A steel bowl mill groove device

Abstract

This invention provides a steel bowl grinding groove device, belonging to the field of bearing processing technology. The steel bowl grinding groove device includes a machine tool and a processing table located inside the machine tool. The processing table is equipped with a placement plate and further includes: a clamping mechanism, comprising jaws that, when open, clamp and fix the bearing race and drive it to rotate; and when closed, disassemble the bearing race; and a cleaning mechanism, comprising a fixing ring mounted on a movable plate. Before processing the bearing race, the device cleans the surface of the contact area between the jaws and the race to remove impurities and particles. This ensures that the jaws provide sufficient support to prevent race deformation while preventing unstable clamping due to impurities, which could lead to race deformation, uneven grinding, or scratches and indentations on the race surface. This extends the service life of the jaws and prevents accelerated surface wear.

Description

Technical Field

[0001] This invention belongs to the field of bearing processing technology, and specifically relates to a steel bowl grinding groove device. Background Technology

[0002] Grinding grooves in steel cup bearings is a process of machining high-precision grooves on bearing rings (steel cups) through grinding. Its core principle is to use the relative motion between a high-speed rotating grinding wheel and the workpiece to remove material and form a groove profile (such as arcs, angles, etc.) that meets the design requirements, so as to achieve the required dimensions, shape and surface quality.

[0003] Chinese Patent CN116900871B discloses a bearing groove grinding device, including a platform. A driving component is mounted on the upper surface of the platform near one edge, and a fixed seat is mounted on the upper surface of the platform near the other edge. Two support shafts are symmetrically and rotatably mounted through the side of the fixed seat. A bearing shaft is fixedly mounted on the upper surface of the fixed seat, located directly to the side of the driving component. A pusher is rotatably mounted on one end of the bearing shaft, and a reciprocating pusher is mounted on the other end. The end of the reciprocating pusher is rotatably connected to the upper end of the pusher. A grinding component is mounted in the middle of the side of the pusher. This invention shortens grinding time, improves grinding efficiency, and also improves grinding quality.

[0004] However, the above technical solution still has the following problems. When clamping and fixing the bearing ring, the clamping part needs to increase the contact area with the bearing ring to reduce the deformation when the ring is fixed. However, if the contact position between the clamping part and the ring is not thoroughly cleaned in the early stage, impurities may remain, which may scratch the positioning end face of the workpiece or cause the positioning surface of the fixture to wear more. At the same time, impurities will reduce the actual contact area between the workpiece and the fixture, causing the workpiece to shift during processing. Summary of the Invention

[0005] The purpose of this invention is to provide a steel cup grinding groove device, which aims to solve the problem in the prior art where residual impurity particles at the contact position between the clamping part and the bearing ring affect the processing quality of the bearing ring.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a steel bowl grinding channel device, comprising: a machine tool and a processing table located inside the machine tool, wherein a placement plate is provided on the processing table, and further comprising:

[0007] The clamping mechanism is slidably mounted on the processing table. The clamping mechanism includes jaws. When the jaws are open, they are used to clamp and fix the ferrule and can drive the ferrule to rotate. When the jaws are closed, the ferrule can be disassembled.

[0008] A cleaning mechanism is installed on a clamping mechanism. The cleaning mechanism includes a fixed ring mounted on a movable plate. A cleaning ring is rotatably connected to the inner side of the fixed ring. Multiple extension plates are provided on the cleaning ring. Air outlets and brushes are provided on the extension plates. When the jaws are closed, the jaws are located on the side of the extension plates closer to the axis and are in contact with the brushes. The air outlets can blow air towards the jaws. A clutch mechanism is provided on the cleaning ring. When the jaws rotate, the clutch mechanism causes the jaws to rotate relative to the extension plates.

[0009] The placement plate is equipped with an arc-shaped support block for pre-fixing the collar. The inner wall of the collar is in contact with the brush, and the air outlet can blow air towards the inner wall of the collar. When the claws are extended and there is a gap between them and the collar, the clutch mechanism can make the cleaning ring rotate with the claws and make the extension plate rotate relative to the collar.

