Metal deforming – By use of tool acting during relative rotation between tool... – During rotation of work
Patent
1986-03-05
1987-08-25
Larson, Lowell A.
Metal deforming
By use of tool acting during relative rotation between tool...
During rotation of work
140147, B21D 302, B21F 102
Patent
active
046884122
ABSTRACT:
A machine for straightening shafts which may be extremely crooked has a pair of bending members which may take the form of eccentric rollers mounted on parallel shafts having a common vertical center line, and which engage the shaft to be straightened as it enters between the bending members and deform the shaft in opposite directions, while rolling the shaft, thereby straightening it. Auxiliary rollers are movable into and out of the region between the bending members so as to locate the shaft to be bent between the bending members while they are at their greatest separation. These auxiliary rollers are capable of bending the shaft to be straightened so as to fit between the bending members. The auxiliary rollers remain in their inward position and locate the shaft to be straightened, and prevent it from escaping from between the bending members, until the bending members engage the shaft to be straightened. Then the auxiliary rollers retract and remain retracted until the straightened shaft is ejected from between the bending members.
REFERENCES:
patent: 3045739 (1962-07-01), Fyfe et al.
patent: 3625263 (1971-12-01), Kopczynski
patent: 3672411 (1972-06-01), Kopczynski
patent: 3875978 (1975-04-01), Kopczynski
patent: 4020665 (1977-05-01), Koizumi et al.
Larson Lowell A.
Lukacher Martin
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