Integration of Machining and Measuring Processes Using On-Machine Measurement Technology

초록

This paper presents an integration methodology for machining and measuring processes using OMM (On-Machine Measurement) technology based on CAD/CAM/CAI integration concept. OMM uses a CNC machining center as a measuring station by changing the tools into measuring probes such as touch-type, laser and vision. Although the measurement accuracy is not good compared to that of the CMM (Coordinate Measuring Machine), there are distinctive advantages using OMM in real situation. In this paper, two topics are handled to show the effectiveness of the machining and measuring process integration: (1) inspection planning strategy for sculptured surface machining and (2) tool path compensation for profile milling process. For the first topic, effective measuring point locations are determined to obtain optimum results for given sampling numbers based on the CAD/CAM/CAI integration concept. In order to validate the approaches proposed in this paper, a concrete case of the machining process is taken into account and about 90% of machining error reduction is successfully accomplished through the proposed approaches.