Extended flexspline arrangement

Details Extended flexspline arrangement Extended flexspline arrangement

1983-06-23

1985-06-25

Herrmann, Allan D.

Machine element or mechanism

Gearing

F16H 3300

Patent

active

045246394

ABSTRACT:
A harmonic drive motion transmitting mechanism having a housing encircling a circular spline within which is journalled a flexspline. The flexspline has an annular array of gear teeth thereon, which flexspline has an inner bore having a diameter defined as D. The circular spline also has an annular array of gear teeth mateable with those of the flexspline. A wave generator is mounted within the flexspline. The flexspline has a lip which extends longitudinally beyond the distal edge of its annular array of gear teeth by 10% to 40%D. The lip is of radially thickening dimensions from immediately adjacent the outer edge of the annular array of gear teeth thereon, and from a thickness of about 1%D up to a thickness of about 3%D at the distal edge of said flexspline, to minimize the skewing of the ellipsoidal deflection wave of the flexspline.

REFERENCES:
patent: 3196713 (1965-07-01), Robinson
patent: 3427898 (1969-02-01), Mayer
patent: 4216677 (1980-08-01), Tuzson
patent: 4365523 (1982-12-01), Numazawa et al.

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