| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an electron beam welding method capable of securing excellent working accuracy in welding a fitting section where two members are fitted each other. <P>SOLUTION: A fitting-inserting section 25 of a shaft 21 is press-fitted to a fitting hole 15 of a drum body 11, a joining section 28 of an inner peripheral surface 16 of the fitting hole 15 and an outer peripheral surface 26 of the fitting-inserting section 25 joined each other is divided into a first welding range W1 and a second welding range W2 opposing to each other, a third welding range W3 between a welding finish point W1b of the first welding range W1 and a welding start point W2a of the second welding range W2, and a fourth welding range W4 between a welding finish point W2b of the second welding range W2 and a welding start point W1a of the first welding range W1, and the first welding range W1, the second welding range W2, the third welding range W3 and the fourth welding range W4 are welded in order. A clutch drum 10 can be secured in which coaxiality of the drum body 11 and the shaft 21 is secured, distortion deformation is suppressed, and working accuracy is excellent. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
