TOOL TO CHASE CONCENTRIC GROOVES Russian patent published in 2009 - IPC B23B51/05 

FIELD: instrument making.

SUBSTANCE: proposed tool comprises a shank to be locked in the chuck, a casing with a guide accommodating a crosspiece with an axis perpendicular to the shank axis. The said crosspiece supports at least two blocks of fastening adjustable-height and locked cutters with axes parallel to the shank axis. To prevent nicks-and-burrs, the shank is arranged pivoted in the casing. One of the cutters features a V-shaped groove intended for cutting outer and inner diameters of the groove being chased, while the other, opposite, cutter removes material between cuts.

EFFECT: elimination of nicks-and-burrs.

2 dwg