Patent ID: 8646159

Claim:
A retainer-and-cotter assembling device for assembling a shaft member, a cotter, and a retainer together, the shaft member including a recess formed in an outer peripheral surface, the cotter including a protrusion which is formed on an inner peripheral surface and engaged with the recess of the shaft member in an axial direction, the cotter having a tapered outer peripheral surface gradually expanded in diameter to one side in the axial direction, the cotter being divided into a plurality of pieces in a circumferential direction, the retainer having a tapered inner peripheral surface fitted onto the tapered outer peripheral surface of the cotter, the retainer-and-cotter assembling device comprising: a cotter holder for supporting a large-diameter-side end surface of the cotter from below; first moving means for inserting the shaft member along an inner periphery of the cotter from above the cotter; a cotter pressing mechanism for pressing the cotter from an outer periphery of the cotter and for fitting the protrusion on the inner peripheral surface of the cotter into the recess in the outer peripheral surface of the shaft member; and second moving means for taper-fitting the inner peripheral surface of the retainer onto the outer peripheral surface of the cotter from above the cotter.