Integrated cold heading forming die for brake rivet

• Main Author: LI CONGJIE
• Format: Patent
• Language: Chinese; English
• Published: 23.06.2020
• Subjects: FORGE FURNACES; FORGING; HAMMERING; MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES,RIVETS, BOLTS OR WHEELS; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PRESSING METAL; PUNCHING METAL; RIVETING; TRANSPORTING

The utility model discloses an integrated cold heading forming die for a brake rivet, which is used for carrying out integrated cold heading forming on the brake rivet through a first die, a second die, a third die and a fourth die, and a cylindrical bar preformed part e is stamped and cold-headed in the first die to form a rivet rod, so that a preformed part a is formed; the preformed part a is conveyed into a second die through a conveying device, the preformed part a is stamped and cold-upset in the second die to form a prototype nail head, and a preformed part b is formed; the preformed part b is conveyed into a third die through a conveying device, the preformed part b is stamped and cold-upset in the third die to form a nail head, and a preformed part c is formed; the preformed partc is conveyed into a fourth die through a conveying device, the preformed part c is stamped and cold-upset in the fourth die to form a nail tail, and a formed part d is formed; the brake rivet is formed in an integrated cold