振动与冲击
振動與遲擊
진동여충격
JOURNAL OF VIBRATION AND SHOCK
2015年
17期
1-5
,共5页
高速电主轴%磁流变液%动态加载实验
高速電主軸%磁流變液%動態加載實驗
고속전주축%자류변액%동태가재실험
high speed motorized spindle%MRF%dynamic loading test
为有效预测高速电主轴的寿命并评价其精度保持性，需要对高速状态下的电主轴进行动态加载测试。应用磁流变液对电主轴进行动态加载并进行加载性能测试。介绍该加载系统的构成与原理，并通过电磁仿真与实验，获取力矩－电流、力矩－时间变化规律，探讨高速下磁流变液的剪切模型，并对原始公式予以修正。理论计算与实验结果表明修正模型及分析流程具有一定精度，说明磁流变液的粘度和剪切屈服应力会随转速、电流的改变而变化，也验证该加载系统的正确性和可行性，为高速电主轴的动态加载性能研究提出了一种全新的方法。
為有效預測高速電主軸的壽命併評價其精度保持性，需要對高速狀態下的電主軸進行動態加載測試。應用磁流變液對電主軸進行動態加載併進行加載性能測試。介紹該加載繫統的構成與原理，併通過電磁倣真與實驗，穫取力矩－電流、力矩－時間變化規律，探討高速下磁流變液的剪切模型，併對原始公式予以脩正。理論計算與實驗結果錶明脩正模型及分析流程具有一定精度，說明磁流變液的粘度和剪切屈服應力會隨轉速、電流的改變而變化，也驗證該加載繫統的正確性和可行性，為高速電主軸的動態加載性能研究提齣瞭一種全新的方法。
위유효예측고속전주축적수명병평개기정도보지성，수요대고속상태하적전주축진행동태가재측시。응용자류변액대전주축진행동태가재병진행가재성능측시。개소해가재계통적구성여원리，병통과전자방진여실험，획취력구－전류、력구－시간변화규률，탐토고속하자류변액적전절모형，병대원시공식여이수정。이론계산여실험결과표명수정모형급분석류정구유일정정도，설명자류변액적점도화전절굴복응력회수전속、전류적개변이변화，야험증해가재계통적정학성화가행성，위고속전주축적동태가재성능연구제출료일충전신적방법。
To effectively predict the life of a high speed motorized spindle and assess its precision retaining ability, dynamic loading tests should be done for the spindle with high speed.Due to the motorized spindle with high speed, loading tests are very hard to carry out. Here, dynamic loading tests for the spindle were proposed using magnetorheological fluid (MRF).The structure and loading principle of the loading system were described.Through electromagnetic simulations and tests,the current versus torque rule and the current versus time rule were obtained.The shear stress model of MRF under high speed was studied and the original formula was modified.The theoretical calculations and test results indicated that the proposed model is capable of accurately predicting the torque;the viscosity and shear yield stress of MRF vary with speed and current.The correctness and feasibility of this loading system were verified,and a new method for the dynamic loading tests of high speed motorized spindles was proposed.
