热的影响能使数控机床的加工精度变坏。所产生的热影响到测量系统和机床。作者对用步进电机作进给驱动的转塔车床丝杆的精度损失进行过试验。本文讨论了在带直线测量系统的 jigmill 机床上热对精度的影响。叙述了热变形的不同原因和改进的办法。本文还研究了床身与热切屑之间的热传递和用一层冷的切屑进行绝缘的问题。 Thermal effects can deteriorate the machining accuracy of CNC machine tools. The heat generated affects the measuring system and the machine. The authors have tested the loss of accuracy of a turret lathe screw driven by a stepping motor. This article discusses the effect of heat on accuracy on a jigmill machine with a straight line measurement system. Describes the different causes of thermal deformation and improved methods. The paper also studied the heat transfer between the bed and the hot chip and the problem of insulation with a layer of cold chip.