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闭式叶轮是弹用发动机的关键零部件之一,针对其数控加工问题,研究了一种粗加工方法,其中包括两个新算法:分层面驱动法,曲面法矢量调整法。这两种新算法保证了刀轴矢量光顺性,运算量小,而且能够保证刀具不会与零件发生干涉。该方法主要过程为计算腔体的分界面,逐层加工的分层面,以及计算刀轴矢量。并用UG二次开发工具grip编写加工软件实现其算法,所得数控加工程序通过VERICUT仿真,刀具没有与零件发生碰撞,证明其方法可行。
Closed impeller is one of the key parts of the missile engine. Aiming at its numerical control machining problem, a kind of rough machining method is studied, including two new algorithms: faceted method and surface method vector method. These two new algorithms ensure the vectoring of the tool axis and reduce the computational complexity and ensure that the tool does not interfere with the part. The main process of this method is to calculate the interface between cavities, stratify layer by layer, and calculate the tool axis vector. And use UG secondary development tool grip to write processing software to realize its algorithm. The obtained numerical control machining program through VERICUT simulation, the tool does not collide with the parts, prove its method is feasible.