Bearing thrust spherical grinding machine and using method thereof

Abstract

The invention discloses a bearing thrust spherical grinding machine and a using method thereof, and relates to the technical field of bearing machining, the bearing thrust spherical grinding machine comprises a base, a clamping unit, a moving unit, a rotating unit, a grinding unit and a cooling unit, a workpiece is fixedly clamped on the clamping unit, one side of the interior of the workpiece is a machining spherical surface, and the other side of the interior of the workpiece is a machining spherical surface; the moving unit comprises a guide groove and a sliding seat, the sliding seat is slidably connected with the guide groove, the rotating unit comprises a support, a shaft seat and a rotating shaft, a first hydraulic rod is movably arranged between the bottom face of the shaft seat and the top of the sliding seat, and the grinding unit comprises a grinding wheel. Collecting grooves are formed in the circumferential face of the grinding wheel in an annular array mode. Metal powder is prevented from being gathered between the grinding wheel and the surface of the raceway, and a mixture of the metal powder and cooling liquid attached to the grinding wheel and the surface of the raceway can be cleaned conveniently.

Description

Technical Field

[0001] The invention relates to the technical field of bearing processing, in particular to a bearing thrust spherical grinding machine and a use method thereof. Background Art

[0002] The accuracy of thrust ball bearings is mainly reflected in the raceway, especially the surface roughness and shape accuracy of the raceway, which are important criteria for measuring bearing accuracy and quality. In order to improve the accuracy and service life of the bearing, it is necessary to improve the processing technology of the shaft ring and improve the surface quality of the raceway. The raceway of some existing non-standard thrust ball bearings is an arc-shaped spherical structure. In order to improve the raceway accuracy, the arc-shaped spherical raceway needs to be ground.

[0003] The Chinese patent application number 2010105714298 discloses a special machine tool for composite grinding of thrust spherical roller bearing shaft ring raceway and rib, so as to complete the processing of rib and raceway at one time and ensure the processing accuracy. The technical scheme is as follows: a headstock axle box slideway is set on the machine bed, and the headstock axle box is placed on the headstock axle box slideway and can slide forward and backward; the electromagnetic centerless clamp is fixed on the headstock axle box output shaft, and the workpiece is clamped on the electromagnetic centerless clamp; the grinding wheel axle box is fixed on the support plate, and the support plate is placed on the support plate slideway and can slide left and right; the grinding wheel is fixed on the grinding wheel axle box output shaft, and the grinding wheel working surface contour line is composed of straight lines and curves; the workpiece axis is perpendicular to the grinding wheel axis. However, a lot of metal powder will be generated during the grinding process, and the metal powder will be sandwiched between the grinding wheel and the raceway surface, affecting normal grinding.

[0004] Moreover, the adhesion of metal chips is enhanced after mixing with coolant, and the mixture of metal powder and coolant will adhere to the grinding wheel and raceway surface, accelerate the wear of the grinding wheel, and easily scratch the grinding surface of the shaft ring raceway. Moreover, due to the large adhesion, the mixture of metal powder and coolant is difficult to clean. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the existing defects and provide a bearing thrust spherical grinder and a method of using the same, which prevents metal powder from accumulating between the grinding wheel and the raceway surface and facilitates cleaning of the mixture of metal powder and coolant attached to the grinding wheel and the raceway surface, thereby effectively solving the problems in the background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a bearing thrust spherical grinding machine, comprising a base, a clamping unit, a moving unit, a rotating unit, a grinding unit and a cooling unit, wherein the clamping unit is used to fix a workpiece, and one side of the workpiece is a processed spherical surface; The moving unit comprises a guide groove and a slide seat, and the slide seat is slidably connected to the guide groove; The rotating unit comprises a support, an axle seat and a rotating shaft, and a first hydraulic rod is movably provided between the bottom surface of the axle seat and the top of the sliding seat; The grinding unit includes a grinding wheel, a collecting groove is provided in a ring array on the circumferential surface of the grinding wheel, a movable seat is slidably fitted in the collecting groove, a side plate is provided on the outer end surface of the movable seat, a limiting plate corresponding to the collecting groove is provided on the side of the grinding wheel, a guide rod is movably penetrated through the middle of the limiting plate, a return spring is sleeved on the outside of the guide rod and at a position between the side plate and the limiting plate, an adjusting motor is provided in the middle of the side of the grinding wheel, and a ratchet is fixedly sleeved on the output shaft of the adjusting motor.

