机床受内部、外部热源影响,不仅会引起机床几何精度和部件相对位置的变化,造成机床加工尺寸的不稳定。而且温升过高,也会引起润滑油油质变化,造成轴瓦抱轴或零件加速磨损。因此机械工业部机床工具工业局颁发的“金属切削机床样机试验规范总则(试行稿)—1982”将温升和热变形试验定为除钻床以外所有机床的必试项目之一。 Machine affected by internal and external heat, not only will cause changes in the geometric accuracy of the machine and the relative position of the parts, resulting in instability of the machining size. And the temperature is too high, can also cause changes in oil quality, resulting in shaft bearing or parts accelerated wear and tear. Therefore, the Ministry of Machinery Industry Machine Tool Industry Bureau issued a “metal cutting machine prototype test specifications (Provisional Draft) - 1982” will be temperature and heat deformation test drilling machine for all except one of the must-do items.