Full-automatic machining process for bearing outer circle groove

Abstract

The application discloses a full-automatic processing technology for bearing outer circle groove, which continuously inputs the inner ring steel ring by using a feeding conveying chain, automatically clamps and releases the inner ring steel ring by a steel ring transfer mechanical hand without driving components for clamping, and then feeds the inner ring steel ring to a radial supporting frame, and feeds the inner ring steel ring to a steel ring fixing mechanism clamping station in the axial direction by a driving cylinder, and the electromagnet is electrified to axially adsorb and fix the inner ring steel ring to prevent axial movement, and the radial supporting frame supports the inner ring steel ring to ensure high-speed rotary movement and prevent radial runout, and the supporting center of the radial supporting frame and the grinding point are located on both sides of the steel ring axis, so that the inner ring steel ring is always in a stable state during the grinding process, and the machining precision is ensured.

Description

Technical Field

[0001] The present invention belongs to bearing processing technology, in particular to a fully automatic processing technology for bearing outer cylindrical grooves. Background Art

[0002] Bearings are an important component in modern mechanical equipment. Their main function is to support mechanical rotating bodies, reduce the friction coefficient during their movement, and ensure their rotational accuracy. When processing the inner and outer rings of bearings, the following process flow is usually included: bar - forging - turning - heat treatment - grinding - superfinishing - final inspection of parts - rust prevention and storage. During grinding, the rings are generally installed manually on the outside of the chuck, and the chuck is adjusted to clamp and fix from the inside. Since the clamping force cannot be accurately controlled, it is easy to leave clamp marks on the inner circle of the inner ring if it is too tight, and it is easy to cause axial, radial, or even circumferential deviation during the grinding process, affecting the bearing accuracy and performance. Secondly, due to the manual disassembly and assembly of the rings, the operation efficiency is low, and human factors can easily affect the consistency of clamping. Summary of the Invention

[0003] In order to solve the above technical problems, the inventors have come up with the technical solution of the present invention through practice and summary. The present invention adopts the following technical solution:

[0004] A fully automatic machining process for a bearing outer groove, comprising the following steps:

[0005] S100, steel ring loading

[0006] The inner steel ring is transported to the loading station via a loading conveyor chain. A loading bracket is provided on the loading conveyor chain to hold the inner steel ring.

[0007] The inner steel ring is clamped by the steel ring transfer robot assembly and transported to the temporary support transition area. A radial support bracket is installed in the temporary support transition area. A steel ring fixing mechanism is installed at the rear side of the clamping station. A driving cylinder is installed at the bottom of the radial support bracket. The driving cylinder is used to drive the radial support bracket close to or away from the steel ring fixing mechanism.

[0008] The radial support bracket is used to temporarily support the inner steel ring from the outside. A roller is provided on the top of the radial support bracket. The roller and the outer circumference of the inner steel ring are in rolling engagement. A limit ring is provided on the roller. The limit ring is partially located in the outer circular groove and is used to prevent the inner steel ring from detaching from the radial support bracket after it detaches from the steel ring fixing mechanism.

[0009] Control the driving cylinder to move the temporarily supported inner steel ring to the clamping position of the steel ring fixing mechanism;

[0010] S200, steel ring fixed

[0011] The steel ring fixing mechanism includes a mounting frame 1, on which a servo motor and a rotary shaft are mounted. The rotary shaft is mounted on the output end of the servo motor, and a rotary disk is mounted on the end of the rotary shaft away from the servo motor. The servo motor drives the rotary disk to rotate at high speed through the rotary shaft. An electromagnet is embedded in the rotary disk. When the electromagnet is energized, it adsorbs and fixes the end face of the inner steel ring temporarily supported by the radial support bracket, thereby completing the adsorption and fixation of the inner steel ring.

[0012] S300, external groove grinding

[0013] A cross-shaped slide is installed at the bottom of the mounting frame 1. By controlling the motor on the cross-shaped slide, the position of the inner steel ring relative to the grinding wheel is adjusted, and the grinding motor drives the grinding wheel to rotate at high speed to grind the outer groove of the inner steel ring at high speed until the outer groove grinding is completed;

[0014] S400, steel ring blanking

[0015] The electromagnet is powered off, the steel ring is separated from the rotary table and is completely supported by the radial support bracket. The driving cylinder drives the radial support bracket and the inner steel ring with the outer groove ground to return to the temporary support transition area.

