双刃斜角切削中流屑角的变化规律  

Variation Rules of Chip Flow Angle in Double-Edge Oblique Cutting

作　　者：万珍平[1] 邓文君[1] 汤勇[1] 叶邦彦[1] 

机构地区：[1]华南理工大学机械与汽车工程学院,广东广州510640

出　　处：《华南理工大学学报（自然科学版）》2008年第8期83-87,共5页Journal of South China University of Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(50605023)

摘　　要：流屑角是金属切削过程中的重要特征参数.目前,人们对于前角和刃倾角均不为0°的双刃斜角切削的流屑角尚没有形成统一的认识.文中研究了前角和刃倾角均不为零的双刃斜角切削的流屑角.通过建立切削模型,并根据切削深度和进给量的不同,导出两种不同的模型,系统地研究了前角、安装倾角、刀尖角、进给量和切削深度变化时流屑角的变化规律,并通过实验进行验证.理论预测与实验结果吻合得较好,说明所提出的模型可以用来预测双刃斜角切削的流屑角.Chip flow angle is an important characteristic parameter in the metal cutting process. However, there are no systematic studies on the chip flow angle of the double-edge oblique cutting with nonzero nominal rake and inclination angles. In this paper, a cutting model was established to describe the chip flow angle of double-edge oblique cutting with nonzero nominal rake and inclination angles, and, two derivative models were deduced from the model respectively for the cutting depth and the feed. Then, the rules of the variation of chip flow angle with the nominal rake angle, the fixed angle, the tool-included angle, the cutting depth and the feed were systematically investigated and further verified by experiments. As the theoretical results accord well with the experimental ones, it is concluded that the proposed model is feasible in predicting the chip flow angle of the double-edge oblique cutting.

关 键 词：流屑角 双刃斜角切削 切削模型 切削能 最小能量法 

分 类 号：TG501.1[金属学及工艺—金属切削加工及机床]