[0010] A further technical solution of the present invention is that a grinding mechanism is slidably mounted on the processing table. The grinding mechanism includes a grinding frame slidably mounted on the processing table, a support frame rotatably mounted on the grinding frame, a guide groove is provided on the side of the support frame near the placement plate along the moving direction of the grinding frame, the side of the guide groove near the placement plate is inclined towards the rotation center of the support frame, and a guide post is provided at the end of the chuck near the guide groove that can slide along the guide groove.

[0011] A further technical solution of the present invention is that a spray ring is provided on the outside of the support frame and mounted on the grinding frame, and a spray head is provided on the side of the spray ring near the placement plate.

[0012] A further technical solution of the present invention is that the machine tool is provided with a second driving device for driving the grinding frame to slide, a grinding wheel is installed on the side of the grinding frame near the placement plate, and a second motor is installed on the grinding frame to drive the grinding wheel to rotate on a fixed axis.

[0013] A further technical solution of the present invention is that the clamping mechanism further includes a movable plate slidably mounted on the processing table, a hydraulic chuck rotatably mounted on the movable plate, jaws slidably mounted on the hydraulic chuck, a first driving device for driving the movable plate to slide inside the machine tool, a first motor for driving the hydraulic chuck to rotate on a fixed axis mounted on the movable plate, and the side of the jaws that are far apart from each other being set as an arc surface.

[0014] A further technical solution of the present invention is that the fixed ring is provided with an air inlet, and the fixed ring and the cleaning ring are provided with a communicating cavity, and the communicating cavity is connected to the air inlet and the air outlet. The air outlet on one of the extension plates is located on the side away from the axis of the cleaning ring, and the brush is located on the side close to the axis of the cleaning ring. The positions of the air outlet and the brush on two adjacent extension plates are swapped.

[0015] A further technical solution of the present invention is that the clutch mechanism includes a first limiting groove and a first limiting block. The first limiting groove is disposed inside the cleaning ring and between two adjacent extension plates. The first limiting block cooperates with the first limiting groove and is disposed on the arc-shaped surface of the claw. A slide rod is installed through the fixed ring. The slide rod can slide back and forth along the axial direction of the fixed ring. A spring is connected to the side of the slide rod near the placement plate. The other end of the spring is connected to the fixed ring. A second limiting block is disposed on the side of the slide rod away from the spring. A second limiting groove that cooperates with the second limiting block is disposed on the cleaning ring.

[0016] A further technical solution of the present invention is that the arc-shaped support block is magnetic, and a through hole for penetrating the placement plate is provided above the arc-shaped support block.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. By using the brush and air outlet on the extension plate, impurities and particles on the surface of the contact area between the jaws and the bearing rings are cleaned before processing the bearing rings. This ensures that the jaws can provide sufficient support to prevent the rings from deforming, while also preventing unstable clamping due to impurities, which could lead to ring deformation, uneven grinding, or scratches and indentations on the ring surface. At the same time, it can extend the service life of the jaws and prevent accelerated surface wear.

[0019] 2. The support frame provides auxiliary support for the grippers to prevent vibration during processing of the ring, accuracy errors caused by inaccurate positioning of the gripper axis, and processing instability caused by wear and tear of the grippers or fatigue leading to decreased rigidity after long-term use of the fixture. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of the overall structure of a specific embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of a specific embodiment of the present invention;

[0023] Figure 3 This is an isometric sectional view of a specific embodiment of the present invention;

[0024] Figure 4 for Figure 3 Enlarged structural diagram at point A;

[0025] Figure 5 This is a schematic diagram of the clamping mechanism in a specific embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of the jaws and cleaning ring in a specific embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the mounting structure of the jaws and cleaning ring in a specific embodiment of the present invention;

[0028] Figure 8 This is a schematic diagram of the cleaning mechanism in a specific embodiment of the present invention;

[0029] Figure 9 This is a schematic diagram of the cooperative structure of the clamping mechanism and the cleaning mechanism in a specific embodiment of the present invention;

[0030] Figure 10 This is a schematic diagram of the structure of the jaws and the grinding frame in a specific embodiment of the present invention.

