| 引用本文: | 梁杰,张康宁,邱益.基于线激光位移传感器的孔毛刺测量与评价[J].哈尔滨工业大学学报,2022,54(1):156.DOI:10.11918/202108114 |
| LIANG Jie,ZHANG Kangning,QIU Yi.Measurement and evaluation of hole burr based on 2D laser displacement sensor[J].Journal of Harbin Institute of Technology,2022,54(1):156.DOI:10.11918/202108114 |
|
| 摘要: |
| 针对现有仪器不能实现对孔全域的毛刺高度、根厚度及形貌的综合快速测量和无法自动利用测量数据实现毛刺期望评价指标的计算,设计了一套基于线激光位移传感器的孔毛刺测量系统。首先阐述多重反射引起的杂散光及激光成像面和待测孔表面的倾斜对测量精度的影响,并提出了消除杂散光和校准倾斜的方法；接着利用传感器的测量数据开发了一种计算毛刺高度和根厚度的算法,实现了毛刺高度和根厚度沿孔圆周展开的可视化；最后提出以最小二乘中线、算术平均波动和均方根波动为评价指标的描述孔全域毛刺高度和根厚度的量化评价方法。实验结果表明:该系统不仅可以可视化孔全域的毛刺3D形貌和2D波动,还可给出毛刺及其评价指标的量化值,其测量重复度<0.8 μm,毛刺高度测量精度为5 μm,满足孔毛刺的精确测量需求。 |
| 关键词: 孔毛刺 测量 线激光 毛刺评价 |
| DOI：10.11918/202108114 |
| 分类号:TB92 TH711 |
| 文献标识码:A |
| 基金项目: |
|
| Measurement and evaluation of hole burr based on 2D laser displacement sensor |
|
LIANG Jie,ZHANG Kangning,QIU Yi
|
|
(School of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou 450001, China)
|
| Abstract: |
| Aiming at the inability of existing instruments to comprehensively and rapidly measure the burr height, root thickness and morphology across entire regions of holes and the incapability to automatically use measurement data to calculate the evaluation indicators of burrs, a hole burr measurement system based on 2D laser displacement sensor was developed. First, the effects of stray light caused by multiple reflection, the tilting of laser imagining plane and the hole surface to be measured on measurement accuracy were discussed, followed by the proposition of a method to eliminate stray light and tilt correction. Next, the data of sensor measurements was utilized to develop an algorithm to calculate burr height and root thickness, fulfilling the visualization of burr height and root thickness extending around the hole circumference. Finally, evaluation indicators of median least square, arithmetic mean waviness and mean square root of waviness were used to describe the quantitative evaluation method of burr height and root thickness across the whole hole region. The experimental results show that the system can not only visualize the 3D morphology and 2D fluctuation of burrs across the whole hole region, but also give the quantitative values of burrs and their evaluation indicators. The repeatability precision of the system is less than 0.8 μm and the burr height accurate rate is 5 μm, which meets the requirements of accurate measurement of hole burr. |
| Key words: hole burr measuring 2D laser displacement sensor burr evaluation |
