coaxially fixed to the end of the pusher spindle, and the clamping assembly is configured such that the tapered surface of the centering head is driven by the second moving module to insert into the bearing inner ring and abut against the clamping panel, so as to achieve axial positioning, centering clamping, and synchronous rotation with the rotating assembly of the bearing inner ring.

[0011] Furthermore, the oscillation assembly also includes a support base, a drive motor, a driven wheel, a crank connecting rod, a moving module, and a clamp; the driven wheel is disposed on the side of the support base fixed to the frame, the drive motor is fixed on the support base, the output end of the drive motor is fixed with a drive wheel, and a transmission belt is connected between the drive wheel and the driven wheel to achieve synchronous transmission; the crank connecting rod includes a crank rod one, a crank arm two, and a crank rod two; one end of the crank rod one is eccentrically fixed to the side of the driven wheel, and the other end is movably connected to one end of the crank arm two; the other end of the crank arm two is movably connected to one end of the crank rod two; the other end of the crank rod two is coaxially fixed to the drive shaft and is configured to convert rotational motion into reciprocating oscillation of the drive shaft;

[0012] The first moving module is fixedly installed at the other end of the drive shaft. The clamp is fixed on the moving end of the first moving module. The grinding head is fixed at one end of the clamp. The oscillation component is configured to use the reciprocating swing of the drive shaft to drive the first moving module and the clamp to swing synchronously, thereby driving the grinding head to perform high-frequency oscillation grinding on the workpiece. The first moving module is configured to drive the grinding head to perform feed compensation action.

[0013] Furthermore, the support component consists of two support wheels spaced apart on the side of the support bracket, forming a placement station for placing the bearing inner ring between the two support wheels. The support wheels are configured to be rotatable. When the grinding head grinds the workpiece, the support wheels rotate synchronously with the rotation of the workpiece to provide radial rolling support for the rotating bearing inner ring, thereby reducing frictional scratches on the workpiece surface.

[0014] Furthermore, it also includes a self-cleaning component, which is provided in two sets in conjunction with two grinding processing positions. The self-cleaning component includes a mounting cover, a support base, a linkage roller, a follower roller, and a pin. The mounting cover is fixed inside the fixed base, and the support base is fixed to the inner bottom surface of the mounting cover. The linkage roller is horizontally arranged, and its two ends are rotatably connected to the support base through bearings. One end of the linkage roller is connected to the output end of the forward and reverse motor, and the other end is connected to the drive shaft. The two ends of the follower roller pass horizontally through the support base and can only move in a straight line. The surface of the linkage roller is provided with a cam groove. The pin is fixedly sleeved on the follower roller, and one end of the pin is inserted into the cam groove. It is configured to use the rotation of the drive shaft to drive the follower roller to generate linear reciprocating power.

[0015] Furthermore, each self-cleaning assembly also includes a support plate, a main pump body, a push plate, a piston rod, a compression spring, two brackets, a clamp, a distribution pipe, and a nozzle; the support plate is vertically fixed on the mounting cover, the main pump body is horizontally fixed on the support plate, one end of the piston rod is on the same straight line as the follower roller and is spaced apart, the other end is movably inserted through the main pump body to form a squeezing end, the push plate is fixedly sleeved on the piston rod, and a guide shaft is provided on the side of the push plate facing the support plate, the guide shaft is movably inserted through the support plate, and the compression spring is sleeved on the guide shaft and connected between the push plate and the support plate;

[0016] The bracket body is fixed on the support bracket, and the distribution pipe is fixed in the bracket body by the clamp. Several nozzles are arranged along the straight direction of the distribution pipe and face the contact position between the support wheel and the inner ring of the bearing. One end of the main pump body is connected to two liquid outlets, and the liquid outlets are connected to one end of the distribution pipe through hoses. One end of the main pump body is connected to a liquid inlet. It is configured to pump fluid by the reciprocating motion of the piston rod, and with the reset action of the compression spring, pulse flush the support position during the workpiece switching interval.

[0017] Furthermore, it also includes a synchronous feeding assembly, which includes a fixed frame, a bushing, a flange rod, a ring sleeve, a feeding rod, and a feeding end; the flange rod is coaxially fixed to the end of the transmission shaft, the fixed frame is fixed to the side of the support bracket, the bushing is connected to the fixed frame through a bearing and sleeved around the flange rod, and the connecting sleeve is connected to the side of the fixed boss to maintain a non-rotating state;

[0018] The push rod is coaxially connected to the flange rod via the ring sleeve and slides along the straight direction of the flange rod. The push end is fixed to one side of the push rod. The push rod maintains a phase interval with the loading cover in the circumferential direction and is configured to use this phase difference to make the push end move before the loading cover to push the old part down between the support wheels.

