Sharpening unit for disk-shaped blades, cutting machine with a grinding unit and sharpening procedure.

摘要

Sharpening unit to sharpen a cutting blade shaped disc (19) having a bevel (205) with a continuous circular (203) edge, comprising a first grinding wheel (81) and a second grinding wheel (83) acting on a first side (207) and a second side (209) of said bevel (205), characterized in that said first grinding wheel (81) has a thinner than said second grinding wheel (83) grain; the inclination of said first grinding wheel is such that when the unit is in operation, said first grinding wheel is placed against the first side (207) of the blade with a slightly greater than the inclination of the first side inclination relative to the plane of placement (PG) of the cutting edge of the blade, while the inclination of said second grinding wheel (83) is substantially parallel to the second side (209) of said bevel, and said second grinding wheel is arranged and designed to sharpen the cutting bevel of the blade, while said first grinding wheel is arranged and designed to apply a reaction force to said blade to prevent or reduce flexure of the blade in the sharpening area and eliminating any burrs produced by the second grinding wheel cutting edge.