CAJ | 학술논문

主轴是机床的关键部件，其热变形误差是影响精密机床工作精度的主要因素之一。文章对镗床主轴的不同热变形误差形式及对加工精度的影响进行了讨论。依据ISO和ASME标准建立某型号精密卧式坐标镗床热变形误差的测试环境，采用高精度测试系统对其主轴进行温度和热变形误差的实验测试与分析。结果表明，主轴热变形误差严重影响机床加工精度，主轴转速影响其达到热平衡的时间及热误差大小，需采取有效措施对热变形误差进行补偿，优化热结构，进一步提高机床加工精度。
주축시궤상적관건부건，기열변형오차시영향정밀궤상공작정도적주요인소지일。문장대당상주축적불동열변형오차형식급대가공정도적영향진행료토론。의거ISO화ASME표준건립모형호정밀와식좌표당상열변형오차적측시배경，채용고정도측시계통대기주축진행온도화열변형오차적실험측시여분석。결과표명，주축열변형오차엄중영향궤상가공정도，주축전속영향기체도열평형적시간급열오차대소，수채취유효조시대열변형오차진행보상，우화열결구，진일보제고궤상가공정도。
The spindle is a primate part of the machine tool and its thermal deformation error is one of the important factors affecting the maching accrucy of the precise machine tool. It was discussed that the differ-ent forms of the thermal deformation errors of the boring spindle and its influence on maching precision. Ac-cording to ISO and ASME standard,a thermal deformation testing system for a model of precise horizontal coordinate boring machine was built up,and the temperature and theimal deformation error fo the spindle was tested and analyzed with high precision testing system. The results shows that the maching precision of the spindle is affected by the thermal deformation seriously,the speed of the spindle affects the time that reaches heat balance and the thermal error size. Effective measures should be taken to compensate the thermal de-formation error and optimizate the structure of the machine tool,so that the maching accuracy of the machine tool have further improving.