ATTACHMENT PARTICULARLY USEFUL FOR MILLING MACHINES TO ENABLE CUTTING SHARP INTERIOR CORNERS

摘要

An attachment for a milling machine head having a longitudinal axis about which a cutting tool is normally rotated when working a workpiece, the attachment includes: a coupling sleeve (4) attachable to the milling machine head with the longitudinal axis of the coupling sleeve coaxial to the longitudinal axis of the milling machine head; and a rotary cutter member (3) carried by the coupling sleeve and rotatable with respect thereto about a rotary axis which is at a predetermined angle with respect to the longitudinal axis of th milling machine head. In the described preferred embodiments, the rotary cutter member is of conical configuration, having an angle substantially 55° with respect to the longitudinal axis of the milling machine head, and defining a cone angle of substantially 70°, which enables the attachment to cut sharp internal comers in workpieces.