Spot welding machines are categorized by the material and thickness of the workpiece being welded: high-power spot welding machines, precision spot welding machines, and microelectronic spot welding machines. They are also classified by the number of weld points simultaneously: single-point, double-point, and multi-point. Furthermore, they are classified by the transmission method of the pressure mechanism: foot-operated, electric motor-cam type, pneumatic type, and hydraulic type.
Spot welding machines are characterized by high production efficiency, low cost, material savings, and ease of automation. Therefore, they are widely used in various industrial sectors such as aerospace, energy, electronics, automotive, and light industry, and are one of the most important welding processes.