Method of controlling electrode force of spot welding gun
US5988486A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 1998 |
| Grant date | Nov 23, 1999 |
| Priority date | — |
| Expiry date | Feb 24, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K11/317
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
In a spot welding gun which is made up of a gun main body which is operated for equalization by a driving source, a stationary electrode tip which is immovable relative to the gun main body, and a movable electrode tip which is connected to a pressing source, both electrode tips are pressed to a workpiece with an even force, to thereby perform a high quality spot welding. The driving source is controlled such that the electrode force of the stationary electrode tip, by the driving source, to the workpiece becomes substantially zero. In this manner, there occurs no difference in the electrode forces by both the electrode tips to the workpiece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.