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Control device and control method

  • US 10,315,282 B2
  • Filed: 04/24/2018
  • Issued: 06/11/2019
  • Est. Priority Date: 04/25/2017
  • Status: Active Grant
First Claim
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1. A control device for controlling a machine tool so as to drill a workpiece based on a machining program, wherein the machine tool includes a rotary tool configured to drill the workpiece and an axis feed motor configured to move the rotary tool in an axial direction,the control device comprising:

  • a motor control unit controlling the axis feed motor so that the rotary tool is axially moved by intermittently decelerated feed in which a feed rate of the rotary tool is alternately switched between a first feed rate and a second feed rate that is lower than the first feed rate, under a condition in which the following relational equations are satisfied;

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