| 摘要 |
PURPOSE:To improve the reliability of the strength of a field coil and to improve the dimensional accuracy of the coil by sequentially opening the groove of a connector from the inside corner in an oblique shape, and energizing it under pressure. CONSTITUTION:A field coil of a salient pole of a synchronous motor is formed by welding a plurality of conductors 1, 2 of rectangular shape to connecting portions 3. This welding is executed by holding the conductors 1, 2 by a gripper 4, connecting and energizing them with a power source 5, and contacting under pressure by Joule heat of contacting resistance of the portions 3. In this case, the end of the conductor 1 is opened obliquely at the desired angle to the perpendicular surface to the side 16 as further from the inside corner 3a, and perpendicularly butted to form a groove 11. |
