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NUMERICAL CONTROLLER HAVING SPEED CONTROL FUNCTION FOR MULTI-AXIS MACHINING DEVICE

  • US 20120221141A1
  • Filed: 11/01/2011
  • Published: 08/30/2012
  • Est. Priority Date: 02/25/2011
  • Status: Active Grant
First Claim
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1. A numerical controller for controlling a multi-axis machining device which machines a workpiece mounted on a table by using at least three linear axes and at least one rotary axis while changing a relative direction of a tool with respect to the workpiece,wherein said numerical controller, for executing a tool-center-point control in which a path of a tool center point with respect to the workpiece is instructed so as to move and machine the workpiece along the instructed path of the tool center point based on a speed instruction, comprises:

  • a synthesis speed control unit that sets said speed instruction so that said speed instruction is a synthesis speed with respect to a synthesis distance of a relative moving distance between the workpiece and a tool center point and a tool-direction changing distance due to a relative change in a tool direction with respect to the workpiece by the rotary axis; and

    an interpolation unit that interpolates positions of the linear axes and a position of the rotary axis by the tool-center-point control based on the speed instruction according to the synthesis speed,wherein the linear axes and the rotary axis are driven to the positions of the linear axes and the position of the rotary axis created by the interpolation unit.

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