Research On NC Systemand Its Post-Processing Of A 5-DOF Series-Parallelmachine Tool

Parallel machine has been widely concerned in the academic community.Because it hastechnology advantages of the high theoretical stiffness, the strong bearing capacity, lightweight, high response speed, symmetrical structure which is easy to compensate, a high degreeof modularity, good restructuring performance and a higher-value-added . PMT expands theapplication scope of machine tools and provides a theoretical basis for a new type of machinetool design . In this paper, the five degrees of freedom in the string of PMT is a kind of the newgeneration of 5-DOF CNC machine tools which is suitable for processing complex space surfaceparts.In kinematic analysis the paper establishes the model of parallel machine tool movement,introduces the description method of posture on the moving platform. And the paper did theresearch of positive solutions and inverse solution algorithm of tandem and parallel machine,analyzing the workspace of the tandem and parallel machine.As one of the most popular CAD / CAM software ,UG has great support processing capacity,combination with CNC machine tools will enable Series-parallel processing capabilities andreasonable application .The paper develops the application perspective of the series-parallelmachine and studies the post-processing system problem of the series-parallel machine based onthe UG.. The study includes UG post processor of function and structure in the Series PMT PostProcessing System, and proposes overall structure of PMT Post Processing System.Using UGPost-Builder for post-processing structure tool we can develop the structure of the series PMTPost Processing System, then using TCL / TK language we can develop the PMT PostProcessing System based on UG, the system can directly read tool path data generated by UG/ NX.After calculating post-processing we can get the NC program which can drive the parallelmachine .The paper make the high-performance motion controller produced by the Delta Tau companyof the USA as the control main, based on the IPC PMAC NC system and the overall hardwarearchitecture.Using the Visual C + + to develop the function of the sofeware of theseries-parallel machine ,and completed the delineation of functional modules and main moduleswhich were functional development.Finally, according to the needs of systems, applicationsoftware based on Pmac PEWIN PID in the regulatory function of the parameters of the wholesystem has been optimized.The application software developed by the system was debuggingran.