Pressure device for machining inner ring and outer ring of bearing

Abstract

The utility model relates to the technical field of bearing machining, in particular to a bearing machining inner and outer ring pressurizing device which comprises a pressurizing machine body, a rack is arranged at the top of the pressurizing machine body, an air cylinder is installed on a top plate of the rack, and a fixing base used for containing a bearing is arranged at the top of the pressurizing machine body. A pushing plate driven by an air cylinder to ascend and descend is arranged in the machine frame, a pressurizing base is installed at the bottom of the pushing plate, a pressurizing groove is formed in the bottom of the pressurizing base, an arc-shaped empty groove is formed in the pressurizing base, and a plurality of studs are connected to the bottom side of the arc-shaped empty groove in a surrounding rotating and penetrating mode. A pressurizing head is fixed to the end, located in the pressurizing groove of the pressurizing base, of the stud. The bearing machining inner and outer ring pressurizing device can automatically adjust the contact area and pressure distribution according to the actual sizes and materials of the inner and outer rings, effectively reduces the risk of machining deformation, improves the overall quality of a bearing and prolongs the service life of the bearing.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing processing, in particular to a bearing processing inner and outer ring pressurizing device. Background Art

[0002] In the assembly process of bearings, proper preload of inner and outer rings is a key step, the purpose of which is to ensure the stability of the bearings during operation and improve the rotation accuracy, while extending the service life. Preload can reduce the small movement of the rolling elements inside the bearings caused by clearance, thereby improving the rotation accuracy of the bearings, which is particularly important for precision machinery and high-speed equipment.

[0003] In the prior art, the preload of the inner and outer rings of the bearing can be pressurized by a pneumatic pressure head. However, since this pressurization method is difficult to accurately control the uniform distribution of the preload force, it leads to local stress concentration. Stress concentration not only easily causes irreversible plastic deformation of the inner and outer rings of the bearing, affects the geometric accuracy, and weakens the fatigue strength and durability of the bearing, but also easily leads to increased vibration and noise during the operation of the bearing after assembly, affecting the overall performance of the mechanical equipment. Utility Model Content

[0004] The purpose of the utility model is to provide a bearing inner and outer ring pressurizing device to solve the problem of uneven distribution of preload force when the inner and outer rings of the bearing are preloaded by a pneumatic pressure head, which causes local stress concentration, resulting in bearing deformation, reduced accuracy, weakened fatigue strength and shortened service life, thereby affecting the operating stability of the mechanical equipment.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bearing inner and outer ring processing pressurizing device, comprising a pressurizing body, a frame is provided on the top of the pressurizing body, a cylinder is installed on the top plate of the frame, a fixed seat for placing the bearing is provided on the top of the pressurizing body, a push plate driven to rise and fall by the cylinder is provided inside the frame, a pressurizing seat is installed at the bottom of the push plate, a pressurizing groove is provided at the bottom of the pressurizing seat, and an arc-shaped empty groove is provided inside the pressurizing seat, a plurality of studs are connected and rotated around the bottom side of the arc-shaped empty groove, and a pressurizing head is fixed at one end of the stud located inside the pressurizing groove of the pressurizing seat.

[0006] Preferably, one end of the pressure head connected to the stud is provided with a threaded interface, and the outer wall of the pressure head is a micro-convex dot structure.

[0007] Preferably, positioning rods are provided on both sides of the top end of the pressurizing seat, and through holes matching the positioning rods are provided on both sides of the pushing plate, and positioning sleeves are provided on the tops of the through holes of the pushing plate.

[0008] Preferably, a fitting block is further provided on the top of the pressurizing seat, and a fitting groove matching the fitting block structure is provided on the bottom of the pushing plate.

[0009] Preferably, a solid block is provided on both sides of the push plate, a horizontal axis is inserted into the interior of the solid block, and a clamping block is fixed to one end corresponding to the horizontal axis.

[0010] Preferably, the outer wall of the clamping block is an arc-shaped surface structure, and a rubber pad is bonded and fixed on the arc-shaped surface of the clamping block.

