| 摘要 |
PURPOSE:To eliminate vibration and noise in engine system by pressure fitting the fitting section of crankshaft to the innercircumferential face of tubular flange of flywheel then welding while preloading thereby making the assembly into single body in view point of inherent vibration. CONSTITUTION:The crankshaft 1 is assembled into hollow structure by welding pressed steel plate member 11 then a tubular section 21 constituting a portion of journal section 12 and a pressed member 2 bending radially outward from the tubular section 21 while formed with a flange 22 extending axially on the outercircumferential edge section are secured to one end section. While flywheel sideboard 33 restriction molded with inner and outercircumferential tubular flanges 31, 32 is prepared to case the edge section of the outercircumferential tubular flange 32 thus to cast a body 34 having a frictional clutch face 35. Then respective flange 22, 31 is pressure fitted to perform non-distortion welding of the crankshaft 1 and the flywheel 3 by means of lase beam under preloaded state. |
