Generation Mechanism of Work Hardened Surface Layer in Metal Cutting
Generation Mechanism of Work Hardened Surface Layer in Metal Cutting
复制标题
金属切削加工硬化表面层的生成机制
DOI：
10.1299/jsmec.47.405
复制
发表时间：
2004
期刊：
影响因子：
--
通讯作者：
M. Arai
中科院分区：
文献类型：
--
作者：
R. Hikiji;E. Kondo;N. Kawagoishi;M. Arai
精加工过去在磨削中进行，但正在被未变形切屑厚度非常小的切削所取代。在超精密加工中，切削条件的影响和复杂因素对加工表面完整性的影响是严重的问题。在本研究中，处理加工硬化表面层作为加工表面完整性的评估，并在正交切削中通过实验研究了机械因素对加工硬化的影响。结果发现，加工硬化表面层不仅受到切削条件下变化的剪切角和切削阻力的推力的影响，而且还受到推力作用点、推力系数和相当于体积硬度的压应力的影响。此外，还利用计算模型研究了这些机械因素对加工硬化表面层深度的影响。
Finish machining used to be carried out in grinding, but it is being replaced by cutting with very small undeformed chip thickness. In ultra precision process, the effects of the cutting conditions and the complicated factors on the machined surface integrity are the serious problems. In this research, work hardened surface layer was dealt with as an evaluation of the machined surface integrity and the effect of the mechanical factors on work hardening was investigated experimentally in orthogonal cutting. As a result, it was found that work hardened surface layer was affected not only by the shear angle varied under the cutting conditions and the thrust force of cutting resistance, but also by the thrust force acting point, the coefficient of the thrust force and the compressive stress equivalent to the bulk hardness. Furthermore, these mechanical factors acting on the depth of the work hardened surface layer were investigated with the calculation model.