A bearing thrust spherical surface grinder and method of using same

Abstract

The application discloses a bearing thrust spherical surface grinding machine and a use method thereof, and relates to the technical field of bearing machining. The bearing thrust spherical surface grinding machine comprises a base, a clamping unit, a moving unit, a rotating unit, a grinding unit and a cooling unit. A workpiece is fixed and clamped on the clamping unit. An inner side of the workpiece is a machined spherical surface. The moving unit comprises a guide groove and a sliding base. The sliding base is in sliding connection with the guide groove. The rotating unit comprises a support, a shaft base and a rotating shaft. A first hydraulic rod is movably arranged between the bottom surface of the shaft base and the top of the sliding base. The grinding unit comprises a grinding wheel. A plurality of collecting grooves are arranged in an annular array on the circumferential surface of the grinding wheel. The application prevents metal powder from gathering between the grinding wheel and the raceway surface, and facilitates the cleaning of the mixture of the metal powder and the cooling liquid attached to the grinding wheel and the raceway surface.

Description

Technical Field

[0001] This invention relates to the field of bearing processing technology, specifically to a bearing thrust spherical grinding machine and its usage method. Background Technology

[0002] The precision of thrust ball bearings is mainly reflected in the raceway, especially the surface roughness and shape accuracy of the raceway, which are important standards for measuring the precision and quality of bearings. In order to improve the precision and service life of bearings, it is necessary to improve the machining technology of the shaft ring and improve the surface quality of the raceway. Some existing non-standard thrust ball bearings have a curved spherical structure for the shaft ring raceway. In order to improve the precision of the raceway, the curved spherical raceway needs to be ground.

[0003] Chinese patent application number 2010105714298 discloses a special machine tool for composite grinding of the raceway and flange of a thrust self-aligning roller bearing, aiming to complete the processing of the flange and raceway in one operation and ensure machining accuracy. The technical solution is as follows: a headstock slide is set on the machine bed surface, and the headstock slide is placed on the headstock slide, which can slide back and forth; an electromagnetic centerless chuck is fixed on the output shaft of the headstock slide, and the workpiece is clamped on the electromagnetic centerless chuck; the grinding wheel headstock is fixed on the support plate, and the support plate is placed on the support plate slide, which can slide left and right; the grinding wheel is fixed on the output shaft of the grinding wheel headstock, and the contour line of the grinding wheel working surface is composed of straight lines and curves; the workpiece axis is perpendicular to the grinding wheel axis. However, a lot of metal powder is generated during the grinding process, and the metal powder will be trapped between the grinding wheel and the raceway surface, affecting normal grinding.

[0004] Furthermore, the adhesion of metal shavings to the coolant increases after mixing, and the mixture of metal powder and coolant adheres to the grinding wheel and raceway surface, accelerating the wear of the grinding wheel and easily scratching the grinding surface of the raceway. Moreover, due to its high 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 grinding machine and its method of use, which prevents metal powder from accumulating between the grinding wheel and the raceway surface, and facilitates the cleaning of the mixture of metal powder and coolant adhering to the grinding wheel and raceway surface, and can effectively solve the problems in the background art.

[0006] To achieve the above objectives, 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 a workpiece is fixedly clamped on the clamping unit, and one side of the workpiece is a spherical surface to be processed;

[0007] The moving unit includes a guide groove and a slide block, wherein the slide block is slidably connected to the guide groove;

[0008] The rotating unit includes a support, a bearing, and a rotating shaft, and a first hydraulic rod is movably disposed between the bottom surface of the bearing and the top of the slide.

[0009] The grinding unit includes a grinding wheel with a collection groove arranged in a ring on its circumference. A movable seat is slidably fitted inside the collection groove. A side plate is provided on the outer end face of the movable seat. A limiting plate corresponding to the collection groove is provided on the side of the grinding wheel. A guide rod is movably inserted through the middle of the limiting plate. A return spring is sleeved on the outside of the guide rod 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. A ratchet is fixedly sleeved on the output shaft of the adjusting motor.

