Abstract
This paper deals with a high accuracy NC cutting simulator, which is able to represent the effect of a tool deformation, motion error and so on, based on Boundary-Map geometric model. Although a CNC controller executes interpolation, smoothing and servo control of tool path, these functions may cause a motion error. To emulate these functions of CNC controller, a crowd of points for tool path is generated based on a NC program. At the each crowd of positions the removing process from work-piece can be simulated by applying set-operation to the Boundary-Map data. The shape simulated by this NC simulator is compared with the machined shape using the same NC program. As a result, it becomes clear that the developed NC simulator can emulate enough the motion error caused by NC controller and enables to simulate accurately the effect of the error upon the machined geometric shape.