[0011] Compared with the prior art, the beneficial effect of the utility model is that the bearing inner and outer ring pressure device can automatically adjust the contact area and pressure distribution according to the actual size and material of the inner and outer rings, effectively reducing the risk of processing deformation, thereby improving the overall quality and service life of the bearing. The device evenly arranges a number of small pressure heads in the pressure groove of the pressure seat, and the pressure heads can be adjusted to different positions through studs. When the cylinder drives on the top plate of the frame to drive the push plate to drive the pressure seat to press down, the pressure seat can press the bearing point-to-point through a number of pressure heads to avoid stress concentration. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural schematic diagram of a bearing inner and outer ring pressurizing device for machining the utility model;

[0013] Figure 2 This is a schematic diagram of the connection structure between a pressure seat and a push plate of a pressure device for processing inner and outer rings of a bearing according to the utility model;

[0014] Figure 3 The utility model is a schematic diagram of the top view of the push plate of the bearing inner and outer ring pressure device.

[0015] In the figure: 1. pressurizing body; 2. fixing seat; 3. frame; 4. pressurizing seat; 5. pushing plate; 6. cylinder; 7. arc-shaped slot; 8. stud; 9. pressurizing head; 10. fixing block; 11. horizontal axis; 12. clamping block; 13. positioning rod; 14. positioning sleeve; 15. fitting block. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-3The utility model provides a technical solution: a bearing inner and outer ring pressurizing device, comprising a pressurizing body 1, a frame 3 is welded and fixed on the top of the pressurizing body 1, a cylinder 6 is fixedly installed in the middle of the top plate of the frame 3 by bolts, a fixed seat 2 for placing the bearing is provided on the top of the pressurizing body 1, a placement groove with an arc-shaped inner wall is provided inside the fixed seat 2, a push plate 5 distributed laterally is provided inside the frame 3, and a limited axis is symmetrically welded and fixed on both sides of the top of the push plate 5, and the limited axis and the top plate of the frame 3 also form a sliding connection, the output end of the cylinder 6 passes through the bottom of the top plate of the pressurizing body 1 and is fixedly connected to the top of the push plate 5, and a pressurizing seat 4 is detachably installed on the bottom of the push plate 5, and a pressurizing groove is provided at the bottom of the pressurizing seat 4, and the pressurizing An arc-shaped slot 7 is provided inside the pressure seat 4, and a plurality of studs 8 are evenly rotated and interspersed and connected to the bottom side of the arc-shaped slot 7 through threaded holes. A pressure head 9 is fixed at one end of the stud 8 located inside the pressure slot of the pressure seat 4. The pressure body 1 of this structure can adjust a plurality of pressure heads 9 to different positions in the pressure slot of the pressure seat 4 by placing the bearing to be pre-tightened inside the fixed seat 2 and rotating the stud 8 inside the arc-shaped slot 7. When the cylinder 6 is driven on the top plate of the frame 3, it will drive the push plate 5 to rise and fall vertically to press the pressure seat 4 downward. When the pressure seat 4 is pressed downward, it can drive the pressure heads 9 adjusted to different positions to pressurize the bearing, so that a single large pressure head can be replaced by a plurality of small pressure heads 9. These pressure heads 9 can be adjusted according to the inner and outer rings of the bearing. The specific contour and size distribution arrangement of each are independently adjusted to achieve point-to-point precise control of the preload force, effectively disperse the pressure, avoid stress concentration, improve processing consistency, and thus improve the overall quality and service life of the bearing. A threaded interface is provided at one end where the pressure head 9 is connected to the stud 8, and the outer wall of the pressure head 9 is a micro-convex point structure. The pressure head 9 of this structure can be quickly assembled on the outer end of the stud 8 through the threaded interface, which is more convenient to use. The micro-convex point structure design of the outer wall of the pressure head 9 can allow the pressure head to conform to the slight unevenness of the workpiece surface while maintaining a certain pressure, reduce local excessive contact pressure, and thus further reduce deformation. Positioning rods 13 are welded and fixed on both sides of the top of the pressure seat 4, and both sides of the push plate 5 are A through hole is provided to match the positioning rod 13, and a positioning sleeve 14 is provided on the top of the through hole of the push plate 5. A locking bolt is inserted and connected to the front end of the positioning sleeve 14 through a threaded structure. A locking hole is provided on the positioning rod 13 to match the locking bolt structure on the positioning sleeve 14. The push plate 5 of this structure can be assembled firmly at the bottom of the push plate 5 by extending the positioning rod 13 into the through hole on the push plate 5 and passing through the positioning sleeve 14, and then the locking bolt at the front end of the positioning sleeve 14 is turned into the locking hole on the positioning rod 13, so as to maintain the horizontality of the pressure seat 4 and improve the accuracy of pressurizing the bearing. A fitting block 15 is also welded and fixed on the top of the pressure seat 4, and a fitting groove matching the structure of the fitting block 15 is provided at the bottom of the push plate 5.The pressurizing seat 4 of this structure can simultaneously embed the engaging block 15 into the engaging groove at the bottom of the pushing plate 5 during assembly, further ensuring the stability of the installation at the bottom of the pushing plate 5. The two sides of the pushing plate 5 are welded and fixed with a solid block 10, and a transverse axis 11 is inserted inside the solid block 10. The connection between the solid block 10 and the transverse axis 11 can be fixed by screws, and a clamping block 12 is welded and fixed at the corresponding end of the transverse axis 11. The outer wall of the clamping block 12 is an arc surface structure, and a rubber pad is bonded and fixed on the arc surface of the clamping block 12. The transverse axis 11 of this structure can slide inside the solid block 10 to displace the clamping block 12 laterally. When the clamping blocks 12 are closed together, they can clamp and fix the two sides of the bearing inside the fixed seat 2 to ensure the stability of the bearing when it is under pressure.

