A Study on Determination of Coefficients of Cutting Force in Facing Process of SKD11 Steel Using the Circle Inserts

In this paper, combining theory and experimental process of face milling the SKD11 steel using circle inserts, the average values of cutting forces (CF) were built as a linear regression of feed per insert with high values of determination coefficients (more than 96.87%). Based on this relationship, the cutting force coefficients (CFCs) were determined including tangential shear force coefficient (Ktc) of 956.873 N/mm2, radial shear force coefficient (Krc) of 910.319 N/mm2, axial shear force coefficient (Kac) of -419.074 N/mm2, tangential edge force coefficient (Kte) of -15.023 N/mm, radial edge force coefficient (Kre) of 16.289 N/mm, and axial edge force coefficient (Kae) of 17.708 N/mm. The CF models were successfully applied to calculate and verify the CFs in facing process of SKD11 steel.