[0031] In the diagram: 1. Machine tool; 2. Machining table; 21. Placement plate; 22. Arc-shaped support block; 23. Through hole; 3. Clamping mechanism; 31. Moving plate; 32. Hydraulic chuck; 33. First motor; 34. Claw; 341. First limiting block; 342. Guide column; 4. Cleaning mechanism; 41. Fixing ring; 411. Air inlet; 42. Cleaning ring; 421. Extension plate; 422. Air outlet; 423. Brush; 424. Second limiting groove; 43. First limiting groove; 44. Slide rod; 441. Spring; 442. Second limiting block; 5. Grinding mechanism; 51. Grinding frame; 52. Grinding wheel; 53. Second motor; 54. Support frame; 541. Guide groove; 55. Spray ring; 551. Spray head. Detailed Implementation

[0032] 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.

[0033] Please see Figures 1-10 The present invention provides the following technical solution: a steel bowl grinding channel device, comprising a machine tool 1, a processing table 2, a clamping mechanism 3, a cleaning mechanism 4 and a grinding mechanism 5;

[0034] Machine tool 1 is placed horizontally on the ground. Processing table 2 is set inside machine tool 1. Clamping mechanism 3 is installed on the upper surface of processing table 2 and can move back and forth along processing table 2. Clamping mechanism 3 can fix the collar. Cleaning mechanism 4 is installed on clamping mechanism 3 and can clean the contact position between clamping mechanism 3 and collar. Grinding mechanism 5 is installed on processing table 2 and can move back and forth along processing table 2. When clamping mechanism 3 and grinding mechanism 5 slide along processing table 2, they can move closer or further away from each other. During operation, firstly, cleaning mechanism 4 cleans clamping mechanism 3 and collar to remove adhering impurities and particles. Then, clamping mechanism 3 fixes collar. Then, grinding mechanism 5 approaches collar and grinds its grooves.

[0035] Please see Figures 2-4 The upper surface of the processing table 2 is provided with a placement plate 21. An arc-shaped support block 22 is provided on the side of the placement plate 21 near the grinding mechanism 5. The arc-shaped support block 22 cooperates with and supports the ring. The arc-shaped support block 22 is magnetic and can prevent the ring placed on it from falling off. A through hole 23 is provided above the arc-shaped support block 22, which passes through the placement plate 21. The axis of the through hole 23 coincides with the axis of the ring placed on the arc-shaped support block 22. The clamping mechanism 3 is installed on the side of the placement plate 21 away from the ring. The upper surface of the processing table 2 is provided with a guide rail so that the clamping mechanism 3 can clamp the ring along the processing table 2 near the placement plate 21 and through the through hole 23.

[0036] Please see Figures 2-5 The clamping mechanism 3 includes a movable plate 31, which is mounted on the processing table 2 and can slide along the guide rail on the processing table 2 to approach or move away from the placement plate 21. The machine tool 1 is provided with a first driving device (not shown in the figure) that drives the movable plate 31 to slide. A hydraulic chuck 32 is mounted on the side of the movable plate 31 that is close to the placement plate 21. A first motor 33 is mounted on the movable plate 31. The output end of the first motor 33 is connected to the hydraulic chuck 32. The first motor 33 drives the hydraulic chuck 32 to rotate along the movable plate 31 on a fixed axis. The rotation axis of the hydraulic chuck 32 coincides with the axis of the through hole 23. Multiple sets of jaws 34 are slidably mounted on the hydraulic chuck 32. In this embodiment, four sets of jaws 34 are provided. The hydraulic chuck 32 can drive the jaws 34 to approach or move away from each other on the hydraulic chuck 32. The side of the jaws 34 that moves away from each other is set as an arc surface so that it can completely fit with the inner ring of the collar when clamping.

[0037] After the collar is placed on the arc-shaped support block 22, the first driving device drives the moving plate 31 to move and approach the placement plate 21. At this time, the chuck 34 moves to the inside of the collar through the through hole 23. The hydraulic chuck 32 drives the chuck 34 to move away from each other and approach the inner ring of the collar to clamp and fix it, or to move closer to each other and move in the direction of the axis of the through hole 23.