[0010] Furthermore, the base has an L-shaped structure, and 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 located on the top of the electric turntable, the clamping unit is located on one side of the base, the moving unit is located on the other side of the base, the rotating unit is located on the top of the moving unit, and the grinding unit is located at the end of the rotating unit.

[0011] Furthermore, the clamping unit includes a fixed arm, which is located on one side of the base. The top of the fixed arm is equipped with a hydraulic cylinder, and the bottom extension end of the hydraulic cylinder is equipped with a rotary motor. The output shaft of the rotary motor is equipped with a three-jaw chuck.

[0012] Furthermore, the guide groove is formed on the other side of the base, and a screw is rotatably connected in the guide groove. The slide is threaded onto the screw, and a moving motor is provided at the end of the base. The output shaft of the moving motor is fixedly connected to the end of the screw.

[0013] Furthermore, the support is located on the top of the slide, a mounting column is rotatably connected to the side of the support, the bearing is located on the top of the mounting column, the rotating shaft passes through and is rotatably connected to the middle of the bearing, and a driving mechanism is provided on the bearing.

[0014] Furthermore, the driving mechanism includes a secondary gear and a drive motor. The secondary gear is fixedly sleeved on the end of the rotating shaft away from the clamping unit. The output shaft of the drive motor is fixedly sleeved with a primary gear, and the primary gear meshes with the secondary gear.

[0015] Furthermore, the grinding wheel is located at one end of the rotating shaft near the clamping unit. The circumferential surface of the grinding wheel is configured as an arc-shaped structure corresponding to the machined spherical surface along the thickness direction. The outer surface of the movable seat is configured as an arc-shaped structure with the same circumferential surface as the grinding wheel. The end of the guide rod is fixedly connected to the side plate. The two ends of the return spring are fixedly connected to the side plate and the limiting plate, respectively. The ratchet teeth on the outer side of the ratchet are correspondingly engaged with the end of the guide rod.

[0016] Furthermore, the cooling unit includes a rotary cylinder, which is located on top of the electric turntable. A cooling seat is located on top of the rotary cylinder, and a second hydraulic rod is located on top of the cooling seat. A mounting seat is located at the top telescopic end of the second hydraulic rod. A nozzle is rotatably mounted inside the mounting seat via a pin. A motor is located on the side of the mounting seat, and the output shaft of the motor is fixedly connected to the end of the pin. A hose is located at the water inlet end of the nozzle, and the hose is connected to an external coolant supply system.

[0017] The present invention also provides a method of using a bearing thrust spherical grinding machine, the method comprising the following steps:

[0018] S1. The workpiece is clamped and fixed using the clamping unit, and the machined spherical surface of the workpiece faces downward.

[0019] S2. The grinding unit is moved to below the workpiece using the moving unit, and the grinding unit is moved upward by the extension of the first hydraulic rod driving the end of the rotating shaft.

[0020] S3. As the grinding unit moves upward, the rotating shaft drives the grinding wheel to rotate, and the workpiece is rotated by the clamping unit. The circumferential surface of the grinding wheel is in contact with the spherical surface to complete the grinding of the spherical surface.

[0021] S4. During grinding, the cooling unit is directed toward the grinding wheel, and the cooling liquid sprayed by the cooling unit is used to cool the grinding wheel.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] 1. In the grinding process, the metal powder on the circumferential surface of the grinding wheel is pushed into the collection groove. The metal powder is discharged along both sides of the arc surface of the movable seat. The arc structure of the movable seat facilitates the discharge of metal powder in the collection 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 force of the grinding wheel when it is discharged.

[0024] 2. This invention adjusts the forward and reverse rotation of the ratchet driven by the motor, and under the action of the return spring, the guide rod drives the movable seat to reciprocate. During the reciprocating motion of the movable seat, the arc surface of the movable seat repeatedly pushes the metal powder to both sides of the collection tank, thereby accelerating the discharge of metal debris from the collection tank.

