A polishing device for bearing surface treatment

Abstract

The application discloses a polishing device for bearing surface treatment, and belongs to the technical field of bearing surface treatment, which comprises a base and a polishing head for polishing an inner ring or an outer ring, a mounting arm for driving the polishing head is installed on the upper side of the base, the polishing head is detachably mounted on the mounting arm, a plurality of suction cups for fixing the inner ring or the outer ring are further installed on the upper side of the base, a plurality of adsorption ports for collecting polishing waste chips are formed in the base, the adsorption ports and the suction cups are communicated with an external negative pressure vacuum pump through suction pipes, and a collecting frame for collecting waste chips is detachably mounted on the suction pipes, the inner ring or the outer ring to be polished is supported by the suction cups, the suction cups can fix the inner ring or the outer ring by utilizing negative pressure, the adsorption ports can suck the surrounding air by utilizing negative pressure, and the waste chips generated during polishing can be collected.

Description

Technical Field

[0001] This invention relates to a grinding device for bearing surface treatment, belonging to the field of bearing surface treatment technology. Background Technology

[0002] To ensure smooth bearing operation, the burrs on the surfaces of the inner and outer rings of the bearing need to be polished before assembly to ensure the smoothness of the inner and outer ring surfaces. During polishing, the inner or outer ring needs to be fixed. The current fixing methods usually adopt internal support fixing or external clamping fixing. Regardless of the fixing method, it will cover part of the outer surface of the inner or outer ring, making it impossible to polish the burrs on both the inner and outer surfaces of the inner or outer ring at the same time. At the same time, the clamping method may cause slight deformation of the inner or outer ring, or damage to the surface of the inner or outer ring.

[0003] Currently, some grinding devices use negative pressure to collect the waste generated during grinding, preventing the waste from splashing and being difficult to collect. If the negative pressure used to collect the waste can be used to fix the inner or outer ring, the problem caused by clamping can be solved well. Therefore, this invention provides a grinding device for bearing surface treatment. Summary of the Invention

[0004] To address the problems existing in the prior art, the present invention provides a grinding device for bearing surface treatment. The device uses a suction cup to fix the bearing with negative pressure, avoiding damage to the bearing caused by clamping. At the same time, the negative pressure can also be used to adsorb the waste chips generated during grinding.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a grinding device for bearing surface treatment, comprising a base and a grinding head for grinding an inner or outer ring. An mounting arm for driving the grinding head is installed on the upper side of the base. Rotation of the mounting arm can cause the grinding head to rotate circumferentially around the center of the base, thereby enabling grinding of the surface of the inner or outer ring of the bearing. The grinding head is detachably mounted on the mounting arm, allowing for the replacement of different grinding heads. Multiple suction cups for fixing the inner or outer ring are also installed on the upper side of the base. Multiple suction ports for collecting grinding debris are provided on the base. Both the suction ports and suction cups are connected to an external negative pressure vacuum pump via a suction pipe. The negative pressure vacuum pump generates negative pressure in the suction ports and suction cups, allowing the suction ports to collect debris and the suction cups to adhere and fix the inner or outer ring to be ground. A collection frame for collecting debris is detachably installed on the suction pipe. The debris collected by the suction ports is collected by the collection frame for easy cleaning.

[0006] Preferably, the mounting arm is height and rotation radius adjustable to suit grinding inner or outer rings of different sizes. The mounting arm includes a main shaft and an adjusting arm. The main shaft extends into the interior of the base and is connected to the motor shaft of the motor via a prism. Rotation of the motor shaft can drive the main shaft to rotate. The main shaft is connected to the output rod of the electric push rod via a rotating frame rotatably connected thereon. Extension and retraction of the output rod of the electric push rod can control the length of the main shaft.

[0007] The adjusting arm is inserted into a socket at the upper end of the main shaft, and a clamping bolt is installed at the upper end of the main shaft to limit the sliding of the adjusting arm. The sliding of the adjusting arm can be controlled by rotating the clamping bolt.

