Abstract: Recently developed computer-controlled twist drill grinding machines have allowed the production of precisely defined points of widely different shapes. The design methodology used for these machines ...

Abstract: The mathematical models of twist drills usually require the cutting edge of the drill to be straight. This requirement restricts the clearance angle near the chisel edge to undesirably small ...

Abstract: This paper describes a computer controlled twist drill grinding machine that places a maximum of function in the computer controller making the mechanical part of the machine very simple. A ...

Abstract: The presently available twist drill grinding machines evolved over a long period of time. They are a product of engineering ingenuity through trial and error. A recently developed mathematical ...