[0038] Please see Figure 4 , Figures 6-9 The cleaning mechanism 4 includes a fixed ring 41 mounted on a movable plate 31 via a connecting rod. A cleaning ring 42 is rotatably connected to the inner side of the fixed ring 41. Both the fixed ring 41 and the cleaning ring 42 have annular cavities inside. The openings of the two cavities can cooperate to form a communicating cavity, and the cooperating points can rotate relative to each other. When the cleaning ring 42 rotates along the fixed axis of the fixed ring 41, it can ensure that the communicating cavity is sealed. An air inlet 411 is provided on the fixed ring 41, through which gas can enter the communicating cavity. Multiple sets of extension plates are provided on the cleaning ring 42. 421. In this embodiment, four extension plates 421 are evenly arranged. Air outlets 422 and brushes 423 are arranged on both sides of the extension plates 421. The air outlets 422 are connected to the communicating cavity. The gas introduced into the communicating cavity through the air inlet 411 can be blown out from the air outlets 422. The air outlet 422 on one of the extension plates 421 is located on the side away from the axis of the cleaning ring 42, and the brushes 423 are located on the side close to the axis of the cleaning ring 42. The positions of the air outlets 422 and brushes 423 on two adjacent extension plates 421 are interchanged. When the moving plate 31 approaches the placement plate 21, the extension plate 421 can move to the inside of the collar, and the brushes 423 on two of the extension plates 421 contact the inner ring of the collar, while the air outlets 422 on the other two extension plates 421 blow air toward the inner ring of the collar; when the claws 34 approach each other to the closest position, the brushes 423 on two of the extension plates 421 contact the arc-shaped surface on the claws 34, while the air outlets 422 on the other two extension plates 421 blow air toward the arc-shaped surface on the claws 34.

[0039] The clutch mechanism includes a first limiting groove 43, which is disposed inside the cleaning ring 42. Multiple first limiting grooves 43 are provided, and each first limiting groove 43 is positioned between two adjacent extension plates 421. A first limiting block 341, which mates with the first limiting groove 43, is provided on the arc-shaped surface of the claw 34. When the claws 34 move away from each other, the first limiting block 341 slides into the first limiting groove 43. When the claws 34 move closer together, the first limiting block 341 slides out of the first limiting groove 43 until it is completely disengaged. A sliding rod 44 is installed through the fixed ring 41. The sliding rod 44 can slide back and forth along the axis of the fixed ring 41. A spring 441 is connected to the side of the sliding rod 44 near the placement plate 21. The other end of the spring 441 is connected to the fixed ring 41. A second limiting block 442 is provided on the side of the sliding rod 44 away from the spring 441. A second limiting groove 424 is provided on the cleaning ring 42 to cooperate with the second limiting block 442. In the initial state, the spring 441 causes the second limiting block 442 to be inserted into the second limiting groove 424 and limit the cleaning ring 42. When the moving plate 31 moves towards the placement plate 21, the sliding rod 44 approaches the placement plate 21 and squeezes the spring 441 after contacting the placement plate 21. The fixed ring 41 continues to approach the placement plate 21, causing the second limiting block 442 to slide along the inside of the second limiting groove 424 until it is completely disengaged.

