Headed boss forming die

The utility model provides an upsetting boss forming die which comprises an upsetting boss male die installed on an upper die base and a female die insert installed on a lower die plate, the upsetting boss male die and the female die insert are matched in shape and correspond to each other in position, a male die insert is arranged in the upsetting boss male die and is right opposite to a middle hole of the female die insert, and the upsetting boss male die and the female die insert are arranged in the upsetting boss male die. And a movable positioning nail is arranged in the middle hole of the female die insert and can move up and down. According to the utility model, the processing problems of low processing efficiency, high rejection rate and high part cost of the threaded ferrule boss are solved, the cold-heading boss is good in quality, stable in size and low in rejection rate, the production cost is reduced, the production efficiency is improved, and the cold-heading die is particularly suitable for par