Vision guided laser welding
US5168141A · kind A · utility
28Cited by
3References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 14, 1991 |
| Grant date | Dec 1, 1992 |
| Priority date | — |
| Expiry date | Jun 14, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K26/042
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
To produce precision laser weld joints at weld sites on a workpiece, a TV camera views each weld site through the laser beam optics, and the video output is stored as pixel data in a frame grabber memory. A computer processes the pixel data in accordance with an algorithm to locate the position of the optimum weld point for the imaged weld site relative to the laser beam centerline in the camera field of view and then indexes a X-Y positioning table to fine position the workpiece with the located optimum weld point precisely aligned with the laser beam centerline.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.