[0040] During operation, the hydraulic chuck 32 first drives the jaws 34 to approach each other to their closest position. The first motor 33 then drives the hydraulic chuck 32 to rotate on a fixed axis. At this time, the brush 423 on the extension plate 421 contacts the arc-shaped surface of the jaws 34 and cleans it. Simultaneously, air is continuously blown from the air outlet 422 to remove impurities from the arc-shaped surface of the jaws 34. Subsequently, the first drive device drives the moving plate 31 to move closer to the placement plate 21. When the jaws 34 move to the inside of the collar, the sliding rod 44 contacts the placement plate 21, causing the second limiting block 4... 42 slides along the inside of the second limiting groove 424 until it is completely disengaged. At this time, the hydraulic chuck 32 drives the jaws 34 to move away from each other by a certain distance, so that the first limiting block 341 slides into the first limiting groove 43. Then, the hydraulic chuck 32 rotates and drives the cleaning ring 42 to rotate synchronously through the first limiting block 341. At this time, the brush 423 on the extension plate 421 contacts the inner ring of the collar and cleans its surface. At the same time, air is continuously blown from the air outlet 422 to remove impurities and particles on the inner ring of the collar. The collar is adsorbed by the arc-shaped support block 22 to prevent the collar from moving during cleaning and air blowing. After cleaning, the jaws 34 continue to move away until the arc surface contacts the inner ring of the collar and clamps it in place. Then, the moving plate 31 continues to move a certain distance to make the collar disengage from the arc-shaped support block 22, so as to avoid the arc-shaped support block 22 interfering with the polishing of the collar.

[0041] Please see Figure 2 , Figure 3 and Figure 10The grinding mechanism 5 includes a grinding frame 51, which slides along the guide rail on the processing table 2 toward or away from the placement plate 21. The machine tool 1 is equipped with a second driving device (not shown in the figure) that drives the grinding frame 51 to slide. A grinding wheel 52 is installed on the side of the grinding frame 51 near the placement plate 21. The grinding wheel 52 is moved to the side of the ring and the groove of its outer ring is ground. A second motor 53 is installed on the grinding frame 51. The output end of the second motor 53 is connected to the grinding wheel 52. The second motor 53 drives the grinding wheel 52 to rotate on a fixed axis and process the ring. A support frame 54 is rotatably mounted on the grinding frame 51. The rotation axis of the support frame 54 is coaxial with the hydraulic chuck 32. A guide groove 541 is provided on the side of the support frame 54 near the placement plate 21 along the moving direction of the grinding frame 51. The side of the guide groove 541 near the placement plate 21 is inclined towards the rotation center of the support frame 54. A guide post 342 that can slide along the guide groove 541 is provided at the end of the chuck 34 near the guide groove 541.

[0042] After the jaws 34 clamp the ferrule, the grinding frame 51 is brought close to the placement plate 21. At this time, the side of the guide groove 541 away from the placement plate 21 can just contact the guide post 342, providing auxiliary support to the guide post 342. This achieves simultaneous fixation of both sides of the ferrule, preventing the ferrule from shaking during rotational processing. It also avoids the problem of unstable clamping of the ferrule due to severe wear of one jaw 34 after long-term use. After each rotation of the hydraulic chuck 32, the jaws 34 stop at the same fixed position, ensuring that the relative positions of the components of the device remain unchanged after stopping. This prevents the relative positions of certain structures from changing and causing incompatibility during the next operation.

[0043] A spray ring 55 is mounted on the grinding frame 51 on the outer side of the support frame 54, and a spray head 551 is provided on the side of the spray ring 55 near the placement plate 21. When the grinding frame 51 is close to the placement plate 21 for processing, the spray ring 55 works synchronously and sprays coolant from the spray head 551 to cool the part of the ring being ground, avoiding excessive temperature at the grinding location due to spraying only at the grinding location. In addition, the spray head 551 can wash and remove impurities adhering to the grinding location and the brush 423, preventing excessive impurities from affecting the grinding accuracy and subsequent cleaning of the brush 423.