[0018] Working principle: When using the bearing inner and outer ring pressure device to process, first place the bearing to be preloaded inside the fixed seat 2, and then push the horizontal axis 11 respectively. When the horizontal axis 11 slides inside the solid block 10, it will adjust the lateral position of the clamping block 12 until the clamping blocks 12 close together and clamp the two sides of the bearing with their inner walls. Use screws to limit and fix the connection between the solid block 10 and the horizontal axis 11, and then place the pressure seat 4 at the bottom of the push plate 5, and make the positioning rod 13 extend into the through hole on the push plate 5 and penetrate the positioning sleeve 14 until the engaging block 15 is embedded in the engaging groove at the bottom of the push plate 5, and then The locking bolt at the front end of the positioning sleeve 14 is turned into the locking hole on the positioning rod 13 to firmly install the pressure seat 4 on the bottom of the push plate 5. At this time, the operator can adjust the separate pressure position of each pressure head 9 according to the actual size and material of the inner and outer rings. When the pressure head 9 is adjusted, the stud 8 is rotated inside the arc-shaped slot 7, and finally the cylinder 6 is started. When the cylinder 6 is driven on the top plate of the frame 3, it will drive the push plate 5 and the pressure seat 4 to descend vertically. When the pressure seat 4 is pressed down, the bearing can be pressurized by the pressure heads 9 at different positions, so as to realize point-to-point precise control of the preload force, thereby completing a series of tasks.

[0019] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A bearing inner and outer ring pressurizing device, comprising a pressurizing body (1), a frame (3) is provided on the top of the pressurizing body (1), a cylinder (6) is installed on the top plate of the frame (3), and the characteristics are: The top of the pressurizing body (1) is provided with a fixed seat (2) for placing a bearing, the interior of the frame (3) is provided with a push plate (5) driven to rise and fall by a cylinder (6), the bottom of the push plate (5) is installed with a pressurizing seat (4), the bottom of the pressurizing seat (4) is provided with a pressurizing groove, and the interior of the pressurizing seat (4) is provided with an arc-shaped empty groove (7), the bottom side of the arc-shaped empty groove (7) is connected with a plurality of studs (8) that are rotatably interlaced, and the studs (8) are located in the pressurizing groove of the pressurizing seat (4) and one end thereof is fixed with a pressurizing head (9).

2. A bearing inner and outer ring pressurizing device according to claim 1, characterized in that: One end of the pressure head (9) connected to the stud (8) is provided with a threaded interface, and the outer wall of the pressure head (9) is a micro-convex point structure.

3. A bearing inner and outer ring pressurizing device according to claim 1, characterized in that: Positioning rods (13) are provided on both sides of the top of the pressure seat (4), and through holes matching the positioning rods (13) are provided on both sides of the push plate (5), and a positioning sleeve (14) is provided on the top of the through hole of the push plate (5).

4. A bearing inner and outer ring pressurizing device according to claim 1, characterized in that: The top of the pressure seat (4) is also provided with an engaging block (15), and the bottom of the push plate (5) is provided with an engaging groove that matches the structure of the engaging block (15).

5. The bearing inner and outer ring pressurizing device according to claim 1, characterized in that: A solid block (10) is provided on both sides of the push plate (5), a transverse axis (11) is inserted into the interior of the solid block (10), and a clamping block (12) is fixed to the corresponding end of the transverse axis (11).

6. A bearing inner and outer ring pressurizing device according to claim 5, characterized in that: The outer wall of the clamping block (12) is an arc-shaped surface structure, and a rubber pad is bonded and fixed on the arc-shaped surface of the clamping block (12).

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