The Design of Geometrical Parameters Measurement System
WANG Hong-tao1,HE Xiao-bo2,CHEN Qi3
1. College of Mechanical & Electrical Engineering, Nanjing University of Aeronautics and Astronautics,Nanjing, Jiangsu 210016, China
2. China Aviation Powerplant Research Institute,Aviation Industry Corporation of China, Zhuzhou, Hunan 412000, China
3. Jiangsu Province Institute of Metrology, Nanjing, Jiangsu 210007, China
Abstract：A novel system for measuring geometrical parameters of the measured object is designed by using machine vision and numerical control technology. In the system, the step motor is used to drive the two dimensional measuring table, the CCD camera and two grating rulers is used to acquire the outline coordinate data of the measured object, and a automatic contour tracking algorithm is executed in order to collect the complete data. The program for measuring and evaluating the straightness, roundness, parallelism and verticality is developed, as a result, the measurement of the geometrical parameters of the measured object is accomplished. The experiment results show that the designed system has high automation level, and its measuring accuracy reaches the micron degree.
2011, Vol. 32 
