Effect of cutting conditions on temperature generated in drilling process: a FEA approach

Heat generated during a drilling process has a major influence on the tool life and the workpiece material behaviour that are significantly affected by cutting conditions (cutting speed, feed rate). In this paper, the effect of cutting conditions on temperature generated in drilling process is investigated by means of finite element (FE) simulations using commercially available code MSC MARC MENTAT. A Johnson Cook material model is used to describe elasto-plastic deformation behaviour. The updated Lagrangian procedure is used to implement the transient analysis for the elasto-plastic material in the model. A modified shear friction model is employed to model friction at the tool tip-workpiece interface. The effect of friction on chip shape is investigated with FE simulations. Experiments were carried out to verify the FE results.