Aw Series Pneumatic Actuator,Pneumatic Actuator Butterfly,Pneumatic Double Acting Actuator,Pneumatic Actuators For Industrial ZHEJIANG KINKO FLUID EQUIPMENT CO.,LTD , https://www.kinkoflow.com 1. Symmetrical turntable The so-called symmetrical turntable is a circular indexing device capable of arbitrarily dividing the circumference and having geometric symmetry. According to the mechanical principle, the indexing device is a pair of flat flat-top gear pairs with a speed ratio of 1. Taking the polar coordinates as the angle reference, FIG. 1 is a schematic diagram of the meshing positioning of the (?) type symmetrical turntable.