Description
Definition:
The Header Knife Head 670120 is a critical linkage component located within the cutterbar of a Claas combine’s harvesting header. It serves as the final drive connector that converts the oscillating motion from the drive mechanism into the precise, linear, back-and-forth movement of the cutting knife.
Primary Functions:
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Motion Conversion and Transmission: Its primary role is to act as the pivotal link between the header’s power source (such as a wobble box or pitman arm) and the knife itself. It transforms the input oscillation into a straight-line reciprocating motion.
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Driving the Cutterbar Knife: The knife head is the component that physically clamps onto and drives the entire knife assembly. It is directly responsible for pulling and pushing the knife sections back and forth across the full width of the header.
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Maintaining Alignment and Stability: It ensures the knife assembly remains correctly aligned within the ledger plates and knife guards. This prevents the knife from lifting, twisting, or binding under the stress of cutting, which is crucial for a clean cut and preventing component damage.
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Transferring Cutting Forces: The knife head is engineered to withstand and transfer the significant reciprocating forces and shock loads generated during the cutting process. Its robust construction is vital for reliable operation in dense and varying crop conditions.
