1. Functional requirements of the positioner: It mainly means that the merchant needs to clarify what actions the positioner should be able to achieve, such as translation, lift or rotation. If it is a translation, it is a linear translation or a curved translation; if it is a rotary motion, it is a continuous rotation or an intermittent rotation;
2. The requirements for the movement speed must be clear whether it is fast or slow, whether it is constant speed or variable speed, and whether it is stepped or continuously variable;
3. Requirements for transmission stability and accuracy: The automatic welding positioner requires high transmission accuracy, and worm drive and gear drive can be selected.