On-machine profile measurement of machined surface using the combined three-point method

Wei Gao, Satoshi Kiyono

Research output: Contribution to journalArticlepeer-review

60 Citations (Scopus)


The combined 3-point method, which combines the generalized 3-point method with the sequential 3-point method, is described in the present paper. The combined 3-point method can not only measure profiles that include high-frequency components whose spatial wavelengths are shorter than the probe distance, but also cancel the influence of the z-directional error and the pitching error in the scanning motion. In the combined 3-point method, some data points from a profile evaluated by the generalized 3-point method are chosen as reference points of the standard area and are used to determine the relative heights among the data groups of the sequential 3-point method. An automatic selection method was used to select the standard area correctly and quickly. Theoretical analyses and computer simulations were performed to confirm the effectiveness of the combined 3-point method. Experimental profile measurements were also carried out using three capacitance-type displacement probes.

Original languageEnglish
Pages (from-to)253-259
Number of pages7
JournalJSME International Journal, Series C: Dynamics, Control, Robotics, Design and Manufacturing
Issue number2
Publication statusPublished - 1997 Jun


  • 3-Point Method
  • Combined Method
  • Machine Tool
  • Measurement
  • Profile Measurement
  • Scanning Method
  • Sensor
  • Software Datum
  • Stability


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