[0019] Furthermore, the synchronous pushing assembly also includes an arc-shaped groove on the side of the connecting sleeve, a connecting spring, a protective cover, a shaft pin, and an electromagnetic linkage structure; the side of the shaft sleeve has an annular electromagnet one, and the opposite side of the pushing rod has a block-shaped electromagnet two embedded therein; the side of the annular sleeve is fixed with a shaft pin that initially extends into the arc-shaped groove; the inner walls of the arc-shaped groove are respectively provided with a switch one for controlling the electromagnet to be energized and a switch two for controlling the electromagnet to be de-energized; the connecting spring is sleeved on the convex edge rod, and its two ends are respectively connected to the convex edge of the convex edge rod and the side of the pushing rod; the protective cover is coaxially fixed on the transmission shaft to cover the synchronous pushing assembly.

[0020] The technical solutions adopted in the embodiments of the present invention can achieve the following beneficial effects:

[0021] This invention discloses a bearing inner ring grinding device. It establishes a continuous processing line integrating rough and fine grinding by setting up two consecutive grinding stations and an intermediate transfer channel on a processing frame. Utilizing the axial centering and clamping of the clamping assembly, the drive of the rotating assembly, and the high-frequency oscillation grinding of the oscillating assembly, it achieves efficient and precise grinding of the bearing inner ring. Furthermore, by employing a dual-set feeding mechanism with a rotational time difference configuration, the arc-shaped feeding cover at the subsequent grinding station rotates before the feeding cover at the previous grinding station. Logically, this ensures a smooth sequence where the downstream station empties the finished product to make room before the upstream station pushes in the semi-finished product. This last-move-first-out time difference control not only cleverly utilizes the rotation of the feeding cover to achieve automated feeding and unloading, but also simplifies the complex robotic transfer structure between traditional multi-process operations. It effectively avoids mechanical interference and blockage risks caused by asynchronous material flow in continuous production, improving the production efficiency and process continuity of bearing inner ring grinding. Attached Figure Description

[0022] The accompanying drawings, which are provided to further illustrate the invention and constitute a part of this invention, are illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention.

[0023] In the attached diagram:

[0024] Figure 1 This is an overall schematic diagram of a bearing inner ring grinding device according to this application;

[0025] Figure 2 for Figure 1 A partial structural diagram;

[0026] Figure 3 for Figure 2 A partial structural diagram;

[0027] Figure 4 for Figure 3 Enlarged view of point A;

[0028] Figure 5 for Figure 2 The main view;

[0029] Figure 6 for Figure 5 Enlarged view of point B;

[0030] Figure 7 for Figure 2 A partial structural diagram;

[0031] Figure 8 for Figure 7A partial structural diagram;

[0032] Figure 9 for Figure 8 Enlarged view of point C;

[0033] Figure 10 for Figure 9 Enlarged view of point D;

[0034] Figure 11 for Figure 9 Enlarged view of point E;

[0035] Figure 12 This is a schematic diagram of the self-cleaning component structure;

[0036] Figure 13 for Figure 12 A partial structural diagram;

[0037] Figure 14 for Figure 13 Enlarged view at point F;

[0038] Figure 15 for Figure 13 A partial structural diagram;

[0039] Figure label:

[0040] 1. Processing frame; 11. Protective door; 12. Feed channel; 13. Discharge channel; 14. Coolant spray pipe; 15. Fixed base; 16. Transfer channel; 2. Vibration assembly; 21. Support base; 22. Drive motor; 23. Drive wheel; 231. Transmission belt; 24. Driven wheel; 25. Crank rod one; 27. Crank arm two; 28. Crank rod two; 29. ​​Drive shaft; 210. Moving module one; 211. Clamp; 212. Grinding head; 3. Clamping assembly; 31. Support base; 32. Moving module two; 33. Moving platform; 34. Pushing component; 35. Pushing spindle; 36. Centering head; 4. Rotating assembly; 41. Support bracket; 42. Positioning plate; 43. Rotary motor; 431. Clamping panel; 46. Support component; 44. Forward and reverse motors; 441. Fixed boss; 45. Feeding cover; 5. Self-cleaning component; 501. Support base; 51. Mounting cover; 52. Linkage roller; 521. Cam groove; 53. Follower roller; 54. Pin; 55. Support plate; 56. Main pump body; 57. Discharge end; 58. Hose; 59. Push plate; 510. Piston rod; 511. Compression spring; 512. Bracket body; 513. Clamp; 514. Distribution pipe; 515. Nozzle; 6. Synchronous pushing component; 61. Fixed frame; 62. Bushing; 621. Protruding edge rod; 622. Arc-shaped waist groove; 623. Connecting sleeve; 63. Ring sleeve; 65. Push rod; 651. Shaft pin; 64. Connecting spring; 66. Push end; 67. Support wheel; 68. Protective cover. Detailed Implementation

[0041] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0042] The technical solutions provided by the various embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0043] Example 1:

[0044] Reference Figures 1-3 As shown, this embodiment of the invention provides a bearing inner ring grinding device, the main body of which includes a processing frame 1, which serves as the mounting base for the entire device. A through-feed channel 12 is fixed on the left side of the processing frame 1 to receive the bearing inner ring to be processed from the previous process; a through-discharge channel 13 is fixed on the right side to output the finished product. The processing frame 1 has two grinding positions arranged sequentially along the workpiece flow direction, one in front and one in back, with a transfer channel 16 between the two grinding positions to connect the two processes. A fixed base 15 is also fixedly installed on the processing frame 1 to support the core drive component. Furthermore, the processing frame 1 is also equipped with a protective door 11 and coolant spray pipes 14 corresponding to the grinding positions to ensure processing safety and cooling.