[0008] Preferably, a plate is fixedly connected to the grinding head, and a slot corresponding to the plate is opened at the end of the adjusting arm. A locking bolt for locking the plate is also engaged at the end of the adjusting arm. A through hole corresponding to the locking bolt is opened on the plate, so that the orientation of the grinding head can be adjusted by grinding the inner ring or the outer ring as needed.

[0009] Preferably, the multiple suction cups and multiple suction ports are arranged in a circular array on the base with the center of the base as the center, and the multiple rings have different radii. When placing the inner or outer ring, the center of the inner or outer ring can be aligned with the center of the base. Each suction cup has suction ports on both sides, and the arrangement of multiple suction ports in a circular array can improve the collection of waste.

[0010] Preferably, both the suction cup and the suction port are connected to the suction pipe through a transfer frame installed inside the base. When the external negative pressure vacuum pump is started, it will draw air from inside the transfer frame through the suction pipe. The outside air will enter the interior of the transfer frame through the suction cup and the suction port. The suction cup is provided with a limiting rod to prevent the suction cup from tilting. The lower end of the limiting rod is provided with a block to seal the suction cup. Multiple blocks located on the same ring are connected to each other through connecting rings. Multiple limiting rods located on the same ring are connected to each other through connecting rings. A buffer spring is installed between the connecting ring and the side wall of the transfer frame to make the block press against the lower end of the suction cup. The buffer spring pushes the block upward. When the suction cup does not have a fixed inner or outer ring, the block will keep the lower end of the suction cup sealed.

[0011] Preferably, a sealing ring is installed below the adsorption port and inside the base. A sealing spring is installed between the sealing ring and the side wall of the transfer frame. The sealing ring can be pressed against the upper side inside the base by the sealing spring. The sealing spring allows the sealing ring to fit tightly against the upper side inside the base without external force. The sealing ring is controlled to open by the adjacent connecting ring when it is under load. When the connecting ring is under load, the sealing rings on both sides of it will open.

[0012] Preferably, a lower pressure plate is fixedly connected to the connecting ring, and a support plate is fixedly connected to the sealing ring. The upper side of the support plate overlaps with the lower side of the lower pressure plate. When the connecting ring moves downward under load, the lower pressure plate on the connecting ring presses down the support plate it overlaps with, causing the corresponding sealing ring to move downward.

[0013] Preferably, the polishing head includes a base plate, on which a fixed polishing rod and a sliding polishing rod are respectively disposed. The sliding polishing rod is slidably mounted on the base plate by a clamping spring. The clamping spring has an elastic tendency to push the sliding polishing rod toward the fixed polishing rod. The fixed polishing rod and the sliding polishing rod can be pressed against the side surface of the inner ring or the outer ring by the clamping spring to improve the polishing effect. At this time, under the action of the clamping spring, both the fixed polishing rod and the sliding polishing rod will press against the side wall surface of the inner ring or the outer ring.

[0014] Preferably, the collection frame is inserted into the inside of the suction pipe, and the suction pipe has an opening that matches the collection frame. The opening of the collection frame faces the direction of the airflow. The bottom sidewall of the collection frame is a filter plate, which blocks the waste debris while allowing air to pass through. The bottom sidewall of the collection frame is a convex arc surface, which guides the blocked waste debris, allowing the collected waste debris to move around the filter plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. The inner or outer ring being polished is supported by a suction cup, and negative pressure is used to fix the inner or outer ring in place. At the same time, the negative pressure can cause the suction port to draw in the surrounding air and collect the polishing debris.

[0017] 2. A limiting rod is installed inside the suction cup. The limiting rod can prevent the suction cup from tilting without affecting the suction force, thus ensuring the support effect of the suction cup.

[0018] 3. A block is installed at the lower end of the limiting rod, and a sealing ring is installed at the lower end of the suction port. This ensures that only the suction cup supporting the inner or outer ring can communicate with the outside to draw air, and only the suction ports on both sides of the suction cup in working condition will open to collect waste, thus ensuring the suction effect of the suction cup and the collection effect of the suction port. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a schematic diagram showing the adjustment states of the fixed and sliding polishing rods of the present invention.

