Development of Hole Inspection Program using Touch Trigger Probe on CNC Machine Tools

CNC 공작기계 상에서 접촉식 측정 프로브를 이용한 홀 측정 프로그램 개발

  • Lee, Chan-Ho (Dept. of Mechanical Engineering, Chungbuk Nat'l Univ.) ;
  • Lee, Eung-Suk (Dept. of Mechanical Engineering, Chungbuk Nat'l Univ.)
  • 이찬호 (충북대학교 기계공학부) ;
  • 이응석 (충북대학교 기계공학부)
  • Received : 2010.12.20
  • Accepted : 2011.11.22
  • Published : 2012.02.01


According to many customers' requests, optical measurement module (OMM) applications using automatic measuring devices to measure the machined part rapidly on a machine tool have increased steeply. Touch trigger probes are being used for job setup and feature inspection as automatic measuring devices, and this makes quality checking and machining compensation possible. Therefore, in this study, the use of touch trigger probes for accurate measurement of the machined part has been studied and a macro program for a hole measuring cycle has been developed. This hole is the most common feature to be measured, but conventional methods are still not free from measuring error. In addition, the eccentricity change of the least square circle was simulated according to the roundness error in a hole measurement. To evaluate the reliability of this study, the developed hole-measuring program was executed to measure the hole plate on the machine and verify the roundness error in the eccentricity simulation result.


Touch Trigger Probe;Hole-Plate;Roundness Tester;Eccentricity;Least Square Center;Pre-Travel


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