Novel bearing press fitting tool
By introducing slide rails and pneumatic slide table positioning mechanisms into the bearing press-fit fixture, precise coaxiality adjustment of rotors with different diameters is achieved, solving the problem of insufficient adaptability of traditional fixtures and improving press-fit efficiency and accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-12
- Publication Date
- 2026-04-03
AI Technical Summary
Traditional bearing press-fitting fixtures cannot adapt to rotors of different diameters, resulting in uneven press-fitting force distribution and damage to mating surfaces, and thus cannot meet the bearing press-fitting requirements of rotors with various diameters.
A novel bearing press-fitting fixture was designed, which uses a slide rail and a pneumatic slide table in conjunction with a positioning mechanism. The rotor axis position is adjusted by the pneumatic slide table and a lead screw motor, and the feeding mechanism is combined to achieve precise positioning and bearing press-fitting of rotors of different diameters.
It enables coaxiality adjustment of rotors with different diameters, improves tooling utilization, and ensures the accuracy and stability of bearing press-fitting.
Smart Images

Figure CN224073761U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of bearing press-fitting technology, and specifically relates to a novel bearing press-fitting tool. Background Technology
[0002] Bearing press fitting machines are currently widely used motor bearing installation mechanisms. Bearing press fitting relies on the interference fit between the shaft and the inner ring of the bearing (or the seat hole and the outer ring). Mechanical force is used to cause elastic / plastic deformation of the mating surfaces, forming a gapless fast connection.
[0003] When press-fitting bearings to motor stators and rotors, it is essential to ensure the coaxiality of the bearing and rotor axes to prevent uneven pressure distribution or damage to the mating surfaces caused by misalignment. However, traditional bearing press-fitting fixtures typically have fixed clamping positions for the stator and rotor. When clamping stators and rotors of different sizes, the rotor's axis position cannot be adjusted. When press-fitting rotors of different diameters, the rotor and bearing cannot maintain coaxiality. Consequently, the press-fitting fixture can only press-fit rotors of a fixed diameter and cannot press-fit bearings of various diameters, failing to adequately meet operational requirements. Therefore, designing a new type of bearing press-fitting fixture is of great significance. Summary of the Invention
[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a novel bearing press-fitting fixture.
[0005] The purpose of this utility model can be achieved through the following technical solution: a new type of bearing press-fitting fixture, characterized in that it includes a fixture frame, a slide rail is fixedly installed on the fixture frame, a pneumatic slide table is installed on the slide rail, and a positioning mechanism is installed on the pneumatic slide table.
[0006] The positioning mechanism includes a limiting rod slidably mounted on a pneumatic slide table, a fixing plate fixedly mounted at the top of the limiting rod, a placement platform fixedly mounted on the fixing plate, a telescopic cylinder fixedly mounted on the fixing plate, a connecting plate fixedly mounted at the output end of the telescopic cylinder, a clamping block fixedly mounted on the connecting plate to cooperate with the placement platform, a lead screw motor fixedly mounted on the pneumatic slide table, and a threaded sleeve fixedly mounted at the bottom of the fixing plate, with the threaded sleeve sleeved on the lead screw of the lead screw motor.
[0007] In the aforementioned novel bearing press-fitting fixture, a guide rod is fixedly mounted on the fixture frame, a press-fitting plate is slidably mounted on the guide rod, and a guide block is fixedly mounted on the press-fitting plate, with the guide block sleeved on the surface of the guide rod.
[0008] In the aforementioned novel bearing press-fitting fixture, both the fixture frame and the press-fitting plate are fixedly provided with fixing blocks, the fixing blocks are provided with assembly slots, and both the fixture frame and the press-fitting plate are fixedly provided with feeding mechanisms.
[0009] In the aforementioned novel bearing press-fitting fixture, the feeding mechanism includes a loading platform, a support rod is fixedly mounted on the loading platform, a detachable loading rod is mounted on one side of the support rod, an inlet is provided on the loading platform and the inlet is located directly below the loading rod, an outlet is provided on one side of the loading platform and the inlet and outlet are connected, and a feeding plate is fixedly mounted at the outlet.
[0010] In the aforementioned novel bearing press-fitting fixture, a telescopic cylinder 2 is fixedly installed on one side of the loading platform, a connecting plate 2 is fixedly installed at the output end of the telescopic cylinder 2, and a push plate is fixedly installed on the connecting plate 2, and the push plate is slidably installed inside the loading platform.