[0007] Furthermore, the base is an L-shaped structure, an electric turntable is provided on the surface of the base, a water storage tank is provided in the middle of the top surface of the electric turntable, the cooling unit is provided on the top of the electric turntable, the clamping unit is provided on one side of the base, the moving unit is provided on the other side of the base, the rotating unit is provided on the top of the moving unit, and the grinding unit is provided at the end of the rotating unit.

[0008] Furthermore, the clamping unit includes a fixed arm, which is arranged on one side of the base, a hydraulic cylinder is provided on the top of the fixed arm, a rotating motor is provided at the bottom telescopic end of the hydraulic cylinder, and a three-jaw chuck is provided on the output shaft of the rotating motor.

[0009] Furthermore, the guide groove is opened on the other side of the base, a screw is rotatably connected in the guide groove, the slide seat is threadedly sleeved on the screw, a movable motor is provided at the end of the base, and the output shaft of the movable motor is fixedly connected to the end of the screw.

[0010] Furthermore, the support is arranged on the top of the slide, the side of the support is rotatably connected to a mounting column, the shaft seat is arranged on the top of the mounting column, the rotating shaft passes through and is rotatably connected to the middle of the shaft seat, and a driving mechanism is provided on the shaft seat.

[0011] Furthermore, the driving mechanism includes a secondary gear and a driving motor, the secondary gear is fixedly sleeved on one end of the rotating shaft away from the clamping unit, the output shaft of the driving motor is fixedly sleeved with a main gear, and the main gear is meshed with the secondary gear.

[0012] Furthermore, the grinding wheel is arranged at one end of the rotating shaft close to the clamping unit, the circumferential surface of the grinding wheel is arranged along the thickness direction as an arc structure corresponding to the processed spherical surface, the outer surface of the movable seat is arranged as the same arc structure as the circumferential surface of the grinding wheel, the end of the guide rod is fixedly connected to the side plate, the two ends of the reset spring are respectively fixedly connected to the side plate and the limit plate, and the ratchet teeth on the outside of the ratchet wheel correspond to the end of the guide rod.

[0013] Furthermore, the cooling unit includes a rotating cylinder, which is arranged on the top of the electric turntable. A cooling seat is provided on the top of the rotating cylinder. A second hydraulic rod is provided on the top of the cooling seat. A mounting seat is provided at the top telescopic end of the second hydraulic rod. A nozzle is provided in the mounting seat through rotation of a pin shaft. A motor is provided on the side of the mounting seat. The output shaft of the motor is fixedly connected to the end of the pin shaft. A hose is provided at the water inlet end of the nozzle, and the hose is connected to an external coolant supply system.

[0014] The present invention also provides a method for using a bearing thrust spherical grinding machine, which comprises the following steps: S1, using the clamping unit to clamp and fix the workpiece, and make the machined spherical surface of the workpiece face downward; S2, using the moving unit to move the grinding unit to below the workpiece, and using the extension of the first hydraulic rod to drive the end of the rotating shaft to drive the grinding unit to move upward; S3, while the grinding unit moves upward, the rotating shaft drives the grinding wheel to rotate, and the clamping unit is used to rotate the workpiece, and the circumferential surface of the grinding wheel is fitted with the processed spherical surface to complete the grinding of the processed spherical surface; S4. While grinding, the cooling unit is directed toward the grinding wheel, and the grinding wheel is cooled by the coolant sprayed from the cooling unit.

