Study on the simulation system of NC horizontal milling
Based on the features of NC horizontal milling process, the 3D geometric model of virtual machine tool was established by Microsoft Visual C++6.0, MFC and OpenGL graphics library. The method of Construction of Solid Geometry (CSG) and Boundary Representation (B-Rep) were adopted, and some realistic effects treatments (including material, light, texture mapping, etc.) were applied. The established virtual machine tool can be zoomed, rotated and translated in the view area. The workpiece decomposition expression model was put forward, and Boolean subtraction was implemented in this procedure. At the same time, a tool solid model to simulate the real time process of cutting was established. Simulation example proves that this system runs reliably and avoids the inconvenience and material waste of other methods.