Comparison Between the Thermically Caused Deformations of a Cast Iron and a Concrete Lathered

Abstract

In connection with the development of modern machine tools several machine tool producers have recently used and recommended concrete elements as a way of increasing dynamic and particularly thermical stiffness. Up to now, however, there have only been made verbal and qualitative assessments as to their advantages. The present paper discusses experimental results obtained from comparing the thermical deformations of lathe beds made of different materials, all other conditions being equal. In the case of concrete the thermical inertia is increasing and deformation amplitudes have proved to be smaller.