Manufacturing method of stator
US11710999B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Oct 29, 2021 |
| Grant date | Jul 25, 2023 |
| Priority date | — |
| Expiry date | Oct 29, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K37/0443
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A manufacturing method of a stator according to the disclosure includes a clamping process of clamping, among coil ends of segment coils assembled into a stator core, a pair of coil ends adjacent to each other in a circumferential direction, by a clamp jig that presses the pair of coil ends in the circumferential direction, and a welding process of welding the coil ends exposed through an opening portion provided in the clamp jig. The clamp jig includes a pressuring structure that increases a pressing force in a direction away from weld faces of the coil ends welded in the welding process, the pressuring structure being provided on at least one of sideward pressing faces that come into contact with side faces of the coil ends that are provided orthogonal to the weld faces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.