[0011] In the aforementioned novel bearing press-fitting fixture, a telescopic cylinder three is fixedly installed on the loading platform, and a baffle is fixedly installed at the output end of the telescopic cylinder three, with the baffle located at the feeding plate.
[0012] In the aforementioned novel bearing press-fitting fixture, a pneumatic slide table 2 is fixedly installed at the bottom of the press-fitting plate, and the pneumatic slide table 2 is mounted on a slide rail.
[0013] Compared with existing technologies, this new bearing press-fitting fixture can perform bearing press-fitting on rotors of different diameters, thereby improving the utilization rate of the fixture. Attached Figure Description
[0014] Figure 1 This is a three-dimensional schematic diagram of the new bearing press-fitting fixture.
[0015] Figure 2 This is a schematic diagram of the positioning mechanism of this new bearing press-fitting fixture.
[0016] Figure 3 This is a schematic diagram of the feeding mechanism of this new bearing press-fitting fixture.
[0017] In the diagram, 1. Tooling frame; 2. Slide rail; 3. Pneumatic slide table one; 4. Positioning mechanism; 5. Limiting rod; 6. Fixing plate; 7. Placement platform; 8. Telescopic cylinder one; 9. Connecting plate one; 10. Clamping block; 11. Lead screw motor; 12. Threaded sleeve block; 13. Guide rod; 14. Press plate; 15. Guide block; 16. Fixing block; 17. Assembly slot; 18. Feeding mechanism; 19. Loading platform; 20. Support rod; 21. Loading rod; 22. Inlet; 23. Outlet; 24. Feeding plate; 25. Telescopic cylinder two; 26. Connecting plate two; 27. Push plate; 28. Telescopic cylinder three; 29. Baffle; 30. Pneumatic slide table two. Detailed Implementation
[0018] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.
[0019] like Figure 1-3 As shown, this novel bearing press-fitting fixture includes a fixture frame 1, a slide rail 2 fixedly mounted on the fixture frame 1, a pneumatic slide table 3 mounted on the slide rail 2, and a positioning mechanism 4 mounted on the pneumatic slide table 3. The positioning mechanism 4 includes a limiting rod 5 slidably mounted on the pneumatic slide table 3, a fixing plate 6 fixedly mounted at the top of the limiting rod 5, a placement platform 7 fixedly mounted on the fixing plate 6, a telescopic cylinder 8 fixedly mounted on the fixing plate 6, a connecting plate 9 fixedly mounted at the output end of the telescopic cylinder 8, a clamping block 10 fixedly mounted on the connecting plate 9 to clamp the placement platform 7, a lead screw motor 11 fixedly mounted on the pneumatic slide table 3, and a threaded sleeve block 12 fixedly mounted at the bottom of the fixing plate 6. The threaded sleeve 12 is mounted on the lead screw of the lead screw motor 11. When pressing rotors of different diameters into bearings, the rotor is placed on the placement table 7. The clamping block 10 is moved by the telescopic cylinder 8. The clamping block 10 cooperates with the placement block to clamp and position the rotor. Then, the fixed plate 6 can be moved up and down by the cooperation of the lead screw motor 11 and the threaded sleeve 12, thereby adjusting the position of the rotor axis so that the rotor axis can keep the same axiality as the bearing. This allows the tooling to press rotors of different diameters into bearings, improving the utilization rate of the tooling. The movement of the lead screw is a precise thread movement, which can achieve high precision and meet the requirements of bearing pressing.
[0020] Preferably, a guide rod 13 is fixedly provided on the tooling frame 1, a pressure plate 14 is slidably provided on the guide rod 13, a guide block 15 is fixedly provided on the pressure plate 14, and the guide block 15 is sleeved on the surface of the guide rod 13.
[0021] Preferably, a fixing block 16 is fixedly provided on both the tooling frame 1 and the pressing plate 14. An assembly groove 17 is provided on the fixing block 16. A feeding mechanism 18 is fixedly provided on both the tooling frame 1 and the pressing plate 14. After the rotor is positioned, the feeding mechanism 18 sends the bearing to the assembly groove 17. Then, the pneumatic slide table 3 and the pneumatic slide table 30 move to press the bearings on both sides of the rotor through the assembly groove 17 on the tooling frame 1 and the assembly groove 17 on the pressing plate 14.
