Split roller and method of manufacturing same
By splitting the rolling mill shaft into a shaft body and a sleeve body and using an interference fit connection, the problems of insufficient material utilization and low production efficiency are solved, resulting in cost reduction and efficiency improvement.
CN122400477APending Publication Date: 2026-07-17哈尔滨轴承制造有限公司
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Patent Information
- Application Number
- CN202610834241.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-06-10
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
The existing roller bearing is a one-piece structure, which results in insufficient material utilization, high production costs, and low production efficiency.
Method used
The roller is split into two independent parts: the roller body and the sleeve body. They are connected by an interference fit to achieve rational use of materials and flexible scheduling of production.
Benefits of technology
Reduce production costs, improve production efficiency, and ensure molding accuracy and production stability.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN122400477A_ABST
Abstract
This invention discloses a split-type rolling mill shaft and its processing method, belonging to the technical field of rolling and expanding processes in forging lines. It includes a shaft body and a sleeve body, with the sleeve body fitted onto the shaft body. The shaft body sequentially comprises a machine tool connecting section, an intermediate mating section, and a workpiece working section. The maximum outer diameter of the machine tool connecting section is 55mm, and the maximum outer diameter of the workpiece working section is 40mm-50mm. The sleeve body has a ring structure and is fixedly fitted onto the outer wall of the intermediate mating section via an interference fit. The outer wall of the sleeve body forms a positioning boss for axial positioning of the workpiece during rolling and expanding. The outer diameter of the sleeve body is 75mm-135mm, and the axial width is 10mm-20mm. The heat treatment hardness of the shaft body and the sleeve body is HRC46-49, and the surface finish of the mating surface between the outer wall of the intermediate mating section and the inner hole of the sleeve body is Ra1.6. This invention, employing the aforementioned split-type rolling mill shaft and its processing method, achieves rational material utilization and flexible production scheduling by separating the rolling mill shaft into two independent components: the shaft body and the sleeve body, thereby reducing production costs and improving production efficiency.
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