Electrochemical machining of scroll wraps

Details Electrochemical machining of scroll wraps Electrochemical machining of scroll wraps

1993-03-04

1994-06-14

Bertsch, Richard A.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

29825, 204224M, 2041295, 2041297, 204212, F01C 102

Patent

active

053205057

ABSTRACT:
A method and apparatus for electrochemically machine lapping a matched set of fixed and orbiting scroll members for use in a scroll compressor. The orbiting scroll member is orbited in a short stroke relative to the fixed scroll member while an electrolyte is pumped between the scroll wraps. An electric current is passed through the fixed and orbiting scroll wraps to thereby electrochemically machine away high profile areas on corresponding metal wear surfaces. During the machining process, the clearance spacing between the scrolls is tightly controlled to prevent contact between the scrolls.

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patent: 5088906 (1992-02-01), Richardson

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