抄録
Dynamic characteristics of guideways influence on not only motion accuracy of feed drives but also stability of regenerative chatter vibration which deteriorates productive efficiency of machine tools. This paper describes the influence of the frictional hysteretic behavior in pre-rolling region on dynamic characteristics of the rolling guideway which is widely used in machine tools. The numerical analysis by using the friction model is conducted. The simple friction model based on Masing rule is constructed to identify the inherent factor which affects to the dynamic characteristics of the rolling guideway. The hysteretic behavior generates the harmonic and super harmonic resonances in the frequency response, and causes the excitation force dependency of the frequency response. The tendency of this excitation force dependency varies only with the change rate of friction in the pre-rolling region. If the change rate of friction was large, the harmonic resonance frequency would be high. Also the compliance at the harmonic resonance increases monotony in accordance with increasing the excitation force amplitude. Finally, the experiment with the roller guideway is conducted to prove the validity of the numerical analysis.
