To provide a rotary blade of a mowing machine which prevents breakage of a cutting edge as much as possible and increases durability.SOLUTION: The rotary blade of the grass cutter is bent and inclined by about 10 to 15 degrees in the direction opposite to the ground, every other blade edge. This makes it possible to relieve the impact by lifting by reaction in case of contact with an obstacle such as a pebble and to minimize breakage of the cutting edge. In addition, it is also possible to avoid angling of the bent cutting edge with respect to the ground, and also cutting of the cutting edge into the ground.BACKGROUND OF THE INVENTION【課題】刃先の破損を極力防止し、耐久性が増す草刈り機の回転刃を提供する。【解決手段】草刈機の回転刃を、刃先の1刃おきに、地面とは逆方向に10度から15度程度、折り曲げ、傾斜をつける。このことにより、小石などの障害物に接触した場合、反動で浮き上がることにより衝撃を和らげ、刃先の破損を最低限に抑えることが可能となる。加えて、地面に対して、曲げた刃先が角度をやわらげ、地面に刃先が食い込むことも回避できる。【選択図】図1
