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(<小特集>生産加工・工作機械の規範2008)

概要

論文の詳細を見る
In the metal cutting, a mechanical energy is transformed into the heat. The heat flows into workpiece, chip and tool. It will cause the thermal expansion. After the machining, the workpiece temperature decreases to normal temperature and then the residual stress is induced within the machined layer. The residual stress causes distortion of the machined components. In addition the tensile residual stress degrades the fatigue strength. Thus, it is important to quantitatively elucidate the correlation between the residual stress field and the 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 in the workpiece during a sequential cutting process are predicted by FEM analysis. Especially, the effect of the time interval between two successive cuttings and the effect of cutting conditions on the residual stress field of the workpiece was investigated.
社団法人日本機械学会の論文
2009-09-25