本文首先将内孔拉削系统简化为单自由度系统，给出其振动的数学模型并对其进行运算和处理。
In this article the broaching internal round hole system is simplified to the single-freedom system. Themathematicsmode of vibration is given, calculated and dealt with.
对厚壁件内孔拉削精度进行了试验研究，结果表明：刀具初期磨损阶段，工件孔径尺寸偏大，且变化较快；
Experimental study of broaching precision of heavy wall workpiece shows that workpiece aperture turns large in initiative wearing stage of the tool, and the change is fast;
本文首先将内孔拉削系统简化为单自由度系统，给出其振动的数学模型并对其进行运算和处理。
In this article the broaching internal round hole system is simplified to the single-freedom system.
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