Blade sharpening system for agricultural implements

A blade sharpening system, comprising:

• a base;
• a pendulous arm having a first end rotatably coupled to the base by a pivot joint;
• a sharpener suspended by the pendulous arm and configured to engage a generally circular agricultural implement blade while mounted on the agricultural implement, wherein the pendulous arm is configured to enable movement of the sharpener to accommodate lateral variations in blade profile;
• and a centering assembly configured to bias the sharpener toward a neutral position;
• wherein the centering assembly comprises:
• a first arm rotatable coupled to the pivot joint and in contact with a first side of the pendulous arm;
• a second arm rotatably coupled to the pivot joint and in contact with a second side of the pendulous arm;
• a spring extending between the first arm and the second arm, wherein the spring is configured to bias the first arm and second arm toward the pendulous arm;
• and
• a drive unit configured to rotate the blade relative to the sharpening assembly, wherein the drive unit comprises a wheel configured to engage the blade, and a motor configured to drive the wheel.

A blade sharpening system, comprising:

• a base;
• a pendulous arm having a first end rotatably coupled to the base by a pivot joint;
• a sharpener suspended by the pendulous arm and configured to engage a generally circular agricultural implement blade while mounted on the agricultural implement, wherein the pendulous arm is configured to enable movement of the sharpener to accommodate lateral variations in blade profile;
• a rail configured to support the base and to facilitate movement of the base along the rail;
• a mounting feature coupled to the rail and configured to engage a structural member of the agricultural implement to support the rail and base;
• and a centering assembly configured to bias the sharpener toward to a neutral position, wherein the centering assembly comprises:
• a first arm rotatably coupled to the pivot joint and in contact with a first side the pendulous arm;
• a second arm rotatably coupled to the pivot joint and in contact with a second side of the pendulous arm;
• and
• a spring extending between the first arm and the second arm, wherein the spring is configured to bias the first arm and the second arm toward the pendulous arm.