| 摘要 |
A concentric magnetic core is assembled from a plurality of precut laminations formed into the desired shape and annealed. A pilot hole is then drilled in the centerline of the uncut yoke of the formed core. The core is then linked with a preformed coil or coils, with the pilot hole being used to insure positive registration of the laminations during lacing about the preformed coil or coils. A second pilot hole may be drilled within the cut yoke to aid in closing the joints if desired. A vibrating pilot pin may be used in the second pilot hole to assure positive closure of the joint in each lamination.
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