[0021] Figure 3This is a cross-sectional view of the base of the present invention;

[0022] Figure 4 This is an exploded view of the rotating frame and main shaft of the present invention;

[0023] Figure 5 This is an exploded view of the adjusting arm and the main shaft of the present invention;

[0024] Figure 6 This is an exploded view of the collection frame and the suction pipe of the present invention;

[0025] Figure 7 This is a schematic diagram showing the distribution of the connecting ring and sealing ring of the present invention;

[0026] Figure 8 This is a schematic diagram of the overlap between the pressure plate and the support plate of the present invention;

[0027] Figure 9 This is an exploded view of the insert plate and slot of the present invention;

[0028] Figure 10 This is a schematic diagram of the limiting rod of the present invention;

[0029] Figure 11 This is a schematic diagram showing the state of the fixed and sliding grinding rods grinding the outer ring according to the present invention;

[0030] Figure 12 This is a schematic diagram showing the state of the inner ring being polished by the fixed polishing rod and the sliding polishing rod according to the present invention.

[0031] In the diagram: 1. Base, 2. Grinding head, 201. Base plate, 202. Fixed grinding rod, 203. Sliding grinding rod, 204. Clamping spring, 3. Mounting arm, 301. Spindle, 302. Adjusting arm, 303. Tightening bolt, 4. Suction cup, 5. Suction port, 6. Suction pipe, 7. Limiting rod, 8. Prism, 9. Motor, 10. Rotating frame, 11. Electric push rod, 12. Insert plate, 13. Slot, 14. Locking bolt, 15. Transfer frame, 16. Connecting ring, 17. Buffer spring, 18. Sealing ring, 19. Sealing spring, 20. Lower pressure plate, 21. Support plate, 22. Support ring, 23. Collection frame, 24. Block. Detailed Implementation

[0032] The present invention is illustrated below with specific embodiments, but these are not intended to limit the invention.

[0033] Example

[0034] like Figure 1 and Figure 2The present invention provides a grinding device for bearing surface treatment, including a base 1 and a grinding head 2 for grinding an inner or outer ring. A mounting arm 3 for driving the grinding head 2 is mounted on the upper side of the base 1. The base 1 has a circular cross-section, and the mounting arm 3 is rotatably mounted at the center of the base 1. Rotation of the mounting arm 3 drives the grinding head 2 to rotate circumferentially around the center of the base 1, thereby enabling grinding of the surface of the inner or outer ring of the bearing. The grinding head 2 is detachably mounted on the mounting arm 3, allowing the orientation of the grinding head 2 to be changed depending on whether it is an inner or outer ring (e.g., ...). Figure 1 or Figure 2 (As shown), and different grinding heads 2 can be replaced to avoid prolonged use of the grinding head 2, which would affect the grinding effect. Multiple suction cups 4 are also installed on the upper side of the base 1 to fix the inner or outer ring. The suction cups 4 can adhere to the sides of the inner or outer ring, thereby supporting and fixing the inner or outer ring. Multiple suction ports 5 are provided on the base 1 to collect grinding debris. The suction ports 5 continuously draw air from their vicinity, creating a negative pressure around them. After the grinding debris falls around the suction ports 5, it is drawn up by the suction ports 5. The dust generated during grinding is collected to avoid the inconvenience of collecting and cleaning the flying debris. Both the suction port 5 and the suction cup 4 are connected to the external negative pressure vacuum pump through the suction pipe 6. The negative pressure vacuum pump can generate negative pressure in the suction port 5 and the suction cup 4, so that the suction port 5 can collect the dust and the suction cup 4 can adhere and fix the inner or outer ring to be ground. The suction pipe 6 is detachably equipped with a collection frame 23 for collecting dust. The dust collected by the suction port 5 will enter the interior of the suction pipe 6 and finally be collected by the collection frame 23, making it convenient to remove and clean the dust.

