光弾性皮膜法による有円孔アルミニウム材の切削ひずみ挙動解析

概要

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The behavior of cutting strain in a workpiece with a circular hole measured by a photoelastic coating method is described. An aluminum plate (JIS-1070) of 3 mm thickness with a hole of 2 mm diameter coated with birefringence material of 100-100-8 epoxy rubber was observed in orthogonal cutting. High-speed steel (SKH-4) of 300 rake angle was used under dry conditions. In addition, τ_<max> was obtained by applying elastic-plastic FEM. The distribution of τ_<max> around the hole obtained by computation is in good agreement with that obtained experintally by the coating method. The results are as follows. (1) After cutting, a peculiar strain distribution remains around the hole. (2) The cutting strain has little effect on residual strain around the hole which is close to the edge of entrance. (3) To maintain a high degree of accuracy, the location of a hole must be kept at a distance 2.5 times its diameter from the cutting surface or 5 times its diameter from the cutting end of the work piece.
社団法人日本機械学会の論文
1995-12-25