本文選題：高速 + 陶瓷電主軸�。� 參考：《精密制造與自動化》2016年04期

【摘要】：利用高速陶瓷電主軸熱穩(wěn)態(tài)和熱瞬態(tài)的熱力學(xué)模型,研究了熱態(tài)性能對零件加工精度的影響,結(jié)合某高速精密加工中心的主軸單元,用有限元計(jì)算和分析了溫度場及熱平衡時間,將結(jié)果與實(shí)驗(yàn)進(jìn)行比較,證明其有效性。結(jié)果表明:高速陶瓷電主軸在運(yùn)轉(zhuǎn)時熱量主要來源于內(nèi)置電機(jī)的損耗發(fā)熱和軸承摩擦生熱。前后軸承、定子和轉(zhuǎn)子是熱量集中處,最高溫度出現(xiàn)在轉(zhuǎn)子與定子間間隙處,為62.23℃,需采用良好的散熱措施進(jìn)行散熱;精密磨削加工前應(yīng)提前啟動機(jī)床,進(jìn)行10 min的預(yù)熱,使機(jī)床各部件達(dá)到熱平衡,減少熱變形帶來的加工誤差,提高加工質(zhì)量。該建模方法以及熱力學(xué)模型可為高速電主軸的優(yōu)化設(shè)計(jì)和研制提供一定的參考。
[Abstract]:Based on the thermodynamics model of thermal stability and thermal transient of high speed ceramic spindle, the influence of thermal properties on machining accuracy of parts is studied, and the spindle unit of a high speed precision machining center is combined. The temperature field and the thermal equilibrium time are calculated and analyzed by finite element method, and the results are compared with the experimental results to prove its validity. The results show that the heat of high speed ceramic spindle is mainly from the loss and heat of internal motor and friction heat of bearing. Before and after bearing, stator and rotor are heat concentration, the highest temperature appears in the gap between rotor and stator, it is 62.23 鈩，

本文編號：1816812