Patent ID: 6902355

Claim:
A junction assembly for two tool parts comprising: a first tool part including a cone-shaped recess and a first substantially flat annular bearing surface surrounding the outer margin of the recess; a second tool part including a cone-shaped projection which is sized and configured for insertion into the recess, and a second substantially flat annular bearing surface surrounding the base of the projection; and a clamping device operable to apply an axial force to secure the two tool parts together wherein: the recess and the projection have substantially identical angles of taper; the projection is structured to be substantially non-resilient; and a wall defining the recess in the first tool part is structured to deform resiliently when the clamping force is applied so that tapered surfaces of the projection and the recess, and the bearing surfaces on the first and second tool parts respectively rest against one another with substantially no clearance in an accurately repeatable orientation when the two tool parts are connected; and the clamping device, when the axial force is released, applies a positive force to separate the first and second tool parts.