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Drive method for production machine

  • US 7,519,450 B2
  • Filed: 07/07/2005
  • Issued: 04/14/2009
  • Est. Priority Date: 07/09/2004
  • Status: Active Grant
First Claim
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1. A drive method for a production machine adapted to drive an actuator of the production machine by use of a power drive source, the method comprising the steps of:

  • driving the actuator by use of the power drive source, while switching drive output of the power drive source among a plurality of different drive outputs;

    detecting values of at least a physical quantity regarding an operation state of the actuator and a physical quantity regarding energy consumption corresponding to the operation state;

    selecting one of the drive outputs on the basis of the detected values and in accordance with a predetermined selection method; and

    driving the actuator with the selected drive output; and

    wherein the power drive source is a hydraulic drive source, and the actuator is a hydraulic actuator driven by the hydraulic drive source,wherein the step of detecting values of the physical quantities includes performing detection processing in response to selection of a detection mode,wherein the detection mode is selected by use of an output selection screen displayed on a display, andwherein at least an electricity saving ratio with respect to electricity consumption at the time of the maximum drive output is displayed on the output selection screen.

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