In a pair of internal gear pairs, where does the internal gear select the positive displacement coefficient? Under what conditions should the negative displacement coefficients be chosen?
I used for a long time in collecting about how to optimize the internal meshing modification coefficient, the general data not introduced, the book is mentioned in the tooth surface relative slip rate, put forward in general does not move relative to the gear tooth surface slip and planetary gear planetary gear on the contrary, in this sense, should be based on the tooth surface relative slip rate as the objective function design of radial displacement coefficient is reasonable in design of engagement.
In the sun gear, planetary gear and internal gear three links, the first design always engaged pair of sun gear and planetary gear, their teeth are usually less, the possibility of selection is changed greatly, but also reasonable, when the fixed outer meshing displacement coefficient, internal gear will no longer pick then, the displacement coefficient is only only.
If the small sun wheel is large, the planetary gear and inner gear are all positively shifted; if the number of small sun gear is smaller than the planet wheel, both the planetary gear and inner gear ring are negatively changed. Many planetary gear designs are written in books.
