Method of inducing arc generation in arc welding
US5630955A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 1995 |
| Grant date | May 20, 1997 |
| Priority date | — |
| Expiry date | Sep 13, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K9/0672
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of inducing arc generation in arc welding between a head of a wire and a workpiece, such that a robot supports a welding torch, thereby causing the head of the wire to be brought near a welding start position on a workpiece. However, if there is a failure to generate an arc between the head of the wire at the position and the workpiece within a predetermined time, at least one cycle is repeated of a sequential retrial motion, in which first the robot is made to move to cause the head of the wire to be moved at a predetermined speed from a position close to the present welding start position to another position away from the position by a predetermined distance, and then the robot is made to move in the opposite direction to cause the head of the wire to be moved at a predetermined speed toward the welding start position. Then, when an arc generation signal is detected during repeated performance of the retrial motion, the retrial motion is stopped, and a predetermined welding for the workpiece is started.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.