Measurement of the Angular Errors of a Multi-Axis Machine Tool by Using A Novel Optical Rotary-Axis Calibrator [新型光學式多軸工具機旋轉軸角度定位誤差量測系統]
Journal
Journal of the Chinese Society of Mechanical Engineers, Transactions of the Chinese Institute of Engineers, Series C/Chung-Kuo Chi Hsueh Kung Ch'eng Hsuebo Pao
Journal Volume
40
Journal Issue
1
Pages
55
Date Issued
2019
Author(s)
Abstract
Based on the theory of laser measurement, this work presents a novel optical rotary-axis angular errors calibrator to measure the angular positioning errors of a multi-axis machine tool. The proposed calibrator integrates a laser-based angular measuring system and a high accuracy rotary stage. The control method of the optical rotary-axis angular errors calibrator is based on autofocusing technology. Additionally, based on the quadrant detector (QD) of the laser-based angular measuring system, the angular positioning signal is detected from the indexing table. Moreover, an angular position for autofocusing the laser spot at QD is provided using the high accuracy rotary stage. The proposed optical rotary-axis angular errors calibrator is verified using commercial instrument autocollimator and laser interferometer. Experimental results indicate that the proposed optical rotary-axis angular errors calibrator detects the angular positioning with an accuracy of approximately ±1 arcsec. Furthermore, the angular accuracy of a multi-axis machine tool can be adjusted within ±1 arcsec, based on the indexing resolution of 0.0001°. ? 2019, Chinese Mechanical Engineering Society. All right reserved.
Subjects
Automatic indexing
Indexing (of information)
Interferometers
Laser interferometry
Laser theory
Machine tools
Angular positioning
Angular positions
Commercial instruments
Laser interferometer
Laser measurements
Measuring systems
Multi-axis machine tool
Quadrant detectors
Instrument errors
Type
journal article