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Prediction of Transient Cutting Tool Temperatures
Tien-Chien Jen, Gustavo Gutierrez and Sunil Eapen

An analysis is performed for prediction of tool temperatures in interrupted and continuous cutting. This paper modifies the work presented by Radulescu and Kapoor (1994). The main goal of this paper is to decrease the computing time. Since judicious choice of boundary conditions can reduce computing time, the effect of the type of boundary condition is discussed. In particular, insulated boundary conditions are assumed instead of the convection boundary conditions, which reduces computing time significantly. An exact solution can then be found if the heat input function is not too complicated. A power law approximation is used to eliminate the time consuming computation of the exponential terms in the exact solution. This can reduce the computing time by a factor of seven in the example given. The limitation of this approach is when the convective heat transfer coefficient exceeds certain value. Some discussion and recommendations are given to the validity of this approach. The effect of convective cooling in the cutting process is also presented. Finally, comparisons with experimental data with this model along with the effect of convection due to air-cooling are presented.

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