Prediction of cutting forces in machining with restricted contact tools

A semi-empirical method is described for predicting cutting forces in orthogonal machining with restricted contact tools. The method uses a well-established machining theory to predict cutting forces and tool-chip contact length for the corresponding plane face tool, i.e., a tool having the same cutting-edge geometry but no restricted contact. These predicted parameters and a set of empirical relations are then used to calculate the cutting forces for the restricted contact tool. A comparison between predicted and experimental results for two plain carbon steel work materials and a range of tool geometries and cutting conditions shows good agreement.