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

Applied Sciences

Miroslav Dovica¹  Tomáš Stejskal²  Jozef Svetlík²  Peter Demeč²  Ján Kráľ³ 

[1] Department of Biomedical Engineering and Measurement, Faculty of Mechanical Engineering, The Technical University of Kosice, Letná 9, 04001 Košice, Slovakia;Department of Manufacturing Machinery, Faculty of Mechanical Engineering, The Technical University of Kosice, Letná 9, 04001 Košice, Slovakia;Prototype and Innovation Centre, Faculty of Mechanical Engineering, The Technical University of Kosice, Letná 9, 04001 Košice, Slovakia;

关键词: machine tool stiffness;    static stiffness;    CNC (Computer Numerical Control);    machine tool;    laser interferometer;   

DOI  :  10.3390/app8010015

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown