Tool for profiling outer diameter of large bearing ring and ring rolling machine
By designing large bearing ring outer diameter profiling tooling and ring rolling machine, and using an annular groove structure of preformed and molded stations, the problems of low raw material utilization and low processing efficiency are solved, and efficient and low-cost bearing ring processing are achieved.
Patent Information
- Application Number
- CN202422522454.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-18
- Publication Date
- 2025-08-15
- Estimated Expiration
- 2034-10-18
AI Technical Summary
The production process of large bearing rings in the prior art has problems of low raw material utilization and low processing efficiency, especially in the process of vehicle processing, which requires additional discharge, resulting in increased costs and extended time.
Design a tool for profiling the outer diameter of a large bearing ring, including preforming stations and forming stations, and gradually profiling is used to process the main roller of the ring roller. Through the difference in the annular groove structure between the preforming stations and forming stations, the outer diameter steps of the bearing ring are gradually formed, combining the lifting holes and limiting groove structures to ensure processing quality and efficiency.
It improves raw material utilization, reduces the weight of the feed, saves forging and vehicle processing costs, and improves overall processing efficiency and molding quality.
Smart Images
Figure CN223222387U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of material forming, in particular to a tooling for profiling the outer diameter of a large bearing ring and a ring rolling machine. Background Art
[0002] Currently, the production process for large bearing rings generally involves blanking, heating, forging, normalizing, quenching and tempering, and machining. Products with an outer diameter step typically require forging into a rectangular piece, then lathing the required outer diameter step. Lathing increases blanking, reducing raw material utilization, and increases machining time, resulting in lower overall processing efficiency. Utility Model Content
[0003] The purpose of the utility model is to solve the problems existing in the above-mentioned prior art and to provide a tooling and ring rolling machine for profiling the outer diameter of a large bearing ring, which can effectively improve the utilization rate of raw materials and improve the overall processing efficiency.
[0004] The purpose of this utility model is achieved through the following technical solutions:
[0005] A tool for profiling the outer diameter of a large bearing ring. The outer surface of the tool is provided with at least one preforming station and one forming station distributed along its axial direction. Both the preforming station and the forming station have an annular groove structure. The opening width of the annular groove of the preforming station is larger than the opening width of the annular groove of the forming station. The tool is provided with an axial sleeve hole.
[0006] As a preferred embodiment of the present invention, the tooling includes at least one preforming unit tooling and one forming unit tooling stacked on top of each other.
[0007] As a preferred embodiment of the present invention, the upper and lower sides of the preforming unit tooling and the forming unit tooling are both provided with a plurality of lifting holes.
[0008] As a preferred embodiment of the present invention, among the mutually stacked unit toolings, the unit tooling at the bottom is provided with a limiting support step at the lower end of the axial sleeve hole.
[0009] As a preferred embodiment of the present invention, among the mutually stacked unit toolings, a plurality of connection holes are provided on the upper side surface of the uppermost unit tooling.
[0010] As a preferred embodiment of the present invention, an axial limiting groove is provided on the inner side wall of the axial sleeve hole.
[0011] As a preferred embodiment of the present invention, the limiting grooves have at least two evenly distributed around the circumference of the axial sleeve hole.
[0012] The utility model also provides a ring rolling machine. The main roller of the ring rolling machine is sleeved with the tooling for profiling the outer diameter of the large bearing ring as described above.
[0013] The advantages of the utility model are that the outer diameter of the large bearing ring is profiled by using two workstations in sequence, so as to improve the utilization rate of raw materials and the overall processing efficiency while ensuring the quality of step forming, and also save the time and cost required for turning. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 A schematic diagram of the structure of a tool for profiling the outer diameter of a large bearing ring provided in this embodiment;
[0015] In the figure: 1-preforming station; 2-forming station; 3-axial set hole; 31-limiting groove; 4-lifting hole; 10-preforming unit tooling; 20-forming unit tooling; 201-limiting support step. DETAILED DESCRIPTION
[0016] The present invention will be described in further detail below with reference to the accompanying drawings and specific implementations.
[0017] like Figure 1 As shown, this embodiment provides a tool for profiling the outer diameter of a large bearing ring. A preforming station 1 and a forming station 2 are arranged axially on the outer surface of the tool. Both preforming station 1 and forming station 2 have an annular groove structure, with the opening width of the annular groove of preforming station 1 being larger than that of forming station 2. The tool is also provided with an axial insertion hole 3. This tool is used on a ring rolling machine. Specifically, it is mounted on the main roller of the ring rolling machine through the axial insertion hole 3. It rotates with the main roller, thereby driving the ring blank to rotate and gradually form a bearing ring, while gradually forming a step on the outer diameter of the bearing ring. In this embodiment, preforming station 1 is located at the top, and forming station 2 is located at the bottom; of course, the preforming station can also be located at the bottom, and the forming station at the top. The annular groove structure of the forming station is identical to the step structure required for machining the bearing ring, while the opening of the annular groove structure of the pre-forming station is slightly larger, serving as a transition during the step-forming process. This tooling is designed for large, heavy bearing rings. If the steps are formed in one go using only the forming station, excessive steel stock can easily accumulate, causing folding and impacting the forming quality. Therefore, this tooling employs two stations to sequentially extrude the steps on the outer diameter of the bearing ring to ensure forming quality. During use, pre-forming station 1 is first aligned with the machining area. Once pre-forming is complete, the main roller of the ring rolling machine is raised and lowered to align forming station 2 with the machining area until the steps are formed. If the required position of the steps on the bearing ring changes, the height of the stations can be adjusted by raising and lowering the main roller, thus meeting the processing requirements of various bearing ring models.
