The crowning curve is exponential function which causes the contacting point to move toward the tooth width end as the displacement increases and the radius of curvature becomes larger as the point on the curve approaches to the tooth width end, so that even when the contacting gear number decreases when displaced, {HEAD ~ the increase} in {TAIL ~ the contacting stress} is suppressed and a larger power can be transmitted as compared to the conventional design 
The crowning curve is exponential function which causes the contacting point to move toward the tooth width end as the displacement increases and the radius of curvature becomes larger as the point on the curve approaches to the tooth width end , so that even when the contacting gear number decreases when displaced , { HEAD ~ the increase } in { TAIL ~ the contacting stress } is suppressed and a larger power can be transmitted as compared to the conventional design
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