传统的接触式测量满足不了批量生产的快速响应,典型的结构光法和基于近景摄影测量的非接触测量方法,在三坐标测量与三坐标解算过程中人工参与多,且应用限制条件多。利用1D激光位移传感器、伺服坐标控制器和运动减震补偿设备,研制了一种三坐标非接触外形尺寸测量系统,能够实现快速三维成像,自动获取工件表面密集三维点云。激光位移传感器安装在z轴上,并与xoy平面垂直。通过严格的系统检校和滤波,控制与补偿测量误差,快速自动全面检测工件质量。实验结果表明,系统单点测量精度优于10 μm,平均测量精度优于20 μm,可满足工件检测的使用要求。

Machining mass products need a rapid measuring system,but the traditional contact measuring methods do not meet the demands of mass production. Meanwhile,some non-contact measuring methods,for example,structured light methods and photogrammetry-based systems,they usually require intense manual intervention during operating. A 3D coordinate laser non-contact measuring system using 1D laser sensor and a servo control coordinate system was proposed to fast collect dense 3D points of the objects. The laser sensor is installed on the z-axis perpendicular to the xoy scanning platform. The errors are removed by designing filters and calibrating the entire system. The measuring results show that the measuring errors of single point are less than 10 μm and the measuring errors of the whole surface are less than 20 μm.