[0045] like Figures 3-6 As shown, oscillation components 2 are symmetrically arranged on both sides of the fixed base 15. These oscillation components 2 are used to drive the grinding tool to perform high-frequency reciprocating motion. Specifically, the oscillation component 2 includes a support base 21 fixed on the processing frame 1. A drive motor 22 is fixed on the support base 21. A drive wheel 23 is fixed at the output end of the drive motor 22. A driven wheel 24 is rotatably arranged on the side of the support base 21 via a bearing. The drive wheel 23 and the driven wheel 24 are connected by a transmission belt 231 to achieve synchronous transmission. In order to convert the rotational motion into oscillation, this embodiment provides a crank connecting rod, including a crank rod 25, a crank arm 27, and a crank rod 28. One end of the crank rod 25 is eccentrically fixed to the side of the driven wheel 24, and the other end is movably connected to one end of the crank arm 27. The other end of the crank arm 27 is movably connected to one end of the crank rod 28. At the same time, a drive shaft 29 is rotatably arranged through the support base 21 via a bearing. The other end of the crank rod 28 is coaxially fixed to one end of the drive shaft 29.

[0046] A movable module 210 is fixedly installed at the other end of the drive shaft 29 (i.e., the end facing the machining position). A clamp 211 is fixed on the movable end of the movable module 210, and a grinding head 212 for grinding the surface of the workpiece is fixed at the front end of the clamp 211. During operation, the drive motor 22 drives the driven wheel 24 to rotate. Through the transmission of the crank connecting rod, the drive shaft 29 reciprocates within a certain angle range, thereby driving the movable module 210 and the grinding head 212 to perform high-frequency oscillating grinding on the workpiece. At the same time, the movable module 210 also undertakes the feed drive function, specifically used to control the contact and separation action of the grinding head 212: at the beginning of grinding, the grinding head 212 is driven to move towards the inner ring of the bearing, so that it establishes machining contact with the inner wall of the inner ring; after grinding, the grinding head 212 is driven to move in the opposite direction to move away from the inner ring of the bearing, making room for the transfer and replacement of the workpiece.

[0047] like Figure 3 and Figure 4 As shown, the device also includes a rotating assembly 4 and a clamping assembly 3 for realizing high-speed rotation and positioning clamping of the workpiece. The rotating assembly 4 includes a support bracket 41 fixed on the processing frame 1. Two positioning plates 42 are fixed at intervals on the support bracket 41. The two positioning plates 42 correspond to two grinding processing positions respectively. Two rotary motors 43 are correspondingly arranged inside the fixed base 15. A clamping panel 431 is installed at the center of the positioning plate 42 through an embedded bearing. The clamping panel 431 is coaxially connected to the output end of the rotary motor 43 and is configured to rotate with the rotary motor 43.

[0048] Two clamping components 3 are provided for the two grinding processing positions. Each clamping component 3 includes a support base 31 fixed on the processing frame 1. A second moving module 32 is installed on the support base 31. The moving end of the second moving module 32 is connected to a moving platform 33. A push spindle 35 is horizontally installed on the moving platform 33 via a pusher 34. A centering head 36 with a tapered design is coaxially fixed at the end of the push spindle 35. When processing is required, the second moving module 32 drives the moving platform 33 to move forward, so that the tapered surface of the centering head 36 is inserted into the inner hole of the bearing inner ring. Automatic centering is achieved by using the tapered surface to press the bearing inner ring against the rotating clamping panel 431, thereby driving the bearing inner ring to rotate synchronously at high speed with the rotating component 4.

[0049] A support component is fixed to the side of the support bracket 41. In this first embodiment, as shown... Figures 5-6As shown, the supporting component is a support member 46, and a feeding mechanism is provided on the support bracket 41. The feeding mechanism adopts a push-material method. Specifically, the support member 46 is fixed to the side of the support bracket 41 and located below the positioning plate 42, and is used to support the inner ring of the bearing. The feeding mechanism is provided in two sets corresponding to the two grinding processing positions. It includes a forward and reverse motor 44 fixed on the processing frame 1 and located inside the fixed seat 15. A fixed boss 441 is fixed on the side of the support bracket 41. The transmission shaft driven by the forward and reverse motor 44 moves through the fixed boss 441 and is coaxially and clearance-fitted with it to obtain stable rotational support. An arc-shaped feeding cover 45 is fixed on the transmission shaft.

