Aircraft Engine Blade CNC Milling Method

Blade of Aero—engine is a type is one of engine core parts; It is playing the steam energy transformation for the mechanical energy role. The engine performance is decided to a great extent by the leaf blade profile design and the manufacture level. Blade's in engine function mission and the work characteristic, had decided the leaf blade is in the engine the shape complex (three-dimensional space curved surface), the size span big (length from 20mm to 700~800mm), the stress bad, the load bearing biggest components. It in high temperature, high pressure and under the high-speed run revolves, usual need alloy degree very high materials and so on heat strong steel, titanium alloy as well as heat-resisting alloy make; In order to satisfy the engine high performance, the work security, reliable as well as the life request, the leaf blade must have the precise size, the accurate shape and the strict superficial integrity. Therefore leaf blade's technique of manufacture is in the mechanical manufacturing industry of most complex technologies.Blade is a type of free form surface part. Its surface shape and manufacture precision decide a blower's thrust efficiency and noises. The research about manufacture method will help to improve the manufacture precision and efficiency of this type of part. The traditional manufacture method of an axis flow blade is by rough cut with general milling machine plus a mass of manual polish. It is laborious and time-wasting and the precision can't be guaranteed. With the development of NC technology, at present, the machining of an axis flow vane is often finished by a NC machining with ball-end cutter usually. But the machining accuracy and efficiency of programming still not ideal. How to bring into full play the potential of CNC Machining, rotor blades to improve the accuracy and efficiency of processing at the moment is a CNC Machining research priorities.Based on the conventional machining process leaves the description of the processing and theoretical analysis of the advantages and disadvantages of various processing programs, the processing path of the reasonable production, and use of UG Software Implementation of the above process and this leaves the programming process parts made template for similar call, again similar leaves NC programming, we can reduce the programming time and improve programming efficiency; procedure can also reduce the risk of errors and improve programming quality, but also reduces costs . Also in the use of NC programming template, can also reduce the training time for new employees to grasp programming technology as soon as possible, alone assume their duties.