Numerically controlled machine tool drill - has cutting part in tool body and partly cylindrical connection to shaft
Tool with peak drill for drilling or centering of holes, partic. on numerically controlled machines, with a cutting part formed in the tool body and a partly cylindrical section where this cutting part connects to the tool shaft. This intermediary part from the cutting surface to the shaft takes the form of part of a cylinder, the axis of which is inclined to the longitudinal axis of the tool body, at an angle of between 30 and 60 deg. and pref. 45 deg. The axis of the intermediary part's cylinder extends over the cutting angle. The design is partic. intended to produce a more stable tool.