[0050] Specifically, the arc-shaped feeding cover 45 has an open receiving port at one end, which is set in the direction of rotation. It is configured such that when the rotation passes through the feeding channel 12 or the transfer channel 16, the inner ring of the bearing can slide into the receiving port. When the rotation continues to the top of the support 46, the inner ring of the bearing is dislodged from the receiving port by gravity and falls into the processing station.

[0051] There is a rotation time difference between the two sets of loading covers 45. The loading cover 45 of the later process moves first. When the loading cover 45 rotates with the drive shaft to the bottom of the feeding channel 12 or the transfer channel 16, it receives a bearing inner ring to be processed. Then the forward and reverse motors 44 drive the drive shaft to rotate, and the loading cover 45 drives the new bearing inner ring loaded inside to rotate to the grinding processing position. The solidity of the new bearing inner ring pushes the old bearing inner ring that has been processed on the support 46 down. The old part falls into the transfer channel 16 or the discharge channel 13, and the new part stays on the support 46 to wait for clamping and processing.

[0052] It should be noted that in this application, the linear motion module (including motion module one 210 and motion module two 32) is a mature linear drive device in the prior art. Its specific structure is not limited, but a precision electric slide (lead screw module) is preferred. It typically includes a servo motor or stepper motor as the drive source, a lead screw (such as a ball screw) connected to the motor output, a nut seat sleeved on the lead screw, and a linear guide rail for guidance. When the motor rotates, it drives the lead screw to rotate, thereby driving the nut seat and the slide connected to it to perform linear reciprocating motion along the guide rail. Of course, in other embodiments, the linear motion module can also be a synchronous belt module, a linear motor module, a gear and rack transmission module, or a pneumatic / hydraulic drive assembly composed of cylinders or hydraulic cylinders, as long as it can drive the load component to perform linear displacement along a predetermined trajectory; no specific limitation is made here.

[0053] Working principle: In the initial state, the bearing inner ring to be processed is conveyed to the feeding channel 12 via the previous process, and the semi-finished product after one grinding falls into the transfer channel 16. When the work starts, the feeding mechanism performs the action first. The forward and reverse motors 44 drive the transmission shaft to rotate, which in turn drives the arc-shaped feeding cover 45 to rotate. Since the two sets of feeding covers 45 are configured with a rotation time difference, the feeding cover 45 of the next processing position performs the action first. Using the bearing inner ring contained in it, it pushes the finished product of the processing position into the discharge channel 13. Then, the semi-finished product to be ground a second time is placed on the support 46 or the support wheel 67. Immediately afterwards, the feeding cover 45 of the previous processing position performs a similar action, placing the new bearing inner ring to be processed into place and pushing the finished product of the first grinding at this position into the transfer channel 16, thereby realizing a continuous and automated dual-station feeding and discharge cycle.

[0054] Once the bearing inner ring is placed on the support 46, the clamping assembly 3 is activated. The moving module 2 32 drives the moving platform 33 to move forward, causing the propulsion spindle 35 and the centering head 36 at the end to move closer to the workpiece. The tapered end of the centering head 36 is inserted into the inner hole of the bearing inner ring. The center of the workpiece is automatically aligned using the principle of tapered surface mating, and the bearing inner ring is pressed against the clamping panel 431 of the rotating assembly 4 along the axial direction. At this time, the rotating motor 43 is activated, and the bearing inner ring is driven to rotate at high speed through the clamping panel 431.

[0055] The grinding stage then begins. The oscillation assembly 2 works in conjunction with the moving module 210. The drive motor 22, via belt drive through the driving wheel 23 and driven wheel 24, drives the crank-connecting rod mechanism, crank 25, crank arm 27, and crank rod 28, converting rotational motion into reciprocating oscillation of the drive shaft 29. This, in turn, drives the grinding head 212 to perform high-frequency oscillation. Simultaneously, before this, the moving module 210 drives the grinding head 212 to feed and contact the inner ring of the bearing, allowing it to contact the bearing's inner ring surface for grinding. After grinding, the moving module 210 first drives the grinding head 212 to retract and detach from the workpiece. Then, the moving module 32 drives the centering head 36 to retract and release the workpiece. The rotary motor 43 stops rotating, and the feeding mechanism restarts to perform the next material change operation. This cycle repeats continuously, achieving automated batch processing.

[0056] Example 2:

[0057] like Figures 7 to 15 As shown, this embodiment is an improved preferred solution of Embodiment 1. Unlike the static support and direct feeding method of Embodiment 1, this embodiment introduces a rolling support mechanism, a cam-linked fluid self-cleaning component 5, and a synchronous feeding component 6 based on phase difference control to improve the automation stability and processing accuracy of the equipment.

