What are the features of a short toothed gear? How to determine gear with short teeth?
The normal gear (standard gear), the addendum coefficient is 1, the top clearance coefficient is 0.25; the short tooth gear, the addendum coefficient is 0.8, and the top clearance coefficient is 0.3. The full tooth ratio of a short toothed gear is shorter than that of a normal toothed one. That's it。
Short gear features: short gear addendum coefficient 0.8, the top 0.3 short gap coefficient; gear, can use a larger positive displacement can be reduced to the minimum tooth number of gears (less than 17 teeth), without causing pitch, undercutting, etc., but will reduce the overlap coefficient of gear meshing.Standard gear characteristics: addendum coefficient 1, top clearance factor 0.25.Determine the short tooth gear method: its full tooth ratio of normal gear short, you can also check the "mechanical workers cutting manual" to determine the teeth of the whole university.
Short teeth can reduce the minimum number of teeth to avoid undercutting, for example, 17 is the smallest number of normal gear tooth, short teeth may be 14 teeth, but will reduce the coincidence degree of short teeth. Flat width of a tooth with short teeth
