Electrochemical machining method for rotors or stators for moineau pumps
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 22, 2018
Issued Date -
N/A
app pub date -
May 15, 2014
filing date -
May 15, 2014
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An ECM method involves the use of a thin hollow electrode assembly that carries the electrolyte within and that is advanced relatively to the workpiece. The small profile of the electrode results in a minimal removal of metal in forming the desired rotor or stator shape. The electrode profile allows significant power consumption reduction or increased machining speed for a given rate of power input. The electrode can be a unitary ring shape or can be made of segments that are placed adjacent each other so that a continuous shape is cut. Not all the lobes of the stator or rotor have to be cut in the same pass. Electrode segments can be used to sequentially provide the desired lobe count in separate passes. The lobe shapes in the electrode can be slanted to get the desired rotor or stator pitch or they can be aligned with the workpiece axis.
First Claim
Other Claims data not available
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International Classification(s)
- 2014 Application Filing Year
- F04C Class
- 476 Applications Filed
- 419 Patents Issued To-Date
- 88.03 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- F04C Class
- 36.96 % this patent is cited more than
- 7 Age
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