Electrolysis: processes – compositions used therein – and methods – Electrolytic erosion of a workpiece for shape or surface... – With mechanical abrasion or grinding
Reexamination Certificate
2011-07-12
2011-07-12
Evans, Geoffrey S (Department: 3742)
Electrolysis: processes, compositions used therein, and methods
Electrolytic erosion of a workpiece for shape or surface...
With mechanical abrasion or grinding
C205S663000, C219S069170
Reexamination Certificate
active
07976694
ABSTRACT:
An apparatus and method for hybrid machining a workpiece is disclosed. The workpiece is powered as an anode, a cutter is powered as a cathode and a cutting fluid or coolant is circulated therebetween. The cutter is made of a conductive material and a non-conductive abrasive material. The hybrid machine performs a roughing pass machining operation in which material is removed from the workpiece at a relatively high rate using a high-speed electro-erosion (HSEE) process. Then, the hybrid machine performs a finish pass machining operation in which material is removed from the workpiece using precision electro-grinding (PEG) process at a different differential electrical potential and/or flushing rate than the roughing pass machining operation to provide a smooth finish without thermal effects on the workpiece.
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Kray Nicholas Joseph
Lamphere Michael Scott
Miller Joshua Leigh
Trimmer Andrew Lee
Wei Bin
Clarke Penny A.
Evans Geoffrey S
General Electric Company
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