[0025] 3. After grinding is completed, the present invention maintains the angle and rotation of the grinding wheel, uses a motor to make the nozzle face the bottom of the grinding wheel, and uses the nozzle to spray high-pressure cleaning fluid to rinse the grinding wheel. At the same time, the movable seat reciprocates. When the movable seat moves to the outermost side of the collection tank, the arc surface of the movable seat is exactly coplanar with the arc circumferential surface of the grinding wheel, thus deeply cleaning the metal powder attached to the collection tank and the movable seat.

[0026] 4. This invention uses a rubber seat to clean the grinding wheel, the collection groove, and the moving seat simultaneously, causing the grinding wheel to detach from the machined spherical surface. During the reciprocating motion of the moving seat, the rotation amplitude of the motor is adjusted so that one-third of the moving seat extends out of the collection groove and comes into contact with the machined spherical surface. Then, the workpiece is rotated, and the moving seat, in conjunction with the rotation of the workpiece and the grinding wheel, comes into contact with the machined spherical surface to clean the mixture of metal powder and coolant adhering to the circumferential arc surface of the grinding wheel, the inside of the collection groove, and the machined spherical surface. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the axial structure of the present invention;

[0029] Figure 3 This is a schematic diagram of the rotating unit structure of the present invention;

[0030] Figure 4 This is a schematic diagram of the grinding unit structure of the present invention;

[0031] Figure 5 This is a schematic diagram of the cooling unit structure of the present invention;

[0032] Figure 6 This is a front view structural diagram of the present invention;

[0033] Figure 7 This is a schematic diagram of the workpiece structure of the present invention.

[0034] In the diagram: 1. Base; 101. Electric turntable; 102. Water tank; 2. Clamping unit; 201. Fixed arm; 202. Hydraulic cylinder; 203. Rotary motor; 204. Three-jaw chuck; 205. Workpiece; 2051. Machining spherical surface; 3. Moving unit; 301. Guide groove; 302. Screw; 303. Slide; 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. Drive motor; 408. Main gear; 5. Grinding unit; 501. Grinding wheel; 502. Collection tank; 503. Movable seat; 504. Side plate; 505. Limiting plate; 506. Guide rod; 507. Return spring; 508. Adjusting motor; 509. Ratchet; 6. Cooling unit; 601. Rotary cylinder; 602. Cooling seat; 603. Second hydraulic rod; 604. Mounting seat; 605. Nozzle; 606. Motor; 607. Hose. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Example 1

[0037] Please see Figure 1-7 This embodiment provides a technical solution: a bearing thrust spherical grinding machine, 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 has an L-shaped structure. The clamping unit 2 is located on one side of the base 1, and a workpiece 205 is fixedly clamped on the clamping unit 2. One side of the workpiece 205 is a machined 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 located on the other side of the base 1 and is used for the feed movement of the grinding unit 5. The rotating unit 4 is located on top of the moving unit 3 and is used to drive the grinding unit 5 to rotate. The grinding unit 5 is located at the end of the rotating unit 4 and is used to grind the machined spherical surface 2051. The cooling unit 6 is located on top of the electric rotary table 101 and is used to cool the grinding unit 5 and the workpiece 205 during the grinding process.

[0038] The surface of the base 1 is provided with an electric turntable 101. 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. The water storage tank 102 is used to collect the spilled coolant.

[0039] The clamping unit 2 includes a fixed arm 201, which is located on one side of the base 1. A hydraulic cylinder 202 is provided at the top of the fixed arm 201. The hydraulic cylinder 202 drives the three-jaw chuck 204 to move downward. A rotary motor 203 is provided at the bottom extension end of the hydraulic cylinder 202. The rotary motor 203 drives the three-jaw chuck 204 to rotate. The output shaft of the rotary 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.

[0040] The moving unit 3 includes a guide groove 301 and a slide 303. The guide groove 301 is located on the other side of the base 1. A screw 302 is rotatably connected inside the guide groove 301. The slide 303 is slidably connected to the guide groove 301 and threaded onto the screw 302. A moving motor 304 is provided at the end of the base 1. The output shaft of the moving motor 304 is fixedly connected to the end of the screw 302. The rotation of the moving motor 304 drives 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.

