Composite Concrete Bed for CNC Machine Tool

As the operation speeds of CNC machine tools are increased, the vibration problem has become a major constraint of manufacturing of precision products. The two important functional requirements of CNC machine tool bed are high structural stiffness and high damping. Conventional metallic materials used for bed structure have high stiffness but low damping. Epoxy concrete materials used for bed structure can satisfy above requirements but their costs are expensive. This paper presents the application of composite concrete bed for CNC machine tool, which is composed of epoxy concrete structure faces and steel fiber cement concrete core. The beds not only satisfy above requirements of CNC machine tool bed but also their costs are lower.