Self-locking dual worm gear and the tools needed to produce it

Details Self-locking dual worm gear and the tools needed to produce it Self-locking dual worm gear and the tools needed to produce it

1994-08-19

1996-06-04

Herrmann, Allan D.

Machine element or mechanism

Gearing

Directly cooperating gears

2989331, 74458, 209 48, F16H 5508, B23F 1300

Patent

active

055222781

ABSTRACT:
A self-locking dual worm gear with parallel axes and linear contact for the worms with involute herringbone gears is characterized by the fact that the cross sections for curvature radii p.sub.nm1 and p.sub.nm2 and the longitudinal sections for curvature radii p.sub.xm1 and p.sub.xm2 of the worm profile are always determined at the point of contact M for the teeth and with the following equations:

REFERENCES:
patent: 2553383 (1951-05-01), Roano
patent: 2553384 (1951-05-01), Roano
patent: 2973660 (1961-03-01), Popper
patent: 3216273 (1965-11-01), Colmer, Jr.
patent: 3247736 (1966-04-01), Roth
patent: 3481215 (1969-12-01), Howell
patent: 3776060 (1973-12-01), Pessen
patent: 4858487 (1989-08-01), Mercier
Product Engineering; Article titled Twinworm Gear; Jan. 18, 1960; pp. 39-43.
"Selbsthemmendes Doppelschraubgetriebe" Konstruktion Bd. 44 (1992) No. 10, p. A28.
Opitz, Handbuch, Verzahntechnik, VEB Verlag Technik, Berlin, Jg. 1973, pp. 206-207.

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