Specifications

4
“Needs” × “Evolution” Customers’ needs and OIL MATIC’s evolution
* The graph was illustrated in consideration of market trends.
Working accuracy
ON
-
OFF control
Developed OIL MATIC, a temperature regulator with ON-OFF
control using thermostats, to control hydraulic fluid temperature at
constant temperature throughout the year.
Commercialized a temperature regulator with ON-OFF control using
thermistor sensors.
Gas bypass
ON
-
OFF control
Provided refrigerant gas bypass and an electromagnetic
valve on a refrigerant circuit to enable the opening and
closing of the valve according to preset temperature.
PID control
(Eliminates steady-state deviation of
ON-OFF control)
Commercialized a temperature
regulator with PID control using
a refrigerant flow control valve
provided in a refrigerant circuit
for variable control of valve
opening.
Precision
improvement
of OIL MATIC (improve
ment in temperature control accuracy)
I
nverter PID control
Commercialized a temperature regulator
with inverter PID control using an
inverter-type chiller.
Realized high responsiveness by
incorporating conventional feedback control
and new feed-forward control in
combination.
Commercialized products with sophisticated
inverter controller and high-efficiency heat
exchanger to meet requirements for
high-precision, high-responsiveness, and
energy-saving products.
Application to microfabrication
machines
Commercialized a high-precision
temperature regulator to respond to
advances in microfabrication.
Application to
ultra-precision machining
machines
Commercialized a product
incorporating new ultra-precision
temperature control technology and
a high-precision pressure control
technology.
Year
Liquid temperature fluctuation
Precision
improvement
of machine tools (improvement in working accuracy = imp
rovement in shape accuracy)
1982 - 1965 -
Current trend
1991 -