Research On The System Of 5-Axis CNC Wire Bending Machine Based On PMAC

In the metal manufacturing industry, the traditional wire forming is operated manually with special die. This mode of production is labor-intensive, inefficient and inaccurate. In addition, frequency of varying the molds for different types of workpieces makes this method become graduatelly difficult to meet the requirement of the real-time manufacturing. In this paper, the research is to adapt variety of high-precision processing, taking advantage of CNC technology and alterable molds to make the wire forming efficient and high-quality. The following three aspects are contained in this paper.Firstly, on the mechanical part, the whole mechanical structure is designed according the features of the wire and the forcing point on the wire is anylised. Based on it, the number of total axis and the coupling axis is accertained. Moreover, according to the analysis of the forces, the model of the servo motors and the reducers are accertained.Secondly, on the software of the control system, on one hand, the motion programs and the PLC programs are written to the subordinate computer PMAC, on the other hand, the human-computer interaction program, including the modules of parameter settings, parameters display, numerical control command format, document read and error compensation are developed in the supervisory computer.Thirdly, high-performance servo controller PMAC is used as the main controller, combined with industrial computer and servo motor which works under the torque control mode, to build a control platform hardware.The significance of the subject and innovation lie in its complete difference from a traditional wire processing method, which greatly enhances the efficiency of wire processing and accuracy. The application software developed in this paper are user-friendly with complete functions, greatly improving the efficiency of wire bending process, shortening the product time to market and increasing manufacturing flexibility.