Abstract
A model for predicting cutting tool temperatures under transient conditions is presented.
The model of Stephenson et al. [10] is extended to include the initial transient response to
the tool temperature and nonuniform heat flux distributions. The main goal in this paper
is to be able to accurately predict the initial transient tool temperature response, or
temperatures in interrupted cutting for cases where the cutting time is short. A method to
predict the true transient energy partitioning instead of quasi-steady energy partitioning
(Stephenson et al., [10]), without seeking the full numerical analysis, has been developed.
In this paper, the transient energy partitioning is obtained through a fixed-point iteration
process by modifying the quasi-steady energy partitioning method presented by Loewen
and Shaw [11]. The predicted transient tool temperatures are compared quantitatively to
the experimental data. Utilizing a semi-empirical correlation for heat flux distribution
along the tool-chip interface, the temperature distribution is calculated and compared
qualitatively to existing experimental data.