Method for manufacturing a rotor and manufacturing device for a rotor
By pressing the shaft onto the rotor core and using a hydraulic forming method, the shaft is expanded and fixed to the rotor core, solving the problem of stacking thickness deviation, achieving precise positioning of the shaft and rotor core, and improving product quality.
CN113994576BActive Publication Date: 2026-06-26AISIN CORP
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- AISIN CORP
- Filing Date
- 2020-05-21
- Publication Date
- 2026-06-26
AI Technical Summary
Technical Problem
In the existing technology, the stacking thickness of the rotor core has deviations, which causes deviations in the relative positional relationship between the shaft and the rotor core, affecting product quality.
Method used
By pressing along the central axis of the rotor core and using a hydraulic forming method, the shaft expands and is fixed to the rotor core, ensuring that the gap between the electromagnetic steel plates is reduced and the laminate thickness is controlled within the tolerance range.
Benefits of technology
This effectively prevents deviations in the relative positional relationship between the shaft and the rotor core, ensuring the positioning accuracy and consistency of the product.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN113994576B_ABST
Abstract
The present application relates to a manufacturing method of a rotor and a manufacturing apparatus of a rotor. The manufacturing method of the rotor includes a process of pressing a rotor core in a direction of a center axis by a core pressing member, and a process of fixing a shaft to the rotor core by hydraulic forming of the shaft against an inner circumferential surface of a shaft insertion hole in a state where the rotor core is pressed.
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