[0018] In addition, as needed, this tool can be equipped with two pre-forming stations 1 and one forming station 2. The annular groove structure opening widths of the two pre-forming stations 1 are different, thus realizing a three-step forming processing method. Of course, due to the limited length and lifting height of the main roller itself, this tool can generally only be equipped with 2-3 stations.
[0019] Due to the heavy weight of this fixture, to facilitate processing and assembly, it consists of a stacked preforming unit fixture 10 and a forming unit fixture 20. In this embodiment, the preforming unit fixture 10 is on top, and the forming unit fixture 20 is on the bottom. During assembly, the two units can be sequentially placed onto the main roller of the ring rolling machine, reducing assembly pressure. Of course, as needed, more preforming unit fixtures 10 can be used, with the annular groove structures on multiple preforming unit fixtures having different opening widths. Also, due to the heavy weight of this fixture, it is generally necessary to use lifting equipment for transfer and assembly. Therefore, multiple lifting holes 4 are provided on the upper and lower sides of the preforming unit fixture 10 and the forming unit fixture 20 to accommodate lifting equipment. Furthermore, the split structure can meet more diverse assembly requirements. Different types of preforming and forming unit fixtures can be assembled according to processing requirements. For example, if the bottom width of the step has different requirements, the preforming unit fixture 10 can be retained and only the corresponding forming unit fixture 20 can be replaced, thus saving tooling costs and improving tooling utilization.
[0020] To ensure the stability of the fixture's axial position on the ring rolling machine's main roller, the lower forming unit fixture 20 is equipped with a limiting support step 201 at the lower end of the axial mounting hole 3 to mate with the support step on the lower portion of the main roller, providing stable support. The upper preforming unit fixture 10 is equipped with multiple connection holes on its upper side to mate with the top cover on the main roller, achieving a stable connection via bolts. Thus, the upper and lower ends of the entire fixture are respectively limited by the top cover and support step on the main roller, effectively securing the axial position between the fixture and the main roller. This eliminates the need for additional connecting and fixing structures between the two unit fixtures, making assembly and disassembly more convenient.
[0021] To ensure the stable rotation of the fixture along with the main roller, a circumferential limiting structure is required between the two. Specifically, an axial limiting groove 31 is provided on the inner sidewall of the axial sleeve hole 3, and a corresponding limiting groove is also provided on the outer sidewall of the main roller. By inserting a limiting pin into the two corresponding limiting grooves, the circumferential limiting of the two is achieved. Considering the balanced force, a limiting groove 31 is provided on each opposite side of the inner sidewall of the axial sleeve hole 3, and a limiting groove is also provided on the opposite side of the outer sidewall of the main roller. Thus, two limiting pins are inserted into the two sets of limiting grooves, ensuring the stability of the axial limiting of the two.
[0022] Compared with the turning processing of the existing technology, the use of this tooling can greatly reduce the weight of the blanking and improve the yield rate of steel while meeting the forming quality requirements. At the same time, it saves the fuel cost required for forging and the tool cost required for turning, thereby improving the overall processing efficiency.
[0023] This embodiment also provides a ring rolling machine, which adopts the existing structure. The main roller of the ring rolling machine is provided with a tool for profiling the outer diameter of a large bearing ring as described above, so as to realize the outer diameter step profiling processing of the large bearing ring. The specific processing principle is as described above and will not be repeated here.
[0024] The above is only a preferred embodiment of the present invention, which is one implementation method based on the overall concept of the present invention. The scope of protection of the present invention is not limited to this embodiment. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.
Claims
1. A tool for profiling the outer diameter of a large bearing ring, characterized in that: At least one preforming station and one forming station are distributed along the axial direction on the outer surface of the tooling. Both the preforming station and the forming station have an annular groove structure. The opening width of the annular groove of the preforming station is larger than the opening width of the annular groove of the forming station. The tooling is provided with an axial sleeve hole.
2. A tool for profiling the outer diameter of a large bearing ring according to claim 1, characterized in that: The tooling includes at least one preforming unit tooling and one forming unit tooling which are stacked on top of each other.
3. A tool for profiling the outer diameter of a large bearing ring according to claim 2, characterized in that: The upper and lower sides of the preforming unit tooling and the forming unit tooling are both provided with a plurality of lifting holes.
4. A tool for profiling the outer diameter of a large bearing ring according to claim 2, characterized in that: Among the mutually stacked unit tools, the unit tool at the bottom is provided with a limiting support step at the lower end of the axial sleeve hole.
5. The tool for profiling the outer diameter of a large bearing ring according to claim 2, characterized in that: Among the mutually stacked unit toolings, a plurality of connection holes are provided on the upper side surface of the unit tooling located at the top.
6. The tool for profiling the outer diameter of a large bearing ring according to claim 1, characterized in that: An axial limiting groove is provided on the inner side wall of the axial sleeve hole.
7. A tool for profiling the outer diameter of a large bearing ring according to claim 6, characterized in that: The limiting grooves have at least two grooves evenly distributed in the circumferential direction of the axial sleeve hole.
8. A ring rolling machine, characterized in that: The main roller of the ring rolling machine is provided with a tool for profiling the outer diameter of a large bearing ring as described in any one of claims 1 to 7.