Method for manufacturing a gear-wheel for a rotary displacement

Details Method for manufacturing a gear-wheel for a rotary displacement Method for manufacturing a gear-wheel for a rotary displacement

1975-07-01

1977-07-12

Husar, Francis S.

90 3, 90 5, B23F 520

Patent

active

040346455

ABSTRACT:
An apparatus and method for shaping the teeth on a gear wheel to conform in a close sealing fit with the teeth of a globoid worm wherein a gear wheel blank and tool holder are supported for rotation about non-intersecting, mutually perpendicular axes, the tool holder axis lying in a plane which passes between the front and rear faces of the gear wheel blank. A pair of cutting tools are mounted 180.degree. apart on the tool holder and have cutting edges which extend radially out from the tool holder axis, the two edges being axially separated by a distance equal to the width of a gear wheel tooth. The blank and tools are rotated at velocities which are related by the same ratio as the velocities at which the gear wheel and worm are intended to operate and at the same time the tool holder and blank are fed toward one another, whereupon both sides of the gear wheel teeth are machined in one continuous sequence of undirectional rotational movements.

REFERENCES:
patent: 1431155 (1922-10-01), England
patent: 1934754 (1933-11-01), Wildhaber
patent: 3812760 (1974-05-01), Wildhaber

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