Friction stir welding apparatus with an L-shaped support
US9975200B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 2014 |
| Grant date | May 22, 2018 |
| Priority date | — |
| Expiry date | Sep 7, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K37/0294
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A friction stir welding apparatus includes: a rotating shaft, on which a thread for friction stirring is formed; and a drive unit rotatably supporting the rotating shaft. A rotating shoulder configured to rotate together with the rotating shaft to generate frictional heat between the rotating shoulder and back surfaces of workpieces is fixed to a distal end of the rotating shaft. The rotating shoulder is pushed against the back surfaces of the workpieces by a pushing mechanism. A stationary shoulder penetrated by the rotating shaft and configured to hold the workpieces in a sandwiching manner together with the rotating shoulder is non-rotatably mounted to the drive unit or a member connected to the drive unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.