Planetary gear

Details Planetary gear Planetary gear

1981-09-03

1984-03-06

Herrmann, Allan D.

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

74640, 74461, F16H 128, F16H 5514

Patent

active

044346824

ABSTRACT:
The invention relates to a planetary gear having two adjacent identical central wheels of different pitch and a planet wheel whose pitch is equal to that of a virtual tooth row formed by the central wheel teeth. The teeth of the planet wheel extend into the tooth gaps between the virtual tooth rows. The planet wheel is guided and driven by a rotary disk. At least two of the three wheels have pivotable teeth. The teeth of both the central wheels and the planet wheel are of substantially triangular cross section with plane tooth profiles. It is a main objective of the invention to provide a planetary gear permitting the flank angles of the virtual tooth gaps to be adapted to the profile angle of the planet wheel teeth, in particular, in order to transmit large torques and/or also in order to achieve low speed ratios. According to the invention, the pivotable teeth of at least one central wheel are arranged on journals.

REFERENCES:
patent: 1591794 (1926-07-01), Stevens
patent: 1744576 (1930-01-01), Rhett
patent: 3214999 (1965-11-01), Lapp
patent: 4099427 (1978-07-01), Fickelscher
patent: 4194415 (1980-03-01), Kennington et al.

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