Poly-V pulley formed of sheet metal and method and apparatus for

Details Poly-V pulley formed of sheet metal and method and apparatus for Poly-V pulley formed of sheet metal and method and apparatus for

1986-03-07

1987-10-06

Larson, Lowell A.

Metal deforming

By use of tool acting during relative rotation between tool...

With metal deformation of different type

29159R, B21H 104

Patent

active

046974458

ABSTRACT:
A poly-V pulley formed from a cup-shaped sheet metal blank by axially compressing the cylindrical portion while confined in dies to form a thickened cylindrical portion, with radially pressurized dies to prevent buckling or corrugating, and roll forming the thickened portion into the external poly-V grooves and the opposite internal surface with axially extending grooves of a convex and concave shape for maintaining the accuracy of shape and size of the poly-V grooves.

REFERENCES:
patent: 4518374 (1985-05-01), Kanemitsu

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