非接触式喷嘴旋流槽测量系统的搭建与实现  

Establishment and Realization of Non-Contact Measuring System for Swirl Slots of Fuel Nozzles

作　　者：毕超[1] 鲍晨兴 雷雯铭 刘勇[1] BI Chao;BAO Chenxing;LEI Wenming;LIU Yong(Aviation Key Laboratory of Science and Technology on Precision Manufacturing Technology, Beijing Precision Engineering Institute for Aircraft Industry,Beijing 100076,China)

机构地区：[1]北京航空精密机械研究所精密制造技术航空科技重点实验室,北京100076

出　　处：《传感技术学报》2018年第9期1444-1449,共6页Chinese Journal of Sensors and Actuators

基　　金：民用飞机专项科研项目(MJ-2015-G-087)

摘　　要：针对航空发动机燃油喷嘴组件的旋流槽特征的精密快速检测难题,采用锥光偏振全息测量技术、多轴联动定位技术与专用夹具技术相结合的方式,搭建了非接触式的喷嘴旋流槽测量系统,可以实现喷嘴旋流槽的槽深、旋流角度和槽宽等几何参数的高效扫描测量。首先,分析了上述3项参数的测量与计算原理,并推导出了各项参数的数学表达式;然后,对测量系统的机械本体、光学测头、运动控制系统和喷嘴专用的免校准加工及检测专用夹具等组成部分进行了详细介绍;最后,应用该系统对某喷嘴样件的旋流槽特征进行了多次重复测量。实验结果表明,本文所搭建的非接触式喷嘴旋流槽测量系统能够完成既定的测量任务,而且系统的重复性测量精度能够满足检测任务需求,因而可以作为一项喷嘴组件结构尺寸检测的技术解决方案。To solve the difficulties in accurate and rapid inspection of swirl slots of fuel nozzles in an aero engine,a non-contact measuring system for swirl slots is established in the paper.Based on the combination of conoscopic holography detecting,multi-axis linkage positioning and special fixturing technologies,the measuring system could be utilized to scan and inspect the geometric parameters such as depth,width and swirl angle of every swirl slot.Firstly,the measuring and calculating principles of those parameters are analyzed to derive the mathematical expressions of them.And then,the mechanical structure,optical sensor,motion controlling system and special fixture for fuel nozzles etc of the measuring system are introduced and described in detail.Finally,the swirl slots of a fuel nozzle are measured several times on the measuring system set up in the paper.As the experimental results show,the system could accomplish the appointed measuring task and the repeatability accuracy of it could meet the inspecting requirements.Therefore,the precision measuring system for swirl slots of fuel nozzles could serve as a technical solution for the measurement of the shapes and dimensions of fuel nozzles.

关 键 词：燃油喷嘴 旋流槽 非接触式测量 锥光偏振全息 

分 类 号：TH74[机械工程—光学工程]