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本文介绍将模尔条纹应力分析法成功地用于单刃刀具切入过程中瞬时应力研究的结果。用透明塑料作刀具对铅进行等温直角刨削。使用了500条线/时的正交十字模尔光栅,用电影机摄影的方法对模尔条纹进行测定。研究结果表明:刀具切入过程中,刀具——切屑之间接触应力的分布状况在它们达到稳定值之前是时刻变化的。但是,刀具前面上拉应力的最大值对于刀尖切入切出时的脆性破坏来说显得非常重要。这一拉应力的峰值出现在切入过程的早期阶段(不超过达到稳定状态时间的20%)。此结果与已经发表的关于切入过程中工件材料瞬时应变的研究报告相一致。
In this paper, the results of applying moire fringe stress analysis to the instantaneous stress research during the single-edged cutting process are introduced. Transparent plastic as a tool for isoplane right-angle shaving of lead. Using 500 lines / hour orthogonal cross-grating grating, the film camera method to measure the moiré stripes. The results show that the distribution of tool-chip contact stress changes momentarily before they reach a steady state during tool plunging. However, the maximum value of the upper tensile stress in front of the tool is very important for the brittle failure of the tip cutting. The peak of this tensile stress occurs at an early stage of the plunge (less than 20% of the time to steady state). This result is consistent with published research reports on the instantaneous strain of workpiece materials during plunging.