To solve the problem of online automatic balance control of machine tool spindle,the balanc-ing methods and the automatic balancing technologies were discussed in this paper,and then an online automatic balance mechanism based on hydrojet-typed mass compensation principle was proposed. The feasibility of this balancing device was verified on a motorized spindle,and the empirical results validated the effectiveness of this mechanism.% 针对机床主轴在线自动平衡控制问题,阐述了高速主轴不平衡识别方法和在线自动平衡技术国内外现状,分析了喷液式在线自动平衡装置原理,设计了喷液式平衡系统,并通过高速主轴实验对该系统的有效性进行了验证.研究结果表明,主轴经过平衡后,不平衡量振动值由1.60 mm/s降至0.34 mm/s,主轴失衡振动得到了有效抑制.
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