Development of Accuracy Evaluation Method for Open Loop Educational CNC Milling Machine

Authors

DOI:

https://doi.org/10.21776/ub.jrm.2021.012.01.23

Keywords:

Educational, CNC Milling Machine, Accuracy Verification, Fringe Counting, He-Ne Laser, Interferometry

Abstract

The open-loop educational computer numerical control (CNC) milling machine requires accuracy verification in order to ensure its accuracy and functionality. In this paper, the new verification method is proposed based on the length measurement using the fringe counting of He-Ne laser interferometry. The ideal translation length is defined by the number of electric pulses generated by the micro-stepping driver, while the actual length is measured using He-Ne laser interferometry. In the experimental process, the data of the fringe pattern of the He-Ne laser and the number of electric pulses which drive the stepper motors were simultaneously acquired using an oscilloscope. Hence, the data has been analyzed to obtain the ideal and actual lengths by using an in-house program developed in Python. By comparing the actual translation and ideal length, the accuracy of the educational CNC milling machine has been evaluated to be 50 µm for the length up to 200 mm.

Author Biography

Agustinus Winarno, Universitas Gadjah Mada

Agustinus Winarno is a lecturer at Department of Mechanical Engineering, Vocational College, Universitas Gadjah mada. He received adoctoral’s degree in precisiong engineering from the University of Tokyo, Japan. His current field placement is with Universitas Gadjah Mada

References

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Published

2021-05-31

How to Cite

Winarno, A., Lasiyah, S., Tulung Prayoga, B., Aris Hendaryanto, I., & Sukidjo, F. X. (2021). Development of Accuracy Evaluation Method for Open Loop Educational CNC Milling Machine. Jurnal Rekayasa Mesin, 12(1), pp. 217–225. https://doi.org/10.21776/ub.jrm.2021.012.01.23

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Articles