Friction stir welding bobbin tool
US10239152B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2017 |
| Grant date | Mar 26, 2019 |
| Priority date | — |
| Expiry date | Apr 26, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K20/1265
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A bobbin tool is disclosed that includes a top shoulder, a bottom shoulder, and an axial pin that extends between the top and bottom shoulders. The bottom shoulder has an annular shoulder end surface, a back surface opposite the annular shoulder end surface, and a side surface that joins the annular shoulder end surface and the back surface. One or more and radially-extending blades may be disposed on the side surface of the bottom shoulder and/or one or more axially-extending blades may be disposed on the back surface. The one or more blades provide the bobbin tool with an ability to friction stir weld a variable thickness workpiece assembly, axially plunged through the workpiece assembly along an axis of rotation of the bobbin tool, and/or be extracted through the workpiece assembly along an axis of rotation of the bobbin tool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.