| 摘要 |
An apparatus for forming electrical coil bars used in dynamoelectric machines of any size and cone angle. The apparatus includes at least one rotatable frusto-conical shaped member whose major diameter, minor diameter, and cone angle are adjustable to form coils for any sized dynamoelectric machine. By guiding an end portion of an electrical coil bar against the conical surface in a spiral configuration about the conical member's axis of rotation, the electrical coil bars may be caused to lie along a frusto-conical surface when assembled in the dynamoelectric machines. The frusto-conically shaped member has a plurality of radially extendible struts at one axial end thereof, a plurality of radially directed support members at the other axial end thereof, and a plurality of shaping ribs extending between the struts and support members. The shaping ribs are pivotally mounted at one end to the struts through pinned joints and slidably mounted at their other end to translation blocks which are, in turn, slidably mounted on the shaping ribs. The minor diameter of the frusto-conical member may be adjusted by radially extending the struts to any selected position and clamping them there. The major diameter may be adjusted by simultaneously pivoting the shaping ribs relative to the struts and sliding the translation blocks relative to the support members and shaping ribs. The relative sliding action obtains when fasteners disposed through cooperating slots and holes formed in the ribs and translation blocks, respectively, are loosened.
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