Patent ID: 9656320
Date: 2017-05-23
CPC Classifications: B21J,B21K,B23P,F02F,F16J,Y10T

Claim:
1. A method for simultaneously producing a first piston part and a second piston part via a forging device, comprising: an upper die, at least one intermediate die and a lower die, and placing a first billet between the upper die and the intermediate die, and placing a second billet between the intermediate die and the lower die, moving the upper die and the lower die in opposite directions toward each other, whereby the first piston part is forged from the first billet and the second piston part is forged at the same time from the second billet, and wherein the intermediate die is secured in a predefined position during the moving of the upper die and the lower die toward each other, moving the upper die and the lower die apart, and removing the piston parts, wherein the intermediate die is held in the predefined position at least until the step of removing the piston parts.