光学精密工程2012，Vol.20Issue(4)：880-887,8.DOI:10.3788/OPE.20122004.0880
微型铣刀外径视觉测量的不确定度
Uncertainty in vision based diameter measurement of mini milling cutter
摘要
Abstract
A machine vision system is proposed to measure the diameter of a mini milling cutter on line, and the measurement uncertainty is analyzed in this paper. The system consists of a back-light source, a rotate stage, a rotary encoder, a camera and corresponding software. While the milling cutter rotates, the camera is triggered by the rotary encoder and a series of images are captured. The sources of uncertainty and their effects are analyzed, including the parallelism of the light source, lens distortion, CCD noise, focusing situation, the geometric properties of tested objects and the algorithm design. According to results of experiments, the uncertainty mainly depends on the geometric property of the tested object when sampling rate is not enough, otherwise, it is mainly relative to the parallelism of the light source. In the experiment performed, the system uncertainty is 4μm with a sampling rate of 33 frame/circle, both accuracy and efficiency meet the requirement of manufacturing.关键词
机器视觉/微型铣刀/外径测量/不确定度Key words
machine vision/mini milling cutter/diameter measurement/uncertainty分类
信息技术与安全科学引用本文复制引用
王磊,郭淑霞,张凤玲,冯彬,张建城..微型铣刀外径视觉测量的不确定度[J].光学精密工程,2012,20(4):880-887,8.基金项目
福建省自然科学基金资助项目(No.2011J01361) （No.2011J01361）
