Adaptable abrasive cutting assembly for sharpener

摘要

An electric sharpener having a pair of abrasive wheel assemblies including energy absorbing hubs mounted a powered drive shaft and further integral flexible radially extending arms affixed to respective outer abrasive rings. A pair of disk abrasives assemblies are also affixed to the powered rotatable shaft and include a pair of flexible metal disks operatively connected to a hub attached to the rotatable shaft.

主权项

1. A self-powered electric sharpener for sharpening the edge of a tool comprising
an abrasive wheel assembly being mounted on a powered rotatable shaft, said abrasive wheel assembly having a flexible hub affixed against movement relative to said rotatable shaft, a peripheral abrasive ring operatively connected to said flexible hub by a radially extending, non-abrasive central portion for rotation for sharpening the edge of a tool, an inner portion of said non-abrasive central portion being flexibly affixed to said flexible hub and an outer portion of said non-abrasive central portion being affixed to said to said peripheral abrasive ring, and said flexible hub allowing said inner portion and hence said abrasive ring to deflect relative to the flexible hub by an amount determined by the force applied to said peripheral ring by the tool being sharpened to absorb the force transmitted to said rotatable shaft and to maintain the rotational speed of said rotatable shaft generally constant.