Three-dimensional Modeling Of Nc Simulation System

The NC machine tool is widely used in today's manufacturing industry, and the training of NC operators is very important. So NC simulation system that is applied to the domain of NC training is worthy of researching.According to the NC lathe and the vertical machining center, the function model and general structure of the NC simulation system are introduced. The research content of this paper involves five modules, i.e. the 3D simulation module, the explanation module of NC code, the serial-port communication module, database module and the network communication module. The system's 3D simulation module which is the emphasis of the paper comprises three 3D modeling methods. Firstly, on the basis of the idea of CSG (Constructive Solid Geometry) modeling method, the hierarchical structural modeling method has been adopted to construct machine (including tool) model. Secondly, the particle system modeling method has been used to describe the physical animation simulation of irregular objects, such as cooling fluid. Finally, the discretization of triangle mesh based on the object space has been used in the dynamic simulation of machining process, which effectively solves the anamorphic animation of the model, and realizes the process simulation of turning and 3-axis milling, especially deals with the screw thread modeling and several milling tools machining.The simulation results of machining process show that the system put forward in this paper has better real-time capability, interaction and visualization of 3D graphics, and is able to verify the correctness of NC code effectively, and satisfy the requirement of NC training...