[0058] First, in this embodiment, the support component consists of two support wheels 67 spaced apart on the side of the support bracket 41. The two support wheels 67 form a placement station for placing the inner ring of the bearing. The support wheels 67 are configured to be rotatable. When the grinding head 212 grinds the workpiece, the workpiece rotates at high speed, and the support wheels 67 rotate synchronously, thereby converting sliding friction into rolling friction and effectively reducing scratches on the outer wall of the workpiece.

[0059] To address the issue of wear debris residue at the support wheel 67, this embodiment introduces a self-cleaning component 5, such as... Figures 7-15 As shown, the self-cleaning component 5 is provided in two sets to cooperate with two grinding processing positions. The self-cleaning component 5 includes a mounting cover 51 fixed inside the fixing base 15. A support base 501 is fixed on the bottom surface of the mounting cover 51. A horizontally arranged linkage roller 52 is rotatably connected to the support base 501. One end of the linkage roller 52 is connected to the forward and reverse motor 44, and the other end is connected to the drive shaft, which serves as an intermediate component for power transmission. The surface of the linkage roller 52 has a closed curved cam groove 521 that is connected end to end and extends reciprocally along the axial direction. A follower roller 53 that can only move linearly is also provided through the support base 501. A pin 54 is fixedly sleeved on the follower roller 53, and one end of the pin 54 is inserted into the cam groove 521. When the forward and reverse motor 44 rotates, the linkage roller 52 rotates, and drives the pin 54 through the cam groove 521 to drive the follower roller 53 to move linearly back and forth.

[0060] A support plate 55 is vertically fixed on the mounting cover 51. A main pump body 56 is horizontally fixed through the support plate 55. One end of the main pump body 56 is connected to a liquid inlet, which is connected to an external cutting fluid supply device. Both sides of one end are connected to liquid outlets 57. A piston rod 510 is movably inserted through one end of the main pump body 56. One end of the piston rod 510 is on the same straight line as the follower roller 53 and has an initial gap. The other end is movably inserted into the main pump body 56 to form a squeezing end. A push plate 59 is fixed on the piston rod 510. Two guide shafts are provided on the side of the push plate 59 near the support plate 55. A compression spring 511 is sleeved on the guide shaft. The two ends of the compression spring 511 are connected to the side of the push plate 59 and the side of the support plate 55, respectively.

[0061] Two symmetrically arranged support bodies 512 are fixedly installed on the support bracket 41, and a clamp 513 is fixedly installed on the support body 512. A distribution pipe 514 is fixedly inserted into the clamp 513 so that the distribution pipe 514 is horizontally mounted above the support wheel 67. In addition, a hose 58 is connected to the end of the distribution pipe 514, and the other end of the hose 58 is connected to the liquid outlet end 57 of the main pump body 56. Several nozzles 515 are installed axially at intervals on the distribution pipe 514, and the water outlet direction of the nozzles 515 is aligned with the contact position between the support wheel 67 and the inner ring of the bearing to achieve targeted flushing.

[0062] When the drive shaft rotates to perform the feeding switching action, during the first 45-degree rotation stroke, the follower roller 53 is guided forward by the cam groove 521 on the linkage roller 52. The displacement in this stage is used to eliminate the preset gap between the follower roller 53 and the piston rod 510 (i.e., to perform the empty stroke). At this time, the synchronous pushing component 6 has already pushed the old workpiece away from the support position by taking advantage of the phase.

[0063] As the drive shaft continues to rotate, the follower roller 53, after eliminating the gap, directly pushes the piston rod 510, compressing the fluid inside the main pump body 56. Combined with the resetting and squeezing action of the compression spring 511, this forces the cleaning fluid to be forcefully sprayed out of the nozzle 515 in a pulsed pattern, flushing and removing chips from the support wheel 67, which is now unobstructed by workpieces. The aforementioned gap setting plays a crucial mechanical delay role, ensuring that the flushing action is strictly limited to the interval between the removal of the old workpiece and the insertion of the new one, thus preventing the cleaning fluid from contaminating the workpiece.

[0064] To avoid direct collision between new and old workpieces, this embodiment also includes a synchronous feeding component 6. For example... Figures 12-15 As shown, the synchronous feeding assembly 6 includes a flange 621 coaxially fixed to the end of the drive shaft and a fixing frame 61 fixed to the side of the support bracket 41. A bushing 62 is connected to the fixing frame 61 via a bearing. To provide a static reference, a connecting sleeve 623 is coaxially fitted inside the bushing 62 with a clearance. One end of the connecting sleeve 623 passes through the bushing 62 and is fixedly connected to the fixing boss 441, thereby ensuring that the connecting sleeve 623 does not rotate with the drive shaft during operation. An arc-shaped groove 622 is provided on the side of the connecting sleeve 623. The arc-shaped groove 622 extends at a set angle in the circumferential direction, and two switches (not shown in the figure) are respectively provided at both ends of its inner wall. In addition, an annular electromagnet (not shown in the figure) is embedded in the side surface of the bushing 62 as a stationary end for magnetic attraction.

