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US 11,259,469 B2Granted
Grinding device and grinding method wherein a grinding unit can operate on-board as well as off-board
AssigneeForage Company B.V.
InventorThomas Dreier
Life of this patent
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Abstract
A grinding device and a grinding method for grinding at least one knife. The grinding device includes a frame with a knife holder and a grinding unit comprising a grinding head, a grinding head holder, and a grinding head drive assembly. The grinding unit can selectively be connected with the frame or can be disconnected from the frame and can be placed on a cutting assembly with knives to be ground. In both operating modes the grinding head drive assembly rotates the grinding head and moves the rotating grinding head with respect to the grinding head holder.
Claims11
A grinding device comprising:
- a stand-alone frame comprising a knife holder arranged to hold at least two knives to be ground, one after the other;
- and
- a portable grinding unit, comprising:
- a grinding head;
- a grinding head holder holding the grinding head;
- and
- a grinding head drive assembly configured to rotate the grinding head with respect to the grinding head holder, and move the grinding head along a curved trajectory in contact with the one knife, and subsequently the other knife of at least two knives to be ground, thereby grinding a cutting edge of the one knife and subsequently the other knifes held by the knife holder, and
- wherein the stand-alone frame further comprises a releasable connection to the portable grinding unit,
- wherein the grinding head drive assembly is further configured to move and to rotate the grinding head when the portable grinding unit is connected with the frame, and when the portable grinding unit is disconnected from the frame and mounted to a cutting assembly of an agricultural harvester to grind at least two knives of the cutting assembly, one after the other.
6 more elements
A grinding device comprising:
- a stand-alone frame comprising a knife holder arranged to hold at least two knives to be ground, one after the other;
- and
- a portable grinding unit comprising:
- a grinding head;
- a grinding head holder holding the grinding head;
- and
- a grinding head drive assembly configured to rotate the grinding head with respect to the grinding head holder, and move the grinding head along a curved trajectory in contact with the one knife, and subsequently the other knife of the at least two knives to be ground, thereby grinding a cutting edge of the one knife and subsequently the other knife held by the knife holder;
- wherein the stand-alone frame further comprises a releasable connection to the portable grinding unit,
- wherein the grinding head drive assembly is further configured to move and to rotate the grinding head when the portable grinding unit is connected with the frame, and when the portable grinding unit is disconnected from the frame and mounted to a cutting assembly of an agricultural harvester to grind at least two knives of the cutting assembly, one after the other;
- wherein the knife holder comprises:
- at least two parallel plates;
- and
- a plurality of pins,
- wherein each plate of the at least two parallel plates has a hole pattern with a plurality of holes,
- wherein each pin of the plurality of pins is arranged to be shifted through a pair of opposing holes in each plate of the at least two parallel plates, and
- wherein adjacent plates are arranged to carry a knife by means of at least two pins shifted through the opposing holes.
13 more elements
A grinding device comprising:
- a stand-alone frame comprising a knife holder arranged to hold at least two knives to be ground, one after the other;
- and
- a portable grinding unit comprising:
- a grinding head;
- a grinding head holder holding the grinding head;
- and
- a grinding head drive assembly configured to rotate the grinding head with respect to the grinding head holder, and move the grinding head along a curved trajectory in contact with the one knife, and subsequently the other knife of the at least two knives to be ground, thereby grinding a cutting edge of the one knife and subsequently the other knife held by the knife holder;
- wherein the stand-alone frame further comprises a releasable connection to the portable grinding unit,
- wherein the grinding head drive assembly is further configured to move and to rotate the grinding head when the portable grinding unit is connected with the frame, and when the portable grinding unit is disconnected from the frame and mounted to a cutting assembly of an agricultural harvester to grind at least two knives of the cutting assembly, one after the other;
- wherein the grinding head comprises;
- a shaft;
- and
- at least one grinding body mounted on the shaft;
- and
- the portable grinding unit comprises a guiding assembly,
- wherein the grinding head drive assembly is arranged to rotate and to shift the shaft and thereby the grinding body mounted on the shaft, and
- wherein the guiding assembly is arranged to guide the rotated and shifted shaft of the grinding head with respect to the grinding head holder along a given trajectory.
14 more elements
Dependencies are inferred from the claim text.