Tapping control apparatus
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United States of America Patent
Stats
-
Mar 27, 1990
Grant Date -
N/A
app pub date -
Jun 28, 1988
filing date -
Nov 12, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A tapping control apparatus effects tapping operation by synchronizing the rotation of a spindle and the movement along a Z-axis through pulse distribution. The tapping control apparatus has a time constant determining unit (2) for determining a time constant according to a command speed for the spindle. The determined time constant is given to an acceleration/deceleration control circuit (10, 20) for performing tapping operation. Since a time constant is selected according to the rotational speed of the spindle, the time constant can be large to prevent overshooting or the like when the rotational speed of the spindle can be high, and the time constant is small for higher-speed machining operation when the rotational speed of the spindle is low.
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