[0041] The rotating unit 4 includes a support 401, a bearing 403, and a rotating shaft 404. The support 401 is located on the top of the slide 303, and a mounting column 402 is rotatably connected to the side of the support 401. The bearing 403 is located on the top of the mounting column 402. The rotating shaft 404 passes through and is rotatably connected to the middle of the bearing 403. A driving mechanism is provided on the bearing 403 to drive the rotating shaft 404 to rotate, thereby realizing the rotation of the grinding unit 5. A first hydraulic rod 405 is movably provided between the bottom surface of the bearing 403 and the top surface of the slide 303. The two ends of the first hydraulic rod 405 are respectively hinged to the bottom surface of the bearing 403 and the top surface of the slide 303. The extension and retraction of the first hydraulic rod 405 causes the end of the bearing 403 to move up and down, thereby adjusting the angle of the grinding unit 5 so that the grinding wheel 501 fits against the spherical surface 2051 being processed.

[0042] The drive mechanism includes a secondary gear 406 and a drive motor 407. The secondary gear 406 is fixedly sleeved on the end of the rotating shaft 404 away from the clamping unit 2. The output shaft of the drive motor 407 is fixedly sleeved with a main gear 408. The main gear 408 meshes with the secondary gear 406. The drive motor 407 drives the main gear 408 to rotate, the main gear 408 drives the secondary gear 406 to rotate, and the secondary gear 406 drives the rotating shaft 404 to rotate, thereby realizing the rotation of the grinding unit 5.

[0043] The grinding unit 5 includes a grinding wheel 501, which is located at one end of the rotating shaft 404 near the clamping unit 2.

[0044] The cooling unit 6 includes a rotary cylinder 601 symmetrically arranged around the water storage tank 102. The rotary cylinder 601 is located on the top of the electric turntable 101 and is used for fine adjustment of the nozzle 605 angle. A cooling seat 602 is provided on the top of the rotary cylinder 601, and a second hydraulic rod 603 is provided 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 provided at the top telescopic end of the second hydraulic rod 603. The nozzle 605 is rotatably mounted in the mounting seat 604 via a pin. A motor 606 is provided on the side of the mounting seat 604. The output shaft of the motor 606 is fixedly connected to the end of the pin. The rotation of the motor 606 drives the nozzle 605 to rotate, thereby adjusting the spray angle of the nozzle 605. A hose 607 is provided 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 under high pressure through the nozzle 605.

[0045] In operation, the workpiece 205 is clamped in the three-jaw chuck 204 with the spherical surface 2051 facing downwards. The hydraulic cylinder 202 then moves the three-jaw chuck 204 downwards until it approaches the grinding wheel 501. Next, the moving motor 304 drives the screw 302 to rotate, and the linear motion of the slide 303 moves the grinding wheel 501 towards the workpiece 205. Then, the first hydraulic rod 405 extends, causing the end of the bearing 403 near the grinding unit 5 to move upwards, thus moving the grinding wheel 501 upwards. At this point, the grinding wheel 501 is tilted. Simultaneously, the drive motor 407 is activated, driving the rotating shaft 404 and the grinding wheel 501 to rotate via the main gear 408 and the secondary gear 406. During this process, the circumferential arc surface of the grinding wheel 501 gradually approaches the spherical surface 2051 until they are in contact. At the same time, the rotary motor 203 drives the three-jaw chuck 204 to rotate, allowing for continuous grinding of the spherical surface 2051.

[0046] It should be noted that, in order to improve grinding efficiency, such as Figure 6 As shown, the grinding wheel 501 rotates to the side away from the fixed arm 201, that is, clockwise, and the three-jaw chuck 204 also rotates clockwise.

