Method of manufacturing cylindrical body, friction stir welding method, and friction stir welding device
US7556187B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2008 |
| Grant date | Jul 7, 2009 |
| Priority date | — |
| Expiry date | Aug 29, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K2101/06
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A friction stir welding apparatus (120) brings end faces (1, 2) of a plate material (W1), having fingers (7a through 7d) at corners thereof, into abutment against each other to form a hollow cylindrical body (W2), and friction-stir-welds the end faces (1, 2) to each other. The apparatus includes a base (122), a first support device and second support device which are mounted on the base (122), a support core (32) spaced from the base (122) by the first support device and the second support device, for insertion into the hollow cylindrical body (W2) and for supporting the hollow cylindrical body (W2), and a first gripping member (238) and a second gripping member (268) disposed on the support core (32) for gripping respective protrusions (8, 9), which are formed when the fingers (7a through 7d) are held in abutment against opposite ends of abutting regions of the hollow cylindrical body (W2), and which extend along a joining direction. The support core (32) has passages (258, 260) defined therein for passage of a cooling medium therethrough.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.