2021 年 87 巻 5 号 p. 455-460
The purpose of this research is to elucidate the dynamic characteristics of linear motion ball guide (LMBG) and to propose effective analysis methods. First, we will explain how to apply translational and rotating vibration models to the load distribution theory, which is a static analysis method of LMBG. Next, we will introduce an example of analysis of time history response and frequency response using LMBG dynamic simulation. In order to verify the theory, we conducted an experiment to intentionally excite the vibration modes in three directions of vertical, rolling, and pitching, and compared the theoretical value and the measured value for the natural frequency of each mode. We also considered the effects of differences in the mass of the load and the preload amount of LMBG on the natural frequency of each mode. It was confirmed that the theoretical values obtained by the LMBG dynamic simulation showed the same tendency as the measured values, and were quantitatively almost the same.