[0047] During grinding, the external coolant supply system supplies coolant to the nozzle 605 through the hose 607. The spray angle of the nozzle 605 is adjusted by the rotation of the electric turntable 101 and the rotary cylinder 601, so that the sprayed coolant falls between the grinding wheel 501 and the machined spherical surface 2051 to dissipate heat and cool down the grinding wheel 501 and the machined spherical surface 2051. Some of the coolant that falls falls into the water storage tank 102 for collection.

[0048] However, during the processing, the mixture of metal powder and coolant generated by the grinding wheel 501 adheres to the circumferential arc surface of the grinding wheel 501, affecting normal grinding operations. Therefore, the following improvements are made:

[0049] The circumferential surface of the grinding wheel 501 is configured as an arc-shaped structure along the thickness direction to correspond with the machining spherical surface 2051. The circumferential surface of the grinding wheel 501 is configured as an arc-shaped structure to improve the fit with the machining spherical surface 2051. The circumferential surface of the grinding wheel 501 is provided with a collection groove 502 in a ring array. The collection groove 502 is used to collect the metal powder generated during grinding.

[0050] During grinding by the grinding wheel 501, the metal powder adhering to a portion of the circumferential arc surface of the grinding wheel 501 is pushed to the collection groove 502 for collection, effectively reducing the adhesion of metal powder on the circumferential arc surface of the grinding wheel 501.

[0051] However, due to the high adhesion of the metal powder and coolant mixture, the metal powder in the collection tank 502 is difficult to discharge in time, and some of the metal powder will be thrown back onto the workpiece 205 under the centrifugal force of the grinding wheel 501. To solve the above problems:

[0052] A movable seat 503 is slidably fitted inside the collection groove 502. The outer surface of the movable seat 503 is set with an arc-shaped structure that is the same as the circumferential surface of the grinding wheel 501.

[0053] The outer end face of the movable seat 503 is provided with a side plate 504. The side of the grinding wheel 501 is provided with a limiting plate 505 corresponding to the collecting groove 502. A guide rod 506 is movably passed through the middle of the limiting plate 505. The end of the guide rod 506 is fixedly connected to the side plate 504. A return spring 507 is sleeved on the outside of the guide rod 506 and located between the side plate 504 and the limiting plate 505. The two ends of the return spring 507 are fixedly connected to the side plate 504 and the limiting plate 505 respectively. The middle of the side of the grinding wheel 501 is provided with an adjustment... The motor 508 is adjusted, and a ratchet 509 is fixedly sleeved on the output shaft of the motor 508. The ratchet teeth on the outer side of the ratchet 509 are engaged with the end of the guide rod 506. The motor 508 drives the ratchet 509 to rotate, causing the ratchet teeth on the circumference of the ratchet 509 to rotate. The ratchet teeth are engaged 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. The return spring 507 is stretched, which facilitates the discharge of metal powder.

[0054] When in use, when the metal powder enters the collecting tank 502, the metal powder will move along the arc surface of the movable seat 503 to the two sides of the grinding wheel 501 and be discharged. The movable seat 503 is set with an arc structure, which accelerates the flow of the metal powder, so that the collected metal powder can be discharged quickly from the collecting tank 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 it is discharged.

[0055] Simultaneously, the regulating motor 508 is started, and the reciprocating motion of the regulating motor 508 drives the ratchet 509 to rotate in both directions. Under the tension and reset action of the return spring 507, the ratchet rotates in both directions, realizing the reciprocating sliding of the guide rod 506 and driving the movable seat 503 to reciprocate, thus realizing the high-frequency vibration of the movable seat 503. During the reciprocating motion of the movable seat 503, the arc surface of the movable seat 503 repeatedly pushes the metal powder to both sides of the collection tank 502, accelerating the discharge of metal debris from the collection tank 502. At this time, the stroke of the movable seat 503 is always less than two-thirds of the depth of the collection tank 502.

