| 摘要 |
A grinding arrangement for grinding knives of a chopper drum of a forag e harvester includes a movement arrangement for effecting movement of a grindi ng stone over the length of each of the knives, where individual locations of t he knives can be associated with differing grinding times in order that the knives be ground to produce a desired cylindrical profile. A control for the movement arrangemen t may include either a sensor for determining the need for grinding a given knife at a precise location along the knife and the grinding time required for achievin g a desired profile, or predetermined information stored in memory which operate s to automatically cause a certain amount of grinding time to elapse in accordanc e with a specific axial position of the grinding stone.
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