Investigation on Three Dimensional Image Measurement for Geometrical Parameters of the Cutter

In this investigation, image measurement technology is applied for development of an image measurement system for geometrical parameters of the cutter. CCD, LED light source, servo motor and x-y bi-axial stage have been integrated in this system. It can be utilized for measuring geometrical parameters of the milling cutter and drill. The measured parameters include diameter, helix angle, arc radius and point angle. To analyze repeatability and reproducibility of the system, long form is introduced. Measurement results by the system have been compared with that by ZOLLER. The analysis results show that dimensional precision of 19 mum and the angle precision of 0.4deg can be achieved by this measurement system. There are 40 mum differences in dimensional measurement, and 0.8deg differences in angle measurement between the results of the system and ZOLLER. The advantages of this measurement system are compact, lower cost and easier operation. And with the above measurement characteristics, this system can be available for cutter manufacture and inspection.