This paper has studied the defects and deficiencies of corner welder in the domestic and overseas

and has designed a corner welder with solving welding blind area and welding seam tracking. The STM32 single-chip was taken as the controller of the angle welding machine. Step-by-steps electrical machinery was used as the actuation functional element. Finally

through the reasonable mechanical structure

the transformation of traditional angle welding machine was realized. The test welding of the angle welder shows that the weld has no joint length

uniform molding uniformity

simplified operation and improved welding efficiency.