Abstract:For improving single structure of engraving machine, a BC mode economical fiveaxis wood carving machine was designed. A machine tool kinematics equation was established and the problem of forward and inverse solutions of the machine tool was studied. According to the results of the forward and inverse solution, PC+NC CNC open system was used and the hardware of the CNC system was designed. Using Visual C++60 programming in Windows XP, a special thread was used for motion control regulation, the simulation of the machining code was realized.Through machining and measure to paraffin model, it is validated that the NC system accuracy is qualified.