Assessment of Positional Error CNC Machine Tools using Laser Interferometer

Herman Budi Harja, Addonis Candra

2021

Abstract

The geometric error of machine tools significantly contributes to the machined workpiece’s dimensional and geometric error. This study aims to show a method for assessment of the positional error of the machine axes movement. It is worthwhile since its information outcome could be a reference for obtaining error compensation parameters of machine tools and G-code program correction nowadays. Data collection of positional error was conducted by measuring method using a laser interferometer based on ISO 230-2 as a measurement standard of positioning accuracy and repeatability. The positional error parameters are analysed for getting mean deviation, systematic position deviation, repeatability, and accuracy. Then, machine tools’ assessment status is obtained by comparing measurement results with ISO 10791-4 tolerance standard. The machine object tested of this study are CNC machine tools with a measurement distance travelled of X, Y and Z-axis are about 500 mm, 200 mm and 350 mm. Finally, the linear positional errors on each machine tools axis could be identified. The X-axis and Z-axis of machine tool exceed the tolerance range of the standard systematic position deviation, because the systematic position deviation value occurred on X, Y and Z axes are approximately 31.8 μm, 12.9 μm and 33.3 μm. The X and Z machine axes are out of tolerance in accuracy standard because the accuracy value in X, Y and Z axes are 34.2 μm, 14.4 μm, and 35.8 μm. And the X, Y and Z axes are still within tolerance in repeatability standards because the X, Y and Z axes repeatability values are 4.2 μm, 33.3 μm and 6.3 μm. The compensation error values of the X and Z axes have been generated based on their linear position errors. It will be further utilized as the main data for setting back error compensation parameters on CNC controller and developing G-Code correction modelling.

Paper Citation

in Harvard Style

Budi Harja H. and Candra A. (2021). Assessment of Positional Error CNC Machine Tools using Laser Interferometer. In Proceedings of the 4th International Conference on Applied Science and Technology on Engineering Science - Volume 1: iCAST-ES, ISBN 978-989-758-615-6, pages 1352-1358. DOI: 10.5220/0010965300003260

in Bibtex Style

@conference{icast-es21,
author={Herman Budi Harja and Addonis Candra},
title={Assessment of Positional Error CNC Machine Tools using Laser Interferometer},
booktitle={Proceedings of the 4th International Conference on Applied Science and Technology on Engineering Science - Volume 1: iCAST-ES,},
year={2021},
pages={1352-1358},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0010965300003260},
isbn={978-989-758-615-6},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 4th International Conference on Applied Science and Technology on Engineering Science - Volume 1: iCAST-ES,
TI - Assessment of Positional Error CNC Machine Tools using Laser Interferometer
SN - 978-989-758-615-6
AU - Budi Harja H.
AU - Candra A.
PY - 2021
SP - 1352
EP - 1358
DO - 10.5220/0010965300003260