FASTENTING STRUCTURE FOR FLEXIBLE EXTERNAL GEAR AND SHAFT MEMBER IN STRAIN WAVE GEARING DEVICE

Title:

FASTENTING STRUCTURE FOR FLEXIBLE EXTERNAL GEAR AND SHAFT MEMBER IN STRAIN WAVE GEARING DEVICE

Document Type and Number:

WIPO Patent Application WO/2016/088277

Kind Code:

A1

Abstract:

A boss-side fastening surface (12) formed on a boss (7) of a flexible external gear (3) of a strain wave gearing device and a shaft-side fastening surface (13) of an output shaft (11) are fastened coaxially with bolts (15). The boss-side fastening surface (12) is a convex fastening surface provided by two symmetrical inclined surfaces that intersect at a prescribed angle with a diameter line (16) of the surface as the ridgeline. The shaft-side fastening surface (13) is a concave fastening surface provided by two symmetrical inclined surfaces that intersect at a prescribed angle with a diameter line of the surface as the trough line. The angle of inclination of the inclined surfaces is set to a value in the range of 2°-16°. Transmitted torques at least equal to those for combined bolt and pin fastening can be secured with bolt-only fastening.

Inventors:

HOSHINA TATSURO (JP)
KOBAYASHI MASARU (JP)
NAGAI AKIRA (JP)

Application Number:

PCT/JP2014/082334

Publication Date:

June 09, 2016

Filing Date:

December 05, 2014

Export Citation:

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Assignee:

HARMONIC DRIVE SYSTEMS (JP)

International Classes:

F16H1/32

Domestic Patent References:

WO2014181373A1

2014-11-13

Foreign References:

JPS6140513U	1986-03-14
JPS6187489U	1986-06-07
JP2002339990A	2002-11-27
JPH0191150U	1989-06-15
JP2009275528A	2009-11-26

Other References: