Title:
WORKPIECE DIAMETER MEASUREMENT METHOD AND WORKPIECE CIRCULARITY MEASUREMENT MACHINE
Document Type and Number:
WIPO Patent Application WO/2021/166760
Kind Code:
A1
Abstract:
Provided are a workpiece diameter measurement method and a workpiece circularity measurement machine that can perform diameter measurement of a workpiece having a large diameter without using a masterpiece and a horizontal arm in a long stroke. The present invention includes: a first detection step for, in a state where a probe is in contact with the circumferential surface of a non-calibrated standard from one direction side in a displacement direction of the probe, detecting the position of the probe while relatively rotating the standard and a detector about the rotation center; a second detection step for, in a state where the probe is in contact with the circumferential surface of the standard from another direction side in the displacement direction, detecting the position of the probe while relatively rotating the standard and the detector about the rotation center; a rotation center calculation step for calculating the position of the rotation center on the basis of the position of the probe detected in the first detection step and the second detection step; a third detection step for, in a state where the probe is in contact with a workpiece from the other direction side, relatively rotating the workpiece and the detector about the rotation center; and a diameter calculation step for calculating the diameter of the circumferential surface of the workpiece.
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Inventors:
TOMITA KOSUKE (JP)
TAKANASHI RYO (JP)
TAKANASHI RYO (JP)
Application Number:
PCT/JP2021/004945
Publication Date:
August 26, 2021
Filing Date:
February 10, 2021
Export Citation:
Assignee:
TOKYO SEIMITSU CO LTD (JP)
International Classes:
G01B5/08; G01B5/20
Foreign References:
| JP2012108143A | 2012-06-07 | |||
| JP2017187464A | 2017-10-12 |
Attorney, Agent or Firm:
MATSUURA, Kenzo (JP)
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