Claims

1. A steel bowl mill groove device, comprising: A machine tool (1) and a machining table (2) located inside the machine tool (1), wherein a placement plate (21) is provided on the machining table (2), characterized in that it further includes: The clamping mechanism (3) is slidably mounted on the processing table (2). The clamping mechanism (3) includes a jaw (34). When the jaw (34) is open, it is used to clamp and fix the ring and can drive the ring to rotate. When the jaw (34) is closed, it can disassemble the ring. The cleaning mechanism (4) is installed on the clamping mechanism (3). The cleaning mechanism (4) includes a fixed ring (41) installed on the moving plate (31). The cleaning ring (42) is rotatably connected to the inner side of the fixed ring (41). The cleaning ring (42) is provided with multiple sets of extension plates (421). The extension plates (421) are provided with air outlets (422) and brushes (423). When the pawl (34) is closed, the pawl (34) is located on the side of the extension plate (421) close to the axis and contacts the brush (423). The air outlet (422) can blow air towards the pawl (34). The cleaning ring (42) is provided with a clutch mechanism. When the pawl (34) rotates, the pawl (34) and the extension plate (421) rotate relative to each other through the clutch mechanism. An arc-shaped support block (22) is provided on the placement plate (21) for pre-fixing the collar. The inner wall of the collar is in contact with the brush (423), and the air outlet (422) can blow air towards the inner wall of the collar. When the claw (34) unfolds and leaves a gap between it and the collar, the cleaning ring (42) can be rotated with the claw (34) through the clutch mechanism, and the extension plate (421) can rotate relative to the collar. A grinding mechanism (5) is slidably mounted on the processing table (2). The grinding mechanism (5) includes a grinding frame (51) slidably mounted on the processing table (2). A support frame (54) is rotatably mounted on the grinding frame (51). A guide groove (541) is provided on the side of the support frame (54) near the placement plate (21) along the moving direction of the grinding frame (51). The side of the guide groove (541) near the placement plate (21) is inclined towards the rotation center of the support frame (54). A guide post (342) that can slide along the guide groove (541) is provided at the end of the pawl (34) near the guide groove (541).

2. The steel bowl mill channel device according to claim 1, characterized in that: The support frame (54) is provided with a spray ring (55) installed on the grinding frame (51) on the outside, and a spray head (551) is provided on the side of the spray ring (55) near the placement plate (21).

3. The steel bowl mill channel device according to claim 2, characterized in that: The machine tool (1) is equipped with a second driving device that drives the grinding frame (51) to slide. A grinding wheel (52) is installed on the side of the grinding frame (51) near the placement plate (21). A second motor (53) that drives the grinding wheel (52) to rotate on a fixed axis is installed on the grinding frame (51).

4. The steel bowl mill channel device according to claim 1, characterized in that: The clamping mechanism (3) further includes a movable plate (31) that is slidably mounted on the processing table (2). A hydraulic chuck (32) is rotatably mounted on the movable plate (31). The jaws (34) are slidably mounted on the hydraulic chuck (32). A first driving device for driving the movable plate (31) to slide is provided in the machine tool (1). A first motor (33) for driving the hydraulic chuck (32) to rotate on a fixed axis is installed on the movable plate (31). The sides of the jaws (34) that are far apart from each other are set as arc surfaces.

5. The steel bowl mill channel device according to claim 4, characterized in that: The fixed ring (41) is provided with an air inlet (411). The fixed ring (41) and the cleaning ring (42) are provided with a communicating cavity. The communicating cavity is connected to the air inlet (411) and the air outlet (422). The air outlet (422) on one of the extension plates (421) is located on the side away from the axis of the cleaning ring (42), and the brush (423) is located on the side close to the axis of the cleaning ring (42). The positions of the air outlet (422) and the brush (423) on two adjacent extension plates (421) are reversed.

6. The steel bowl mill channel device according to claim 1, characterized in that: The clutch mechanism includes a first limiting groove (43) and a first limiting block (341). The first limiting groove (43) is located inside the cleaning ring (42) and between two adjacent extension plates (421). The first limiting block (341) cooperates with the first limiting groove (43) and is located on the arc surface of the claw (34). A sliding rod (44) is installed through the fixed ring (41). The sliding rod (44) can slide back and forth along the axial direction of the fixed ring (41). A spring (441) is connected to the side of the sliding rod (44) near the placement plate (21). The other end of the spring (441) is connected to the fixed ring (41). A second limiting block (442) is provided on the side of the sliding rod (44) away from the spring (441). A second limiting groove (424) is provided on the cleaning ring (42) to cooperate with the second limiting block (442).

7. The steel bowl mill channel device according to claim 1, characterized in that: The arc-shaped support block (22) is magnetic, and a through hole (23) through the placement plate (21) is provided above the arc-shaped support block (22).

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