Lubricant supplying mechanism for a wave gear drive

Details Lubricant supplying mechanism for a wave gear drive Lubricant supplying mechanism for a wave gear drive

1997-10-21

1999-11-16

Hannon, Thomas R.

Lubrication

Systems

Gearing

74467, 74640, F16H 132, F16H 5704

Patent

active

059840480

ABSTRACT:
A wave gear drive (1) has a silk-hat shaped flexible external gear (12) comprising a cylindrical body (13), a circular diaphragm (14), a circular boss (15) formed integrally on the diaphragm (14), and external teeth (16) formed on the body (13) at a side of an open end (13a) thereof. The boss (13) of the flexible external gear, a cross roller bearing (7) and the rigid internal gear (11) are arranged between first and second end plates (2, 3) so as to define a substantially sealed inside space of the wave gear drive (1). A resilient seal ring member (8) is mounted on the open end (13a) of the flexible external gear to divide the inside space into an inside portion (9) where a first lubricant having a high viscosity is supplied and an outside portion (10) where a second lubricant having a low viscosity is supplied. These lubricants are prevented from being mixed with each other during operation, thus proper lubrication to portions of the teeth (11a, 16) of the gears (11, 12) and to a wave bearing (19) of the wave generator (17) can be maintained.

REFERENCES:
patent: 3523488 (1970-08-01), Robinson
patent: 4216677 (1980-08-01), Tuzson
patent: 4421329 (1983-12-01), Jelinek
patent: 4585236 (1986-04-01), Simmons et al.
patent: 5676221 (1997-10-01), Renk et al.
patent: 5775178 (1998-07-01), Asawa et al.

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