Inner roller and outer roller in internal-meshing planetary gear

Details Inner roller and outer roller in internal-meshing planetary gear Inner roller and outer roller in internal-meshing planetary gear

1999-03-30

2000-12-05

Wright, Dirk

Planetary gear transmission systems or components

Planet periphery surrounds axis of interacting gear

Circumferentially spaced connector pins

F16H 132

Patent

active

061559504

ABSTRACT:
An inner roller 30 (in FIG. 2) for use in an internal-meshing planetary gear construction has its inner-peripheral wall 32 formed into a shape which is brought closer to a regular polygon of n sides (where n denotes an integer of at least 3, and n=3 holds in the illustrated example). Lubricating oil is reserved in clearances H1 defined near the vertices of the regular triangle, and an inner pin 7 is retained in light touch with the three middle points P1-P3 of the respective sides of the regular triangle. Thus, the reservation of the lubricating oil and the retention of the inner pin 7 free from backlash are made consistent, thereby to relieve the backlash of the planetary gear construction and to enhance the durability thereof. The shape of the inner-peripheral wall 32 closer to the regular polygon of n 7 is obtained in such a way that the inner-peripheral wall 32 is subjected to a burnishing work in the state in which depressive forces (deforming forces) based on chucking jigs are applied to the circumferential equidistant positions of the cylindrical blank of the inner roller 30, and that strains (residual strains) remaining after the burnishing work are further enlarged by a heat treatment.

REFERENCES:
patent: 3795957 (1974-03-01), Steusloff
patent: 3816892 (1974-06-01), Karmann et al.
patent: 3927449 (1975-12-01), Gibble et al.
patent: 5148966 (1992-09-01), Minase et al.
patent: 5522124 (1996-06-01), Depperman
patent: 5992020 (1999-11-01), Minegishi et al.

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