Author:
Tran Cao-Sang,Hsieh Tung-Hsien,Jywe Wen-Yuh
Abstract
The angular positioning error of the rotary stage causes low quality in milling various angles of a workpiece. This study proposes a solution that could improve these issues by using our Laser R-test for angular positioning calibration and compensation of the five-axis machine tools in compliance with the simultaneous measurement path of ISO regulations: ISO 10791-6 and ISO 230-2. System uncertainty analysis and calibration were implemented for system prediction. The measurement method proposed in this paper could solve concentricity problems between measurement devices and the rotary table by applying the Cosine theorem with a Cartesian coordinate system. Further, we used the commercial instrument XR20-W (Renishaw, UK) rotary axis calibrator to verify and compare the measured results on a CNC machine tool. The applied system achieves an angular error of 0.0121 degrees for actual workpieces and is smaller than the referring commercial system, which achieves an error of about 0.0022 degrees. The system in this research is useful for five-axis machine tool full calibrations.
Funder
Ministry of Science and Technology of the People's Republic of China
Subject
Fluid Flow and Transfer Processes,Computer Science Applications,Process Chemistry and Technology,General Engineering,Instrumentation,General Materials Science
Reference22 articles.
1. Test Code for Machine Tools—Part 2: Determination of Accuracy and Repeatability of Positioning of Numerically Controlled Axes,2014
2. Non-bar, an optical calibration system for five-axis CNC machine tools
3. Test Conditions for Machining Centres—Part 6: Accuracy of Speeds and Interpolations,2014
4. Self-calibratable rotary encoder
5. New frontiers in angle metrology at the PTB
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