Frame member for supporting a workpiece in a machine tool

摘要

A frame member, comprising a pair substantially parallel base members connected by a pair substantially parallel intermediate members extending therebetween, has its base members formed of the same material as the machine bed wherein the material is a cast mineral material comprising a synthetic binder and mineral fillers. It is a particular feature that the base members of the frame member be cast with the machine bed as a unitary structure out of the cast mineral material.