| 摘要 |
PURPOSE:To execute satisfactory welding extending over the whole surface of a joint part by forming a clearance extending over the whole periphery extending from a groove hole of the inside to an exposed joint part, in the joint part of a first member and a second member which are brought to press fit and fitted. CONSTITUTION:A gear (a second member) 2 is brought to press fit and fitted to an axis (a first member) 1. In the joint part of both the members 1, 2 being the inner part than an exposed joint part of both the members 1, 2, a groove hole 3 is formed extending over the whole periphery. In the joint part extending from the groove hole 3 to the exposed joint part 7, a clearance 8 is formed extending over the whole periphery. Subsequently, the exposed joint part 7 being an opening part of the clearance 8 is irradiated with an electron beam and both the members 1, 2 are welded. In such a way, satisfactory welding can be executed extending over the whole surface of the joint part. |