[0065] A flange rod 621 is coaxially fixed at the end of the drive shaft. A push rod 65 is coaxially keyed to the flange rod 621. The push rod 65 has a ring sleeve 63, which is keyed to the flange rod 621, so that the push rod 65 can rotate synchronously with the flange rod 621 and slide freely along the axial direction. A push end head 66 is fixed to one side of the push rod 65. A block-shaped electromagnet (not shown in the figure) is embedded on its opposite side (i.e. the side facing the bushing 62). In order to achieve mechanical guidance, a shaft pin 651 is fixed to the side of the ring sleeve 63. The shaft pin 651 extends into the stationary arc-shaped waist groove 622 and can slide in the groove. In addition, a connecting spring 64 is sleeved on the flange rod 621, with its two ends connected to the flange end of the flange rod 621 and the side of the push rod 65 respectively, providing axial reset tension. The push rod 65 maintains a 45-degree phase advance interval with the feeding cover 45 in the circumferential direction. A protective cover 68 is also fixed on the drive shaft to cover the entire synchronous push assembly 6.

[0066] In the initial / reset state, pin 651 touches switch one (starting position), and the control circuit energizes electromagnets one and two to generate attraction. Push rod 65 overcomes the resistance of connecting spring 64 and extends axially into the working position. As the drive shaft rotates, push rod 65 remains extended and rotates with the shaft. Utilizing a 45-degree phase difference, push end 66 reaches the processing position before loading cover 45, pushing away the old workpiece. When rotating to the push end position, pin 651 touches switch two (ending position), and the control circuit de-energizes the electromagnets. Push rod 65 quickly retracts axially under the action of connecting spring 64 (i.e., reset). At this time, push end 66 returns to the safe plane. When the drive shaft rotates in the opposite direction to reset, since push rod 65 has retracted, push end 66 will not touch the new workpiece that was just placed in by loading cover 45, thus achieving a lossless automatic cycle.

[0067] Working principle: When the working cycle starts, the forward and reverse motors 44 of the feeding mechanism drive the transmission shaft to rotate in the forward direction, and the synchronous pushing component 6 and the self-cleaning component 5 then enter the working state. In the initial stage of rotation, the pushing rod 65 is triggered by the shaft pin 651 touching the switch, which triggers electromagnetic adsorption, overcomes the spring resistance and maintains the extended state. Utilizing the 45-degree phase, it first drives the pushing end 66 to push the completed old workpiece on the processing position away from the support wheel 67. At the same time, the transmission shaft drives the linkage roller 52 to rotate, and the cam groove 521 on it drives the follower roller 53 to perform the idle stroke to eliminate the gap in the first 45-degree stroke, realizing mechanical delay. During the gap period when the old workpiece is pushed away and the new workpiece has not yet fallen, the follower roller 53 pushes the piston rod 510 to pump fluid, forcing the cleaning liquid to be pulsed out from the nozzle 515, which powerfully removes chips from the empty support wheel 67. Then, the loading hood 45 rotates to the top of the workstation and places the new bearing inner ring to be processed on the cleaned support wheel 67, completing the clean loading.

[0068] After the workpiece is positioned, clamping assembly 3 is activated, and moving module 2 32 drives moving platform 33 forward, causing the conical surface of centering head 36 to insert into the inner hole of bearing inner ring. Utilizing the principle of conical surface mating, centering head 36 automatically aligns the workpiece center and smoothly presses the workpiece against the clamping panel 431 of rotating assembly 4 along the axial direction. At this time, rotating motor 43 is activated, driving the workpiece to rotate at high speed. The bottom support wheel 67 rotates synchronously with the workpiece under the action of friction, providing stable radial rolling support for the workpiece and effectively avoiding surface scratches caused by traditional static support. Subsequently, moving module 1 210 drives grinding head 212 to feed radially to contact the inner wall of the workpiece. In conjunction with the high-frequency reciprocating oscillation output by oscillation assembly 2, precision grinding is performed on the rotating bearing inner ring.

[0069] After processing, the first moving module 210 drives the grinding head 212 to retract radially, while the second moving module 32 drives the centering head 36 to retract and release the workpiece. The rotary motor 43 stops, and the workpiece falls back onto the support wheel 67 to await the next round of material feeding. At this time, the system enters the reset process, and the forward and reverse motors 44 prepare to reverse and reset. Before this, because the shaft pin 651 touches the second switch at the end of the push stroke, de-energizing the electromagnet, the push rod 65 has already quickly retracted axially to the avoidance position under the action of the connecting spring 64. Therefore, in the initial stage of the reverse rotation reset of the transmission shaft and the next forward rotation feeding, a safe gap is maintained between the retracted push end 66 and the newly placed workpiece, completely avoiding mechanical interference and collision. Thus, the device completes one closed-loop processing cycle and enters the next cycle.

