Manufacturing method of piston for swash plate type compressor with variable capacity
US7036708B2 · kind B2 · utility
15Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2003 |
| Grant date | May 2, 2006 |
| Priority date | — |
| Expiry date | Apr 14, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49826
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
In a friction stir welding method of manufacturing a piston for a variable capacity swash plate type compressor, the welder is shifted from the welded portions to a predetermined position while maintaining contact between the welder and one of the piston members. After finishing the friction stir welding, a hole is not formed in the welded portions of the piston members to improve durability of the welded portions. The piston members are elastically supported by support rollers to align the central axial lines of the piston members with the axial line of the chuck, even though the diameters of the piston members differ.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.