High-intensity roto peen flaps, method of making same, wheels incorporating same, and methods of using wheels incorporating same
AssigneeMinnesota Mining and Manufacturing Company
InventorsMichael W. Lovejoy, Jennifer L. Trice, Richard C. Kerr, John R. Damewood, Jill R. Menzel, Eddie L. Jarvis, Bert A. Ross
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Abstract
An improved high-intensity roto-peen flap, constructed of coated fabric material, the coating including a plurality of layers at least one of which comprises a linear polyurethane elastomer, exhibits improved life over previous high-intensity roto peen flaps. A method of making such a flap, a wheel incorporating at least one of the flaps, and a method of high-intensity roto-peening using the wheel are also presented.
Claims63
An improved high-intensity peening flap of the type in which an elongate strap of fabric having a coating thereon has at least one peening particle support base fastened thereto, the support base having a plurality of peening particles joined to an exposed face of the support base, wherein the improvement comprises said coating comprising a plurality of coating layers, at least one of the layers being comprised of a linear polyurethane elastomer.
An improved high-intensity peening flap of the type in which an elongate strap of fabric having a coating thereon has at least one peening particle support base fastened thereto, the support base having a non-exposed face and a plurality of peening particles joined to an exposed face of the support base, wherein the improvement comprises, said elongate support strap having first and second ends, an intermediate portion between said ends, and adapted to have external and internal surfaces when said first and second ends are overlapped, said strap folded so that the respective ends of said strap overlap and are each fastened to said intermediate portion of the strap by first fastening means, said intermediate portion of the strap forming first and second elbow portions of the strap, the peening particle support base secured to the strap between said first and second elbow portions so that said non-exposed face of said peening particle support base is adjacent the external surface of the strap using second fastening means, said flap also having exterior and interior support straps, said exterior support strap positioned adjacent a portion of said exterior surface of the elongate strap, said exterior support strap sandwiched between said portion of said exterior surface and said non-exposed surface of said peening particle support base, said interior support strap adjacent a portion of an interior surface of the elongate strap, said interior support strap positioned between said portion of said interior surface of said strap and said second fastening means.
An improved rotary peening wheel of the type having a hub, at least one peening flap removably fastened to the hub, the flap including an elongate strap of fabric having a coating thereon, the strap having at least one metal peening particle support base fastened thereto, and a plurality of peening particles metallurgically joined to an exposed face of the support base, wherein the improvement comprises the coating comprising a plurality of coating layers, at least one of the layers being comprised of a linear polyurethane elastomer.
A method of making a rotary peening flap, said method comprising:
- (a) fastening at least one peening particle support base to an elongate strap of fabric having a coating thereon, the elongate strap having first and second ends and an intermediate portion between said first and second ends, the coating having a plurality of coating layers, at least one of the layers comprising a linear polyurethane elastomer;
- and
- (b) overlapping and fastening said first and second ends to said intermediate portion of said elongate strap with fastening means, thus forming interior and exterior strap surfaces.
An improved method of high-intensity rotary peening of surfaces using a rotary peening wheel, the wheel including a hub loaded with at least one peening flap said flap comprising an elongate strap of fabric having a coating thereon, the coating being a plurality of coating layers, at least one of the coating layers being comprised of linear polyurethane elastomer, the strap having at least one metal peening particle support base fastened thereto, and a plurality of peening particles metallurgically joined to an exposed face of the support base, wherein the method comprises rotating said hub in a manner which forcefully contacts said plurality of peening particles against the workpiece.
Dependencies are inferred from the claim text.