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Appl. Sci. 2018, 8(1), 15; https://doi.org/10.3390/app8010015

Measurement of Static Stiffness after Motion on a Three-Axis CNC Milling Table

1
Department of Manufacturing Machinery, Faculty of Mechanical Engineering, The Technical University of Kosice, Letná 9, 04001 Košice, Slovakia
2
Department of Biomedical Engineering and Measurement, Faculty of Mechanical Engineering, The Technical University of Kosice, Letná 9, 04001 Košice, Slovakia
3
Prototype and Innovation Centre, Faculty of Mechanical Engineering, The Technical University of Kosice, Letná 9, 04001 Košice, Slovakia
*
Author to whom correspondence should be addressed.
Received: 15 November 2017 / Revised: 5 December 2017 / Accepted: 11 December 2017 / Published: 23 December 2017
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Abstract

This paper deals with a modified methodology for measuring the static stiffness of the machine tool. Inspiration to modify the commonly used expanded method of static stiffness measurement resulted from considerably different experimentally measured static stiffness values in the simulated process of load application under laboratory conditions compared to the standard method. An important takeaway from the measurements is that the measured static stiffness of the table depends greatly on the previous work performed thereon and on the method of the load application onto the table. This modified view of the static stiffness of the machine can have an impact on the increased emphasis on eliminating the phenomena related thereto. It is applicable in engineering practice, in particular in the field of machine tool design, where it will ensure higher machining precision under comparable conditions. In the experiments performed, deformations and displacements were measured with a laser interferometer. View Full-Text
Keywords: machine tool stiffness; static stiffness; CNC (Computer Numerical Control); machine tool; laser interferometer machine tool stiffness; static stiffness; CNC (Computer Numerical Control); machine tool; laser interferometer
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Stejskal, T.; Svetlík, J.; Dovica, M.; Demeč, P.; Kráľ, J. Measurement of Static Stiffness after Motion on a Three-Axis CNC Milling Table. Appl. Sci. 2018, 8, 15.

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