A method of predicting the best conditions for large-size workpiece clamping to reduce vibration in the face milling process

Krzysztof J Kaliński; Natalia Stawicka-Morawska; Marek A Galewski; Michał R Mazur

doi:10.1038/s41598-021-00128-6

A method of predicting the best conditions for large-size workpiece clamping to reduce vibration in the face milling process

Sci Rep. 2021 Oct 21;11(1):20773. doi: 10.1038/s41598-021-00128-6.

Authors

Krzysztof J Kaliński¹, Natalia Stawicka-Morawska², Marek A Galewski¹, Michał R Mazur¹

Affiliations

¹ Faculty of Mechanical Engineering and Ship Technology, Institute of Mechanics and Machine Design, Gdansk University of Technology, 80-233, Gdansk, Poland.
² Faculty of Mechanical Engineering and Ship Technology, Institute of Mechanics and Machine Design, Gdansk University of Technology, 80-233, Gdansk, Poland. natalia.morawska@pg.edu.pl.

Abstract

The paper presents an innovative method of solving the problem of vibration suppression during milling of large-size details. It consists in searching for the best conditions for clamping the workpiece based on a rapid modal identification of the dominant natural frequencies only and requires repetitive changes in the tightening torque of the clamping screws. Then, by estimating the minimum work of the cutting forces acting in the direction of the width of the cutting layer, it is possible to predict the best fixing of the workpiece. Application of the method does not require the creation and identification of a computational model of the process or preliminary numerical simulations. The effectiveness of this method was confirmed by the evaluation of the Root Mean Square (RMS) of the vibration level in the time domain observed during the actual face milling process. The worst results were obtained for the configuration of supports tightened with a torque of 90-110 Nm, and the best-with a torque of 50 Nm.

Abstract

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