Blade Machining Path Planning Based on NX Secondary Development
For the machining and repair of aero engine blades,the traditional manual programming method is time-consuming and error-prone,so it is always a challenge to improve the precision and efficiency of blade surface machining.Through the secondary development module of the NX platform and the powerful programming function of VC#,key parameter information(such as normal vector,tangential contact,tool axis,etc.)of the blade model surface is extracted.The machining trajectories of the blade surfaces are planned according to the equal residual height method.You can also plan the position of the cutting contact by changing the bow height error,string height error,maximum stride length,etc.,so as to plan the tool path.The results show that the blade surface trajectory planning system based on NX platform can be applied to blade machining trajectory with different machining parameters,and can automatically plan the trajectory path and ensure the precision of surface machining.
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