Laser welding apparatus and method
US8796582B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 7, 2006 |
| Grant date | Aug 5, 2014 |
| Priority date | — |
| Expiry date | Jun 23, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K26/082
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A laser welding apparatus includes a laser welding unit including a first lens adapted to focus a laser beam; a second lens adapted to diffuse the laser beam to the first lens; and a third lens adapted to guide the laser beam to the second lens. The relative positions of the first lens, the second lens, and the third lens, are adjusted to adjust a diffusion angle and a beam width of the laser beam entering the first lens. The laser welding apparatus performs: actuating the laser welding unit to travel at a predetermined speed along a predetermined trajectory; directing the laser beam at a first welding spot; adjusting the focal length to focus the laser beam at the first welding spot; holding the laser focal spot size substantially constant; and directing the laser beam at a second welding spot after completion of welding for the first welding spot.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.