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本文对金属切削过程中切削刃前区应力从三方面进行分析；切削过程受力分析；刀尖作用力F2在刃前区中引起的拉应力；裂隙对切削过程的影响。
In this paper, the stress of the cutting edge in the metal cutting process is analyzed from three aspects; the stress analysis of the cutting process; the tensile stress caused by the blade force F2 in the cutting edge zone; the influence of the crack on the cutting process.