Closed-loop CNC machine system and method

  • US 8,136,432 B2
  • Filed: 03/18/2011
  • Issued: 03/20/2012
  • Est. Priority Date: 06/10/2005
  • Status: Active Grant
First Claim
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1. A closed-loop feedback control machining system, the system comprising:

  • a machine comprising;

    a workpiece holder;

    a tool holder;

    a spindle drive system for providing relative rotation between a workpiece and a tool; and

    a feed drive system for providing relative translational movement between a workpiece and a tool;

    a tool;

    at least one sensor operatively associated with the tool;

    at least one signal converter operatively associated with the at least one sensor;

    at least one signal analyzer operatively associated with the at least one signal converter; and

    at least one controller operatively associated with the at least one signal analyzer and operatively associated with the spindle drive system and the feed drive system, wherein the at least one sensor receives a signal from the tool and transmits the signal to the at least one signal converter, wherein the at least one signal converter converts the received signal to a set of digital parameters and transmits the digital parameters to the at least one signal analyzer, wherein the at least one signal analyzer determines in real-time at least one of the elements selected from the group consisting of;

    the force on the tool, the deflection of the tool, and the vibration of the tool, and wherein the at least one controller adjusts the power exerted by at least one of the spindle drive system and the feed drive system in real-time based on the real-time determinations.

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