Method of and machine for grinding internal threads
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United States of America Patent
Stats
-
Aug 29, 1989
Grant Date -
N/A
app pub date -
Jul 8, 1987
filing date -
Jul 19, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The internal thread of a rotary workpiece, especially a ball thread, is ground with a CBN grinding wheel whose axis makes with the axis of the workpiece a grinding angle smaller than the lead angle of the thread to be ground. The profile of the grinding wheel is thereupon corrected by a diamond profiling roll whose axis makes with the axes of the grinding wheel an angle larger than the lead angle.
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