.~ One tool (either internal or external) having compound motion {1}
186
.~.~ Annulus and disc-type tool pair
DEFINITION
Classification: 83/186
(under subclass 185) Apparatus wherein the cutting means comprises at least one tool pair consisting of an internal edged tool and an external tool provided with a peripheral cutting edge substantially completely surrounding the work, each such tool having a surface lying in a plane common to both tools and along which surface the cutting edge is disposed, so that shearing of the work occurs in the common plane, and in which the peripheral cutting edge of the external tool substantially completely surrounds the tubular work.
(1) Note. One or both of the tools may be active in the cutting operation and the conformation of either tool to the work surface may be modified; as, for instance, to provide relieved sections resulting a tab portions of such surface, or to result in a progressive cutting operation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
179, for related cutting means wherein the tubular work is
prepacked with an internal tool.
189+, for an annulus and disc type tool pair having rectilinear motion.