[0016] The steel ring transfer robot assembly clamps the inner steel ring on the radial support bracket and conveys it to the unloading conveyor chain. The unloading conveyor chain is equipped with an unloading bracket, which is used to hold the inner steel ring.

[0017] Preferably, the steel ring transfer robot assembly includes an X-axis linear module, a Y-axis linear module, a Z-axis linear module and a clamping module;

[0018] The X-axis linear module is used to adjust the position of the clamping module along the X-axis;

[0019] The Y-axis linear module is used to adjust the position of the clamping module along the Y-axis;

[0020] The Z-axis linear module is used to adjust the position of the clamping module along the Z-axis;

[0021] The clamping module is used to automatically clamp / relax the inner ring.

[0022] Preferably, the ends of the inner steel ring are all provided with through holes, the clamping module includes a lifting frame, the sides of the lifting frame are provided with guide holes facing the middle and obliquely downward, the angle between the guide hole and the horizontal plane is 45 degrees, a guide pin is installed in the guide hole, the bottom of the guide pin is connected to the clamping block, the top side of the clamping block is slidably installed with a compensation block in the guide hole, and the bottom end is provided with an oblique upward compensation block on the side relative to the middle of the lifting frame, the compensation block moves obliquely relative to the clamping block, and a compensation inclined surface is provided obliquely upward toward the middle on the side opposite to the bottom end of the clamping block, and a guide groove and a circulating guide groove are provided on the compensation inclined surface. The compensation block is provided with a guide block adapted to the guide groove and a rotatable hook rod. The hook rod is a thin rod with a hook head at the end, and the hook head moves back and forth along the circulating guide groove.

[0023] Preferably, the circulation guide groove includes an ascending long groove, a descending short groove, an ascending short groove and a descending long groove, and the inlet depth of each groove is smaller than the outlet depth;

[0024] The upward long trough and the downward long trough are symmetrically arranged, and the downward short trough and the upward short trough are symmetrically arranged;

[0025] The inlet of the ascending long trough intersects with the outlet of the descending long trough, the outlet of the ascending long trough intersects with the inlet of the descending short trough, the outlet of the descending short trough intersects with the inlet of the ascending short trough, and the outlet of the ascending short trough intersects with the inlet of the descending long trough;

[0026] The intersection height of the exit of the descending short trough and the entrance of the ascending short trough is lower than the intersection height of the exit of the ascending long trough and the entrance of the descending short trough;

[0027] The height of the intersection point of the outlet of the ascending long trough and the inlet of the descending short trough is flush with the height of the intersection point of the outlet of the ascending short trough and the inlet of the descending long trough.

[0028] Preferably, when the steel ring transfer robot assembly clamps the inner steel ring, the X-axis linear module and the Y-axis linear module adjust the lifting frame to be located on the top of the inner steel ring, and the lifting frame is lowered vertically through the Z-axis linear module. The bottom of the compensation block on the compensation slope of the clamping block first contacts the outer wall of the inner steel ring. As the lifting frame continues to be lowered, it moves upward along the compensation slope through the cooperation of the guide groove and the guide block until the hook head at the end of the hook rod moves from the entrance of the upper long groove to the entrance of the lower short groove. As the lifting frame continues to be lowered, the clamping block and the compensation block move outward relative to the lifting frame. It moves obliquely upward until the opposite side of the compensation block breaks away from the outer circumference of the steel ring and fits onto the end face, and moves downward relative to the clamping block, that is, the hook head enters the entrance of the upward short slot, and the clamping block also moves downward relative to the lifting frame after the compensation block moves downward relatively, ensuring that the opposite side of the compensation block always fits onto the end face of the steel ring. At this time, the distance between the top of the clamping side of the clamping block and the bottom of the compensation block is less than or equal to the width of the clamping area. As the lifting frame continues to lower, the clamping sides of the compensation block and the clamping block enter the clamping area, and will automatically enter and hook with the clamping area.

[0029] Finally, the lifting frame is driven upward vertically by the Z-axis linear module to complete the action of automatically separating from the inner ring steel ring.