[0035] Furthermore, such as Figure 5As shown, in order to polish the surfaces of inner or outer rings of different sizes, the height and rotation radius of the mounting arm 3 are adjustable to accommodate the polishing of inner or outer rings of different sizes. The mounting arm 3 includes a main shaft 301 and an adjusting arm 302. The main shaft 301 extends into the interior of the base 1 and is connected to the motor shaft of the motor 9 via a prism 8. The motor 9 is installed inside the base 1 and is connected to an external power source via a cable. A prism 8 is fixedly connected to the motor shaft of the motor 9, and the main shaft 301 is inserted into the prism 8 through a slot. The rotation of the motor shaft of the motor 9 can drive the main shaft 301 to rotate via the prism 8. At the same time, the main shaft 301 rotates relative to the prism 8. The prism 8 can slide up and down. The main shaft 301 is connected to the output rod of the electric push rod 11 via a rotating frame 10 rotatably connected to it. The rotating frame 10 has a "U" shaped cross-section, with the two ends of the open end folded inward. The main shaft 301 has an annular groove that fits the rotating frame 10. The folded part of the open end of the main shaft 301 can be inserted into the annular groove, allowing the rotating frame 10 to rotate on the main shaft 301 without detaching (for ease of assembly, the rotating frame 10 can be divided into two parts from its closed end, and the two parts can be assembled together with screws). The open end of the rotating frame 10 is rotatably connected to a ball bearing. The ball bearings allow the rotating frame 10 to slide smoothly and stably with the main shaft 301 (e.g., ...). Figure 4 As shown, the height of the rotating frame 10 can be controlled by extending and retracting the output rod of the electric push rod 11, thereby adjusting the length of the main shaft 301 and the overall height of the mounting arm 3.

[0036] The motor 9 and the electric push rod 11 are connected to an external power source via cables, and the base 1 is equipped with buttons for controlling the start and stop of the motor 9 and the electric push rod 11.

[0037] The adjusting arm 302 is inserted into a socket at the upper end of the main shaft 301. The socket is a through hole that extends from both ends, and its size is adapted to the cross-sectional size of the adjusting arm 302. The adjusting arm 302 is L-shaped. The grinding head 2 is mounted on the short side wall of the adjusting arm 302. The long side wall of the adjusting arm 302 can be pulled back and forth inside the socket, thereby changing the distance between the short side wall of the adjusting arm 302 and the main shaft 301. This allows the grinding head 2 to perform circumferential motion around different radii to grind inner or outer rings of different sizes. The upper end of the main shaft 301 is equipped with a clamping bolt 303 to limit the sliding of the adjusting arm 302. The clamping bolt 303 extends into the socket. By rotating the clamping bolt 303, it is possible to control whether the clamping bolt 303 presses against the adjusting arm 302 and whether the adjusting arm 302 can slide.

[0038] Furthermore, such as Figure 9As shown, the grinding head 2 can be detachably installed in the following manner: a plate 12 is fixedly connected to the grinding head 2; a slot 13 corresponding to the plate 12 is opened at the end of the adjusting arm 302; a locking bolt 14 for locking the plate 12 is also engaged at the end of the adjusting arm 302; the plate 12 can be inserted into the slot 13; a through hole corresponding to the locking bolt 14 is opened on the plate 12; and a threaded hole corresponding to the locking bolt 14 is opened at the end of the adjusting arm 302. The orientation of the grinding head 2 can be adjusted according to grinding the inner or outer ring as needed (e.g., grinding the inner or outer ring). Figure 11 and Figure 12 As shown), the grinding head 2 is used to grind the inner or outer ring.

[0039] like Figure 1 As shown, multiple suction cups 4 and multiple suction ports 5 are arranged in a circular array on the base 1 with the center of the base 1 as the center. When placing the inner or outer ring, the center of the inner or outer ring can be aligned with the center of the base 1, and the side of the inner or outer ring can be placed on the suction cup 4. The suction cup 4 generates negative pressure to keep the inner or outer ring fixed. The multiple rings have different radii. Each suction cup 4 has suction ports 5 distributed on both sides. When the grinding head 2 grinds, it can grind both the inner and outer sides of the inner or outer ring at the same time. Therefore, grinding waste will be generated on both sides of the suction cup 4 at the same time. The suction ports 5 are distributed on both sides of the suction cup 4, and the circular array of multiple suction ports 5 can improve the collection of waste.

