Multi-axial bearing machining center
The design of the multi-axial bearing machining center enables personalized preload adjustment for different bearings, solving the problem of inability to make personalized adjustments in existing technologies, and improving machining accuracy and bearing service life.
Patent Information
- Application Number
- CN202422281994.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-09-19
AI Technical Summary
Existing bearing machining centers cannot adjust the preload according to the specific needs of different bearings, resulting in reduced machining accuracy and shortened service life.
A multi-axial bearing machining center was designed, which uses a hydraulic cylinder to drive the push frame and preload block, combined with adjustable extrusion pads and rubber sleeves, to achieve personalized preload adjustment for multiple sets of bearing inner and outer rings. The stability of the positioning center column and rubber sleeve is ensured, and the stability and accuracy of the preload process are ensured by the structure of damping rings and fixed rings.
It improves the machining accuracy of bearings, extends the service life of bearings, and enhances the flexibility and efficiency of machining centers.
Smart Images
Figure CN223492691U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bearing processing technology, specifically a multi-axial bearing processing center. Background Technology
[0002] Bearings, as one of the key components in mechanical equipment, play a vital role in various industrial applications. To ensure the stability and reliability of bearings during actual operation, the requirements for manufacturing precision and assembly quality are becoming increasingly stringent. In the bearing assembly process, proper pre-tightening of the inner and outer rings is a crucial step, aiming to ensure bearing stability during operation, improve rotational accuracy, and extend service life.
[0003] While existing bearing machining centers can achieve a certain degree of automation, they can mostly only apply uniform pressure to individual bearings or groups of bearings when it comes to preload treatment of the inner and outer rings. They cannot make personalized adjustments according to the specific needs of different bearings. For example, during the machining process, bearings in different positions require different preload forces due to differences in materials or dimensions, which current technology cannot achieve. This leads to reduced machining accuracy and shortened bearing life. Utility Model Content
[0004] The purpose of this invention is to provide a multi-axial bearing machining center to solve the problem mentioned in the background art that current bearing machining centers cannot adjust the preload according to the specific needs of different bearings.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-axial bearing machining center, including a platform plate, on which fixed frames are symmetrically arranged, and push frames are provided on the inner side of each fixed frame. A hydraulic cylinder is provided between the fixed frame and the push frame, and a number of pre-tightening blocks with corresponding positions are provided on the corresponding side of each push frame. A number of positioning center columns are uniformly arranged in the middle of the platform plate, and rubber sleeves are provided on the outside of each positioning center column. Pressure shafts that are movably inserted on the push frame are connected to both sides of each pre-tightening block, and grooves are provided on the push frame at positions corresponding to the pre-tightening blocks. An adjustable compression pad is provided inside the groove, and a pressure block is provided on the back side of each pre-tightening block.
[0006] Preferably, a fixed shaft is provided on both sides of the groove, and a sealing plate is provided on the outer side of the extrusion pad, with both the upper and lower ends of the sealing plate sleeved on the outside of the fixed shaft.
[0007] Preferably, cylinders are provided on both sides of the groove, and a pressure ring is fixed to the output end of the cylinder through a connector. The pressure ring is sleeved on the outside of the outer end of the fixed shaft and located on the outside of the end of the sealing plate.
[0008] Preferably, a damping ring is provided on the rear side of the connection between the push frame and the pressure shaft, and the pressure shaft is movably inserted inside the damping ring.
[0009] Preferably, the pre-tightening block is provided with retaining rings on both sides, and the retaining rings are sleeved on the outside of the pressure shaft connection end and fixed by locking screws.
[0010] Preferably, side plates are connected to both sides of the fixed frame, and guide blocks are provided at both ends of the push frame to form a movable connection with the inner side of the side plate.
[0011] Compared with existing technologies, the beneficial effects of this invention are as follows: This multi-axial bearing machining center can simultaneously apply different degrees of preload to the inner and outer rings of multiple bearings, thereby improving machining accuracy and overall bearing performance, and extending bearing service life. The multi-axial bearing machining center, through the design of the positioning center column and rubber sleeve, ensures the stability and safety of the bearing during the preload process. Furthermore, the linkage mechanism between the hydraulic cylinder and the push frame enables precise movement of the preload block, and the adjustable characteristics of the pressure shaft and extrusion pad ensure personalized adjustment of the preload force for different bearings. These structural features collectively enhance the flexibility and efficiency of the machining center. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of a multi-axial bearing machining center according to the present invention;
[0013] Figure 2 This is a schematic diagram of the connection structure between the preload block and the push frame in a multi-axial bearing machining center according to this utility model;
[0014] Figure 3 This utility model relates to a multi-axial bearing machining center. Figure 2 Enlarged structural diagram at point A in the middle;
[0015] Figure 4 This is a schematic diagram of the connection structure between the push frame and the side plate of a multi-axial bearing machining center according to the present invention.
