PROBLEM TO BE SOLVED: To provide tilling claws in which the tilling resistance can be reduced while improving harrowing performance.SOLUTION: An agricultural machine 1 includes a machine body 2 connected to the rearward of a tractor, a tilling body 6 for tilling work, and a leveling body 17 for leveling work. The tilling body 6 has a rotary shaft body 11, and two or more tilling claws 15 attached to this rotary shaft body 11. Each tilling claw 15 includes a planar base end side plate part 31, a curved middle plate part 32 continuously arranged to this base end side plate part 31, and a planar tip side plate part 33 continuously arranged to this middle plate part 32. The middle plate part 32 has a curvature radius that is gradually increased from the front end side in the rotation direction toward the rear end side in the rotation direction.COPYRIGHT: (C)2015,JPO&INPIT【課題】砕土性能を向上しつつ、耕耘抵抗の低減を図ることができる耕耘爪を提供する。【解決手段】農作業機1は、トラクタの後部に連結する機体2と、耕耘作業をする耕耘体6と、整地作業をする整地体17とを備える。耕耘体6は、回転軸体11と、この回転軸体11に取り付ける複数の耕耘爪15とを有する。各耕耘爪15は、平面状の基端側板部31と、この基端側板部31に連設した曲面状の中間板部32と、この中間板部32に連設した平面状の先端側板部33とを備える。中間板部32は、その曲率半径が回転方向前端側から回転方向後端側に向かって徐々に増大している。【選択図】図1
