Precise back taper forming die of transmission gear combining teeth

• Main Authors: WANG BAOYU, JI HONGCHAO, LI SHILIN
• Format: Patent
• Language: Chinese; English
• Published: 06.11.2018
• Subjects: FORGE FURNACES; FORGING; HAMMERING; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PRESSING METAL; PUNCHING METAL; RIVETING; TRANSPORTING

The invention relates to the field of metal plastic forming, in particular to a precise back taper forming die of transmission gear combining teeth. The precise back taper forming die comprises an upper pressing sleeve, a material pressing rod, a material pressing spring, a lower pressing sleeve, an extrusion die, a pressing die plate, a pressing sleeve reset spring, a reset rod, a die reset spring and a base. The material pressing rod and the material pressing spring coordinate with each other to elastically limit a blank so that up-down floating of the blank in the forming process can be prevented. The lower pressing sleeve and a tooth-shaped die coordinate with each other through inner pyramid faces, and conversion of pressure directions is achieved. In addition, the tooth-shaped die and the lower pressing sleeve or the tooth-shaped die and the base strictly limit the circumferential movement of the die in the forming process through guide rails. According to the tooth-shaped die, every one-three teeth on