APPARATUS FOR ELECTROCHEMICALLY MACHINING A METALLIC WORKPIECE
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United States of America Patent
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Feb 18, 2016
app pub date -
Aug 14, 2015
filing date -
Aug 16, 2014
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Abstract
An apparatus for electrochemically machining a workpiece has a tool having a surface-machining part and a piercing part. The parts are relatively fixed and jointly movable. A power source oppositely polarizes the tool and the workpiece and an electrolyte is fed to the workpiece. The tool is pressed against the workpiece such that the surface-machining part forms a shaped surface on the workpiece and simultaneously the piercing part forms or enlarges a bore in the workpiece.
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