Apparatus for controlling temperature of machine tool
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United States of America Patent
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Mar 30, 1993
Grant Date -
N/A
app pub date -
Oct 2, 1989
filing date -
Jun 20, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A temperature control apparatus for a machine tool includes four temperature sensors for detecting a reference temperature, outlet temperature of heat transfer fluid at an outlet of a heat exchanger, and temperatures of the heat transfer fluid at both inlet and an outlet of a machine tool element having a heat generating source. The four temperature sensors are arranged to constitute a differential temperature detecting means that activates control means to control temperature of the heat transfer fluid from the heat exchanger so as to minimize both deviations of heat transfer fluid temperature and steady-state deviations of machine tool body temperature.
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