切削颤振的线性和非线性理论研究

振动是金属切削加工过程中经常遇到的一种现象,也是影响零件加工质量和限制生产率提高的主要因素之一。本文在切削机理研究基础之上,从系统结构的参数特性出发,讨论了颤振的线性理论和非线性理论,并列举了线性理论的局限性。此外,还通过机械学和热力学两个子系统来说明金属切削的非线性现象,从而有助于人们更好地理解机床颤振的理论。

Study on Linear and Nonlinear Theories in Chatter of Machining System

The vibration is one of the phenomena in the metal machining process,which also is one of primary factors that affect the processing quality and limits the productivity enhances.This paper discusses the linear and the nonlinear theories from the system structure parameter characteristic,which bases on the cutting mechanism.And this paper enumerates the limitation of linear theory.Moreover,this paper explains the nonlinear phenomenon through two subsystems of mechanics and the thermodynamics.Thus it is helpful to understood the theory of chatter