Normally, when designing the electric drive of welding positioner, it is necessary to select the mechanical transmission mode and the corresponding transmission mechanism from the motor to the worktable, but before making the selection, it is also necessary to pay attention to the following points according to the specific requirements of the transfer and welding process, as well as the characteristics:

1. For the requirements of mechanical function of welding positioner, it mainly refers to what actions can be achieved by welding positioner, such as lifting, translation or rotation, if translation, then it is the translation of curve or straight line; if it is the movement of rotation, it is intermittent turnover or continuous rotation.

2. What are the requirements on the speed of movement? Speed must be clearly marked as variable speed or constant speed, fast or slow speed, as well as infinite speed change and step-by-step speed change.

3. Overload and self-locking protection, as well as the requirements of vibration absorption capacity, under normal circumstances, lifting and turning have the danger of transmission. In order to be more secure, the transmission mechanism is better to choose with self-locking function, and there are many transmission modes and transmission mechanisms. It is better to know the size and power of transmission beforehand.

4. Accuracy and transmission stability requirements, if it is an automatic welding positioner, the transmission requirements and accuracy will be higher, it is best to choose gear transmission, or worm transmission mode.