Track Programming Of The Cutting Contact Points For The Blade Spiral Machining

The blade is one of the important parts of aeroengine. Efficiency and precision are important for the blades' machining. In this thesis, two spiral machining methods are proposed based on the characteristic of blade. One is isoparametric spiral machining, and the other is channel spiral machining.In the thesis, tracks programming of the cutting contact points are described in detail for the above two machining methods, including the key techniques of the determination of path interval and step length, the calculation of cutting contact point, and the interference disposal of the part boundaries and the island, which provide the foundation for the improve of the blades' machining efficiency and quality. As a result, the spiral cutting contact points' tracks are successfully created on the surface of the blade for 4 or 5 axis high speed milling,It is shown that the spiral cutting contact points' tracks generated by both methods can satisfy the calculation of the cutter location with perfect simulation results.