Heat manipulation and seam tracking of weaved welds
US10702942B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2017 |
| Grant date | Jul 7, 2020 |
| Priority date | — |
| Expiry date | Dec 26, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K9/127
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An arc welder produces a weave pattern between workpieces. Each weld run comprises a center portion including a joining region between the workpieces and edge regions spaced apart from the joining region. The welder includes a power source that provides a welding waveform to a welding electrode to generate an arc to achieve a desired heat for welding, a welding torch, and an oscillator for oscillating the torch between the welding edge regions. A controller causes the power source to operate in a first mode utilizing a first waveform during welding within the joining region, and in a second mode using a second waveform, having a greater positive component than the first waveform, during welding within the edge regions. The controller determines a stickout value based on the first waveform but not the second waveform, and performs seam tracking based the second waveform but not the first waveform.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.