[0056] Additionally, after grinding, a mixture of metal powder and coolant will remain on the inner wall of the collection tank 502 and the movable seat 503. At this time, keeping the angle of the grinding wheel 501 unchanged and continuing to rotate, the motor 606 adjusts the tilt angle of the nozzle 605 so that the nozzle 605 faces the bottom of the grinding wheel 501. By connecting the hose 607 to an external cleaning fluid supply system, high-pressure cleaning fluid is sprayed from the nozzle 605 onto the grinding wheel 501. During rinsing, the movable seat 503 is reciprocated again by adjusting the forward and reverse rotation of the motor 508. 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 just coincides with the arc circumferential surface of the grinding wheel 501, so that all the metal powder in the collection tank 502 is pushed out by the movable seat 503, further cleaning the metal powder attached to the collection tank 502 and the movable seat 503. The falling cleaning fluid enters the water storage tank 102 for collection.

[0057] However, the above method is insufficient to clean the residual metal powder on the machined spherical surface 2051. Therefore, the movable seat 503 is made of rubber. While cleaning the collection groove 502 and the movable seat 503, the slight contraction of the first hydraulic rod 405 causes the arc-shaped circumferential surface of the grinding wheel 501 to disengage from the machined spherical surface 2051. During the reciprocating motion of the movable seat 503 within the collection groove 502, the stroke of the adjusting motor 508 is increased so that the end of the ratchet just moves to the end of the guide rod 506. At this time, one-third of the movable seat 503 extends out of the collection groove 502 and abuts against the machined 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, which still enables the arc surface of the movable seat 503 to fit with the processing spherical surface 2051. By using the rotary motor 203 to drive the three-jaw chuck 204 and the workpiece 205 to rotate, the movable seat 503 can fit with the processing spherical surface 2051 during the reciprocating motion, and cooperate with the rotation of the workpiece 205 and the grinding wheel 501 to clean the circumferential arc surface of the grinding wheel 501 and the inside of the collection groove 502. At the same time, the movable seat 503 scrapes off the mixture of metal powder and coolant attached to the processing spherical surface 2051.

[0058] Example 2

[0059] This embodiment provides a method for using a bearing thrust spherical grinding machine, which includes the following steps:

[0060] S1. Use the clamping unit 2 to clamp and fix the workpiece 205, and make the machined spherical surface 2051 of the workpiece 205 face downward;

[0061] S2. The grinding unit 5 is moved to below the workpiece 205 by the moving unit 3, and the grinding unit 5 is moved upward by the extension of the first hydraulic rod 405 driving the end of the rotating shaft 404.

[0062] S3. While the grinding unit 5 moves upward, the rotating shaft 404 drives the grinding wheel 501 to rotate, and the clamping unit 2 rotates the workpiece 205, so that the circumferential surface of the grinding wheel 501 is in contact with the spherical surface 2051 to complete the grinding of the spherical surface 2051.

[0063] S4. During grinding, the cooling unit 6 is directed toward the grinding wheel 501, and the cooling liquid sprayed from the cooling unit 6 is used to cool the grinding wheel 501.

[0064] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. 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 a workpiece is fixedly clamped on the clamping unit, and one inner side of the workpiece is a spherical surface to be machined; characterized in that, The moving unit includes a guide groove and a slide block, wherein the slide block is slidably connected to the guide groove; The rotating unit includes a support, a bearing, and a rotating shaft, and a first hydraulic rod is movably disposed between the bottom surface of the bearing and the top of the slide. The grinding unit includes a grinding wheel, on which a collection groove is arranged in a ring array on the circumference of the grinding wheel. A movable seat is slidably fitted inside the collection groove. A side plate is provided on the outer end face of the movable seat. A limiting plate corresponding to the collection groove is provided on the side of the grinding wheel. A guide rod is movably inserted through the middle of the limiting plate. A return spring is sleeved on the outside of the guide rod 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. A ratchet is fixedly sleeved on the output shaft of the adjusting motor. The grinding wheel is located at one end of the rotating shaft near the clamping unit. The circumferential surface of the grinding wheel is configured with an arc shape along the thickness direction to correspond to the machining spherical surface. The outer surface of the movable seat is configured with the same arc shape 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 return spring are fixedly connected to the side plate and the limiting plate, respectively. The ratchet teeth on the outer side of the ratchet are correspondingly engaged with the end of the guide rod. The travel of the movable seat is always less than two-thirds of the depth of the collecting groove. The movable seat is made of rubber. While cleaning the collection tank and the movable seat, the slight contraction of the first hydraulic rod causes the arc-shaped circumferential surface of the grinding wheel to separate from the machined spherical surface. During the reciprocating motion of the movable seat in the collection tank, the movement stroke of the adjusting motor is increased so that the end of the ratchet just moves to the end of the guide rod. At this time, one-third of the movable seat extends out of the collection tank and comes into contact with the machined spherical surface. The motor is used to adjust the tilt angle of the nozzle so that the nozzle faces the bottom of the grinding wheel, and high-pressure cleaning fluid is sprayed from the nozzle to rinse the grinding wheel.

