NC PATH SIMULATION AND COLLISION DETECTION BASED ON THE FIVE-AXIS CNC GEAR PROFILE GRINDING MACHINE

• Main Authors: Chin-yu Chang, 張欽宇
• Other Authors: Yi-pei Shih
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/wmw734

碩士 === 國立臺灣科技大學 === 機械工程系 === 99 === In order to improve the precision of the cylindrical gear with large-size diameter, the cylindrical gear is grinding by profile grinding wheel. There are three processes of existing simultaneous five-axis CNC gear profile grinding machine, which including dressing, grinding, and on-machine measurement. The motion of this machine is more complicated, and its precision and price are high. Once the collision of machine happens, the workpiece is declared no longer useable and the clamping fixture is damaged. Critically, the charge of the repair for the damage of machine is expensive. In order to avoid the collision of machine, dry run is implemented to test whether the NC path is correct or not before actual manufacturing. Because of the complicated process, it needs to take long time for testing. At this time, the machine is idle and the production efficiency is reduced. Having this in mind, we develop the 3-D virtual reality simulation system in this study to easily simulate the NC path which the user had planned. It’s not only saves the time for dry run, but also avoids the collision of machine. We use Visual basic 2008 as the developing platform in this study, and the 3-D graphical library of OpenGL as the foundation of graph showing to develop the 3-D virtual reality NC path simulation and collision detection system. The simulation system is divided into three parts: (1) the complier of NC code, (2) the building of 3-D volume pixel, and (3) the detection of collision.