Metal deforming – By use of tool acting during relative rotation between tool... – With metal deformation of different type
Patent
1997-05-29
1999-11-09
Larson, Lowell A.
Metal deforming
By use of tool acting during relative rotation between tool...
With metal deformation of different type
72106, 29890149, B21C 3728
Patent
active
059792027
ABSTRACT:
A method for making a grooved-end pipe fitting from standard pipe includes the steps of bending length of pipe on a press mandrel to form a curved pipe segment with an oval cross section and further working the curved pipe segment in a die to produce tangent end portions. The die cavity is shaped with a central curved portion and tangent end portions. The inner and outer radii of curvature of the central curved portion are greater than the inner and outer radii of the curved pipe segment, and are greater than the corresponding radii of curvature of a conventional cast fitting. As a result, the curved pipe segment can be shaped to conform to the shape of the cavity without buckling or bowing of the inner radius wall of the pipe. The tangent ends of the die shaped pipe are grooved in a subsequent step.
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Operating Instructions And Data Sheet, ITT Grinnell/Gruvlok/model #2010 Operating Instructions, ITT Grinnel Gruvlok Data Sheet.
Blakeley Engineering Ltd.
Larson Lowell A.
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