[0015] Compared with the prior art, the present invention has the following advantages: 1. In the present invention, during the grinding process, the metal powder on the circumferential surface of the grinding wheel is pushed into the collecting groove, and the metal powder is discharged along the two sides of the arc surface of the movable seat. The arc structure of the movable seat is arranged to facilitate the discharge of the metal powder in the collecting groove. At the same time, the arc structure changes the discharge direction of the metal powder, preventing the metal powder from being thrown onto the workpiece under the centrifugal action of the grinding wheel when being discharged.

[0016] 2. The present invention drives the ratchet wheel to rotate forward and backward by adjusting the motor, and realizes the reciprocating motion of the movable seat driven by the guide rod under the action of the reset spring. During the reciprocating motion of the movable seat, the arc surface of the movable seat is used to repeatedly push the metal powder to both sides of the collecting tank, thereby accelerating the discharge of metal debris from the collecting tank.

[0017] 3. After grinding, the present invention maintains the angle and rotation of the grinding wheel, uses a motor to direct the nozzle toward the bottom of the grinding wheel, and uses the nozzle to spray high-pressure cleaning liquid to rinse the grinding wheel. At the same time, the movable seat is reciprocated. When the movable seat moves to the outermost side of the collecting tank, the arc surface of the movable seat is just coplanar with the arc circumferential surface of the grinding wheel, so that the metal powder attached to the collecting tank and the movable seat is deeply cleaned.

[0018] 4. The present invention sets the movable seat to be made of rubber material, so that the grinding wheel can be separated from the processing spherical surface while cleaning the grinding wheel, the collecting groove and the movable seat. During the reciprocating motion of the movable seat, by adjusting the rotation amplitude of the motor, one-third of the movable seat is extended out of the collecting groove and is in contact with the processing spherical surface, and then the workpiece is rotated. The movable seat is in contact with the processing spherical surface during the reciprocating motion, and cooperates with the rotation of the workpiece and the grinding wheel to clean the mixture of metal powder and coolant attached to the circumferential arc surface of the grinding wheel, the collecting groove and the processing spherical surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the shaft side structure of the present invention; Figure 3 It is a schematic diagram of the structure of the rotating unit of the present invention; Figure 4 It is a schematic diagram of the structure of the grinding unit of the present invention; Figure 5 It is a schematic diagram of the cooling unit structure of the present invention; Figure 6 It is a front view structural schematic diagram of the present invention; Figure 7 It is a schematic diagram of the workpiece structure of the present invention.

[0020] In the figure: 1, base; 101, electric turntable; 102, water storage tank; 2, clamping unit; 201, fixed arm; 202, hydraulic cylinder; 203, rotating motor; 204, three-jaw chuck; 205, workpiece; 2051, processing spherical surface; 3, moving unit; 301, guide groove; 302, screw; 303, slide seat; 304, moving motor; 4, rotating unit; 401, support; 402, mounting column; 403, shaft seat; 404, rotating shaft; 405, first hydraulic rod ; 406, secondary gear; 407, driving motor; 408, main gear; 5, grinding unit; 501, grinding wheel; 502, collecting tank; 503, movable seat; 504, side plate; 505, limit plate; 506, guide rod; 507, return spring; 508, adjusting motor; 509, ratchet; 6, cooling unit; 601, rotating cylinder; 602, cooling seat; 603, second hydraulic rod; 604, mounting seat; 605, nozzle; 606, motor; 607, hose. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Embodiment 1 See also Figure 1-7 , this embodiment provides a technical solution: a bearing thrust spherical grinder, including a base 1, a clamping unit 2, a moving unit 3, a rotating unit 4, a grinding unit 5 and a cooling unit 6, the base 1 is an L-shaped structure, the clamping unit 2 is arranged on one side of the base 1, the clamping unit 2 fixes and clamps a workpiece 205, the inner side of the workpiece 205 is a processed spherical surface 2051, the clamping unit 2 is used to clamp and fix the workpiece 205 and drive the workpiece 205 to rotate, the moving unit 3 is arranged on the other side of the base 1, the moving unit 3 is used for feeding and moving the grinding unit 5, the rotating unit 4 is arranged on the top of the moving unit 3, the rotating unit 4 is used to drive the grinding unit 5 to rotate, the grinding unit 5 is arranged at the end of the rotating unit 4, the grinding unit 5 is used for grinding the processed spherical surface 2051, the cooling unit 6 is arranged on the top of the electric turntable 101, and the cooling unit 6 is used to cool the grinding unit 5 and the workpiece 205 during the grinding process.

