Apparatus for laser welding pipes and the like
US4577087A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 29, 1984 |
| Grant date | Mar 18, 1986 |
| Priority date | — |
| Expiry date | Jun 29, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K26/282
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Laser welding apparatus includes a first mirror whose angle may be adjusted but which is fixed in position and on which a laser beam is incident. The first mirror reflects the laser beam onto a second mirror which may be rotated through at least 180.degree. about the axis of the articles to be welded and which reflects the laser beam onto a third mirror whose angle may be adjusted and which may be rotated through at least 360.degree. about the axis of the articles to be welded. The laser beam then passes to a focussing mirror which focusses the beam through a welding nozzle onto the surfaces to be welded. In use, the third mirror is continuously rotated about the entire periphery of the articles to be welded and the positions and/or angles of all the mirrors are adjusted to ensure that the laser beam is transmitted along the desired pathway.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.