CNC double spiral tool-path generation based on parametric surface mapping

摘要: High-speed machining (HSM) has been an important method for complex parametric surface. Tool-path planning HSM a significant impact on processing efficiency and surface quality. A new double spiral tool-path generation algorithm is proposed in this paper. First, the isothermal lines which satisfy parameters mapping domain are computed by means of constructing thermal conductivity model solving partial differential equations (PEDs). Furthermore, smoothness optimization to improve avoid taking up too much memory. Then, rules constructed trajectory planned out standard order generate corresponding domain. Finally, mapped onto obtain tool-paths, tool-paths linking multi-domains. This can realize precision milling complicated without tool retractions, meanwhile it improves uniformity efficiency. Our experimented several simulations validated successfully through actual pocket. The results indicate that superior other existing methods, complicate-shaped pocket based We study 5-axis HSM.We call during PDEs smooth curves.Machining (e.g., path interval step length) be guaranteed.Mapping same ranges NURBS curve domain.Our have self-complementary structure suitably linked.