[0023] An electric turntable 101 is provided on the surface of the base 1, and a water storage tank 102 is provided in the middle of the top surface of the electric turntable 101. The electric turntable 101 is used to drive the cooling unit 6 to rotate and adjust the cooling angle, and the water storage tank 102 is used to collect spilled coolant.

[0024] The clamping unit 2 includes a fixed arm 201, which is arranged on one side of the base 1. A hydraulic cylinder 202 is provided on the top of the fixed arm 201, and the hydraulic cylinder 202 drives the three-jaw chuck 204 to move downward. A rotating motor 203 is provided at the bottom telescopic end of the hydraulic cylinder 202, and the rotating motor 203 drives the three-jaw chuck 204 to rotate. The output shaft of the rotating motor 203 is provided with the three-jaw chuck 204. The clamping unit 2 uses the three-jaw chuck 204 to clamp the outer circumferential surface of the workpiece 205.

[0025] The movable unit 3 includes a guide groove 301 and a slide 303. The guide groove 301 is opened on the other side of the base 1. A screw 302 is rotatably connected in the guide groove 301. The slide 303 is slidably connected to the guide groove 301. The slide 303 is threadedly sleeved on the screw 302. A movable motor 304 is provided at the end of the base 1. The output shaft of the movable motor 304 is fixedly connected to the end of the screw 302. The rotation of the movable motor 304 is used to drive the screw 302 to rotate, and the screw 302 drives the slide 303 to move, thereby realizing the feeding of the rotating unit 4 and the grinding unit 5.

[0026] The rotating unit 4 includes a support 401, an axle seat 403 and a rotating shaft 404. The support 401 is arranged on the top of the slide 303. The side of the support 401 is rotatably connected to the mounting column 402. The axle seat 403 is arranged on the top of the mounting column 402. The rotating shaft 404 passes through and is rotatably connected to the middle of the axle seat 403. A driving mechanism is provided on the axle seat 403. The driving mechanism is used to drive the rotating shaft 404 to rotate so as to realize the rotation of the grinding unit 5. A first hydraulic rod 405 is movably provided between the bottom surface of the axle seat 403 and the top of the slide 303. The two ends of the first hydraulic rod 405 are respectively hinged to the bottom surface of the axle seat 403 and the top of the slide 303. The extension and retraction of the first hydraulic rod 405 drives the end of the axle seat 403 to move up and down, so as to adjust the angle of the grinding unit 5 so that the grinding wheel 501 fits with the processed spherical surface 2051.

[0027] The driving mechanism includes a sub-gear 406 and a driving motor 407. The sub-gear 406 is fixedly sleeved on one end of the rotating shaft 404 away from the clamping unit 2. The output shaft of the driving motor 407 is fixedly sleeved with a main gear 408. The main gear 408 is meshed with the sub-gear 406. The driving motor 407 drives the main gear 408 to rotate, the main gear 408 drives the sub-gear 406 to rotate, and the sub-gear 406 drives the rotating shaft 404 to rotate, so as to realize the rotation of the grinding unit 5.

[0028] The grinding unit 5 includes a grinding wheel 501 . The grinding wheel 501 is disposed at one end of the rotating shaft 404 close to the clamping unit 2 .

