Metal working – Method of mechanical manufacture – Assembling or joining
Patent
1993-07-01
1994-11-15
Kisliuk, Bruce
Metal working
Method of mechanical manufacture
Assembling or joining
29466, 29252, 29244, 292811, B23P 1904
Patent
active
053635434
ABSTRACT:
Two bushings are aligned coaxially with a bore in a part in preparation for installation concentrically in the two ends of the bore with an interference fit, using an elongated mandrel which is maintained coaxially on the bore centerline by a guide inserted in one end of the bore while the bushing is pressed into the other end of the bore. The force to press the bushings into the bore is exerted by a pulling tool to which the mandrel is coupled, and that force is transmitted through the mandrel to the bushing by way of a collar attached to the mandrel. The force of the pulling tool exerted on the mandrel is reacted through an anvil attached to the barrel of the pulling tool and effectively in contact with the side of the part opposite to which the bushing is being pressed into the bore. The faces of the collar and the anvil are machined flat and perpendicular to the axis of the mandrel so that the squeezing force exerted between them on the bushing and the part is parallel to the axis of the bore. This ensures that the bushing is pressed straight into the bore and is held in a concentric orientation during the installation so there is no gouging of the walls of the bore and the bushing is installed exactly concentric with the bore and coaxial to the other bushing.
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Boyd Jerry L.
Cameron, Sr. Kenneth C.
Kisliuk Bruce
Morgan Eileen P.
Neary J. Michael
The Boeing Company
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