Friction stir spot welding is a new solid-state point connection technology developed on the basis of friction stir welding. Compared with traditional melting spot welding, such as resistance spot welding, it has the advantages of low energy consumption, no pollution, and high connection strength.The backfill robotic friction stir spot welding system gives full play to the flexibility of the robotic, greatly expands the application scenarios of friction stir spot welding, and has a broad applica...