Manufacturing method of piston for swash plate type...

Details Manufacturing method of piston for swash plate type... Manufacturing method of piston for swash plate type...

2006-05-02

2006-05-02

Edmondson, Lynne R. (Department: 1725)

Metal fusion bonding

Process

Using dynamic frictional energy

C228S002100

Reexamination Certificate

active

07036708

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.

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