Friction stir welding apparatus
US6499649B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2001 |
| Grant date | Dec 31, 2002 |
| Priority date | — |
| Expiry date | Jul 23, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K20/122
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A friction stir welding apparatus includes a rotary tool for friction stir welding, a spindle motor of a rotational driving unit for rotationally driving the rotary tool when the rotary tool is mounted on the rotational driving unit, a servo motor of a press driving unit for pressing the shank of the rotary tool against the surface of a portion to be butt welded when the rotational driving unit is mounted on the press driving unit, a mount bracket for supporting the press driving unit, a pressure sensor for detecting a pressing force exerted on the surface of the portion to be butt welded by the shank, and a control unit for controlling the driving of the servo motor such that the pressing force falls within a predetermined range based on a detection signal sent from the pressure sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.