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针对三维切削再生颤振的重叠系数与等效切宽的现行确定方法存在的问题，提出新的确定方法，给出几种典型切削方式下三种确定方法的结果并进行了比较．新方法避免了现行方法存在的缺陷．
Aiming at the problems existing in the existing methods for determining the overlap coefficient and the equivalent width of regenerative chatter in 3D cutting, a new method of determination is proposed. The results of three kinds of determination methods under several typical cutting modes are given and compared. The new method avoids the shortcomings of the current method.