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航空发动机是一种特殊的高科技产品,航空动力技术已经成为一个国家科技水平的重要标识之一。发动机的四大转子叶片外径要求在组合状态下进行加工,且要求在工作状态下进行,即转子高速旋转叶片完全甩开的情况下得到叶片外径尺寸。传统的加工方法采用外圆磨床或普通车床改制的磨床,利用模拟盘螺栓顶紧叶片底面或在叶片底面塞塞片的方法将叶片固定到工作位置的方法来模拟叶片甩开的状态。本文主要从叶片的不同结构出发,总结其叶片外径的加工方法,重点针对叶片与轮盘底面间隙较大的叶片外径加工方法进行创新,设计一种涨紧装置将转子叶片涨紧以模拟叶片的工作状态。此种涨具应用于各类转子叶片的外径加工,可作为一种通用的工装工具加以推广。
Aeroengine is a special kind of high-tech product. Aerodynamic technology has become one of the most important national scientific and technological indicators. The outer diameter of the four rotor blades of the engine is required to be machined in a combined state and requires that the outer diameter of the blade be obtained under working conditions, that is, the outer diameter of the blade is completely thrown off by the rotor rotating at a high speed. The traditional machining method adopts cylindrical grinder or ordinary lathe modified grinder to simulate the state that the blade is thrown off by fixing the blade to the working position by simulating the bottom surface of the blade screwed on the blade or the plug on the bottom of the blade. Based on the different structures of the blades, this paper summarizes the processing methods of the outer diameter of the blades, and focuses on the innovation of the blade outer diameter machining method with a large gap between the blades and the bottom of the roulette. A tensioner is designed to tighten the rotor blades to simulate Blade work status. Such a wide range of rotor blades used in the outer diameter of processing, tools can be used as a common tool to be promoted.