Thermal stiffness of bearing system of metal-cutting machine
The quality assessment of metal-cutting machine tool on accuracy parameters, determined by sum of measurement units of certain structure properties, is considered. The definition of machine tool structure resistance to thermal action on assessment of specimen material thermal properties does not give valid information, therefore the measurement unit, based on analysis of structure movement under thermal forces action, is developed. This unit allows to obtain "thermal stiffness" parameter of a structure.