[0070] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A bearing inner ring grinding device, characterized in that: The assembly includes a processing frame (1), with a through-feed channel (12) fixed on its left side and a through-discharge channel (13) fixed on its right side. The processing frame (1) has two grinding positions, and a transfer channel (16) is provided between the two grinding positions. A fixed base (15) is fixedly installed on the processing frame (1). An oscillation assembly (2) is symmetrically arranged on both sides of the fixed base (15), and its end is provided with a grinding head (212) for performing high-frequency oscillating grinding on the workpiece. A clamping assembly (3) is provided in two positions corresponding to the two grinding positions. It includes a second moving module (32) and a moving platform (33) driven by it for positioning and clamping along the workpiece axis. A rotating assembly (4) is installed in the fixed base (15) for driving the workpiece to rotate. A support component is provided at the grinding processing position to provide radial support for the workpiece; two feeding mechanisms are provided corresponding to the two sets of grinding processing positions, including a forward and reverse motor (44) and an arc-shaped feeding cover (45) driven by it to rotate; wherein, there is a rotation time difference between the two sets of feeding covers (45), and the feeding cover (45) at the later grinding processing position is configured to perform the rotation action before the feeding cover (45) at the previous grinding processing position.

2. The bearing inner ring grinding device according to claim 1, characterized in that: The rotating assembly (4) includes a support bracket (41), a positioning plate (42), a clamping panel (431), and a rotary motor (43). The support bracket (41) is fixed on the processing frame (1). Two positioning plates (42) are spaced apart and fixed on the support bracket (41), and are respectively on the same axis as the two clamping assemblies (3). Two rotary motors (43) are provided corresponding to the positioning plates (42) and are located in the fixed seat (15). The clamping panel (431) is embedded in the positioning plate (42) through a bearing and connected to the output end of the rotary motor (43) so as to rotate with the output end of the rotary motor (43).

3. The bearing inner ring grinding device according to claim 2, characterized in that: The supporting component is a support member (46), and the feeding mechanism includes a fixed boss (441), a feeding cover (45), and a transmission shaft driven by the forward and reverse motor (44). The support member (46) is located below the positioning plate (42) and fixed to the side of the support bracket (41). The fixed boss (441) is fixed to the side of the support bracket (41). The transmission shaft moves through the fixed boss (441) and is coaxially and clearance-fitted with it. The arc-shaped feeding cover (45) is fixed on the transmission shaft and is configured to receive the bearing inner ring falling from the feeding channel (12) or the transfer channel (16), and use the bearing inner ring loaded on it to push the processed bearing inner ring off the support member (46).

4. The bearing inner ring grinding device according to claim 3, characterized in that: The clamping assembly (3) further includes a support base (31), a pusher (34), a pusher spindle (35), and a centering head (36). The support base (31) is fixed on the processing frame (1). The second moving module (32) is installed on the support base (31) and drives the moving platform (33) to move. The pusher spindle (35) is installed on the moving platform (33) through the pusher (34). One end of the centering head (36) is tapered and coaxially fixed to the end of the pusher spindle (35). The clamping assembly (3) is configured such that the tapered surface of the centering head (36) is driven by the second moving module (32) to insert into the bearing inner ring and abut against the clamping panel (431) to achieve axial positioning, centering clamping, and synchronous rotation with the rotating assembly (4) of the bearing inner ring.

5. The bearing inner ring grinding device according to claim 1, characterized in that: The oscillation assembly (2) also includes a support base (21), a drive motor (22), a driven wheel (24), a crank connecting rod, a moving module (210), and a clamp (211). The driven wheel (24) is disposed on the side of the support base (21) fixed to the frame. The drive motor (22) is fixed on the support base (21). The output end of the drive motor (22) is fixed with a drive wheel (23). A transmission belt (231) is connected between the drive wheel (23) and the driven wheel (24) to achieve [the desired effect]. Synchronous transmission, the crank connecting rod includes crank one (25), crank arm two (27) and crank two (28). One end of crank one (25) is eccentrically fixed to the side of the driven wheel (24), and the other end is movably connected to one end of crank arm two (27). The other end of crank arm two (27) is movably connected to one end of crank two (28). The other end of crank two (28) is coaxially fixed on the drive shaft (29) and is configured to convert rotational motion into reciprocating oscillation of the drive shaft (29). The first moving module (210) is fixedly installed at the other end of the drive shaft (29), the clamp (211) is fixed on the moving end of the first moving module (210), the grinding head (212) is fixed at one end of the clamp (211), the oscillation component (2) is configured to drive the first moving module (210) and the clamp (211) to oscillate synchronously by means of the reciprocating swing of the drive shaft (29), thereby driving the grinding head (212) to perform high-frequency oscillation grinding on the workpiece, and the first moving module (210) is configured to drive the grinding head (212) to perform feed compensation action.

