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建立了新的拉削振动的动力学模型，推导出振动位移的数学表达式，得出了拉削振动的基本规律，为拉刀设计提供了理论依据。
A new kinetic model of broaching vibration is established, the mathematical expression of vibration displacement is deduced, and the basic law of broaching vibration is obtained, which provides a theoretical basis for broach design.