Cutting tool cartridge arrangement

Abstract

A cutting-tool cartridge arrangement for rotary cutting-tools in which the cutting-tool cartridge assembly is mountable in a aperture provided in the body member of the cutting-tool. The cutting-tool cartridge assembly has a split bushing for insertion into the aperture in the body member of the tool and the bushing is annular in shape, has internal threads and has a slot in the wall thereof extending from the threaded inside surface to the outside surface to provide a pair of opposed surfaces resiliently movable towards and away from each other. A set screw aperture is provided in the body member of the tool into which a set screw may be inserted and tightened against the split bushing. The stud seat having external threads is threaded into the split bushing and the stud seat also has a cutting insert end having matching walls that match the wall configuration of the mounting walls of a frustum cutting insert. A clamping nut threadingly engages the threaded walls of the stud seat at the cutting insert end thereof and has internal walls configured to match the flank surface of the frustum cutting insert. Tightening the clamping nut on the stud seat clamps the frustum cutting insert therebetween. Adjustment to the position of the insert may be made by threading the stud seat in or out of the split bushing until the cutting surface of the cutting insert is at the desired location. The set screw is then tightened to force the opposed walls of the slot in the split bushing means towards each other thereby clamping the threads of the split bushing on to the external threads of the stud seat to prevent any further movement or rotation of any portion of the cartridge assembly, including the insert during cutting operation of the cutting-tool.