Milling tool assembly having a replaceable cutter

摘要

A milling tool assembly has a replaceable cutter and a reusable shank connected to the cutter with a detachable joint. The joint may be, for example, a threaded connection. An intermediate alignment sleeve made of an elastic or semi-elastic material, is positioned between the cutter and the shank about the axis of rotation of the shank.

主权项

1. A milling tool assembly comprising:
a reusable shank; a replaceable cutter having an active fluted portion coupled to the shank via a detachable joint, the detachable joint comprising:
a tightening means;an at least partially elastic, energy absorbing, intermediate alignment sleeve positioned between the cutter and the shank concentric with an axis of rotation of the tool;an alignment bore concentric to the axis of rotation defined in one of the shank and the cutter, the alignment bore bounded by an axial stop surface disposed perpendicular to the axis of rotation and a first portion of the tightening means disposed toward a rear portion of the alignment bore away from the axial stop portion;a tail outwardly protruding from an end surface of the other one of the shank and the cutter and having a second portion of the tightening means that is complementary to the first portion of the tightening means; anda cylindrical radial aligner disposed concentric with the axis of rotation of the tool and extending between the end surface of the other one of the shank and the cutter and the second portion of the tightening means,wherein the tightening means is of a longer axial length than the cylindrical radial aligner.