The CNC System And Tool Path Planning Of Parallel Machine Tool

The emergence of parallel machine tool is considered as the most revolutionary breach of designing machine tool in this century. Compared with traditional machine tool, parallel machine tool has such priories as high response velocity ,high accessional technology value , and high adaptability to circumstance. Despite of its simple structure, the control of it is complicated. Compared with traditional CNC systems, the CNC system of parallel machine tool is immature. And for different types of parallel machine tool, there are many differences. So in order to develop the products of parallel machines tool, we must solve the control problem of it at first.Some work on constructing the NC system of parallel machine tool is presented in this dissertation.1. Foundation of the mathematical model of controlFirst, we have set up the mathematical model of the parallel machine tool which has five degrees of freedom. Furthermore, the model has been applied into developing the software of the NC system.2. Program the software of control systemThe chief part of the software has been finished. In the developing process, we have looked upon on the compatibility with the traditional NC system, made use of modularization method to program the functions of the software. Therefore the opening ability of it is embodied.3. Foundation of the experiment platformMeanwhile, we built up the experiment platform of the NC system of parallel machine tool. The PC and standard control card is used, which has greatly simplified the structure of the control system and has good reliability and opening ability. The software has been applied into the practical control experiment, and we got a expected result .4. Research on the tool path planning of parallel machine toolA method of fixture-free manufacturing, adaptive to parallel machine tool, has been briefly introduced. And we also did some research on the tool path planning of processing multiple surface with parallel machine tool.The work provides support for the CNC system and tool path planning of parallel machine tool.