Machining, Measurement, and Control Laboratory

A Study on Estimation of the Support Stiffness of Machine Tools
Daisuke Kono, Takahiro Inagaki, Atsushi Matsubara, Iwao Yamaji

The contact stiffness has a large influence on the support stiffness of machine tools. In this paper, the contact stiffness per real contact area of carbon steel is measured in directions perpendicular and parallel to the contact plane. A model of the contact stiffness and a measurement method are described. The measurement result shows that the contact stiffness in the direction parallel to the contact plane is 1/8 of that in the perpendicular direction.