[0030] Preferably, the radial support frame is equipped with a central radial frame, side roller frames symmetrically distributed on both sides, and an adjusting cylinder for driving the central radial frame to move. The side roller frames are rotatably mounted on the radial support frame, and the central radial frame is slidably mounted on the radial support frame. The movement direction of the central radial frame is toward the axis direction of the inner ring steel ring. Slope guide surfaces are provided on both sides of the central radial frame, and the slope guide surfaces are arranged at 45 degrees to the movement direction of the central radial frame.

[0031] The side rolling frame includes an L-shaped frame and rollers. The top of the L-shaped frame is used to support the inner ring steel ring, and the body is rotatably installed on the radial support frame. The rollers are installed at the bottom of the L-shaped frame and fit on the slope guide surface. The bottoms of the L-shaped frames of the two side rolling frames are connected by springs.

[0032] Preferably, when grinding the outer cylindrical groove of the inner steel ring, the movement directions of the grinding wheel and the central radial frame are on the same radial line and are distributed on both sides of the axis of the inner steel ring.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] The present invention continuously inputs the inner steel ring by utilizing a feeding conveyor chain, and automatically clamps and releases it through a steel ring transfer robot without the need for a clamping drive component, and transports it to a radial support bracket, and axially transports it to the clamping station of the steel ring fixing mechanism through a driving cylinder. The electromagnet is energized to axially adsorb and fix the inner steel ring to prevent axial movement, and cooperates with the radial support bracket to support it to ensure that it prevents radial jump during high-speed rotation. At the same time, the support center and grinding point of the radial support bracket are respectively located on both sides of the steel ring axis, so that the grinding process is always in a stable state, ensuring processing accuracy. After the processing is completed, the electromagnet is de-energized to separate the steel ring and the turntable, and it is completely supported by the radial support bracket. The steel ring is then reset to its initial position through the driving cylinder, and then clamped and transported to the unloading conveyor chain by the steel ring transfer robot, thereby realizing the fully automatic, high-precision, and high-efficiency grinding operation of the steel ring, and the surface is left without marks. Secondly, two sets of side roller frames are set on the radial support frame, which can adjust the distance between the two support ends by changing the position of the central radial frame, thereby adapting to the different sizes of steel rings. It also strictly controls the grinding point and the support center to be located on the same steel ring diameter line, and the grinding point and the support center are located on both sides of the steel ring axis, so that the radial mechanical direction of the steel ring is opposite during grinding, and the force of the grinding wheel on the steel ring is transferred to the radial support frame, ensuring that the grinding position is consistent and the grinding process is stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A diagram of the equipment for processing the outer circular groove of the present invention;

[0036] Figure 2 A rear view of the apparatus for processing an outer circular groove according to the present invention;

[0037] Figure 3 This is the structural diagram of the loading conveyor chain and the unloading conveyor chain;

[0038] Figure 4 This is a schematic diagram of the overall structure of the steel ring transfer robot assembly;

[0039] Figure 5 This is a state diagram of the lifting frame of the present invention when transporting steel rings;

[0040] Figure 6 This is a state diagram of the lifting frame of the present invention before transporting the steel ring;

[0041] Figure 7 This is a diagram showing the state of the lifting frame of the present invention after transferring the steel ring;

[0042] Figure 8 The connection relationship between the compensation block and the clamping body of the present invention is Figure 1 ;

[0043] Figure 9A diagram showing the connection relationship between the circulation guide groove and the hooking rod of the present invention;

[0044] Figure 10 The connection relationship between the compensation block and the clamping body of the present invention is Figure 2 ;

[0045] Figure 11 It is a front view of the radial support bracket of the present invention.

[0046] 10. Loading conveyor chain; 101. Loading bracket; 20. Unloading conveyor chain; 21. Unloading bracket; 30. Steel ring transfer robot assembly; 31. X-axis linear module; 32. Y-axis linear module; 33. Z-axis linear module; 34. Clamping module; 341. Lifting frame; 342. Guide pin; 343. Clamping block; 344. Compensation block; 345. Guide groove; 346. Ring guide groove; 3461. Upward long groove; 3462. Downward short groove; 3463. Upward short groove; 3 464. Downward long groove; 347. Guide block; 348. Hook rod; 349. Hook head; 40. Radial support bracket; 41. Center radial frame; 411. Slope guide surface; 42. Side rolling frame; 421. L-shaped frame; 422. Roller; 423. Spring; 50. Drive cylinder; 60. Roller; 70. Mounting frame 1; 71. Servo motor; 72. Rotary shaft; 73. Rotary disk; 731. Electromagnet; 74. Cross slide; 80. Grinding wheel; 81. Grinding motor. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0048] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0049] Example 1, as Figures 1 to 3 As shown, a fully automatic machining process for the outer cylindrical groove of a bearing comprises the following steps:

[0050] S100, steel ring loading

[0051] The inner steel ring is transported to the loading station via a loading conveyor chain 10. A loading bracket 101 is provided on the loading conveyor chain 10. The loading bracket 101 is used to hold the inner steel ring;

[0052] The inner steel ring is clamped by the steel ring transfer robot assembly 30 and transported to the temporary support transition area. A radial support bracket 40 is installed in the temporary support transition area. A steel ring fixing mechanism is installed on the rear side of the clamping station. A driving cylinder 50 is installed at the bottom of the radial support bracket 40. The driving cylinder 50 is used to drive the radial support bracket 40 towards or away from the steel ring fixing mechanism.

[0053] The radial support bracket 40 is used to temporarily support the inner steel ring from the outside. The top of the radial support bracket 40 is provided with a roller 60, and the roller 60 and the inner steel ring are in rolling engagement;

[0054] Control the driving cylinder 50 to move the temporarily supported inner steel ring to the clamping position of the steel ring fixing mechanism;

[0055] S200, steel ring fixed

[0056] The steel ring fixing mechanism includes a mounting frame 70, on which a servo motor 71 and a rotary shaft 72 are mounted. The rotary shaft 72 is mounted on the output end of the servo motor 71. A rotary disk 73 is mounted on the end of the rotary shaft 72 away from the servo motor 71. The servo motor 71 drives the rotary disk 73 to rotate at high speed through the rotary shaft 72. The rotary disk 73 is embedded with an electromagnet 731 and a positioning pin for circumferentially fixing the steel ring. When the electromagnet 731 is energized, it adsorbs and fixes the end face of the inner steel ring temporarily supported by the radial support bracket 40, thereby completing the adsorption and fixation of the inner steel ring.

[0057] S300, external groove grinding

[0058] A cross-shaped slide 74 is installed at the bottom of the mounting frame 1 70. By controlling the motor on the cross-shaped slide 74, the position of the inner steel ring relative to the grinding wheel 80 is adjusted, and the grinding motor 81 drives the grinding wheel 80 to rotate at high speed to grind the outer groove of the inner steel ring at high speed until the outer groove is ground.

[0059] S400, steel ring blanking

[0060] The electromagnet 731 is powered off, the steel ring is separated from the rotary disk 73 and is completely supported by the radial support bracket 40. The driving cylinder 50 drives the radial support bracket 40 and the inner steel ring with the outer groove ground to return to the temporary support transition area.

[0061] The steel ring transfer robot assembly 30 clamps the inner steel ring on the radial support bracket 40 and conveys it to the unloading conveyor chain 20. The unloading conveyor chain 20 is equipped with a unloading bracket 21, which is used to hold the inner steel ring.

[0062] Example 2, in the bearing outer groove processing process, as Figures 4 to 10As shown, the steel ring transfer manipulator assembly 30 comprises an X-axis linear module 31, a Y-axis linear module 32, a Z-axis linear module 33 and a clamping module 34;

[0063] The X-axis linear module 31 is used to adjust the position of the clamping module 34 along the X-axis;

[0064] The Y-axis linear module 32 is used to adjust the position of the clamping module 34 along the Y-axis;

[0065] The Z-axis linear module 33 is used to adjust the position of the clamping module 34 along the Z-axis;

[0066] The clamping module 34 is used to automatically clamp / relax the inner ring steel ring.

