Coil inserting tooling with quick release collet

Abstract

Improvements in coil placing tooling of the type employed to insert prewound coils in the slots of dynamoelectric machine stator cores which tooling has an annular collet for maintaining wedge guides axially and radially in position, and the wedge guides in turn maintain blades radially in position are disclosed. The blades are readily removable and replaceable by releasing the collet for limited displacement relative to the blades, moving the collet to a position where selected wedge guides are freed axially and radially, removing certain of the selected wedge guides, and subsequently removing certain of the blades associated with the removed wedge guides. Improvements in reversible blades for such coil placing tooling are also disclosed. Certain ones of the blades comprise an elongated blade of generally uniform cross-sectional configuration with a transverse support dowel receiving hole near each end. The blade is normally mounted in coil placing tooling by a dowel passing through one of those holes and with the convex surfaces facing radially inwardly toward one another. The blade may be removed from the dowel, reversed end-for-end and replaced in the coil placing tooling with the dowel passing through the transverse hole in the previously free end. In order to reduce damage to the coils, each free end has the convex portion relieved from the center of the hole toward the corresponding end of the blade. Typically about 0.008 to 0.010 is removed from the radially inner convex surface between the holes and the blade tips.