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Method for monitoring cutting tool wear during a machining operation

  • US 4,744,242 A
  • Filed: 09/16/1986
  • Issued: 05/17/1988
  • Est. Priority Date: 09/16/1986
  • Status: Expired due to Term
First Claim
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1. A method for detecting wear of a cutting tool used for machining a workpiece, comprising:

  • sensing vibrational frequencies of said cutting tool during machining, wherein frequencies within a range from approximately 2.5 kilohertz (KHz) to at least 20.0 Khz are sensed;

    monitoring the amplitude of individual sensed frequencies within said range, and wherein when the amplitude of any of such frequencies exceeds a certain threshold amplitude said cutting tool is known to be dull; and

    identifying certain types of cutting tool wear by monitoring increases in amplitude of certain specific individual frequencies within said range of frequencies.

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