[0067] The inner ring steel ring end is uniformly distributed with a through hole, which is a mounting hole provided by the steel ring, and a positioning pin is inserted into the through hole. The clamping module 34 comprises a lifting frame 341, the side portions of the lifting frame 341 are provided with guide holes which are inclined downward towards the middle portion and the included angle between the guide holes and the horizontal plane is 45°, guide pins 342 are installed in the guide holes, the bottom of each guide pin 342 is connected with a clamping block 343, the top end of the clamping block 343 is provided on one side with a guide hole, the bottom end of the clamping block 343 is provided on one side with a compensation block 344 which is inclined upward towards the middle portion of the lifting frame 341, the compensation block 344 moves obliquely relative to the clamping block 343, the bottom end of the clamping block 343 is provided on the opposite side with a compensation inclined surface which is inclined upward towards the middle portion, the compensation inclined surface is provided with a guide groove 345 and a circulating guide groove 346, the compensation block 344 is provided with a guide block 347 which is adapted to the guide groove 345 and a hook rod 348 which is rotatably arranged, the hook rod 348 is a thin rod and is provided at the end with a hook head 349, and the hook head 349 reciprocates along the circulating guide groove 346.

[0068] The circulating guide groove 346 comprises an uplink long groove 3461, a downlink short groove 3462, an uplink short groove 3463 and a downlink long groove 3464, and the depth of the inlet of each groove is less than the depth of the outlet of each groove;

[0069] The uplink long groove 3461 and the downlink long groove 3464 are symmetrically arranged, and the downlink short groove 3462 and the uplink short groove 3463 are symmetrically arranged;

[0070] The inlet of the uplink long groove 3461 and the outlet of the downlink long groove 3464 meet, the outlet of the uplink long groove 3461 and the inlet of the downlink short groove 3462 meet, the outlet of the downlink short groove 3462 and the inlet of the uplink short groove 3463 meet, and the outlet of the uplink short groove 3463 and the inlet of the downlink long groove 3464 meet;

[0071] The height of the meeting point of the outlet of the downlink short groove 3462 and the inlet of the uplink short groove 3463 is lower than the height of the meeting point of the outlet of the uplink long groove 3461 and the inlet of the downlink short groove 3462;

[0072] The height of the intersection of the outlet of the up long groove 3461 and the inlet of the down short groove 3462 is flush with the height of the intersection of the outlet of the up short groove 3463 and the inlet of the down long groove 3464.

[0073] When the inner ring steel ring is clamped by the steel ring transfer manipulator assembly 30, the X-axis linear module 31 and the Y-axis linear module 32 adjust the position of the lifting frame 341 to the top of the inner ring steel ring, and the Z-axis linear module 33 vertically lowers the lifting frame 341, the clamping block 343 compensates for the compensation block 344 on the inclined surface, and the bottom of the compensation block 344 first contacts the outer wall of the inner ring steel ring, and then the lifting frame 341 continues to lower, and the compensation block 344 and the clamping block 343 are matched along the compensation inclined surface to move upward, until the hook head 349 at the end of the hooking rod 348 moves from the inlet of the up long groove 3461 to the inlet of the down short groove 3462, and then the lifting frame 341 continues to lower, the clamping block 343 and the compensation block 344 move outward and upward relative to the lifting frame 341, until the compensation block 344 on the opposite side is separated from the outer periphery of the steel ring and is attached to the end face, and then moves downward relative to the clamping block 343, that is, the hook head 349 enters the inlet of the up short groove 3463, and then the clamping block 343 moves downward relative to the lifting frame 341 after the compensation block 344 moves downward, so that the compensation block 344 on the opposite side is always attached to the end face of the steel ring, and the distance between the clamping side of the clamping block 343 and the bottom of the compensation block 344 is less than or equal to the width of the clamping area, and then the compensation block 344 and the clamping block 343 enter the clamping area and are hooked with the clamping area.

[0074] When the inner ring steel ring is clamped by the steel ring transfer manipulator assembly 30, the X-axis linear module 31 and the Y-axis linear module 32 adjust the position of the lifting frame 341 to the top of the inner ring steel ring, and the Z-axis linear module 33 vertically lowers the lifting frame 341, the clamping block 343 compensates for the compensation block 344 on the inclined surface, and the bottom of the compensation block 344 first contacts the outer wall of the inner ring steel ring, and then the lifting frame 341 continues to lower, and the compensation block 344 and the clamping block 343 are matched along the compensation inclined surface to move upward, until the hook head 349 at the end of the hooking rod 348 moves from the inlet of the up long groove 3461 to the inlet of the down short groove 3462, and then the lifting frame 341 continues to lower, the clamping block 343 and the compensation block 344 move outward and upward relative to the lifting frame 341, until the compensation block 344 on the opposite side is separated from the outer periphery of the steel ring and is attached to the end face, and then moves downward relative to the clamping block 343, that is, the hook head 349 enters the inlet of the up short groove 3463, and then the clamping block 343 moves downward relative to the lifting frame 341 after the compensation block 344 moves downward, so that the compensation block 344 on the opposite side is always attached to the end face of the steel ring, and the distance between the clamping side of the clamping block 343 and the bottom of the compensation block 344 is less than or equal to the width of the clamping area, and then the compensation block 344 and the clamping block 343 enter the clamping area and are hooked with the clamping area.

