本文選題：電主軸　切入點(diǎn)：溫度場　出處：《沈陽建筑大學(xué)學(xué)報(bào)(自然科學(xué)版)》2017年04期

【摘要】：目的分析170SD30電主軸溫度場分布情況,為提高主軸加工精度提供理論依據(jù).方法建立電主軸數(shù)學(xué)模型及1/4三維幾何模型,實(shí)驗(yàn)驗(yàn)證電主軸模型的可靠性.利用COMSOL軟件模擬電主軸的溫度分布,研究主軸轉(zhuǎn)速、徑向磨削力對電主軸溫升的影響.結(jié)果電主軸的最高溫度出現(xiàn)在后軸承處,溫度為47.7℃;電主軸最低溫度出現(xiàn)在冷卻水水道處,溫度為16.2℃;轉(zhuǎn)子到定子間的空氣溫度迅速遞減;在冷卻液流量達(dá)到0.35 m3/h時(shí),對比電主軸后軸承外表面處溫度的實(shí)驗(yàn)數(shù)據(jù)與模擬數(shù)據(jù),平均溫差為0.25℃,誤差為1.3%.結(jié)論軸承和轉(zhuǎn)子處于高溫區(qū),由于軸承發(fā)熱率大,而后軸承所處位置的結(jié)構(gòu)不利于散熱,導(dǎo)致后軸承溫度最高;由于定、轉(zhuǎn)子間隙的傳熱系數(shù)低,致使轉(zhuǎn)子到定子的溫度急劇降低;轉(zhuǎn)速對后軸承溫升影響最大,而磨削力對前軸承溫升影響最大.
[Abstract]:Objective to analyze the temperature field distribution of 170SD30 motorized spindle and to provide theoretical basis for improving the machining accuracy of spindle. Methods the mathematical model and 1 / 4 3D geometric model of motorized spindle were established. The reliability of the motorized spindle model is verified by experiments. The temperature distribution of the motorized spindle is simulated by COMSOL software, and the influence of spindle speed and radial grinding force on the temperature rise of the motorized spindle is studied. The results show that the maximum temperature of the motorized spindle appears at the back bearing and the temperature is 47.7 鈩，

本文編號：1674498