Abstract: Mathematical formulations for the working normal clearance and rake angles along the cutting edges of a multifacet drill (MFD) are developed. The effect of point geometrical parameters of an ...

Abstract: A multifacet drill (MFD), developed around 1953, has been used to improve the drilling performance by modifying the drill point geometry. A theoretical method for predicting the thrust and ...

Abstract: In this study, Prandtl’s transposition theorem is used to stretch the ordinary coordinate-system in certain direction. The small wavy surface can be transferred into a calculable plane ...