Method of manufacturing structural body and structural body
US6745929B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 2001 |
| Grant date | Jun 8, 2004 |
| Priority date | — |
| Expiry date | Feb 23, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T30/00
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Plural extrusion members 100, each having plural ribs 105 formed on one surface of a face plate 101, are mounted on a frame 40 with the surface not having the ribs 105 facing downward, and with the end regions of the adjacent members 100, 100 being butted to each other. Then, the end regions of said members 100 are welded using friction stir welding from the upper direction with a rotary body 20, and then a hairline finish is applied to said surface not having the ribs, which constitutes the exterior surface of the vehicle body. In this way, there is substantially no need to cut off the joint bead, which improves the appearance of the vehicle body and reduces the manufacturing cost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.