摘要: |
为了积极探索叶型孔特征的高精高效测量技术解决方案和思路,基于投影测量原理,设计并搭建了一套非接触式的叶型孔视觉测量系统。该系统具有三个直线轴和一个回转轴,采用背向照明方式,由三坐标运动平台搭载工业相机以实现其测量轨迹,并在高精度气浮转台的配合下使周向分布的每个叶型孔逐一进入测量区域。在测量过程中,通过工业相机采集被测叶型孔的二维投影图像,经由图像处理和叶型参数分析获得被测叶型孔的几何尺寸和轮廓度等型面参数。为了验证该系统的功能实现,选取某个静子安装环作为被测零件,应用该系统对其上分布的某个叶型孔特征进行了测量,获取到了相应的型面轮廓数据,验证了系统的可行性和有效性。 |
关键词: 叶型孔;非接触;视觉测量;气浮转台 |
基金项目:基础性军工科研院所稳定支持项目(K020VA01) |
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Establishment and Realization of the Vision Measuring System for Blade-shaped Holes |
Bi Chao1, Sheng Bo Zheng Qi Zheng Xuezhu2, Hao Xue Zhou Peng1
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1. Aviation Key Laboratory of Science and Technology on Precision Manufacturing Technology;2. AECC South Industry Company Limited
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Abstract: |
For the purpose of actively exploring and developing the technological solutions and ideas for rapid and accurate inspection of blade-shaped holes, a non-contact vision measuring system based on the principle of projection measurement was designed and established. Adopting the back lighting mode, the system was provided with three linear motion axes and one rotary motion axis. Furthermore, the industrial camera was installed on the 3D motion platform to realize its measuring path and every blade-shaped hole distributed in the circumference direction enters the measuring region in turn with the cooperation of the aerostatic rotary table of high precision. In the measuring procedure, the 2D projection image of the blade-shaped hole was captured by the industrial camera to calculate its geometrical dimensions and profile errors etc by subsequent image processing and profile parameters analysis. To test the function realization of the system, a stator mounting ring was selected as the target and the blade-shaped hole distributed on it was measured by the system to derive its profile data, in which the feasibility and effectiveness of the system were verified. |
Key words: blade-shaped hole;non-contact;vision measurement;aerostatic rotary table |