Process and device for mechanical grinding or sharpening of workpieces by use of electrically conductive grinding or sharpening tools
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United States of America Patent
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Oct 16, 1990
Grant Date -
N/A
app pub date -
May 25, 1988
filing date -
May 25, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process for the mechanical sharpening of workpieces using electrically conductive sharpening tools provides that, procedurally, first an electric spark gap is created between a sharpening tool (18) and workpiece during the contact of the sharpening tool (18) on the workpiece (10), and the contact position is determined by the arc discharge. Subsequently, for the sharpening process, the spark gap or potential is disconnected or is adjusted to such a value that essentially only a mechanical material removal occurs. The process is especially advantageous as executed on a device which provides electro-erosion processing or sharpening by the effects of electro-erosion, because then the control circuit (32) which is present for these purposes can be used not only for control of the spark gap during the electro-erosion treatment, but also for the contact of the sharpening tool.
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