Abstract
This papers describes the examination of stiffness, thermal deformation, and cutting performance of a newly developed high-speed spindle holder of machining center. Experimental results show that thermal deformation of the developed high-speed spindle holder was same as a conventional spindle, but that stiffness was low. It is considered that the precision machining of mold models is done by use of the developed spindle on the conventional machine if the overhang of tool is small.
