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MACHINING STATUS MONITORING METHOD AND MACHINING STATUS MONITORING APPARATUS

  • US 20100063616A1
  • Filed: 09/04/2009
  • Published: 03/11/2010
  • Est. Priority Date: 09/05/2008
  • Status: Active Grant
First Claim
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1. A machining status monitoring method in a machine tool having tool holding means for holding a tool, workpiece holding means for holding a workpiece, drive means for operating one or both of the holding means, supply means for supplying coolant to a contact portion of the tool and the workpiece, control means for controlling the operation of the supply means, and controlling the operation of the drive means based on an operation command relating to one or both of the holding means, and display means for displaying image data, the machining status monitoring method comprising:

  • an actual image generating step of imaging the tool and the workpiece at a certain time interval by means of at least one imaging means from a predetermined view point, and in turn generating actual two-dimensional image data thereof;

    a model updating step in which, based on the operation command and data on three-dimensional models of the holding means, tool and workpiece, model data of the holding means, tool and workpiece when one or both of the holding means are operated according to the operation command are generated and the model data thereof are updated;

    a virtual image generating step of generating virtual two-dimensional image data of the tool and workpiece based on the model data updated in the model updating step, the virtual image data generating step in which a three-dimensional space is virtually set;

    in this virtual three-dimensional space, the three-dimensional models of the tool and workpiece are arranged and imaging means having the same condition as that of the actual imaging means is virtually set and arranged; and

    virtual two-dimensional image data which are assumed to be obtained when the tool and the workpiece are imaged at a certain time interval by the virtual imaging means from the same view point as that of the actual imaging means are generated in turn; and

    an image display step of checking whether coolant is being supplied to the contact portion of the tool and the workpiece based on information relating to the coolant supply state, and displaying on the display means actual two-dimensional image data generated by the actual imaging means when coolant is not being supplied, and displaying on the display means virtual two-dimensional image data generated in the virtual image generating step when coolant is being supplied.

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