6. The bearing inner ring grinding device according to claim 1, characterized in that: The support component consists of two support wheels (67) spaced apart on the side of the support bracket (41). A placement station for placing the bearing inner ring is formed between the two support wheels (67). The support wheels (67) are configured to be rotatable. When the grinding head (212) grinds the workpiece, the support wheels (67) rotate synchronously with the rotation of the workpiece to provide radial rolling support for the bearing inner ring in the rotating state, thereby reducing frictional scratches on the workpiece surface.

7. A bearing inner ring grinding device according to claim 6, characterized in that: It also includes a self-cleaning component (5), which is provided in two sets to cooperate with the two grinding processing positions. The self-cleaning component (5) includes a mounting cover (51), a support base (501), a linkage roller (52), a follower roller (53), and a pin (54). The mounting cover (51) is fixed inside the fixed base (15), and the support base (501) is fixed on the inner bottom surface of the mounting cover (51). The linkage roller (52) is horizontally arranged, and its two ends are rotatably connected to the support base through bearings. (501) is connected to the output end of the forward and reverse motor (44) at one end and to the transmission shaft at the other end. The two ends of the follower roller (53) pass horizontally through the support base (501) and can only move in a straight line. The surface of the linkage roller (52) is provided with a cam groove (521). The pin (54) is fixedly sleeved on the follower roller (53) and one end of it is inserted into the cam groove (521). It is configured to use the rotation of the transmission shaft to drive the follower roller (53) to generate linear reciprocating power.

8. A bearing inner ring grinding device according to claim 7, characterized in that: Each self-cleaning assembly (5) further includes a support plate (55), a main pump body (56), a push plate (59), a piston rod (510), a compression spring (511), two brackets (512), a clamp (513), a distribution pipe (514), and a nozzle (515); the support plate (55) is vertically fixed on the mounting cover (51), the main pump body (56) is horizontally fixed on the support plate (55), one end of the piston rod (510) is on the same straight line as the follower roller (53) and the distance is set, and the other end is movably inserted into the main pump body (56) to form a squeezing end, the push plate (59) is fixedly sleeved on the piston rod (510), and a guide shaft is provided on the side of the push plate (55) facing the support plate (55), the guide shaft is movably inserted through the support plate (55), and the compression spring (511) is sleeved on the guide shaft and connected between the push plate (59) and the support plate (55); The bracket body (512) is fixed on the support bracket (41), the distribution pipe (514) is fixed in the bracket body (512) by the clamp (513), the nozzle (515) is arranged in a straight line along the distribution pipe (514) and faces the contact position between the support wheel (67) and the inner ring of the bearing, one end of the main pump body (56) is connected to two liquid outlets (57), the liquid outlets (57) are connected to one end of the distribution pipe (514) through the hose (58), and the bottom of one end of the main pump body (56) is connected to the liquid inlet. It is configured to pump fluid by the reciprocating motion of the piston rod (510) and, with the reset action of the compression spring (511), to perform pulse flushing on the support position during the workpiece switching interval.

9. A bearing inner ring grinding device according to claim 8, characterized in that: It also includes a synchronous feeding assembly (6), which includes a fixed frame (61), a bushing (62), a flange rod (621), a connecting sleeve (623), a ring sleeve (63), a feeding rod (65), and a feeding end (66); the flange rod (621) is coaxially fixed to the end of the transmission shaft, the fixed frame (61) is fixed to the side of the support bracket (41), the bushing (62) is connected to the fixed frame (61) by a bearing and sleeved around the flange rod (621), and the connecting sleeve (623) is connected to the side of the fixed boss (441) to maintain a non-rotating state; The push rod (65) is coaxially connected to the flange rod (621) via the ring sleeve (63) and slides along the straight direction of the flange rod (621). The push end (66) is fixed to one side of the push rod (65). The push rod (65) maintains a 45-degree phase interval with the loading cover (45) in the circumferential direction. It is configured to use this phase difference to make the push end (66) move before the loading cover (45) to push the old part down between the support wheels (67).

10. A bearing inner ring grinding device according to claim 9, characterized in that: The synchronous pushing assembly (6) also includes an arc-shaped waist groove (622) opened on the side of the connecting sleeve (623), a connecting spring (64), a protective cover (68), a shaft pin (651) and an electromagnetic linkage structure; the side of the shaft sleeve (62) has an annular electromagnet one, the opposite side of the pushing rod (65) has a block-shaped electromagnet two embedded therein, the side of the annular sleeve (63) is fixed with a shaft pin (651) that initially extends into the arc-shaped waist groove (622), the inner walls of the arc-shaped waist groove (622) are respectively provided with a switch one for controlling the electromagnet to be energized and a switch two for controlling the electromagnet to be de-energized, the connecting spring (64) is sleeved on the convex edge rod (621), and the two ends are respectively connected to the convex edge of the convex edge rod (621) and the side of the pushing rod (65), and the protective cover (68) is coaxially fixed on the transmission shaft to cover the synchronous pushing assembly (6).

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