Development of vision-guided grinding system for diamond turning tools

Abstract

With comprehensive applications in precision optical and electronic components, the demands for profiled single-crystalline diamond turning tools are increasing. Currently, most single-point diamond turning tools used for turning are still manufactured manually. The profile accuracy of the diamond cutting edge is dependent on the operator's experience and skill. Thus, it is necessary to automate the process to improve stability. In this study, a fully automated grinding system was developed to generate R-profile diamond turning tools, controlled by a vision system. The profile of the diamond turning tools is captured in real-time via a CCD camera. Deviation from the ideal profile is calculated and converted into a pulse train for feedback control. The grinding system is then able to remove the unnecessary portion of the cutting edge selectively to achieve high quality and high productivity.