(under subclass 58) Apparatus or method including use of a cutting tool having a pluraltiy of sequentially acting protuberances on each of which there is a cutting edge, adapted to move in a path with respect to the workpiece so that a first protuberance makes a shaping cut into the surface of the workpiece and is followed by a second
protuberance which makes a deeper shaping cut into that surface of the workpiece, so that the actions of sequentially acting protuberances is cumulative.
(1) Note. A rodlike cutting tool which moves along the axis thereof is considered to move in a path even if the cutting tool rotates to cut a helical groove.
SEE OR SEARCH CLASS
407, Cutters, for Shaping,
13, for a broaching cutting tool without drive structure or work recognizing structure.
