Abstract
This paper deals with the command of temperature control of machine tools. Customarily the fixed value control of the spindle head's temperature has been adopted for the machine tools found specially in the fixed room temperature. And follow-up controls to the room temperature and to the machine temperature have been widely used for the machine tools in the conventional machine shop. However the theoretical analysis has not been conducted concerning the command temperature. Computer simulations and cost-performance analysis have been conducted, and the following results are obtained : (1) For high quality machine tools in the conventional machine shop the tempera- tures of the spindle head and of the bed should be follow-up con-trolled to the room temperature. (2) For economical machine tools the follow-up control of the spindle head temperature to the machine temperature is very effective.
