Staggered hob

Details Staggered hob Staggered hob

1980-03-05

1982-03-30

Vlachos, Leonidas

Cutters, for shaping

Gear cutting tool

Hob

B26D 112

Patent

active

043221858

ABSTRACT:
A hob which includes a cylindrical body having a longitudinal axis, a plurality of tooth elements each with a top edge portion of the same height arranged in succession along at least one helical line extending around the longitudinal axis of the hob wherein shoulder portions of leading or trailing sides of each of the tooth elements are reduced in their basic contour in staggered fashion, each of the tooth elements including a first shoulder edge portion intersecting the top edge portion at a distance located 0.05 m to 0.1 m from the center line of each of the tooth elements and a first angle of 25.degree. to 45.degree., a second shoulder edge portion disposed adjacent the first shoulder edge portion, and a third shoulder edge portion intersecting the second shoulder edge portion at a distance 0.5 m to 1.0 m from the top edge portion at a second angle of 3.5.degree. to 10.degree. wherein m represents a module.

REFERENCES:
patent: 1393818 (1921-10-01), Olson
patent: 1512657 (1924-10-01), Wildhaber
patent: 1512798 (1924-10-01), Ramsay et al.
patent: 1648470 (1927-11-01), Anderson
patent: 1763983 (1930-06-01), Olson
patent: 1795093 (1931-03-01), Olson
patent: 1812811 (1931-06-01), Strauss
patent: 2869218 (1959-01-01), Lindner
patent: 3374518 (1968-03-01), Bentjens
patent: 3688368 (1972-09-01), Bodem
patent: 3715789 (1973-02-01), Johnson
patent: 3766618 (1973-10-01), Janninck
patent: 3863317 (1975-02-01), Taniguchi et al.
patent: 3911545 (1975-10-01), Ohashi et al.

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