Prediction of Fine Blanking Tool Deformation to Produce Multiple Turbocharger Vane Levers with Stainless Steel

The use of turbochargers improves engine power, reduces the rate of fuel consumption. The vane lever is an important part of a turbocharger that regulates the volume of hot exhaust gas. Until now it has been produced by a 4 cavity fine blanking tool, but it requires the use of an 8 cavity fine blanking tool for better productivity. In this paper, we conducted structural simulation of an 8 cavity fine blanking tool and predicted the deformation of fine blanking tool elements. The maximum vertical deformation of the die was 0.01222mm and the maximum horizontal deformation of the die was 0.00096mm. This deformation led to a clearance change in the 8 cavity fine blanking tool. According to the simulation results, the calculated clearance was increased to a maximum of 45.9%, decreased to a minimum of 49.0%. Through the fine blanking experiment with the manufactured 8 cavity fine blanking tool, we demonstrated that 8 vane levers could be simultaneously produced by the 8 cavity fine blanking tool.