Arc-welding seam-tracking applications employing passive infrared sensors
US4477712A · kind A · utility
31Cited by
6References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1982 |
| Grant date | Oct 16, 1984 |
| Priority date | — |
| Expiry date | Apr 26, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23Q35/128
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
In an arc welding operation seam tracking is accomplished by determining the level of infrared radiation in a selected bandwidth, from at least two points lying in a direction forward of the arc torch travel and on opposite sides of the seam. Signal levels from the infrared detectors are compared and the difference signal is used to laterally position the arc torch. In this way, automatic seam tracking is accomplished thus facilitating robotic welding processes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.