| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a crankshaft which is constituted by connecting a pair of crankshaft halves each having a crank web which is continuously provided to a journal part in one piece and has a weight part in a position which is offset from the axis of the journal part by a crank pin, both ends of which are press-fitted into a press-fitting hole provided to the crank web, the crankshaft which suppresses a distortion/deformation amount caused by the press fitting of the crank pin, and reduces a time required for correction work, and increases productivity. <P>SOLUTION: The thinning sections 60, 61 of the surroundings of the press-fitting holes 52, 53, which are arranged on the sides of the weight parts 50c, 51c, are provided to the surfaces of the crank webs 50b, 51b facing each other, respectively. <P>COPYRIGHT: (C)2010,JPO&INPIT |
