Structural Design and CNC Machining of Integral Impeller for Automotive Turbocharger

Abstract Integral impeller is a key component of turbocharger. Although the research on structural design and machining of integral impeller has made some progress, The technical route of design and processing of integral impeller for vehicle turbocharger is cumbersome and slightly less efficient. A novel technology route of structure design and CNC machining for the integral impeller is proposed in this paper. Firstly, according to the relevant design criteria, the relevant parameters such as the overall impeller height, the blade height, the impeller inlet diameter, the impeller outlet diameter and the number of blades are obtained. Then the 3D model is created in the CAXA manufacturing engineer. Using CAXA CAM, the tool paths are generated in order to output CNC machining programs. The CNC machining programs are imported into the five-axis machining center for machining the integral impeller. The technology route can effectively improve the design efficiency, reduce the cost of design and manufacturing, and shorten the design cycle to a certain extent.