Determination of Cutting Parameters for Peripheral End Milling Using Discrete Handbook Data

Cutting speed and feed rate are the two main factors in determining cutting conditions in computer aided process planning, which are directly related to the tool life, machining cost and surface quality. There are experimental data available in the Handbook as the recommendations for academic study and practical applications. But the trends to characterize the data within the entire range and the determination of the intermediate data lying between the known data points are usually not clearly presented in such resources. This research focuses on building a “Composite Constrained Fitting Model” to determine the trends of the experimental cutting speed and feed data and thereby to obtain the intermediate data points. The model fits a composite curve through all the different curve segments, maintaining their boundary conditions and constraints on the coefficients to make its trend have valid physical interpretations.