Research On The Key Technology In The Design & Manufacture Of A Type Integral Shell

Numerical Controlled Electrochemical Machining (NC-ECM) is a new kind of manufacturing technology which principle is based on the combination of Electroche- mical Machining (ECM) and Numerical Control techniques. It not only has the advantage of traditional ECM, but also has the advantages of Numerical Controlled Machining (NCM). Through many years'research, NC-ECM can be applied to integral components. Based on the former research, the manufacture of a certain type of aerocraft shell by NC-ECM is studied in this thesis.Firstly, the development situation of integral components is introduced in this thesis, then the modern machining methods of integral components are introduced in classification, through comparing these methods with each other, the status of NC-ECM is affirmed in machining the integral components.In this thesis, the entity modeling of a type aerocraft shell is completed by UG software which has strong function in surface modeling, and the geometrical structure of the shell is analyzed. Based on this, the machining technology of shell are made, a suit of ECM device and it's relative cathode are designed.Four different kinds of electrolyte slots are designed. Simulation analysis of the flow field is made by Fluent to decide which kind of slot will be used in the experiment.The appropriate processing parameters are selected by experiments. The test sample is made. The orthogonal experimental study is made to analyse the effect degree of three main processing parameters to the process accuracy.The preliminary study of pulse electrochemical machining (PECM) is done. It has great advantages on the improvement of the process accuracy and the surface quality.