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AssigneeFord New Holland, Inc.
InventorsLarry D. Hall, John R. McClure
Estimating the term…
A method and apparatus for maintaining the cylindrical profile of forage harvester cutterheads involves moving a grinding stone back and forth along a predetermined path between positions which are adjacent opposite ends of a cutterhead. Initially, the grinding stone is moved gradually toward the cutterhead along a first slope until it is fully engaged with the cutting edges of the cutterhead knives. Next, the grinding stone is moved generally lengthwise of the cutterhead along a line substantially parallel to the longitudinal axis of the cutterhead while it is kept fully engaged with the cutting edges of the cutterhead knives. Finally, the grinding stone is moved gradually away from the cutterhead along a second slope until it is fully disengaged from the cutting edges of the cutterhead knives.
In a forage harvester having a rotatable cutterhead with a plurality of knives disposed generally lengthwise thereof so that their cutting edges are arranged to define a cylindrical profile when said cutterhead is rotating about its longitudinal axis, grinding means for sharpening the cutting edges of said knives, said grinding means being movable back and forth longitudinally of said cutterhead between first and second positions which are adjacent opposite ends of said cutterhead, a method of maintaining the cylindrical profile of said cutterhead during sharpening of said knives, said method comprising the steps of:
In a forage harvester having a rotatable cutterhead with a plurality of knives disposed generally lengthwise thereof so that their cutting edges are arranged to define a cylindrical profile when said cutterhead is rotating about its longitudinal axis, grinding means for sharpening the cutting edges of said knives, said grinding means being movable back and forth longitudinally of said cutterhead between first and second positions which are adjacent opposite ends of said cutterhead, a method of maintaining the cylindrical profile of said cutterhead during sharpening of said knives, said method comprising:
In a forage harvester having a rotatable cutterhead with a plurality of knives disposed generally lengthwise thereof so that their cutting edges are arranged to define a cylindrical profile when said cutterhead is rotating about its longitudinal axis, grinding means for sharpening the cutting edges of said knives, said grinding means being movable back and forth longitudinally of said cutterhead between first and second positions which are adjacent opposite ends of said cutterhead, apparatus for maintaining the cylindrical profile of said cutterhead during sharpening of said knives, said apparatus comprising:
Dependencies are inferred from the claim text.