[0016] In the diagram: 1. Platform plate; 2. Fixed frame; 3. Push frame; 4. Hydraulic cylinder; 5. Preload block; 6. Pressure shaft; 7. Damping ring; 8. Fixed ring; 9. Positioning center column; 10. Rubber sleeve; 11. Side plate; 12. Groove; 13. Extrusion pad; 14. Edge sealing plate; 15. Pressure block; 16. Fixed shaft; 17. Cylinder; 18. Pressure ring. Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0018] Please see Figure 1-4This utility model provides a technical solution: a multi-axial bearing machining center, including a platform plate 1, on which fixed frames 2 are symmetrically welded and fixed. Each fixed frame 2 has a pusher frame 3 on its inner side. A hydraulic cylinder 4 is located between the fixed frame 2 and the pusher frame 3. The back end of the hydraulic cylinder 4 is fixedly connected to the fixed frame 2 by bolts. The output end of the hydraulic cylinder 4 is fixedly connected to the middle of the back side of the pusher frame 3. Several sets of pre-tightening blocks 5 are provided on the corresponding side of the pusher frame 3. The inner walls of the outer sides of the pre-tightening blocks 5 are all arc-shaped structures, and soft protective pads are adhered and fixed to their inner walls. Several positioning center columns 9 are uniformly welded and fixed in the middle of the platform plate 1. Rubber sleeves 10 are fitted around the positioning center columns 9. The rubber sleeves 10 can be selected according to different specifications based on the inner diameter of the bearing. Furthermore, pressure shafts 6 are movably inserted into the push frame 3 on both sides of the pre-tightening block 5, and grooves 12 are provided on the push frame 3 at positions corresponding to the pre-tightening block 5. An adjustable compression pad 13 is bonded and fixed inside the groove 12. A pressure block 15 is welded and fixed to the back side of the pre-tightening block 5. When pre-tightening the bearing is required, the bearing to be processed can be fitted onto the positioning center column 9. The rubber sleeve 10 fitted outside the positioning center column 9 can stabilize the bearing. When the hydraulic cylinder 4 is activated and drives the push frame 3 to move laterally along the inner side of the fixed frame 2, several sets of pre-tightening blocks 5 on the push frame 3 move accordingly and precisely align with the bearing position. The pressure shafts 6 can be pushed laterally on the push frame 3 to pre-adjust the pre-tightening of each set. The initial position of block 5 is adapted to accommodate the size requirements of different bearings. Simultaneously, the compression pad 13 on the push frame 3 can be pre-adjusted to meet the preload requirements of different bearing material properties. As the push frame 3 continues to move, the preload block 5 compresses the bearing. This, in turn, causes the pressure block 15 to compress the compression pad 13, achieving different levels of preload on the inner and outer rings of the bearing. This allows the machining center to adjust the preload for bearings in different positions, thereby improving machining accuracy, overall bearing performance, and extending bearing life. Both sides of the groove 12 are welded and fixed with a fixed shaft 16, and the outer side of the compression pad 13 is bonded and fixed with a sealing plate 14. Both the upper and lower ends of the sealing plate 14 are fitted over the fixed shaft 16. Cylinders 17 are also provided on both sides of the groove 12. The inner end of the cylinder 17 is fixed to the inner wall of the groove 12 by bolts, and the output end of the cylinder 17 is fixed with a pressure ring 18 by a connector. The pressure ring 18 is sleeved on the outside of the outer end of the fixed shaft 16 and located on the outside of the end of the sealing plate 14. When it is necessary to adjust the initial compression degree of the compression pad 13, the cylinder 17 can drive the pressure ring 18 to slide along the outside of the fixed shaft 16, thereby compressing or releasing the compression pad 13. By changing the position of the pressure ring 18, the compression degree of the compression pad 13 can be adjusted, thereby realizing the personalized adjustment of the bearing preload. A damping ring 7 is provided on the rear side of the connection between the push frame 3 and the pressure shaft 6, and the pressure shaft 6 is movably inserted inside the damping ring 7. The damping ring 7 of this structure provides a certain resistance for the pressure shaft 6.This design ensures that the preload block 5 remains in a preset position before being compressed, preventing positional shifts due to minor external vibrations or misoperation. Simultaneously, when the preload block 5 begins to compress the bearing, the pressure shaft 6 can move smoothly within the damping ring 7. The appropriate resistance provided by the damping ring 7 helps the pressure shaft 6 move smoothly, ensuring that the preload block 5's compression of the bearing is both stable and precise. This not only guarantees the initial stability of the preload block 5 but also ensures the normal movement of the pressure shaft 6 during the preload process. Both sides of the preload block 5 are equipped with retaining rings 8, which are fitted around the connecting end of the pressure shaft 6 and fixed with locking screws. This structure of retaining rings 8 fitted around the connecting end of the pressure shaft 6 and fixed with locking screws ensures... This design ensures a secure connection between the preload block 5 and the pressure shaft 6, while also allowing for easy assembly and disassembly of the preload block 5. Side plates 11 connect to both sides of the mounting frame 2, and the connections between the side plates 11 and the mounting frame 2 are all welded. Both ends of the push frame 3 are equipped with guide blocks that form a movable connection with the inner side of the side plates 11. The inner side of the side plates 11 has guide grooves that mate with the guide block structure at the ends of the push frame 3. This structure, where the guide blocks at both ends of the push frame 3 mate with the guide grooves on the inner side of the side plates 11, forms a reliable guiding structure. This allows the push frame 3 to move smoothly laterally under the drive of the hydraulic cylinder 4, thereby precisely controlling the preload force of the preload block 5 on the bearing and ensuring the accuracy and consistency of the preload process.
