The mathematical model of shaper transmission mechanism is set up.The kinematic characteristic of shaper is analyzed.Introducing elliptical gear into transmission mechanism of shaper is presented.Compared with the complex-shape method
the result shows that velocity stationarity of push stroke is improved evidently and the time of non-working stroke is shortened obviously after using shaper optimized by elliptical gear.And the effect of eccentricity on velocity error of push stroke and time of non-working stroke is clarified.At last
for simplifying structure
the elliptical gear mechanism is placed into reducer.The corresponding elliptical gear reducer is designed.The model of elliptical gear and the virtual assembly of elliptical gear reducer are achieved
which facilitates the application of elliptical gear reducer in shaper.