本文从研究金属切削刃前区的应力状态入手,人为地改变这种应力状态,进行“应力切削”,达到由应力实现分离被加工材料的目的。本方法的切削效果近似于楔角为零度的理想刀具的切削;且对材质无任何影响,符合下料工序的要求。文中对这种方法的理论依据及其应用进行了工程实践,结果表明,这种方法不仅可行,而且具有高效率和低能耗的潜在优势。 This paper starts from studying the stress state in the front region of the metal cutting edge, artificially changing the state of stress and “stress cutting” to achieve the purpose of separating the materials to be processed by the stress. The cutting effect of this method is similar to the cutting of the ideal tool with a wedge angle of zero degrees, and has no influence on the material and meets the requirements of the cutting process. The theoretical basis and application of this method have been studied in this paper. The results show that this method is not only feasible, but also has the potential advantages of high efficiency and low energy consumption.