Metal deforming – With use of control means energized in response to activator... – Sensing tool or tool-linked part
Patent
1985-01-29
1987-02-03
Larson, Lowell A.
Metal deforming
With use of control means energized in response to activator...
Sensing tool or tool-linked part
72342, 72370, B21D 4102
Patent
active
046401148
ABSTRACT:
A method for cold working holes employs an automatic riveting machine that is fed with memory metal sleeves having an O.D. slightly smaller than a hole to be worked. A mandrel is forced into the sleeve and plastically expands the sleeve in the hole thereby working the hole wall around the sleeve. The mandrel is withdrawn and the sleeve is thermally induced to return to its initial shape memory O.D. permitting removal of the shrunken sleeve from the work hole.
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Grumman Aerospace Corporation
Larson Lowell A.
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