[0040] Furthermore, to ensure the suction cup 4 remains stable and does not tilt, a limiting rod 7 is installed on the inner or outer ring to restrict the movement direction of the suction cup 4. Simultaneously, to ensure the stability of the suction cup 4's adsorption, a block 24 is installed on the limiting rod 7. Both the suction cup 4 and the adsorption port 5 are connected to the suction pipe 6 via a transfer frame 15 installed inside the base 1. Multiple suction cups 4 and multiple adsorption ports 5 are connected to the transfer frame 15, which in turn is connected to the suction pipe 6. When an external negative pressure vacuum pump is activated, it draws air from inside the transfer frame 15 through the suction pipe 6. External air then enters the transfer frame 15 through the suction cups 4 and adsorption ports 5. The suction cup 4 has a limiting rod 7 inside to prevent tilting. The cross-sectional shape of the limiting rod 7 is radial (e.g., ...). Figure 10As shown), the radial surfaces of the limiting rod 7 are in contact with the inner wall of the suction cup 4, ensuring that the suction cup 4 only moves up and down without tilting, allowing the suction cup 4 to stably support the inner or outer ring. The lower end of the limiting rod 7 is provided with a block 24 for sealing the suction cup 4, and multiple blocks 24 located on the same ring are connected to each other by a connecting ring 16. A buffer spring 17 is installed between the connecting ring 16 and the side wall of the transfer frame 15 to press the block 24 against the lower end of the suction cup 4. One end of the buffer spring 17 is fixedly connected to the connecting ring 16 and the other end is fixedly connected to the transfer frame 15. The buffer spring 17 pushes the block 24 upward. When the suction cup 4 is not fixed with an inner or outer ring, the blocking block 24 will keep the lower end of the suction cup 4 sealed. At this time, the blocked suction cup 4 is not connected to the transfer frame 15, and the blocked suction cup 4 cannot suck air into the transfer frame 15. The suction cup 4 that is fixed with an inner or outer ring will be pressed down by the weight of the inner or outer ring, and the corresponding blocking block 24 will also be pressed down and will no longer block the lower end of the suction cup 4. The suction cup 4 that is fixed with an inner or outer ring will be connected to the transfer frame 15, thereby generating negative pressure to suck the inner or outer ring. By adopting the above method, the negative pressure generated by the suction cup 4 that is fixed with an inner or outer ring can be increased, making it more stable in fixing the inner or outer ring.

[0041] Furthermore, to ensure the effective collection of waste debris by the suction ports 5 located on either side of the inner or outer ring of the grinding process, a sealing ring 18 is provided. The sealing ring 18 is installed below the suction port 5 and inside the base 1. A sealing spring 19 is installed between the sealing ring 18 and the side wall of the transfer frame 15. The sealing ring 18 can be pressed against the upper side of the base 1 via the sealing spring 19. One end of the sealing spring 19 is fixedly connected to the sealing ring 18, and the other end is fixedly connected to the inner side wall of the transfer frame 15, thus sealing the area. Spring 19 has an elastic tendency to push the sealing ring 18 upward, allowing the sealing ring 18 to fit tightly against the upper side of the base 1 without external force, blocking the suction port 5. The sealing ring 18 is controlled to open by the adjacent connecting ring 16 when under load. When the suction cup 4 fixes the inner or outer ring, the limiting rod 7 located inside it will bear the load, and the corresponding connecting ring 16 will also bear the load. The load on the connecting ring 16 will cause the sealing rings 18 located on both sides to open, and the corresponding suction port 5 will no longer be blocked (e.g., Figure 3 As shown, the adsorption port 5 can collect waste debris, while the other adsorption ports 5 are blocked by the corresponding sealing rings 18, preventing the extraction of outside air. This allows the adsorption port 5 that collects waste debris to have a stronger suction (because under the same suction force, the fewer the number of air inlets, the greater the airflow at the air inlets), thus improving the waste debris collection effect.

