| Summary: | 碩士 === 國立中正大學 === 機械工程學系暨研究所 === 102 === The main purpose of this research is the development of real-time five-axis CNC machine tools collision detection technology. Nowadays, emphasis on precision and productivity, five-axis CNC machine tools has been the mainstream processing technology trends. Due to the automated's sake, if there is an error in the instructions or operations in the course of processing, the machine is prone to collision or interference, will travel products and manufacturing delays endanger the safety of operating personnel.
In this research, the machine model is described by the way of Constructive Solid Geometry, which builds each component of five-axis CNC machine tools. Its main purpose is to improve the use of the machine to establish the structure of STL model, resulting in the problem of excessive data and the G-Code machine is moved through the back of the object do not need to determine the collision influence the efficiency of the collision detection,also improve the composition caused by the STL cylinder, the sphere, and so does not have a surface accuracy of graphic objects. To demand on industry practice, the program adds to predict the value of machine, and then through the analysis tool machining G-Code movement direction. Finally, through an entity separation axis theorem testing as a basis for collision detection and then show the simulation results with OpenGL.
Finally, under the five-axis machine tools to get use to detect the collision plane crash specified average time 10.59 μs, compared to 53.8% did not improve with the specified impact surface, and in the mean time collision detection is much smaller than the sampling time of 0.5~1ms , immediate practical machine real-time collision detection.
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