Self-propelled forage harvester and method for operating a forage harvester

A self-propelled forage harvester comprising:

• a blade grinding and shear bar adjusting device configured to:
• regrind chopping blades positioned on a cutterhead of a chopping device;
• and
• adjust a distance of a shear bar associated with the cutterhead from a cutting edge of the chopping blades;
• at least one monitoring device configured to generate data indicative of one or both of a state of wear of the chopping blades or the distance of the shear bar from the cutting edge at least partly during operating the forage harvester in a current ongoing working mode;
• a control unit in communication with the blade griding and shear bar adjusting device and the at least one monitoring device, the control unit configured to:
• compare the data generated by the at least one monitoring device indicative of the one or both of the state of wear of the chopping blades or the distance of the shear bar to the cutting edge with at least one limit value for one or both of the state of wear or the distance of the shear bar to the cutting edge, wherein the at least one limit value comprises one or both of a predefined cutting sharpness of the chopping blades or a predefined distance of the shear bar to the cutting edge during a harvesting process, and wherein the at least one limit value comprises a lower limit for an optimum range to be maintained by the blade sharpening and shear bar adjusting device;
• and
• responsive to determining that the at least one limit value is reached, automatically command one or both of a sharpening process or a shear bar adjustment by the blade sharpening and shear bar adjusting device, wherein the execution of the one or both of the sharpening process or the shear bar adjustment is integrated into the current ongoing working mode of the forage harvester.