Design And Analysis Of NC-ECM Machine For The Complex Integral Component

Closed-type impeller usually applications in aerospace engines,use of closed components can improve the efficiency and life of the engine.However,closed components such as closed impellers have only their intake and exhaust openings open,the rest are closed.Therefore,the processing of such parts of the runner is more difficult,At the same time,most of the materials are high temperature alloys,If using traditional mechanical processing,on the one hand,the tool wear faster,lower processing efficiency,higher economic costs;On the other hand,there is a dead center of the machining tool movement for a complicated three-dimensional warped flow path,Tool accessibility is poor.Electrochemical machining(ECM)as a special processing technology,the processing tool cathode is not in direct contact with the workpiece,it has no loss of cathode tools,there is no cutting force,processing efficiency,surface quality advantages.Particularly suitable for machining difficult to cut materials and complex shapes of the workpiece,Computer numerical control(CNC)Electrochemical machining combines the advantages of ECM and CNC technology,Particularly suitable for processing such closed-type monolithic components,Can greatly improve the flexibility of ECM,This topic design a CNC machining machine,The main processing object for the closed whole impeller similar closed monolith.Mainly complete the work(1)Design of the machine tool.Analysis of the characteristics of the overall components and ECM processing requirements Determine the form of machine movement,Completed the CNC ECM machine tool program design and layout of machine tool structure design,Machine tool is selected three moving axis and two rotating axis arrangement,Machine tools include based,column,mobile workbench,rotary table,work boxes and other components.(2)Machine body structure design used 3D modeling software Pro / E to complete 3D modeling of machine-related parts,Such as feed system,workbox assembly and so on,sloved the problem that there is a gap in the sealing of the moving workbench,a fully sealed guide rail protection device.(3)Simulation and optimization of key components.Use ANSYS Workbench software to analyze machine tool stress during CNC machining,Get the biggest machine deformation and stress,And the modal analysis of the machine tool to get the six-order machine natural frequency and vibration mode,For bed,column and other components using topology optimization analysis,The main components of the machine design more reasonable.