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Proceedings of CAD'15, 2015, 133-136
NC Simulation for Adaptive Look-Ahead Interpolator with On-line Collision Detection
Abstract. CNC machining has become the standard of producing precise components for manufacturing industries. As products become more complex in geometry, CNC machining also evolves from 3-axis/ 5-axis machining to more complex multi-axis turn-mill machining. In addition, to achieve flexible manufacturing and increase automation level, multi-function CNC machining center further integrates machining, grinding, polishing, and even laser sintering (additive manufacturing) into one single CNC machine platform. However, as the complexity and cost of the machine increase, the issue of on-line collision detection and avoidance becomes more and more important. This issue is particularly critical for high-speed multi-axis machining. With the advancement of the CNC and machine tool technology, multi-axis machining has become the main processing method for producing everyday products. Compared with three-axis machining, multi-axis machining has high precision, efficiency, and better surface quality in short machining period. It is used for machining complex and contour free-form product. But since the tool path is complex, interference or collision is easy to occur and can damage the machine or part. Traditionally, off-line simulation is used to detect collision before machining. But it becomes out-of-date because the demand for real-time simulation of the CNC machining process is increasing for the purpose of saving time and money.
Keywords. Multi-axis NC simulation, Look-ahead function, Adaptive path interpolation, Collision detection