Friction stir spot welding device and friction stir spot welding method
US10201873B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 22, 2015 |
| Grant date | Feb 12, 2019 |
| Priority date | — |
| Expiry date | Oct 22, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K2103/00
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A friction stir spot welding device includes a pin member, a shoulder member, a rotation driving unit, a tool driving unit, a position detector, and a controller, wherein the controller sets as reference position of the tip end surface of the pin member or shoulder member at a time point when the pin member tip end surface or shoulder member contacts an obverse surface of an object and controls the tool driving unit reducing a pressing force to the object by the pin member and pressing force to the object by the shoulder member in a next welding process, and/ or controls the rotation driving unit reducing the pin member rotational speed and shoulder member rotational speed in the next welding process, in case where a first position is the position of the tip end surface of the pin member or the shoulder member is within a first region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.