线性飞刀切削力学模型建立

The Cutting Force Model for Linear Fly Cutting Process

提出了类似滚齿加工的线性飞刀切削加工方法并对其加工过程力学模型进行建立。首先对线性飞刀切削加工过程进行描述,分析了线性飞刀瞬时切削层特性,重点论述了刀齿顶刃瞬时切削厚度;其次以机械力学模型为基础,构建切削微元力学模型;然后将切削层进行微元划分,推导出飞刀切削瞬时切削力学模型;最后在整个切削范围进行积分求出平均切削力模型。该模型的建立,为滚齿力以及切削机理的研究奠定基础。

The linear fly cutting process similar to hobbing process was proposed and its force model was established.Firstly,the linear fly cutting process was described and the characteristics of undeformed chip were analyzed and the transient cutting thickness of top edge of the tooth was discussed;secondly,based on the mechanics model,the force model of cutting element was constructed; thirdly,after dividing the undeformed chip into element,the instantaneous cutting force model for fly cutting process was established; finally,the average cutting force model was obtained by integrating in the entire range.The model established will lay the foundation for the research of the cutting forceand cutting mechanismin gear hobbing.