Process for making ratchet wheels

Details Process for making ratchet wheels Process for making ratchet wheels

2006-05-02

2006-05-02

Compton, Eric (Department: 3726)

Metal working

Method of mechanical manufacture

Gear making

C029S893340, C029S893350, C029S894000, C029S558000, C409S243000, C409S244000

Reexamination Certificate

active

07036227

ABSTRACT:
A process for manufacturing ratchet wheels including the steps of: forming a cylindrical forging billet by hot or cold forging, the forging billet having a thru hole of inter-communicating recesses which are pre-formed in a forging die; providing a broach having teeth formed thereon; machining the forging billet into a workpiece having a sidewall with two annular grooves on the sidewall; forming a semi-product having a driving recess which is complementary in shape to the teeth by operating the broach through the workpiece along the thru hole; and forming a finished product having a plurality of teeth on a sidewall thereof by milling the semi-product.

REFERENCES:
patent: 1375767 (1921-04-01), Baldus
patent: 2340529 (1944-02-01), Hartman
patent: 2457451 (1948-12-01), Domack
patent: 2537175 (1951-01-01), Viets
patent: 2623418 (1952-12-01), Vaughan
patent: 2774259 (1956-12-01), Caulkins
patent: 5983758 (1999-11-01), Tanner
patent: 6390929 (2002-05-01), Hyatt
patent: 6422053 (2002-07-01), Greuel et al.
patent: 6701768 (2004-03-01), Ling et al.
patent: 2001/0054334 (2001-12-01), Ling et al.
patent: 2002/0148329 (2002-10-01), Ling et al.

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