Abstract: The method is for sharpening a blade. An automatic sharpening apparatus is provided that has a housing with an elongate opening defined therein. A blade is placed inside the elongate opening. The blade is tightened between self-centered clamp holders. The rotation of the grinding wheel is turned on. The rotating grinding-wheel engages an underside of the blade and automatically moves along the blade by following a contour of the blade. While the grinding wheel moves along the blade, a counter-weight provides a counter-weight to the grinding wheel. The blade is sharpened while the blade is stationary inside the elongate opening of the housing.

Abstract: The method is for sharpening a blade. An automatic sharpening apparatus is provided that has a holder. A blade is placed into the holder. A grinding-wheel driving motor, in operative engagement with a wheel on a spindle, rotates a grinding wheel. A grinding assembly motor moves the grinding wheel in an x-direction towards the blade. A linear motor moves the grinding wheel from a first position to a second position in a z-direction without moving the grinding-wheel driving motor. The rotating grinding wheel engages the blade. The grinding wheel sharpens the blade.