| 摘要 |
1,099,051. Making electrical coils; electromagnetic forming. GENERAL ELECTRIC CO. Nov. 30, 1965 [Nov. 30, 1964], No. 50840/65. Headings B3A and B3Q. In a method of placing an electrical winding in desired spatial relationship with respect to a coil accommodating member, the placing is effected by means of a surge of current flow through the winding. A stator core 13 is wound so that the winding 12 comprises coil groups 10, 11 which are connected across terminals 19, 20 of a power supply circuit 21. When a pushbutton 26 is operated an electrical impulse of preselected intensity is provided by first charging a capacitor bank to a selected voltage and by discharging the bank through the coil groups 10, 11. Due to the interaction of the magnetic fields arising through the current surge in the windings, the coils are compacted in the stator slots 14 and the end turn portions are pushed back against the faces of the core 13. The end faces may be provided with an insulating member (28), Fig. 7 (not shown), and the compacting is preferably performed by applying two or more impulses of increasing magnitude. Coil removal may be similarly effected by. high power impulses of the correct polarity. |
