| 一种圆管类工件直线度激光测量系统 |
| A Laser Based Straightness Measurement System for Tube Type Works |
| |
| HTML 查看全文 查看/发表评论 下载PDF阅读器 |
| 中文摘要: |
| 设计了一种圆管类工件直线度激光测量系统。提出了一整套关于圆管类工件定心、内径获取和直线度计算的方法。研制了高精度的自动定心机构，采用双锥体同轴定心法实现测量系统在圆管类工件内的高精度自动定心，通过位置敏感探测器(PSD)和准直激光获得圆管各截面中心坐标，结合旋转扫描机构获得圆管内径测量值，并采用最小二乘椭圆拟合算法进行定心误差修正，最后运用上位机进行数据处理，计算出工件直线度。实验结果表明，该系统定心准确度可达20μm，内径测量准确度可达5μm ，测量重复性稳定在7μm ，直线度测量准确度在40μm以内。 |
| 英文摘要: |
| A laser based straightness measurement system for tube type works is designed in this paper. The technologies about centering, diameter acquiring and straightness computing are also developed. The self-centering sub-system uses a double cone coaxial centering method to achieve high-precision centering. Center coordinates are obtained by PSD and collimated laser. A rotation scanning sub-system is used to obtain radius and angle measurements which are used to rectify the centering error by applying least squares circle fitting algorithm. The straightness of the tube type work to be measured is finally calculated by using the above data obtained. Experimental results show that the system centering accuracy is up to 20μm, radial measurement accuracy up to 5μm, measurement repeatability up to 7μm, and straightness measurement accuracy less than 40μm. |
|
| 中文关键词: 圆管类工件；直线度；自动定心 位置敏感探测器(PSD)；激光测量 |
| 英文关键词:tube type works straightness self-centering position sensitive detector (PSD) laser-based measurement |
| 基金项目: |
| DOI：10.11823/j.issn.1674-5795.2015.04.06 |
| 引用本文：杨凯,李振华,徐胜男,王明昱.一种圆管类工件直线度激光测量系统[J].计测技术,2015,35(4):. |
| 关闭 |
