Process for producing a pulley for a continuously variable...

Details Process for producing a pulley for a continuously variable... Process for producing a pulley for a continuously variable...

2011-06-14

2011-06-14

Chang, Rick K (Department: 3726)

Metal working

Method of mechanical manufacture

Pulley making

C029S892000, C474S008000, C474S174000, C474S188000

Reexamination Certificate

active

07958635

ABSTRACT:
A process for producing a pulley for a belt drive CVT, including subjecting tapered surfaces of a preform of at least one of input and output pulleys to surface hardening, subjecting the surface-hardened tapered surfaces of the preform to hard turning to form microgrooves radially spaced from one another thereon, between which microprojections are formed, and reducing a height of the microprojections. Alternatively, a process for producing a pulley for a belt drive CVT, including subjecting tapered surfaces of a preform of at least one of input and output pulleys to surface hardening, subjecting the surface-hardened tapered surfaces of the preform to shot peening, and subjecting the shot-peened tapered surfaces of the preform to finishing to form microgrooves having a substantially equal pitch thereon.

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