Machine fitted out with two numerical axes : one axis assembling / welding. one axis controls / marking. Manual loading of the components and transfer of the welded subassembly from the welding tool to the checking tool. ......Machine fitted out with two numerical axes : one axis assembling / welding. one axis controls / marking. Manual loading of the components and transfer of the welded subassembly from the welding tool to the checking tool. Successive performing of two spot welds using a 1000 Hz medium frequency power source. Manual unloading of the parts into a dedicated tray and in a protected housing.