Harmonic drive flexspline manufacture

Details Harmonic drive flexspline manufacture Harmonic drive flexspline manufacture

1989-03-29

1990-06-19

Wright, Dirk

Machine element or mechanism

Gearing

2989334, F16H 3300

Patent

active

049342126

ABSTRACT:
A strain wave gearing device comprising a ring gear having internal axially extending teeth and a strain gear produced from a strain gear blank having constant thickness to the cylindrical and diaphragm portions. The cylindrical portion has external axially extending teeth extending around an annular portion adjacent the open end of the strain gear for engaging with the internal teeth of the ring gear (the number of external teeth on the strain gear being different than the number of internal teeth on the ring gear) and a wave generator is located within and matingly engages with the strain gear. The diaphragm portion is reduced in final thickness from the uniform blank thickness to about one-half the blank thickness by machining, after the strain gear has been produced from the blank. The wave generator adapted to be rotatively driven relative to the strain gear whereby relative rotational movement will occur between the strain and ring gears.

REFERENCES:
patent: 3473211 (1969-10-01), Lindell
patent: 4817457 (1989-04-01), Carlson

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