Development of the Computer Aided Measuring System for Sheet Metal Die

• Main Authors: HO-PAO CHANG, 張鶴寶
• Other Authors: Chen-Hua She
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/81934297643356466438

碩士 === 大葉大學 === 機械工程研究所碩士班 === 93 === The mold measurement is the important process for checking the precision of the mold. Currently, the industry uses CMM（Coordinate Measuring Machine） to inspect the manufacturing errors of the dedicated product and mold. However, most of them operate CMM using manual mode that is labor intensive and time-consuming. This leads to the delay of manufacturing progress and increases the cost of production. To increase the efficiency, the automatic measuring procedures regarding the measuring path planning, CMM measurement and the measured data analysis are in great demand. The purpose of this research is to develop the local window-based software for 3D measurement to perform model inspection paths and analyze measuring data. The developed system reads the CAD model to analyze the geometry of the mold. Especially, this system adopts IGES format so that it can also read the CAD models generated by other systems and the NURBS-based surface is mainly analyzed for the geometry. After planning the measuring paths, the system can automatically create the DMIS program for further inspection and simulation. The developed system integrates the inspection data and CAD model, and shows the inspection position and error in the windows-based interface. Moreover, the statistical process data (Cp and Cpk) are used to diagnose the die quality and control the process capability so as to improve the shop floor process and provide the mold polishing guidance.