| Parallel machine tool, also known as parallel robot machine, it is an example of successful application of parallel robotic technology in the field of machine tool manufacturing. Parallel machine tool technology from theoretical research to practical application, and less DOF parallel machine tool is a hot issue in recent years, parallel machine research. at home and abroad on the basis of fewer degrees of freedom parallel machine tool theory and applied research is still far from sufficient. this paper the introduction of the system of parallel mechanisms at home and abroad and the parallel machine tool Research, and a more detailed analysis and study of the advantages of a more typical parallel machine tool, the shortcomings. Mainly centered on the parallel machine tool structural analysis, location analysis, kinematics, statics and modal aspects of the more comprehensive and systematic analysis and motion simulation of the parallel machine tool.(1) Less DOF parallel machine tool research and development status at home and abroad, as well as key technology research and development. illustrates the significance of this research project research content and research purposes.(2) Describes the composition and characteristics of the4-RPS parallel machine tool, and calculated the degree of freedom parallel machine tool bodies for four, and equal to the number of inputs, so the parallel machine to achieve certain specified campaign. Which calculated four independent and free movement of the moving platform to move the rotation around the X-axis and Y-axis direction of the inertial coordinate system, as well as along the X-axis and Z-axis direction. The parallel mechanism of the parallel machine tool at the same time to judge the rationality of its input, the use of the matrix method to calculate the4-RPS Parallel machine Parallel Mechanism position forward solution and inverse solution. Analytical analysis of the parallel mechanism workspace.(3) The4-RPS parallel machine tool for modeling simulation and analysis. Characteristics of parallel machine tool parts, the use of large-scale three-dimensional the Pro/E design software to model the4-RPS parallel machine, and in Pro/E to achieve a complete assembly, summarizes some of the issues that should be noted that during the modeling process and the parallel machine model in the Pro/E to generate three-dimensional model to generate the appropriate file format, imported into the CAD/CAE software interface in the large-scale simulation software ADAMS kinematic simulation analysis.(4) The4-RPS parallel mechanism of the parallel machine tool ANSYS analysis. Finite element analysis software Ansys finite element model, based on the characteristics of parallel machine tools and finite element Ansys modeling three-dimensional model of the parallel mechanism made the necessary changes, but also uses its powerful command-flow modeling method, the biggest advantage of this method is just like a modified at any time. Finite element analysis software Ansys4-RPS parallel machine tool parallel mechanism flexural rigidity, static and modal analysis to determine the natural frequencies and mode shapes, and the vibration characteristics of the parallel machine tool, the analysis of4-RPS parallel machine tool vibration characteristics of the parallel mechanism. |
