Design of a six-degree-of-freedom geometric errors measurement system for a rotary axis of a machine tool

Chien Sheng Liu, Hung Chuan Hsu, Yu Xiang Lin

Research output: Contribution to journalArticle

Abstract

This paper proposes a new kind of non-contact optical measurement system, which combines with a polygon mirror and a conical lens to achieve the purpose of simultaneously measuring six-degree-of-freedom (6 DOF) geometric errors for a rotary axis of a machine tool. At the beginning, we used the Zemax software to construct the proposed optical structure and observe the change of light spots on the detectors. Then, we built the proposed optical structure on the Matlab software by using the skew-ray tracing method, which used to present the actual condition of light spot change and compare with the simulation results. Then, we designed the appropriate fixtures to place the system structure on a rotary axis in a laboratory environment. After completing the laboratory-built prototype, we analyzed the effects of different geometric errors on the detectors at different angular positions of a rotary axis of a machine tool. The proposed measurement system simultaneously measured 6 DOF geometric errors of the rotary axis, and the experimental results were compared with those of two dial gauges by using the measurement method of ISO 230–7. The experimental results show that the maximum deviation ranges of the radial motion error in X axis, the radial motion error in Y axis, the tilt motion error around X, and the tilt motion error around Y are ±4.7 µm, ±6.0 µm, ±3.6 arcsec, and ±8.1 arcsec, respectively.

Original languageEnglish
Article number105949
JournalOptics and Lasers in Engineering
Volume127
DOIs
Publication statusPublished - 2020 Apr

Fingerprint

machine tools
Measurement errors
Machine tools
degrees of freedom
Instrument dials
Detectors
computer programs
dials
fixtures
polygons
detectors
Ray tracing
optical measurement
ray tracing
Gages
Lenses
Mirrors
lenses
prototypes
mirrors

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Mechanical Engineering
  • Electrical and Electronic Engineering

Cite this

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Design of a six-degree-of-freedom geometric errors measurement system for a rotary axis of a machine tool. / Liu, Chien Sheng; Hsu, Hung Chuan; Lin, Yu Xiang.

In: Optics and Lasers in Engineering, Vol. 127, 105949, 04.2020.

Research output: Contribution to journalArticle

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