Friction stir welding apparatus of piston for swash plate...

Details Friction stir welding apparatus of piston for swash plate... Friction stir welding apparatus of piston for swash plate...

2005-10-11

2005-10-11

Edmondson, Lynne R. (Department: 1725)

Metal fusion bonding

Including means to provide heat by friction between...

C228S112100

Reexamination Certificate

active

06953140

ABSTRACT:
A friction stir welding apparatus of a piston for variable capacity swash plate type compressor bonds two pistons through frictions stir welding without forming a hole in welded portions of the piston members. The friction stir welding apparatus includes: A support that rotatably supports coaxially coupled first and second pistons. A welder, rotatably inserted into welded portions of the first and second pistons supported on the support, performs friction stir welding along the rotation direction of the first and second pistons. Support rollers elastically mounted on the lower portions of the pistons have central axis lines of the piston members on central axis lines of the rotation support while the pistons are supported on the support. The rollers vertically move through a predetermined height while supporting the pistons. The welder is transferred from the welded portions to another position after welding of the welded portions.

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