US 11,717,873 B2
Method and apparatus for impacting metal parts
Lauren K. Lundquist, Maple Valley, WA (US); David G. Jensen, Auburn, WA (US); McKay A. Kunz, Buckley, WA (US); Gregory L. Ramsey, Seabeck, WA (US); Michael Delos McGraw, Bonney Lake, WA (US); James E. Pillers, Seattle, WA (US); and Nate Speer, Bonney Lake, WA (US)
Assigned to The Boeing Company, Arlington, VA (US)
Filed by The Boeing Company, Chicago, IL (US)
Filed on Jan. 24, 2020, as Appl. No. 16/752,143.
Application 16/752,143 is a division of application No. 14/675,465, filed on Mar. 31, 2015, granted, now 10,576,523.
Application 14/675,465 is a continuation in part of application No. 14/031,690, filed on Sep. 19, 2013, granted, now 8,997,545, issued on Apr. 7, 2015.
Prior Publication US 2020/0164422 A1, May 28, 2020
Int. Cl. B21D 31/06 (2006.01); B21D 53/88 (2006.01); B21D 37/00 (2006.01); B21D 22/00 (2006.01); B21D 22/18 (2006.01); B21D 22/02 (2006.01); B21D 1/06 (2006.01); B21D 1/12 (2006.01); B21D 22/06 (2006.01)
CPC B21D 31/06 (2013.01) [B21D 1/06 (2013.01); B21D 1/12 (2013.01); B21D 22/00 (2013.01); B21D 22/02 (2013.01); B21D 22/06 (2013.01); B21D 22/18 (2013.01); B21D 37/00 (2013.01); B21D 53/88 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A driven member of a metal peening machine, the metal peening machine being configured to drive the driven member, in a driving direction, into contact with a work surface of a metal workpiece to deform the metal workpiece, the driven member comprising:
a shaft comprising an impact end; and
a plurality of impact features, wherein each one of the plurality of impact features:
is coupled to and protrudes, in a direction, a distance from the impact end of the shaft;
comprises an impact surface to be driven into contact with the work surface of the metal workpiece, the impact surface being one of flat or rounded;
has a width, perpendicular to the direction and at least as great as the distance; and
is fixed relative to the shaft, such that each one of the plurality of impact features is not movable relative to the shaft;
wherein:
the plurality of impact features are arranged, about the impact end, in a pattern which is asymmetrical relative to any possible plane, parallel to the direction, that bisects the pattern;
at least one of the impact features of the plurality of impact features defines an impact surface with a non-circular peripheral shape in a plane perpendicular to the driving direction; and
the non-circular peripheral shape of the impact surface is asymmetrical.