Adaptive control system for welding inverted seams
US4544825A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 5, 1983 |
| Grant date | Oct 1, 1985 |
| Priority date | — |
| Expiry date | Jan 5, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K9/127
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Method and apparatus for welding edge joints such as turbine blades and the like, including adaptive tracking circuitry for maintaining the center of oscillation of the welding electrode substantially aligned with the center of the workpiece as the electrode is moved along the workpiece, and means for adjusting welding parameters such as welding current to prevent melt over of the edge and wirefeed rate to control overlay height as the welding electrode approaches to within a predetermined distance from the edge of the workpiece. The disclosed embodiment samples the arc signal, processes the arc signal to remove undesirable noise components, uses the processed signal to adaptively position the electrode with respect to the workpiece, and controls the welding parameters related to overlay height when the sensed position of the electrode reaches a predetermined distance from the edge of the workpiece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.