Patent ID: 7886426

Claim:
A stator manufacturing apparatus for joining a plurality of separate cores, each carrying a coil wound thereon, into an annular stator, comprising: a base plate; a plurality of radially inward displacing jigs disposed radially in an annular pattern on the base plate and which are radially displaceable toward and away from each other; a plurality of core holding jigs disposed radially inward of the radially inward displacing jigs and which are radially displaceable toward and away from each other; a movable plate disposed vertically upward of the base plate and which is vertically movable toward and away from the base plate; a cam disposed on the movable plate for displacing the radially inward displacing jigs radially toward each other when the movable plate is lowered; and a spacer holding jig having a holding means for holding spacers that are inserted between adjacent ones of the separate cores, wherein when the cam is lowered in unison with the movable plate, the cam presses the radially inward displacing jigs to displace the radially inward displacing jigs radially inward toward each other for thereby compressing the coils radially, and wherein the core holding jigs are displaced radially inward toward each other in unison with the radially inward displacing jigs for thereby joining the separate cores held by the core holding jigs into a stator.