PROBLEM TO BE SOLVED: To provide a ridge forming machine that can form a tight ridge with a smooth surface, and also provide a ridge forming machine with a durable ridge forming unit.SOLUTION: A ridge forming machine is provided which is configured as follows: the surface of a cone rotating body 31 is constituted of a plurality of radial segments 310 mainly on a rotary central axis 315 the segments 310 each have an outer circumferential surface formed so that a distance from the rotary central axis 315 is increased from a rotation direction front toward a rotation direction rear in an arc shape a rotation direction rear end 311 has a linear inclined plane 312 internally folded from a rotary outermost circumferential diameter 313 in each cross section part of the circular arc-shape outer circumferential surface and an inclination angle is folded inside at an angle within 45 degrees angle inside to a tangential line 314 of a rotary diameter.COPYRIGHT: (C)2015,JPO&INPIT【課題】硬く締まった表面が滑らかな畦の形成ができる畦形成機を提供するとともに、耐久性のある畦形成部を有した畦形成機を提供する。【解決手段】円錐回転体31の表面は回転中心軸315を中心とした放射状の複数枚の分割片310によって構成されていて、分割片310は、外周面が回転中心軸315からの距離が回転方向前方から回転方向後方に向って円弧状に増大するように形成され、回転方向後端部311は、円弧状外周面の各断面部における回転最外周径313より内方に折り曲げられた直線状の傾斜面312を有し、傾斜角度は、回転径の接線314に対し内側に45度角以内の角度で折り曲げられている畦形成機を提案する。【選択図】 図4