2. The bearing thrust spherical grinding machine according to claim 1, characterized in that: The base has an L-shaped structure, and 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 located on the top of the electric turntable. The clamping unit is located on one side of the base. The moving unit is located on the other side of the base. The rotating unit is located on the top of the moving unit. The grinding unit is located at the end of the rotating unit.

3. The bearing thrust spherical grinding machine according to claim 1, characterized in that: The clamping unit includes a fixed arm, which is located on one side of the base. A hydraulic cylinder is provided at the top of the fixed arm, and a rotary motor is provided at the bottom telescopic end of the hydraulic cylinder. A three-jaw chuck is provided on the output shaft of the rotary motor.

4. The bearing thrust spherical grinding machine according to claim 1, characterized in that: The guide groove is located on the other side of the base, and a screw is rotatably connected inside the guide groove. The slide is threaded onto the screw. A moving motor is provided at the end of the base, and the output shaft of the moving motor is fixedly connected to the end of the screw.

5. The bearing thrust spherical grinding machine according to claim 1, characterized in that: The support is located on the top of the slide, and a mounting column is rotatably connected to the side of the support. The bearing is located on the top of the mounting column, and the rotating shaft passes through and is rotatably connected to the middle of the bearing. A driving mechanism is provided on the bearing.

6. The bearing thrust spherical grinding machine according to claim 5, characterized in that: The drive mechanism includes a secondary gear and a drive motor. The secondary gear is fixedly sleeved on the end of the rotating shaft away from the clamping unit. The output shaft of the drive motor is fixedly sleeved with a main gear, and the main gear meshes with the secondary gear.

7. The bearing thrust spherical grinding machine according to claim 2, characterized in that: The cooling unit includes a rotary cylinder located on top of the electric turntable. A cooling seat is located on top of the rotary cylinder, and a second hydraulic rod is located on top of the cooling seat. A mounting seat is located at the top telescopic end of the second hydraulic rod. A nozzle is rotatably mounted inside the mounting seat via a pin. A motor is located on the side of the mounting seat, and the output shaft of the motor is fixedly connected to the end of the pin. A hose is located at the water inlet end of the nozzle, and the hose is connected to an external coolant supply system.

8. A method of using a bearing thrust spherical grinding machine, wherein the method utilizes the bearing thrust spherical grinding machine as described in any one of claims 1-7 to perform grinding, characterized in that: Includes the following steps: S1. The workpiece is clamped and fixed using the clamping unit, and the spherical surface of the workpiece is machined. Facing downwards; S2. The grinding unit is moved to below the workpiece using the moving unit, and the grinding unit is moved upward by the extension of the first hydraulic rod driving the end of the rotating shaft. S3. As the grinding unit moves upward, the rotating shaft drives the grinding wheel to rotate, and the clamping unit rotates the workpiece. The circumferential surface of the grinding wheel is in contact with the spherical surface to complete the grinding of the spherical surface. S4. During grinding, the cooling unit is directed toward the grinding wheel, and the cooling liquid sprayed by the cooling unit is used to cool the grinding wheel.

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