Wave Generator for Wave Gear Device
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United States of America Patent
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N/A
Issued Date -
Jul 15, 2010
app pub date -
Jan 5, 2010
filing date -
Jan 13, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The flexible bearing of the wave generator for a wave gear device is a deep-groove ball bearing in which an outer race and an inner race form an annular flexible bearing ring capable of bending in a radial direction. A ball diameter Da is set to be 5 to 15% greater than that of each model of the currently available product, and dimensions of orbital plane radii ro, ri of the inner and outer races are set so that the ratio ro/Da of the orbital plane radius ro of the inner race and the ball diameter Da, as well as the ratio ri/Da of the orbital plane radius ri of the outer race and the ball diameter Da, are both 0.8 to 2% less than those ratios in each model of the currently available product. When the ball diameter and the orbital plane radii are thus set, it is possible to substantially extend the service life of the flexible bearing.
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