[0029] The cooling unit 6 includes a rotating cylinder 601 symmetrically arranged around the water storage tank 102. The rotating cylinder 601 is arranged on the top of the electric turntable 101. The rotating cylinder 601 is used to fine-tune the angle of the nozzle 605. A cooling seat 602 is arranged on the top of the rotating cylinder 601. A second hydraulic rod 603 is arranged on the top of the cooling seat 602. The second hydraulic rod 603 is used to adjust the height of the nozzle 605. A mounting seat 604 is arranged at the top telescopic end of the second hydraulic rod 603. A nozzle 605 is arranged in the mounting seat 604 through a pin shaft. A motor 606 is arranged on the side of the mounting seat 604. The output shaft of the motor 606 is fixedly connected to the end of the pin shaft. The rotation of the motor 606 drives the nozzle 605 to rotate to adjust the spraying angle of the nozzle 605. A hose 607 is arranged at the water inlet end of the nozzle 605. The hose 607 is connected to an external coolant supply system. During the grinding process, the coolant supplied by the coolant supply system is sprayed out through the nozzle 605 at high pressure.

[0030] When in use, the workpiece 205 is clamped in the three-jaw chuck 204, and the processed spherical surface 2051 is facing downward, and the hydraulic cylinder 202 is used to drive the three-jaw chuck 204 to move downward to a position close to the grinding wheel 501, and then the moving motor 304 is started to drive the screw 302 to rotate, and the linear motion of the slide seat 303 is used to drive the grinding wheel 501 to move toward the workpiece 205, and then the first hydraulic rod 405 is extended to drive the shaft seat 403 to move upward at one end close to the grinding unit 5, so that the grinding wheel 501 moves upward. At this time, the grinding wheel 501 is in an inclined state, and the driving motor 407 is started at the same time, and the rotating shaft 404 and the grinding wheel 501 are driven to rotate through the main gear 408 and the sub-gear 406. In this process, the circumferential arc surface of the grinding wheel 501 gradually approaches the processed spherical surface 2051 until it fits, and at the same time, the rotating motor 203 is started to drive the three-jaw chuck 204 to rotate, so that the processed spherical surface 2051 can be continuously ground. It should be noted that in order to improve the grinding efficiency, Figure 6 As shown, the grinding wheel 501 rotates toward the side away from the fixed arm 201, that is, rotates clockwise, and the three-jaw chuck 204 also rotates clockwise.

[0031] While grinding, an external coolant supply system is used to pass the coolant into the nozzle 605 through the hose 607, and the rotation of the electric turntable 101 and the rotary cylinder 601 is used to adjust the spray angle of the nozzle 605, so that the sprayed coolant falls between the grinding wheel 501 and the processed spherical surface 2051, dissipating heat and cooling the grinding wheel 501 and the processed spherical surface 2051, and part of the fallen coolant falls into the water storage tank 102 for collection.

[0032] However, during the processing, the mixture of metal powder and coolant produced by grinding the grinding wheel 501 will adhere to the circumferential arc surface of the grinding wheel 501, affecting the normal grinding work, so the following improvements are made: The circumferential surface of the grinding wheel 501 is arranged in an arc structure along the thickness direction to correspond to the processing spherical surface 2051. The circumferential surface of the grinding wheel 501 is arranged in an arc structure to improve the fit with the processing spherical surface 2051. The circumferential surface of the grinding wheel 501 is provided with collecting grooves 502 in a circular array, and the collecting grooves 502 are used to collect metal powder generated by grinding.

[0033] When the grinding wheel 501 is grinding, the metal powder partially attached to the circumferential arc surface of the grinding wheel 501 is pushed to the collecting groove 502 for collection, thereby effectively reducing the adhesion of the metal powder on the circumferential arc surface of the grinding wheel 501 .

[0034] However, since the mixture of metal powder and coolant has high adhesion, the metal powder in the collecting tank 502 is difficult to be discharged in time, and part of the metal powder will be thrown out onto the workpiece 205 again under the action of the centrifugal force of the grinding wheel 501. In order to solve the above problems: A movable seat 503 is slidably fitted in the collecting groove 502 . The outer surface of the movable seat 503 is configured to have an arc structure that is the same as the circumferential surface of the grinding wheel 501 . The outer surface of the movable seat 503 is configured to have an arc structure.

