Cylindrical gear with helical teeth

Details Cylindrical gear with helical teeth Cylindrical gear with helical teeth

1978-09-25

1981-10-13

Husar, C. J.

Machine element or mechanism

Gearing

Teeth

74466, F16H 5508

Patent

active

042941326

ABSTRACT:
A cylindrical gear wheel having helical teeth with different pitch diameters for the left hand and right hand sides of the teeth and convergent line of teeth in which one side of the teeth are characterized by positive values of addendum modification while the other side of the teeth has negative values of addendum modification. By positive addendum modification is meant an addition to the nominal pitch diameter to obtain the pitch diameter at one side of a tooth and by negative addendum modification is meant a substration from the nominal pitch diameter to obtain the pitch diameter of the other side of the tooth. In the range of normal values of tooth pitch (mn) from 2 to 6 mm or normal tooth module the angular difference of inclination between the left hand and right hand sides of the teeth is within the range of 30' to 3.degree. for pitch diameters up to 500 mn and the addendum modification values are in the range from 0.01 to 4 mn. For a given angular difference of inclination between the left hand and right hand sides of the teeth, the addendum modification value will increase for increasing pitch diameter and for increasing average angle of tooth line inclination.

REFERENCES:
patent: 2098864 (1937-11-01), Forster

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