Wheel disc and method for manufacture thereof

Details Wheel disc and method for manufacture thereof Wheel disc and method for manufacture thereof

B - Operations, Transporting

60

B

26/190, 301/63

B60B 7/00 (2006.01) B21D 31/02 (2006.01) B21D 53/26 (2006.01)

Patent

CA 1127210

Abstract An improved tapered wheel disc and method of making the same which includes the steps of spin- forming a radially outwardly-tapering concave disc from a section of blanked stock and piercing hand holes in the spun-tapered disc, the improvement comprising the step of placing the disc surface area around each hand hole in compression by embossing the disc from a direction internally of disc con- cavity to form a region surrounding each hand hole which is offset outwardly of disc concavity. -i-

326527

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