Metal deforming – By relatively movable offset tool-faces – With tool motion in fixed path
Patent
1982-02-10
1984-09-18
Crane, Daniel C.
Metal deforming
By relatively movable offset tool-faces
With tool motion in fixed path
72393, 72370, 29446, 29523, B21D 3100
Patent
active
044716435
ABSTRACT:
A pull gun (10) is used for pulling a mandrel (12, 150, 180) through an expandable sleeve (74, 144, 180) positioned in a fastener hole. The mandrel expands the sleeve as it moves therethrough causing the sleeve to put the metal which surrounds the hole in a state of compression. The pull gun has alternative extensions or sleeve retainers having general appearances of collet chucks and they are adapted to be positioned adjacent holes being prestressed. The retainers are of relatively small diameter for operation through a drill fixture and in small spaces on a workpiece.
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Fatigue Improvement by Sleeve Coldworking--By Joseph L. Phillips.
Champoux Robert L.
Copple Charles M.
Barnard Delbert J.
Crane Daniel C.
Fatigue Technology Inc.
Heberer Eugene O.
Jones David B.
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