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AssigneeFanuc Corporation
InventorsSusumu Ito, Masao Kamiguchi, Masato Yamamura, Noriaki Neko, Tatsuhiro Uchiyama, Yuichi Hosoya, Nobuto Takeda, Kaoru Hiraga
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An average is obtained between output readings of a pressure sensor obtained when forward and reverse thrusts are applied to an injection screw by positively driving a servomotor for injection. The average value is used as a correction value for a reading deviation of the pressure sensor. The injection servomotor is positively driven to apply a thrust to the screw. This known thrust and the actual reading of the sensor are compared. A deviation between these values is used as the correction value for the reading deviation of the sensor.
A zero correction method for a pressure detecting device of an injection molding machine, in which a pressure acting on a screw is detected by a pressure sensor for detecting forward and reverse pressures acting on an injection force transmitting member, comprising the steps of:
A zero correction method for a pressure detecting device of an injection molding machine, in which a pressure acting on a screw is detected by a pressure sensor attached to an injection force transmitting member, comprising the steps of:
Dependencies are inferred from the claim text.