Metal deforming – By use of tool acting during relative rotation between tool... – During rotation of work
Patent
1985-11-04
1986-11-25
Larson, Lowell A.
Metal deforming
By use of tool acting during relative rotation between tool...
During rotation of work
72431, B21D 316
Patent
active
046241230
ABSTRACT:
A machine for straightening cylindrical workpieces such as motor armature assemblies having diametrically enlarged intermediate sections and reduced diameter opposite end sections coaxial with the intermediate sections. The machine has first and second separable bearing units aligned axially and spaced apart axially for engagement and support of said reduced diameter opposite end sections of a workpiece. In one embodiment, at least one end section projects axially and with the workpiece rotating, a radially movable deflection device engages the projecting end section of the workpiece, bends and slowly returns the same to axial alignment. In a second embodiment, both end sections of the shaft or reduced diameter portion are deflected and straightened simultaneously. In a third embodiment the intermediate section is bent out of axial alignment and slowly returned for straightening relative to the opposite end sections.
REFERENCES:
patent: 503616 (1893-08-01), Peacock
patent: 2724421 (1955-11-01), Brannen
patent: 3464253 (1969-09-01), Beyer et al.
patent: 3583191 (1971-06-01), Colonius et al.
Bertolette Machines, Inc.
Larson Lowell A.
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