ドリル加工における切りくず生成状態と切削抵抗の解析的予測(第4報) : チゼル部に関する解析結果と実験結果の比較

概要

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In the 3rd part of this investigation a cutting model with restricted tool-chip contact length, which represents the formation of a helical chip produced by the chisel edge, was proposed. By specifying the frictional stress on the rake face of the chisel edge, the model enables to predict the chip formation, and torque and thrust force through the energy method. To evaluate the condition on the rake face, two-dimensional cutting experiment was done with fairly negative rake angle tools having differently restricted tool-chip contact length. It is clear that the value of frictional stress on the rake face of the chisel edge approximates to 0.2 times the value of shear stress on the shear plane. The torque and thrust force, direction of translational velocity and others are measured and compared with those predictions. On the torque and thrust force, the predicted results are in good agreement with the experimental results.
公益社団法人精密工学会の論文
1988-06-05