[0042] A lower pressure plate 20 is fixedly connected to the connecting ring 16, and a support plate 21 is fixedly connected to the sealing ring 18. The upper side of the support plate 21 overlaps with the lower side of the lower pressure plate 20. When the connecting ring 16 moves downward under the load, the lower pressure plate 20 on the connecting ring 16 can press down the support plate 21 that overlaps with it, so that the pressed support plate 21 moves downward with the corresponding sealing ring 18, thereby opening the suction port 5 blocked by the corresponding sealing ring 18 to extract waste.

[0043] Because the upper side of the pallet 21 overlaps with the lower side of the lower pressure plate 20, when the pallet 21 is pressed down by the lower pressure plate 20 at one end, it will not affect the lower pressure plate 20 at the other end.

[0044] The polishing head 2 includes a base plate 201. A fixed polishing rod 202 and a sliding polishing rod 203 are respectively disposed on the base plate 201. The sliding polishing rod 203 is slidably mounted on the base plate 201 via a clamping spring 204. The upper end of the sliding polishing rod 203 is T-shaped, and a T-shaped groove adapted to the upper end of the sliding polishing rod 203 is formed on the base plate 201. One end of the clamping spring 204 is fixedly connected to the upper side of the sliding polishing rod 203, and the other end is fixedly connected to the groove wall of the T-shaped groove. The clamping spring 204 has the function of holding the sliding polishing rod 203 in place. The grinding rod 203 has an elastic tendency to push towards the fixed grinding rod 202, and the fixed grinding rod 202 and the sliding grinding rod 203 can be pressed against the side surface of the inner ring or outer ring by the clamping spring 204 to improve the grinding effect. When grinding, the fixed grinding rod 202 and the sliding grinding rod 203 need to be placed on both sides of the inner ring or outer ring respectively. At this time, under the action of the clamping spring 204, the fixed grinding rod 202 and the sliding grinding rod 203 will press against the side wall surface of the inner ring or outer ring, so that the grinding effect is better.

[0045] The collection frame 23 is inserted into the inside of the suction pipe 6. The suction pipe 6 has an opening that matches the collection frame 23. Below the opening of the suction pipe 6 and on the inner wall of the suction pipe 6, a support ring 22 is fixedly connected to support the collection frame 23. The opening of the collection frame 23 faces the direction of the airflow. The air flowing inside the suction pipe 6 enters the collection frame 23 through the opening. The bottom side wall of the collection frame 23 is a filter plate. The adsorbed waste particles will follow the drawn air through the adsorption port 5 and the transfer frame 15 into the inside of the suction pipe 6 and pass through the collection frame 23. When passing through the collection frame 23, the waste particles will be blocked by the filter plate, while the air will pass through the filter plate. The bottom side wall of the collection frame 23 is a convex arc surface. The arc surface can guide the blocked waste particles, allowing the collected waste particles to move to the periphery of the filter plate, preventing excessive accumulation of waste particles and affecting the filtration effect.

[0046] When using: 1. Place the inner or outer ring to be polished on the corresponding suction cup 4, and align the center of the inner or outer ring with the center of the spindle 301.

[0047] 2. Install the corresponding grinding head 2 at the end of the adjusting arm 302 according to the size and type of the inner or outer ring to be ground, and then install the adjusting arm 302 on the spindle 301, so that the grinding head 2 on it is directly above the inner or outer ring.

[0048] 3. By controlling the descent of the output rod of the electric push rod 11, the fixed grinding rod 202 and the sliding grinding rod 203 on the grinding head 2 are made to fit tightly against the inner ring or the outer ring;

[0049] 4. Start the external negative pressure vacuum pump so that the suction cup 4 can fix the inner or outer ring placed on it.

[0050] 5. Start the motor 9 to drive the spindle 301 to rotate. The spindle 301 drives the grinding head 2 to rotate through the adjusting arm 302, thereby achieving grinding of the inner or outer ring.

[0051] 6. The waste generated during grinding will be collected by the adsorption port 5 during the falling process. The waste will follow the airflow into the interior of the collection frame 23 and be blocked by the filter plate on the lower side wall of the collection frame 23.

[0052] 7. Periodically remove the collection box 23 and clean out the polishing debris inside.

