This research investigates the outcome of wire EDM process over the taper cross-sectional workpieces of Titanium Alloy (Ti6Al-4V). The outcomes result in better kerf width, surface finish, wire wear and metal removal rates, which can be controlled by taper angle of the workpiece, current, and pulse-off time. The effect of these parameters over the four outcomes of the wire EDM process have been studied in this research. Mathematical models have been developed to predict the outcomes.

Rotary forging is a continuous local pressure plastic forming technology. The equipment to realize the rotary forging technology is called the rotary forging machine. In this paper, the finite element analysis of the frame of the rotary forging machine is carried out, and then the structure and size of the machine frame are optimized. Finally, the experimental results show that the grain size and hardness of the formed workpiece are improved, which shows that the optimization scheme is reasonable.

The shaking of the Rotary forging machine has an important influence on the life of the equipment parts machining accuracy and surface profile of parts, reducing the production efficiency. This paper proposes a method to reduce shaking by changing eccentricity，obtained the design relationship of internal and external sleeves eccentricity, which can reduce the shaking in rotary forging press. This study improving the working state of the rotary forging machine and economic benefits.