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本部发展了一种用以加工涡轮增压器的压气机叶轮和离心式压气机叶轮的新工艺和数控程序。这种加工方法使被加工的叶轮比用诸如蜡模铸造、压力成型等方法的加工具有更高的精确性。根据叶片成型的特性,把这些叶轮划分为四种图形,并制定出数控程序,以求得每种图形刀具行走的轨迹。其中一种是最基本的径向元件叶轮,主要用于导风轮,其他的则是用于加工更复杂的高效率压气机叶轮。选作叶轮的材料往往加工性能较差,比如钛合金、奥氏体钢、镍基合金等,不容易加工成型,而我们又必须使用直径较小的端铣刀来加工,所以其切削刚性又很差。为此,本部改进了端铣刀及相应的夹具,选用了最佳的加工条件,因而成功地加工出了高质量的叶轮。
Our department has developed a new process and NC program to process the turbocharger compressor impeller and centrifugal compressor impeller. This method of processing results in machined impellers with higher accuracy than machining with methods such as wax casting, pressure forming and the like. According to the characteristics of the blade forming, these impellers are divided into four kinds of figures, and a numerical control program is made to obtain the trajectory of each graphical tool walking. One of them is the most basic radial impeller, mainly used for wind guide wheels, while others are used to process more complicated high-efficiency compressor impellers. Materials selected for the impeller are often poor processing performance, such as titanium, austenitic steel, nickel-based alloys, not easy to shape, and we must use the smaller diameter end mill to process, so the cutting rigidity Very poor. To this end, the Department improved the end mill and the corresponding fixture, the selection of the best processing conditions, which successfully processed a high-quality impeller.