A Computer Controlled Contouring Twist Drill Grinding Machine

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 wide variety of conical points can be produced by a virtual rotation about the cone axis accomplished by simultaneous movement of the grinding machine joints.

Investigation of machine vision assisted automatic resharpening process of micro-drills

“…Fugelso and Wu (1979) designed a grinder with microprocessor-control drill bit to realize automatic grinding according to cone model method. Vangsness and Fugelso (1995) simplified the mechanism and designed it as an automatic grinder with two rotational axles and two displacement axles. After that, focusing on the problem of great difficulty in solving the grinding parameters of Tsai and Wu, Fugelso (2001) proposed a grinding mechanism that could accurately aim at the right position more easily.…”