Measuring system of thread parameters based on machine vision
-
摘要: 为了高精度测量螺纹的各项参量，建立了基于机器视觉技术的螺纹参量测量系统。采用螺纹工件旋转、相机跟随拍摄的方式采集螺纹在平行背光下的轮廓数据，实现了螺纹的各项参量测量，扩大了系统的测量范围，并且降低了相机标定误差的影响。推导了坐标系统转换方程，通过标定实现了坐标统一，并推导了螺纹参量计算公式；针对CCD相机光轴和螺纹轴线垂直时螺旋线对螺纹牙投影产生遮挡失真情况建立了数学补偿模型。结果表明，得到的测量不确定度小于2m，重复性优于4m。该系统可以完成螺纹的各项参量测量。Abstract: In order to measure the parameters for screw thread with high-precision, a measuring system of thread parameters based on machine vision technology was established. Contour datas of thread in the parallel back light was obtained by thread workpiece rotation and camera following-shot, and the measurements of thread parameters were realized. The measurement range of the system was expanded and the effect of camera calibration errors was reduced. Coordinate conversion equation was derived, and the coordinate system was unified by system calibration. Calculation formulas of thread parameters were derived. Considering the distortion of thread teeth on the projection of screw line when the optical axis of CCD camera and thread axis were vertical, a mathematical compensation model was built. The experiment results show that the uncertainty of system measurement was less than 2m and repeatability was better than 4m. The system can measure the thread parameters.
-
Keywords:
- measurement and metrology /
- thread parameters /
- machine vision /
- contour /
- ditortion /
- error compensation
-
-
[1] LEI J P,YAN Sh H,SHEN Sh W.Research on measuring system of thread parameters by CCD vision[J].Manufacturing TechnologyMachine Tools,2010,32(4):96-99(in Chinese).
[2] ZHANG H Y,ZHANG G X.Online test system of large screw thread[J].Chinese Journal of Mechanical Engineering,2008,44(12):199-202(in Chinese).
[3] SHEN Sh W,YAN Sh H,ZHOU Ch L,et al.Research of automatic detection technology of thread paraments based on CCD vision[J].Semiconductor Optoelectronics,2007,28(6):865-869(in Chin-ese).
[4] YANG L J.Research on image processing method in taper thread-online measuring system[D].Xi'an:Xi'an Electronic and Engineering University,2006:1-2(in Chinese).
[5] WANG W Q,SHAO D X,JIANG J F,et al.Reasearch on optical microscope measuring method of external thread parameters based charge-couple device[J].Applied MechanicsMaterials,2012,163(39):39-43(in English).
[6] WU D X.Research on measurement and evaluation system of the screw thread via machine vision technology[D].Nanjing:Nanjing University of Aeronautics and Astronautics,2010:4(in Chinese).
[7] ZHU G,ZHU X F.Reading system for thread features based on image recognition[J].ComputerDigital Engineering,2010,38(11):156-159(in Chinese)..
[8] CHEN M L.Vertical projection measuring method for male thread and its application analysis[J].Laser Technology,2012,36(6):793-797(in Chinese).
[9] CHEN M L.Error analysis of thread measurement with machine vision[J].Laser Technology,2014,38(1):109-113(in Chinese).
[10] JOSHUA M,YU L J.Application of digital image analysis method in metric screw thread metrology[J].Journal of Shanghai University (English Edition),2004,8(2):208-212.
[11] HE F J,ZHANG R J,LAN Sh,et al.Measurements of non-contact external tapered thread based on bear array CCD[J].Journal of Harbin Institute of Technology,2008,40(7):1169-1172(in Chinese).
[12] SHEN M H,SHEN Sh F,WANG X Ch,et al.Distortion calibration of parallel screw thread form based on non-contact measurement[J].Chinese Journal of Agricultural Machinery,2011,42(10):224-229(in Chinese).
[13] SONG L M,QIN M C,YANG Y G,et al.Gear machining error detection based on laser vision method[J].Opto-Electronic Engineering,2015,42(1):1-5(in Chinese).
[14] CANNY J.A computational approach to edge detection[J].IEEE Transaction on Pattern Analysis and Machine Intelligence,1986,8(6):679-698.
[15] YU M Zh.Research on image magnification algorithm based on sub-pixel edge detection[D].Harbin:Harbin Engineering University,2013:29-31(in Chinese).
[16] ZHANG Z.A flexible new technique for camera calibration[J].IEEE Transaction on Pattern Analysis and Machine Intelligence,2000,22(11):1330-1334.
-
期刊类型引用(13)
1. 马博华，杨尹. 基于激光传感器的室内舒适度智能控制系统设计. 激光杂志. 2021(12): 197-201 . 
百度学术
2. 马佳博，王成玥，陈峰. 加激光选区熔化成形技术的产品设计三维模型研究. 激光杂志. 2020(05): 134-138 . 百度学术
3. 宋姗姗，刘韦. 基于激光技术的无线传感系统容错目标定位设计. 激光杂志. 2020(06): 36-39 . 百度学术
4. 潘森，高婧婧，许孝芳，毕勇，李金鹏. 多星敏感器地面热漂移标定位置误差检测研究. 激光技术. 2020(06): 664-667 . 本站查看
5. 许爽，周铜. 电动汽车锂电池电源故障激光传感器设计. 激光杂志. 2019(03): 168-171 . 百度学术
6. 吴耕锐，郭三学，薄鸟，刘永利. 基于激光传感器的多应急救援车辆运输路径优化识别系统设计. 激光杂志. 2019(06): 88-92 . 百度学术
7. 李亚红，冯东华. 激光传感网络恶意代码主动检测系统设计. 激光杂志. 2019(06): 212-215 . 百度学术
8. 郑新建，刘玲玲. 基于激光传感器采集信息的电气设备状态分析研究. 激光杂志. 2019(07): 179-183 . 百度学术
9. 蒋天堂，杜焰. 基于激光传感器实时数据的交通信号灯控制优化研究. 激光杂志. 2019(09): 155-158 . 百度学术
10. 李房云，赵巍. 基于激光传感器数据的机器人工作路径智能控制. 激光杂志. 2019(09): 147-150 . 百度学术
11. 彭军，陈鑫源. 基于激光位移传感器的数据高速处理系统设计. 激光杂志. 2019(12): 107-109 . 百度学术
12. 韩春光，蔡彤琛，时广华，王科峰，汪志成. 基于向量积同向技术的改进APIT定位算法. 激光技术. 2018(03): 395-399 . 本站查看
13. 杨喜良，邵磊，杨晓峥，张小虎，李柏松，高晞光. 调节型电液执行机构性能测试. 油气田地面工程. 2018(10): 90-95 . 百度学术
其他类型引用(1)
计量
- 文章访问数: 3
- HTML全文浏览量: 0
- PDF下载量: 6
- 被引次数: 14
下载: