Method of manufacturing a movable scroll element

Details Method of manufacturing a movable scroll element Method of manufacturing a movable scroll element

1997-08-04

1999-07-13

Cuda, Irene

Metal working

Method of mechanical manufacture

Prime mover or fluid pump making

418 552, 29558, B23P 1500

Patent

active

059209852

ABSTRACT:
A movable scroll element for a scroll type compressor is produced by a combination of a mold casting process and a machining process. The mold casting process produces a cast product having an end-plate forming portion, a spiral-member-forming portion and a projecting portion for forming a drive power receiving portion. The cast product has an entire outer faces covered with black scale, and the machining process machines the end-plate-forming portion, a spiral member forming portion, the projecting portion by cutting. Nevertheless, at least an outer circumference of the drive power receiving portion, i.e., a boss portion of the movable scroll element is covered with an outermost layer consisting of black scale. Thus, a sufficient mechanical strength of the movable scroll element is obtained even if the wall thickness of the drive power receiving portion, i.e., the boss portion of the movable scroll element, is reduced.

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patent: 5615480 (1997-04-01), Waggoner

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