Method for determining the sharpness of cutting edges of chopper blades
AssigneeCLAAS Saulgau GmbH
InventorsStefan Loebe, Klaus Schulze, Hans Rauch
Life of this patent
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Abstract
A method for determining the sharpness of cutting edges (16) of chopper blades (1) at a rotationally driven chopper drum (14) of a forage harvester includes scanning a blade surface of at least one of the chopper blades located behind the cutting edge by at least one electrode operating as a contact sensor and determining a duration of contact of the at least one electrode with the blade surface.
Claims14
A method for determining a sharpness of cutting edges (16) of chopper blades (1) at a rotationally driven chopper drum (14) of a forage harvester, comprising a shear bar (19) and a sharpening device (15) having a sharpening stone (2) for resharpening the chopper blades (1), comprising steps of:
- scanning a blade surface (5) of at least one of the chopper blades (1) located behind a cutting edge (16) thereof by at least one electrode (3) disposed at the sharpening stone (2) of the sharpening device (15) and having direct contact with the blade surface (5), and
- using a measurement system (24), determining a duration of contact of the at least one electrode (3) with the blade surface (5).
A device for determining a sharpness of cutting edges (16) of chopper blades (1) at a rotationally driven chopper drum (14) of a forage harvester, comprising a shear bar (19) and a sharpening device (15) having at least one sharpening stone (2) for resharpening the chopper blades (1), comprising:
- at least one electrode (3) configured as a contour sensor (27) for scanning a blade surface (5) of at least one of the chopper blades (1) located behind a cutting edge (16), the at least one electrode (3) disposed at the at least one sharpening stone (2) of the sharpening device (15) and having direct contact with the blade surface (5);
- and
- a measurement system (24) for detecting a cutting edge sharpness of chopper blades (1);
- wherein the measurement system (24) determines a duration of contact between the chopper blade (1) and the at least one electrode (3).
Dependencies are inferred from the claim text.