Welding robots are industrial robots dedicated to welding tasks, including cutting and spraying, and they consist of two parts: the robot itself and the welding equipment. The robot is made up of the robot body and the control cabinet (hardware and software). For the welding equipment, for example, arc welding and spot welding consist of a welding power supply (including its control system), a wire feeder (for arc welding), and a welding torch (clamp). Welding robots come in three types: hydraulic, pneumatic, and electric.

Hydraulic Transmission: Refers to the power source (engine or electric motor) that drives the hydraulic pump to produce pressurized oil, which then powers the hydraulic motor, generating the required power for the machinery.

(2) Pneumatic-driven welding robots for switch and sequence control. Compared to hydraulic drives, pneumatic drives are easily achieved at high speeds due to the low viscosity of compressed air. They can reduce power consumption by utilizing a centralized air compressor station. The equipment operates cleanly, without environmental pollution, in high temperatures; air is abundant and less expensive than oil, making pneumatic drive components more cost-effective than hydraulic ones.

(3) Electric motor drives can be categorized into standard AC motor drives, AC and DC servo motor drives, and motor drives. As material performance improves, so does the performance of electric motors. They are easy to use, which is why robotic drives are increasingly being replaced by motor drives.