| Abstract: | This paper describes an orthogonal machining theory which can be used to determine the stresses, temperatures etc. involved in chip formation from a knowledge of the work material flow stress and thermal properties and cutting conditions. It is shown how these can be used to predict machinability factors such as power consumption, built-up edge range, tool wear rates (tool life) and those cutting conditions which cause plastic deformation of the cutting edge. An oblique machining theory which is more representative of practical machining processes than the orthogonal theory is then described, taking into account machining on more than one cutting edge as in bar turning. Throughout the paper comparisons are made between predicted and experimental results. |
