ROTARY CUTTER MECHANISM

摘要

A rotary cutting mechanism (25) has a disc cutterbar (26) with transversely spaced rotatable disc cutters (28) to sever standing crop material by an impact action. A rotatable conditioning mechanism (30) may be mounted rearwardly of the cutterbar (26) to receive and condition severed crop material. Each disc cutter member (70) is provided with crop lifting ramp portions (75) adjacent the peripheral edge (74) thereof and adjacent each knife (45) in both leading and trailing relationships thereto. The inclined ramp portions (75) are operable to lift previously severed crop material away from the corresponding knives (45) before said knives (45) sever further standing crop material. The inclined ramp portions (75) are also operable to feed the severed crop material into the conditioning mechanism (30). The inclined ramp portions (75) are provided on both sides of the knives (45) to permit the disc cutter members (70) to be rotatable in either clockwise or counterclockwise direction and still provide a leading crop lifting action. The leading inclined ramp portions (75) can be provided with replaceable wear members (90) to extend the operative life of the disc cutter members (70).