[0075] In the bearing outer circle groove machining process, as Figure 11As shown, the radial support bracket 40 is equipped with a central radial frame 41, side roller frames 42 symmetrically distributed on both sides, and an adjusting cylinder that drives the central radial frame 41 to move. The side roller frames 42 are rotatably mounted on the radial support bracket 40, and the central radial frame 41 is slidably mounted on the radial support bracket 40. The movement direction of the central radial frame 41 is toward the axis direction of the inner ring steel ring. Slope guide surfaces 411 are provided on both sides of the central radial frame 41. The slope guide surfaces 411 are set at 45 degrees to the movement direction of the central radial frame 41.

[0076] The side rolling frames 42 consist of an L-shaped frame 421 and rollers 422. The top of the L-shaped frame 421 supports the inner steel ring, while the body is rotatably mounted on the radial support bracket 40. The rollers 422 are mounted on the bottom of the L-shaped frame 421 and fit onto the sloped guide surface 411. The bottoms of the L-shaped frames 421 of the two side rolling frames 42 are connected via springs 423. The position of the central radial frame 41 is adjusted by adjusting the cylinder 43, and the distance between the bottoms of the two L-shaped frames 421 can be adjusted using the sloped guide surface 411, thereby adjusting the position of the two rollers 60, thereby achieving radial support for workpieces of different sizes.

[0077] The radial support bracket 40 is driven by the driving cylinder 50 to transport the steel ring axially, and the positioning pin and the through hole are adapted to the axial socket, and the steel ring is fixed under the adsorption action of the electromagnet. In order to ensure the stability of the steel ring during processing, the roller 60 is used to support it at the bottom side. The grinding point of the grinding wheel and the roller support point are respectively located on both sides of the workpiece axis, and the center of the roller support point and the grinding point are located on the same radial line and distributed on both sides of the axial direction. Figure 11 shown.

[0078] When grinding the outer cylindrical groove of the inner steel ring, the grinding wheel 80 and the center radial frame 41 move in the same radial line and are distributed on both sides of the axis of the inner steel ring.

[0079] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. The replacement may be a replacement of a portion of a structure, device, or method step, or it may be a complete technical solution. Any equivalent replacement or modification based on the technical solution and inventive concept of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A fully automatic machining process for the outer groove of a bearing, characterized in that the steps include: S100, steel ring loading The inner steel ring is transported to the loading station via a loading conveyor chain (10), and a loading bracket (101) is provided on the loading conveyor chain (10), and the loading bracket (101) is used to hold the inner steel ring; The inner steel ring is clamped by the steel ring transfer manipulator assembly (30) and transported to the temporary support transition area, where a radial support bracket (40) is installed, a steel ring fixing mechanism is installed at the rear side of the clamping station, and a driving cylinder (50) is installed at the bottom of the radial support bracket (40), which is used to drive the radial support bracket (40) to move closer to or away from the steel ring fixing mechanism; The radial support bracket (40) is used to temporarily support the inner steel ring from the outside. The top of the radial support bracket (40) is provided with a roller (60), and the roller (60) and the inner steel ring are in rolling cooperation; Controlling the driving cylinder (50) to drive the temporarily supported inner steel ring to move to the clamping station of the steel ring fixing mechanism; S200, steel ring fixed The steel ring fixing mechanism includes a mounting frame (70), a servo motor (71) and a rotary shaft (72) are installed on the mounting frame (70), the rotary shaft (72) is installed on the output end of the servo motor (71), a rotary disk (73) is installed at one end of the rotary shaft (72) away from the servo motor (71), the servo motor (71) drives the rotary disk (73) to perform high-speed rotary motion through the rotary shaft (72), and an electromagnet (731) is embedded in the rotary disk (73), and the electromagnet (731) is energized to adsorb and fix the end face of the inner ring steel ring temporarily supported by the radial support bracket (40), thereby completing the adsorption and fixation of the inner ring steel ring; S300, external groove grinding A cross-shaped slide (74) is installed at the bottom of the mounting frame (70). By controlling the motor on the cross-shaped slide (74), the position of the inner steel ring relative to the grinding wheel (80) is adjusted, and the grinding motor (81) drives the grinding wheel (80) to rotate at high speed to grind the outer groove of the inner steel ring at high speed until the outer groove grinding is completed; S400, steel ring blanking The electromagnet (731) is powered off, the steel ring is separated from the rotary disk (73) and is completely supported by the radial support bracket (40), and the driving cylinder (50) drives the radial support bracket (40) and the inner ring steel ring with the outer groove ground to reset to the temporary support transition area; The steel ring transfer manipulator assembly (30) clamps the inner steel ring on the radial support bracket (40) and transports it to the blanking conveyor chain (20). The blanking conveyor chain (20) is equipped with a blanking bracket (21) for holding the inner steel ring.

