Device for sharpening blades of cutting-off machines, comprising two grinding wheels (1) each positioned on a corresponding side of a cutting edge (20) of a blade (2) of a cutting machine. The device comprises means adapted for controlling the symmetry of said cutting edge (20), with a sensor (3) placed at a predetermined distance from a corresponding side of the cutting edge (20. The sensor (3) is adapted to detect possible differences (d) between the lengths (n, p) of the two sides of the cutting edge (20). The sensor (3) is connected to a programmable unit (4) that processes the said difference (d) possibly detected by the sensor (3).

A gin blade sharpening system for sharpening a blank into a blade disk. The gin blade sharpening system comprises two or more grinding stations, a controller, and one or more upper grinders. The one or more upper grinders comprise at least a first upper grinder. The two or more grinding stations comprise at least a first grinding station and a second grinding station. Each among the two or more grinding stations comprise a clamp assembly configured to selectively hold the blade disk in a substantially horizontal position. A portion of the one or more upper grinders can be configured to sharpen an outer perimeter edge of the blade disk using an abrasive pad.

A gin blade sharpening system for sharpening a blank into a blade disk. The gin blade sharpening system comprises two or more grinding stations, a controller, and one or more upper grinders. The one or more upper grinders comprise at least a first upper grinder. The two or more grinding stations comprise at least a first grinding station and a second grinding station. Each among the two or more grinding stations comprise a clamp assembly configured to selectively hold the blade disk in a substantially horizontal position. A portion of the one or more upper grinders can be configured to sharpen an outer perimeter edge of the blade disk using an abrasive pad.

A tool for steeling a knife includes a frame and first and second steeling components. Each of the components is shiftably mounted relative to the frame for movement between a first position and a second position. The steeling components cooperatively define a knife interface configured to engage and thereby steel the knife. The steeling components are resiliently biased into the first position, with the knife interface moving as the steeling components shift between the first and second positions.

A tool for steeling a knife includes a frame and first and second steeling components. Each of the components is shiftably mounted relative to the frame for movement between a first position and a second position. The steeling components cooperatively define a knife interface configured to engage and thereby steel the knife. The steeling components are resiliently biased into the first position, with the knife interface moving as the steeling components shift between the first and second positions.

A controller is provided for use in controlling a blade sharpening system that includes at least one grinding wheel operable to sharpen the blade. The controller includes a memory device, and a processor communicatively coupled to the memory device. The processor is configured to receive signals from at least one sensor, the at least one sensor operable to monitor rotation of the at least one grinding wheel. The processor is further configured to adjust a position of the at least one grinding wheel relative to the blade based on the received signals.

A controller is provided for use in controlling a blade sharpening system that includes at least one grinding wheel operable to sharpen the blade. The controller includes a memory device, and a processor communicatively coupled to the memory device. The processor is configured to receive signals from at least one sensor, the at least one sensor operable to monitor rotation of the at least one grinding wheel. The processor is further configured to adjust a position of the at least one grinding wheel relative to the blade based on the received signals.