Welding start position detecting apparatus for welding robot
US5264677A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 1993 |
| Grant date | Nov 23, 1993 |
| Priority date | — |
| Expiry date | Jan 11, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K9/0672
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A welding start position detecting apparatus for a welding robot in which a first reference voltage and a second reference voltage having different voltage levels are set as comparison reference voltages in which, during a preset time period after start of searching operation, a voltage for detection of the welding start position is compared with the first reference voltage having a higher sensitivity and, when the welding start position detecting voltage comes across a level of the first reference voltage, the first reference voltage is switched to the second reference voltage having a lower sensitivity for comparing operation of the welding start position detecting voltage with the second reference voltage to thereby enable the detection of the welding start position on a base material even when an impedance around a welding torch changes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.