B13 シーケンシャル切削における熱的状態と残留応力状態の解析的予測(OS-6 切削加工(2))

概要

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In metal cutting, mechanical energy is transformed into the heat. The heat flows into workpiece, chip and tool. It will cause the thermal expansion. After machining, the workpiece temperature cools to normal temperature and gets machining errors which is called residual stress caused by thermal expansion. Thus, it is important to quantitatively elucidate the correlation between residual stress field and machining errors. In this paper, a thermal-elastic-plastic model was developed to determine the thermal energy flowing into workpiece, chip and tool. The residual stress distributions of the workpiece during sequential cutting process were predicted by FEM analysis. Especially, the effect of the time interval between two cuttings on the residual stress field of the workpiece was investigated.
社団法人日本機械学会の論文
2008-11-21