[0035] The outer end surface of the movable seat 503 is provided with a side plate 504, and the side surface of the grinding wheel 501 is provided with a limit plate 505 corresponding to the collecting groove 502. A guide rod 506 is movably penetrated in the middle of the limit plate 505, and the end of the guide rod 506 is fixedly connected to the side plate 504. A reset spring 507 is sleeved on the outside of the guide rod 506 and located between the side plate 504 and the limit plate 505. The two ends of the reset spring 507 are respectively fixedly connected to the side plate 504 and the limit plate 505. An adjustment spring 507 is provided in the middle of the side surface of the grinding wheel 501. The regulating motor 508 and the output shaft of the regulating motor 508 are fixedly sleeved with a ratchet 509, and the ratchet teeth on the outside of the ratchet 509 correspond to the end of the guide rod 506. The regulating motor 508 drives the ratchet 509 to rotate, so that the ratchet teeth on the circumferential surface of the ratchet 509 rotate, and the ratchet teeth cooperate with the guide rod 506. When the bottom end of the guide rod 506 moves from the bottom of the ratchet teeth to the outer end of the ratchet teeth, the movable seat 503 moves to the side away from the center of the ratchet 509, and the reset spring 507 is stretched to facilitate the discharge of metal powder.

[0036] During use, when metal powder enters the collecting trough 502, the metal powder will move along the curved surfaces of the movable seat 503 on both sides to be discharged toward the two sides of the grinding wheel 501. The movable seat 503 is configured as an arc-shaped structure, which accelerates the fluidity of the metal powder, facilitates the rapid discharge of the collected metal powder from the collecting trough 502, and changes the discharge direction of the metal powder to prevent the metal powder from being thrown onto the workpiece 205 under the centrifugal action of the grinding wheel 501 when being discharged.

[0037] At the same time, the adjusting motor 508 is started, and the ratchet 509 is driven to rotate forward and backward by the forward and reverse reciprocating motion of the adjusting motor 508. The forward and reverse rotation of the ratchet realizes the reciprocating sliding of the guide rod 506 and drives the movable seat 503 to reciprocate under the action of the stretching and resetting of the reset spring 507, thereby realizing high-frequency vibration of the movable seat 503. During the reciprocating motion of the movable seat 503, the curved surface of the movable seat 503 is utilized to repeatedly push the metal powder to both sides of the collecting tank 502, thereby accelerating the discharge of metal debris from the collecting tank 502. At this time, the movement stroke of the movable seat 503 is always less than two-thirds of the depth of the collecting tank 502.

[0038] In addition, after grinding, a mixture of metal powder and coolant will remain on the inner wall of the collecting tank 502 and the movable seat 503. At this time, the angle of the grinding wheel 501 is kept unchanged, and the grinding wheel 501 is kept rotating. The motor 606 is used to adjust the tilt angle of the nozzle 605 so that the nozzle 605 is directed toward the bottom of the grinding wheel 501. By connecting the hose 607 to the external cleaning liquid supply system, the high-pressure cleaning liquid is sprayed through the nozzle 605 to clean the grinding wheel 501. The movable seat 503 is flushed and adjusted by the forward and reverse rotation of the motor 508 to make the movable seat 503 reciprocate again. At this time, when the movable seat 503 moves away from the center of the grinding wheel 501, the arc surface of the movable seat 503 coincides with the arc circumferential surface of the grinding wheel 501, so that all the metal powder in the collecting tank 502 is pushed out by the movable seat 503, and the metal powder attached to the collecting tank 502 and the movable seat 503 is further cleaned, and the fallen cleaning liquid enters the water storage tank 102 for collection.