2. The fully automatic machining process for the outer groove of a bearing according to claim 1, characterized in that: The steel ring transfer robot assembly (30) includes an X-axis linear module (31), a Y-axis linear module (32), a Z-axis linear module (33) and a clamping module (34); The X-axis linear module (31) is used to adjust the position of the clamping module (34) along the X-axis; The Y-axis linear module (32) is used to adjust the position of the clamping module (34) along the Y-axis; The Z-axis linear module (33) is used to adjust the position of the clamping module (34) along the Z-axis; The clamping module (34) is used for automatically clamping / relaxing the inner ring.

3. The fully automatic machining process for the outer groove of a bearing according to claim 2, characterized in that: The ends of the inner steel ring are all provided with through holes, and the clamping module (34) includes a lifting frame (341), and the sides of the lifting frame (341) are all provided with guide holes facing the middle and obliquely downward, and the angle between the guide hole and the horizontal plane is 45 degrees, and a guide pin (342) is installed in the guide hole, and the bottom of the guide pin (342) is connected to a clamping block (343), and the top side of the clamping block (343) is slidably installed with a compensation block (344) in the guide hole, and the bottom side relative to the middle of the lifting frame (341) is provided with an obliquely upward compensation block (344), and the compensation block ( The compensating block (344) moves obliquely relative to the clamping block (343), and a compensation slope is provided on the side opposite to the bottom end of the clamping block (343) obliquely upward toward the middle, and a guide groove (345) and a circulation guide groove (346) are provided on the compensation slope. The compensating block (344) is provided with a guide block (347) adapted to the guide groove (345) and a rotatably arranged hook rod (348), and the hook rod (348) is a thin rod with a hook head (349) provided at the end, and the hook head (349) reciprocates along the circulation guide groove (346).

4. A fully automatic machining process for the outer groove of a bearing according to claim 3, characterized in that: The circulation guide groove (346) includes an upward long groove (3461), a downward short groove (3462), an upward short groove (3463) and a downward long groove (3464), and the inlet depth of each is smaller than the outlet depth; The upward long groove (3461) and the downward long groove (3464) are symmetrically arranged, and the downward short groove (3462) and the upward short groove (3463) are symmetrically arranged; The inlet of the ascending long trough (3461) and the outlet of the descending long trough (3464) intersect, the outlet of the ascending long trough (3461) and the inlet of the descending short trough (3462) intersect, the outlet of the descending short trough (3462) and the inlet of the ascending short trough (3463) intersect, and the outlet of the ascending short trough (3463) and the inlet of the descending long trough (3464) intersect; The height of the intersection of the outlet of the descending short trough (3462) and the inlet of the ascending short trough (3463) is lower than the height of the intersection of the outlet of the ascending long trough (3461) and the inlet of the descending short trough (3462); The height of the intersection of the outlet of the ascending long trough (3461) and the inlet of the descending short trough (3462) is flush with the height of the intersection of the outlet of the ascending short trough (3463) and the inlet of the descending long trough (3464).

