According to the structural form, precision gears are mainly divided into the following forms: gear shafts, solid gears, web gears and spoke gears. What kind of precision gears are used under what circumstances? Small diameter gears, either in the form of pinion shafts or solid gears. When the width of the spokes is equal to the width of the teeth, a solid gear structure is obtained, which has a simple structure and is convenient to manufacture. Applicable conditions:
1. The diameter of the tooth tip circle da ≤ 200 mm;
2. There are special requirements for reliability;
3. Noise reduction during high-speed rotation. In order to facilitate assembly and reduce edge stress concentration, the edge of the hole and the edge of the tooth should be chamfered. When the diameter of the addendum circle is damaged, it can be made into a web structure, which can save material and reduce weight.
On the premise of not affecting the strength of the precision gears, in order to effectively reduce the weight of the gear itself, the moment of inertia can be reduced and unnecessary energy consumption can be reduced.
