荷重検知形据付具による円筒研削盤の据付調整

支持荷重と動剛性の関係

抄録

When installing machine tools, additional stiffness supplied by foundations as well as levelling is one of the important factors which should be considered. In most cases, however, the installing operation has been usually conducted by skilled operators who can adjust loads exerted on mounting elements from experiences. In the present paper, firstly, a new type of load-sensible mounting element has been developed for practical use. Secondly, by applying the mounting elements to an existing cylindrical grinding machine, the relation between the loads at eleven mounting positions and dynamic stiffness of the machine has been investigated experimentally. In this investigation, a performance index of the dynamic stiffness has been introduced taking into consideration its influence on grinding accuracy. As the result, three mounting positions sensitive to the dynamic stiffness have been found. It has been also confirmed that difference in levelling of the machine has little influence on the dynamic stiffness.