5. The fully automatic machining process for the outer groove of a bearing according to claim 4, characterized in that: When the steel ring transfer manipulator assembly (30) clamps the inner steel ring, the X-axis linear module (31) and the Y-axis linear module (32) adjust the lifting frame (341) to be located at the top of the inner steel ring, and the lifting frame (341) is lowered vertically by the Z-axis linear module (33). The bottom of the compensation block (344) on the compensation slope of the clamping block (343) first contacts the outer wall of the inner steel ring. As the lifting frame (341) continues to be lowered, it moves upward along the compensation slope through the cooperation of the guide groove (345) and the guide block (347) until the hook head (349) at the end of the hook rod (348) moves from the entrance of the upward long groove (3461) to the entrance of the downward short groove (3462). As the lifting frame (341) continues to be lowered, the clamping block (343) and the compensation block (344) move together. The lifting frame (341) moves obliquely upward outward until the opposite side of the compensation block (344) is separated from the outer peripheral surface of the steel ring and fits on the end surface, and moves downward relative to the clamping block (343), that is, the hook head (349) enters the entrance of the upward short groove (3463), and the clamping block (343) also moves downward relative to the lifting frame (341) after the compensation block (344) moves downward relative to the lifting frame (341), ensuring that the opposite side of the compensation block (344) is always fitted on the end surface of the steel ring. At this time, the distance between the top of the clamping side of the clamping block (343) and the bottom of the compensation block (344) is less than or equal to the width of the clamping area. As the lifting frame (341) continues to be lowered, the clamping sides of the compensation block (344) and the clamping block (343) enter the clamping area and automatically enter and hook with the clamping area.

6. The fully automatic machining process for the outer groove of a bearing according to claim 5, characterized in that: When the steel ring transfer manipulator assembly (30) loosens the inner steel ring, the X-axis linear module (31) and the Y-axis linear module (32) adjust the position of the lifting frame (341) to move the inner steel ring to the top of the target station, and the lifting frame (341) is lowered vertically by the Z-axis linear module (33). When the bottom of the inner steel ring falls on the station, as the lifting frame (341) continues to be lowered, the bottom of the compensation block (344) will first abut against the bottom of the clamping area, and as it continues to be lowered, the hook head (349) will enter the entrance of the downward long slot (3464), and then as it continues to be lowered, the compensation block (344) and the clamping block (346) will be in contact with each other. 43) move outward relative to the clamping area until the compensation block (344) and the clamping block (343) are completely separated from the clamping area. After being separated from the clamping area, the compensation block (344) moves downward relative to the clamping block (343), that is, the hook head (349) enters the entrance of the upward long groove (3461). At this time, the distance between the bottom surface of the compensation block (344) and the top surface of the clamping side of the clamping block (343) is greater than the width of the clamping area, and it is ensured that the top surface of the compensation block (344) does not separate from the top end surface of the inner ring steel ring. Finally, the Z-axis linear module (33) drives the lifting frame (341) upward vertically to complete the action of automatically separating from the inner ring steel ring.

7. The fully automatic machining process for the outer groove of a bearing according to claim 6, characterized in that: The radial support frame (40) is provided with a central radial frame (41), side roller frames (42) symmetrically distributed on both sides, and an adjusting cylinder for driving the central radial frame (41) to move. The side roller frames (42) are rotatably installed on the radial support frame (40), and the central radial frame (41) is slidably installed on the radial support frame (40). The movement direction of the central radial frame (41) is toward the axis direction of the inner ring steel ring. Slope guide surfaces (411) are provided on both sides of the central radial frame (41), and the slope guide surfaces (411) are provided at 45 degrees to the movement direction of the central radial frame (41). The side rolling frame (42) includes an L-shaped frame (421) and a roller (422). The top of the L-shaped frame (421) is used to support the inner ring steel ring, and the body is rotatably mounted on the radial support frame (40). The roller (422) is mounted on the bottom of the L-shaped frame (421) and is attached to the slope guide surface (411). The bottoms of the L-shaped frames (421) of the two side rolling frames (42) are connected via a spring (423).

8. The fully automatic machining process for the outer groove of a bearing according to claim 7, characterized in that: When grinding the outer circular groove of the inner steel ring, the grinding wheel (80) and the central radial frame (41) move in the same radial line and are distributed on both sides of the axis of the inner steel ring.

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