[0039] However, it is difficult to clean the metal powder remaining on the processed spherical surface 2051 in the above method. Therefore, the movable seat 503 is set to be made of rubber material. While the collection tank 502 and the movable seat 503 are cleaned as mentioned above, the arc circumferential surface of the grinding wheel 501 is separated from the processed spherical surface 2051 by slightly contracting the first hydraulic rod 405. During the reciprocating motion of the movable seat 503 in the collection tank 502, the motion stroke of the regulating motor 508 is increased so that the end of the ratchet moves just to the end of the guide rod 506. At this time, one-third of the movable seat 503 extends out of the collection tank 502 and contacts and fits with the processed spherical surface 2051. 03 is made of rubber. Although the angle of the grinding wheel 501 changes at this time, the movable seat 503 has good elastic deformation ability, so the arc surface of the movable seat 503 and the processing spherical surface 2051 can still be fitted. The rotating motor 203 is used to drive the three-jaw chuck 204 and the workpiece 205 to rotate. During the reciprocating motion of the movable seat 503, the movable seat 503 can fit with the processing spherical surface 2051 and cooperate with the rotation of the workpiece 205 and the grinding wheel 501. While cleaning the circumferential arc surface of the grinding wheel 501 and the inside of the collecting groove 502, the movable seat 503 can be used to scrape off the mixture of metal powder and coolant attached to the processing spherical surface 2051.

[0040] Embodiment 2 This embodiment provides a method for using a bearing thrust spherical grinding machine, and the method comprises the following steps: S1, using the clamping unit 2 to clamp and fix the workpiece 205, and make the processed spherical surface 2051 of the workpiece 205 face downward; S2, using the moving unit 3 to move the grinding unit 5 to below the workpiece 205, and using the extension of the first hydraulic rod 405 to drive the end of the rotating shaft 404 to drive the grinding unit 5 to move upward; S3, the grinding unit 5 moves upward while the rotating shaft 404 drives the grinding wheel 501 to rotate, and the workpiece 205 is rotated by the clamping unit 2, and the circumferential surface of the grinding wheel 501 fits with the processing spherical surface 2051, so that the processing spherical surface 2051 is ground; S4. While grinding, the cooling unit 6 is directed toward the grinding wheel 501, and the grinding wheel 501 is cooled down by the cooling liquid sprayed from the cooling unit 6. The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A bearing thrust spherical grinding machine, comprising a base (1), a clamping unit (2), a moving unit (3), a rotating unit (4), a grinding unit (5) and a cooling unit (6), wherein a workpiece (205) is fixedly clamped on the clamping unit (2), and an inner side of the workpiece (205) is a machined spherical surface (2051); characterized in that: The moving unit (3) comprises a guide groove (301) and a sliding seat (303), and the sliding seat (303) is slidably connected to the guide groove (301); The rotating unit (4) comprises a support (401), an axle seat (403) and a rotating shaft (404); a first hydraulic rod (405) is movably provided between the bottom surface of the axle seat (403) and the top of the sliding seat (303); The grinding unit (5) comprises a grinding wheel (501), a collecting groove (502) is provided in an annular array on the circumferential surface of the grinding wheel (501), a movable seat (503) is slidably fitted in the collecting groove (502), a side plate (504) is provided on the outer end surface of the movable seat (503), a limiting plate (505) corresponding to the collecting groove (502) is provided on the side surface of the grinding wheel (501), a guide rod (506) is movably penetrated through the middle of the limiting plate (505), a return spring (507) is sleeved on the outside of the guide rod (506) and at a position between the side plate (504) and the limiting plate (505), an adjusting motor (508) is provided in the middle of the side surface of the grinding wheel (501), and a ratchet (509) is fixedly sleeved on the output shaft of the adjusting motor (508).

2. The bearing thrust spherical grinding machine according to claim 1, characterized in that: The base (1) is an L-shaped structure. An electric turntable (101) is provided on the surface of the base (1). A water storage tank (102) is provided in the middle of the top surface of the electric turntable (101). The cooling unit (6) is provided on the top of the electric turntable (101). The clamping unit (2) is provided on one side of the base (1). The moving unit (3) is provided on the other side of the base (1). The rotating unit (4) is provided on the top of the moving unit (3). The grinding unit (5) is provided at the end of the rotating unit (4).

