This paper introduces the design principles of keyslot and hubof plastic gear and common methods of structural design.
介绍塑料齿轮键槽和轮毂的设计原则，以及常见的结构设计方法。
2
The gear spins on the wheel hub, drives the other gears, which, according to the number of the teeth, spin faster or slower than the original one.
齿轮在轮毂或轴上旋转，带动其它一些齿轮，后者则可以比前者转得快或慢，这取决于基本齿轮的齿数。
3
The rotation of this gear on a hubof shaft drives other gears which may rotate faster or slower, depending upon the number of teeth on the basic wheels.