Multifunctional ejection pin and machining method thereof

The invention discloses a multifunctional ejection pin and a machining method thereof. The machining method comprises the steps of material selection, forming, chamfer manufacturing, grinding, welding, surface treatment and coding. A metal wire with the wire diameter ranging from 0.45 mm to 2.50 mm is taken to be fed into a wire bending machine or a spring machine to be bent to form a decoration portion, a pin body ranging from 30 mm to 35 mm is reserved, the end, away from the decoration portion, of the pin body is subjected to chamfer manufacturing and ground, then the head end and the tailend of the decoration portion are welded, the decoration portion becomes a closed ring, and finally the surface of the ejection pin is subjected to surface treatment and laser coding; laser welding ortin welding is adopted as welding; and surface treatment is polishing or electroplating. The multifunctional ejection pin comprises the decoration portion and the pin body, and the decoration portionand the pin body are of an