[0019] Working principle: When using this multi-axial bearing machining center, the initial position of each set of preload blocks 5 is first pre-adjusted by the pressure shaft 6, and the pressure ring 18 is driven by the cylinder 17 to move along the fixed shaft 16 to adjust the compression degree of the compression pad 13 to meet the preload requirements of different bearing material properties. Next, the bearing to be processed is placed on the positioning center column 9 evenly distributed on the platform plate 1. The rubber sleeve 10 on the outside of the positioning center column 9 ensures the stability of the bearing. Then, the hydraulic cylinder 4 is activated, and the hydraulic cylinder 4 drives the push frame 3 to move laterally along the inner side of the fixed frame 2. The guide blocks at both ends of the push frame 3 and the side plate 1 The inner guide grooves cooperate to move smoothly laterally. When the two push frames 3 close together, several sets of pre-tightening blocks 5 move and press against the bearing position to achieve the pre-tightening effect. When the pre-tightening blocks 5 press, they will drive the pressure block 15 to press the pressure pad 13, thereby achieving different degrees of pressure pre-tightening on the inner and outer rings of the bearing. During this process, the damping ring 7 provides appropriate resistance to the pressure shaft 6 to ensure that the pressure process of the pre-tightening blocks 5 on the bearing is both stable and accurate. The retaining rings 8 on both sides of the pre-tightening blocks 5 are fixed to the pressure shaft 6 by locking screws, which facilitates the disassembly and replacement of the pre-tightening blocks 5, thus completing a series of tasks.
[0020] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A multi-axial bearing machining center, comprising a platform plate (1), characterized in that: The platform plate (1) is symmetrically provided with a fixed frame (2), and a push frame (3) is provided on the inner side of each fixed frame (2). A hydraulic cylinder (4) is provided between the fixed frame (2) and the push frame (3). A number of pre-tightening blocks (5) with corresponding positions are provided on the side of the push frame (3). A number of positioning center columns (9) are uniformly provided in the middle of the platform plate (1). A rubber sleeve (10) is provided on the outside of the positioning center column (9). A pressure shaft (6) that is movably inserted on the push frame (3) is connected to both sides of the pre-tightening block (5). A groove (12) is provided on the push frame (3) at the position corresponding to the pre-tightening block (5). An adjustable compression pad (13) is provided inside the groove (12). A pressure block (15) is provided on the back side of the pre-tightening block (5).
2. The multi-axial bearing machining center according to claim 1, characterized in that: The groove (12) has a fixed shaft (16) on both sides, and the outer side of the extrusion pad (13) has a sealing plate (14), and the upper and lower ends of the sealing plate (14) are sleeved on the outside of the fixed shaft (16).
3. The multi-axial bearing machining center according to claim 2, characterized in that: The groove (12) is also provided with cylinders (17) on both sides, and the output end of the cylinder (17) is fixed with a pressure ring (18) through a connector. The pressure ring (18) is sleeved on the outside of the outer end of the fixed shaft (16) and located on the outside of the end of the sealing plate (14).
4. A multi-axial bearing machining center according to claim 1, characterized in that: A damping ring (7) is provided on the rear side of the connection between the push frame (3) and the pressure shaft (6), and the pressure shaft (6) is movably inserted inside the damping ring (7).
5. A multi-axial bearing machining center according to claim 1, characterized in that: Both sides of the pre-tightening block (5) are provided with retaining rings (8), and the retaining rings (8) are sleeved on the outside of the connecting end of the pressure shaft (6) and fixed by locking screws.
6. A multi-axial bearing machining center according to claim 1, characterized in that: Side plates (11) are connected to both sides of the fixed frame (2), and guide blocks are provided at both ends of the push frame (3) to form a movable connection with the inner side of the side plate (11).