Metal deforming – By use of roller or roller-like tool-element
Patent
1976-09-15
1977-08-16
Mehr, Milton S.
Metal deforming
By use of roller or roller-like tool-element
72407, 72DIG20, B21J 732
Patent
active
040417514
ABSTRACT:
One or both opposite side portions of an edge of a workpiece of sheet material are peened to smoothness by two coacting peening tools in the form of collars oppositely acting upon said side portions through coaction with a rotary hammer resiliently carried within a housing. The two collars are slidably and rotatively carried on a stem rigidly depending from the housing and are held on the stem by an adjustable nut at the bottom of the stem. A first one of said collars is vibratorily actuated through direct action of said hammer to peen one of said side edge portions of the workpiece while the other of said collars is actuated indirectly to support and/or peen the other of said side edge portions through vibratory reaction of the hammer to its direct actuation of the first collar, which reaction is effective through said housing and its said stem.
REFERENCES:
patent: 3089364 (1963-05-01), Lowinger
patent: 3096672 (1963-07-01), Jones
patent: 3926031 (1975-12-01), Neilsen
Henderson Robert
Mehr Milton S.
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