3. The bearing thrust spherical grinding machine according to claim 1, characterized in that: The clamping unit (2) comprises a fixed arm (201), the fixed arm (201) being arranged on one side of the base (1), a hydraulic cylinder (202) being arranged on the top of the fixed arm (201), a rotating motor (203) being arranged on the bottom telescopic end of the hydraulic cylinder (202), and a three-jaw chuck (204) being arranged on the output shaft of the rotating motor (203).

4. The bearing thrust spherical grinding machine according to claim 1, characterized in that: The guide groove (301) is opened on the other side of the base (1), a screw rod (302) is rotatably connected in the guide groove (301), the slide seat (303) is threadedly sleeved on the screw rod (302), and a moving motor (304) is provided at the end of the base (1), and an output shaft of the moving motor (304) is fixedly connected to the end of the screw rod (302).

5. The bearing thrust spherical grinding machine according to claim 1, characterized in that: The support (401) is arranged on the top of the slide (303); the side of the support (401) is rotatably connected to a mounting column (402); the shaft seat (403) is arranged on the top of the mounting column (402); the rotating shaft (404) passes through and is rotatably connected to the middle of the shaft seat (403); and a driving mechanism is provided on the shaft seat (403).

6. The bearing thrust spherical grinding machine according to claim 5, characterized in that: The driving mechanism comprises a secondary gear (406) and a driving motor (407); the secondary gear (406) is fixedly sleeved on an end of the rotating shaft (404) away from the clamping unit (2); the output shaft of the driving motor (407) is fixedly sleeved with a main gear (408); the main gear (408) is meshed with the secondary gear (406).

7. The bearing thrust spherical grinding machine according to claim 5, characterized in that: The grinding wheel (501) is arranged at one end of the rotating shaft (404) close to the clamping unit (2); the circumferential surface of the grinding wheel (501) is arranged in a thickness direction to be an arc structure corresponding to the processed spherical surface (2051); the outer surface of the movable seat (503) is arranged to be an arc structure identical to the circumferential surface of the grinding wheel (501); the end of the guide rod (506) is fixedly connected to the side plate (504); the two ends of the return spring (507) are respectively fixedly connected to the side plate (504) and the limit plate (505); and the ratchet teeth on the outer side of the ratchet wheel (509) are corresponding to the end of the guide rod (506).

8. The bearing thrust spherical grinding machine according to claim 2, characterized in that: The cooling unit (6) comprises a rotating cylinder (601), wherein the rotating cylinder (601) is arranged on the top of the electric turntable (101), a cooling seat (602) is arranged on the top of the rotating cylinder (601), a second hydraulic rod (603) is arranged on the top of the cooling seat (602), a mounting seat (604) is arranged at the top telescopic end of the second hydraulic rod (603), a nozzle (605) is arranged in the mounting seat (604) through the rotation of a pin shaft, a motor (606) is arranged on the side of the mounting seat (604), an output shaft of the motor (606) is fixedly connected to the end of the pin shaft, a hose (607) is arranged at the water inlet end of the nozzle (605), and the hose (607) is connected to an external coolant supply system.

9. A method for using a bearing thrust spherical grinding machine, wherein the method uses the bearing thrust spherical grinding machine according to claim 1 to perform grinding, characterized in that: The following steps are involved: S1. Using the clamping unit (2) to clamp and fix the workpiece (205), and making the machined spherical surface (2051) of the workpiece (205) face downward; S2, using the moving unit (3) to move the grinding unit (5) to below the workpiece (205), and using the extension of the first hydraulic rod (405) to drive the end of the rotating shaft (404) to drive the grinding unit (5) to move upward; S3, the grinding unit (5) moves upward while the rotating shaft (404) drives the grinding wheel (501) to rotate, and the clamping unit (2) is used to rotate the workpiece (205), so that the circumferential surface of the grinding wheel (501) is in contact with the processing spherical surface (2051), thereby completing the grinding of the processing spherical surface (2051); S4. While grinding, the cooling unit (6) is directed toward the grinding wheel (501), and the grinding wheel (501) is cooled by the cooling liquid sprayed from the cooling unit (6).

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