[0053] 8. After grinding is complete, stop the motor 9 and raise the grinding head 2 through the electric push rod 11 so that it no longer contacts the inner or outer ring. Then turn off the external negative pressure vacuum pump and finally remove the ground inner or outer ring.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate and not limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the present invention without departing from the spirit and scope of the present invention. Any modifications or partial substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A grinding device for bearing surface treatment, comprising a base (1) and a grinding head (2) for grinding an inner or outer ring, characterized in that: The upper side of the base (1) is equipped with a mounting arm (3) for driving the grinding head (2), and the grinding head (2) is detachably mounted on the mounting arm (3). The upper side of the base (1) is also equipped with multiple suction cups (4) for fixing the inner or outer ring. The base (1) is provided with multiple suction ports (5) for collecting grinding waste, and the suction ports (5) and suction cups (4) are connected to the external negative pressure vacuum pump through the suction pipe (6). The suction pipe (6) is detachably equipped with a collection frame (23) for collecting waste. Multiple suction cups (4) and multiple suction ports (5) are arranged in multiple ring arrays on the base (1) with the center position of the base (1) as the center. The radius of the multiple rings is different. Each suction cup (4) has suction ports (5) distributed on both sides. The suction cup (4) and the suction port (5) are connected to the suction pipe (6) through the transfer frame (15) installed inside the base (1). The suction cup (4) is provided with a limiting rod (7) to prevent the suction cup (4) from tilting. The lower end of the limiting rod (7) is provided with a block (24) for sealing the suction cup (4). Multiple blocks (24) located on the same ring are connected to each other through a connecting ring (16). Multiple limiting rods (7) located on the same ring are connected to each other through a connecting ring (16). A buffer spring (17) is installed between the connecting ring (16) and the side wall of the transfer frame (15) to make the block (24) abut against the lower end of the suction cup (4). A sealing ring (18) is installed below the adsorption port (5) and inside the base (1). A sealing spring (19) is installed between the sealing ring (18) and the side wall of the transfer frame (15). The sealing ring (18) can be pressed against the upper side inside the base (1) by the sealing spring (19). The sealing ring (18) is controlled to open by the adjacent connecting ring (16) when bearing weight. A lower pressure plate (20) is fixedly connected to the connecting ring (16), and a support plate (21) is fixedly connected to the sealing ring (18). The upper side of the support plate (21) overlaps with the lower side of the lower pressure plate (20).

2. The grinding device for bearing surface treatment according to claim 1, characterized in that, The mounting arm (3) is adjustable in height and rotation radius to be suitable for grinding inner or outer rings of different sizes. The mounting arm (3) includes a main shaft (301) and an adjusting arm (302). The main shaft (301) extends into the interior of the base (1) and is connected to the motor shaft of the motor (9) through a prism (8). The main shaft (301) is connected to the output rod of the electric push rod (11) through a rotating frame (10) rotatably connected thereon. The adjusting arm (302) is inserted into the insertion hole at the upper end of the main shaft (301), and the upper end of the main shaft (301) is equipped with a clamping bolt (303) for limiting the sliding of the adjusting arm (302).

3. A grinding device for bearing surface treatment according to claim 2, characterized in that, The grinding head (2) is fixedly connected to a plate (12), and the end of the adjusting arm (302) has a slot (13) corresponding to the plate (12). The end of the adjusting arm (302) is also engaged with a locking bolt (14) for locking the plate (12).

4. A grinding device for bearing surface treatment according to claim 1, characterized in that, The polishing head (2) includes a base plate (201), on which a fixed polishing rod (202) and a sliding polishing rod (203) are respectively provided. The sliding polishing rod (203) is slidably mounted on the base plate (201) by a clamping spring (204), and the fixed polishing rod (202) and the sliding polishing rod (203) can be pressed against the side surface of the inner ring or the outer ring by the clamping spring (204) to improve the polishing effect.

5. A grinding device for bearing surface treatment according to claim 1, characterized in that, The collection frame (23) is inserted into the air suction pipe (6), and the opening end of the collection frame (23) faces the wind direction. The bottom side wall of the collection frame (23) is a filter plate, and the bottom side wall of the collection frame (23) is an upwardly convex arc surface.

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