基于磁流变装置的高速电主轴动态加载系统研究

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摘要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。

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关键词 ：高速电主轴, 磁流变液, 动态加载实验

Abstract：To predict the life of the high speed motorized spindle and assess its precision retaining ability, the spindle system should be loaded with high speed. Due to the high speed of the motorized spindle, the loading experiment is very hard to carry out. A dynamic test on the spindle is proposed with the use of magnetorheological fluid(MRF). The structure and loading principle of the system are described. Through the electromagnetic simulation and experiments, the current-torque rule and the current-time rule are obtained. The shear stress model of MRF under high speed is discussed and the original model is modified. The theoretical calculation and experimental results indicate that the proposed model is capable of accurately predicting the torque, also the viscosity and shear stress of MRF will change with the speed and the current. The correctness and feasibility of this loading method is verified, and a new method to the loading experiment of the high speed motorized spindle is proposed.

Key words： high speed motorized spindle MRF dynamic loading experiment

收稿日期: 2014-05-20 出版日期: 2015-09-15

引用本文:

李培明，陈小安，合烨. 基于磁流变装置的高速电主轴动态加载系统研究[J]. 振动与冲击, 2015, 34(17): 1-5.
LI Peiming CHEN Xiaoan HE Ye. Study On Dynamic Loading of High Speed Motorized Spindle with Magnetorheological Fluid. JOURNAL OF VIBRATION AND SHOCK, 2015, 34(17): 1-5.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2015/V34/I17/1

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