本文選題：角接觸球軸承 + 高速電主軸　； 參考：《北京工業(yè)大學學報》2015年06期

【摘要】：為了有效預測并控制高速電主軸的支撐剛度和臨界轉(zhuǎn)速,建立了角接觸球軸承在混合預緊機理下的數(shù)值計算模型,對主軸系統(tǒng)進行有限元建模,耦合軸承組模型與轉(zhuǎn)軸模型構(gòu)成轉(zhuǎn)軸-軸承模型.通過對整體模型計算獲得主軸系統(tǒng)的動態(tài)特性參數(shù),將結(jié)果反代入整體模型,進而進行循環(huán)迭代,從而研究主軸渦動頻率.制定轉(zhuǎn)軸-軸承模型動力學計算流程,研究了電主軸在不同工況下軸承支撐剛度和渦動頻率等動態(tài)特性.理論計算結(jié)果表明:與傳統(tǒng)計算方法相比,所建模型計算電主軸在高速運轉(zhuǎn)時的動態(tài)特性具有更高精度.采用合理的預緊方式和預緊力有利于提高主軸系統(tǒng)在高速運轉(zhuǎn)時的臨界頻率.
[Abstract]:In order to effectively predict and control the support stiffness and critical speed of high speed motorized spindle, a numerical model of angular contact ball bearing under mixed preloading mechanism was established, and the finite element model of spindle system was established. The coupling bearing group model and the rotary shaft model constitute the rotary shaft-bearing model. The dynamic characteristic parameters of the spindle system are obtained by calculating the whole model, and the results are reversed into the global model, and then the cycle iteration is carried out to study the swirl frequency of the spindle. The dynamic calculation flow of rotary shaft-bearing model was established and the dynamic characteristics of bearing support stiffness and vortex frequency of motorized spindle under different working conditions were studied. The theoretical results show that compared with the traditional calculation method, the model has higher accuracy in calculating the dynamic characteristics of motorized spindle at high speed. Using reasonable preload and preloading force can improve the critical frequency of spindle system at high speed.
【作者單位】： 北京工業(yè)大學機械工程與應用電子技術(shù)學院;中國兵器工業(yè)第二八研究所;
【基金】：國家“863”計劃資助項目(SS2012AA040702) 科技重大專項(2011ZX04016-011)
【分類號】：TG659

【參考文獻】

相關(guān)期刊論文 前1條

1 蔡力鋼;馬仕明;趙永勝;劉志峰;楊文通;;多約束狀態(tài)下重載機械式主軸有限元建模及模態(tài)分析[J];機械工程學報;2012年03期

【共引文獻】

相關(guān)期刊論文 前10條

1 黎飛龍;吳寶勤;李光輝;;某小型渦扇發(fā)動機轉(zhuǎn)子高速動平衡試驗[J];兵工自動化;2010年06期

2 游宇;何立東;王維民;沈偉;;多功能旋轉(zhuǎn)機械故障自愈調(diào)控實驗臺[J];北京化工大學學報(自然科學版);2006年01期

3 姜志勇;黨杰;張愛軍;吳玉龍;，

本文編號：1976044