[0022] Preferably, the feeding mechanism 18 includes a loading platform 19, on which a support rod 20 is fixedly mounted. A detachable loading rod 21 is provided on one side of the support rod 20. The loading platform 19 has an inlet 22 located directly below the loading rod 21. An outlet 23 is provided on one side of the loading platform 19, and the inlet 22 and outlet 23 are connected. A feeding plate 24 is fixedly mounted at the outlet 23. Multiple bearings are mounted on the loading rod 21. The second telescopic cylinder 25 moves the push plate outward, and the bearings on the loading rod 21 fall into the loading platform 19 from the inlet 22. The second telescopic cylinder 25 then moves the push plate 27 to push the bearings out from the outlet 23.
[0023] Preferably, a telescopic cylinder 25 is fixedly installed on one side of the loading platform 19, a connecting plate 26 is fixedly installed at the output end of the telescopic cylinder 25, a push plate is fixedly installed on the connecting plate 26, and the push plate is slidably installed inside the loading platform 19.
[0024] Preferably, a telescopic cylinder 28 is fixedly installed on the loading platform 19, and a baffle 29 is fixedly installed at the output end of the telescopic cylinder 28. The baffle 29 is located at the feeding plate 24. When the bearing slides into the assembly groove 17 through the feeding plate 24, the telescopic cylinder 28 is used to block the baffle 29 at the assembly groove 17, so that the bearing can fall stably into the assembly groove 17.
[0025] Preferably, a pneumatic slide table 30 is fixedly provided at the bottom of the press plate 14, and the pneumatic slide table 30 is provided on the slide rail 2.
[0026] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.
[0027] Although this document uses a number of technical terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.
Claims
1. A novel bearing press-fit tool characterized by, Including tooling frame (1), Fixedly provided with slide rail (2) on tooling frame (1), Provided with pneumatic slide one (3) on slide rail (2), Provided with positioning mechanism (4) on pneumatic slide one (3); The positioning mechanism (4) includes a limiting rod (5) slidably disposed on the pneumatic slide one (3), a fixed plate (6) is fixedly provided at the top end of the limiting rod (5), a placement table (7) is fixedly provided on the fixed plate (6), a telescopic cylinder one (8) is fixedly provided on the fixed plate (6), a connecting plate one (9) is fixedly provided at the output end of the telescopic cylinder one (8), a clamping block (10) is fixedly provided on the connecting plate one (9) to cooperate with the clamping of the placement table (7), a lead screw motor (11) is fixedly provided on the pneumatic slide one (3), and a threaded sleeve block (12) is fixedly provided at the bottom of the fixed plate (6), and the threaded sleeve block (12) is sleeved on the lead screw of the lead screw motor (11).
2. A novel bearing press-fitting tool according to claim 1, characterized in that, The tooling frame (1) is fixedly provided with a guide rod (13), and the guide rod (13) is slidably provided with a press fitting plate (14), the press fitting plate (14) is fixedly provided with a guide block (15), and the guide block (15) is sleeved on the surface of the guide rod (13).
3. A novel bearing press-fitting tool according to claim 1, characterized in that, The tooling frame (1) and the press fitting plate (14) are both fixedly provided with a fixed block (16), the fixed block (16) is provided with an assembly groove (17), and the tooling frame (1) and the press fitting plate (14) are both fixedly provided with a feeding mechanism (18).
4. A novel bearing press-fitting tool according to claim 3, characterized in that, The feeding mechanism (18) includes a loading table (19), the loading table (19) is fixedly provided with a supporting rod (20), one side of the supporting rod (20) is provided with a detachable loading rod (21), the loading table (19) is provided with a feeding port (22), and the feeding port (22) is located directly below the loading rod (21), one side of the loading table (19) is provided with a discharging port (23), and the feeding port (22) and the discharging port (23) are communicated, and the discharging port (23) is fixedly provided with a feeding plate (24).
5. A novel bearing press-fitting tool according to claim 4, characterized in that, The loading table (19) is fixedly provided with a telescopic cylinder two (25) on one side, the telescopic cylinder two (25) is fixedly provided with a connecting plate two (26) at the output end, the connecting plate two (26) is fixedly provided with a pushing plate (27), and the pushing plate (27) is slidably arranged in the loading table (19).
6. A novel bearing press-fitting tool according to claim 4, characterized in that, The loading table (19) is fixedly provided with a telescopic cylinder three (28), the telescopic cylinder three (28) is fixedly provided with a baffle (29) at the output end, and the baffle (29) is located at the feeding plate (24).
7. A novel bearing press-fitting tool according to claim 2, characterized in that, The press fitting plate (14) is fixedly provided with a pneumatic slide two (30) at the bottom, and the pneumatic slide two (30) is arranged on the slide rail (2).