MULTI-FUNCTION SHARPENING TOOL Russian patent published in 2018 - IPC B23B27/00 

FIELD: machine engineering.

SUBSTANCE: tool comprises a holder with a rotatable multiblade cutting insert. It is provided with collapsible cutting tools located in grooves, a collapsible axial cutting tool is arranged on one side of the holder in the semi-open groove, which shank has an ear fitted on axle mounted in said groove, and on the other side of the holder, in the open groove, there is a collapsible tool in the form of a retractable cutter. The axial tool can be in the form of a drill, a centering drill, a counterboring tool or a countersink. Fixing and pressing element in the form of a resilient tab can be mounted in the open groove for collapsible tool in the form of a sliding cutter. The retractable cutting tool can be made in the form of a cutting, threaded or shaped cutter.

EFFECT: increase of performed operations due to the use of different cutters and axial tools.

4 cl, 9 dwg