Metal deforming – By deflecting successively-presented portions of work during... – By use of work-contacting wiper and moving – work-holding form
Patent
1993-08-30
1994-09-13
Jones, David
Metal deforming
By deflecting successively-presented portions of work during...
By use of work-contacting wiper and moving, work-holding form
72149, B21D 700
Patent
active
053458036
ABSTRACT:
Disclosed is an apparatus for producing smooth, continuous arcuate contour bends in tubes used, for example, in the manufacture of fuel manifolds for gas turbine engines. A flexible die cavity circumscribing an arbor member with an integral adjustment feature are utilized to provide means for modifying the radius of curvature of the forming die cavity to compensate for variable tube spring back characteristics. A first embodiment provides for infinite adjustment of radius of curvature within range limits, while an alternate embodiment provides for incremental adjustment. Means are also provided to lock the adjustment feature once the desired radius of curvature has been achieved.
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General Electric Company
Herkamp Nathan D.
Jones David
Squillaro Jerome C.
Stamos C. W.
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