Theoretical Analysis Of Three Parallel Machine Tool And Machining Process Simulation

Parallel machine tool is essentially the product of the combination of parallel robot technology and machine tool technology, Parallel kinematical machines (PKM) have many advantages, like high rigidity, strong carrying capacity, good dynamic performance, fast speed, and simple structure, etc.With the development of the computer software and hardware technology, utilizing computer technology has been an effective measure to make the machining process simulation for PKM in space.Simulation technology will increase the efficiency and save the cost, for example, parameter setting and debugging. In recent years, the developing virtual simulation technology which is able to set up a three-dimensional (3D) environment and have a real-time interactive relationship with the outside world, has been increasingly used in the field of PKM simulation.For laying a solid foundation of the three parallel machine’s control system, VRML(Virtual Reality Modeling Language) and Javascript are used to set up a virtual environment and a3D model of the three parallel machine, also to develop an interactive virtual simulation platform based on webpage(HTML), on condition that kinematic is demonstrated.The platform supplies friendly interface to make the users chose function modules conveniently, control the structural members’ motion of the three parallel machine in the3D virtual scene, realize the machining process simulation, and observe the situation and problem of motion intuitively.Based on the found of3D virtual environment, the movement of each component can be observed from every angle in this simulation system, and the operator will have a illusion of immersion easily. Through the comparision with the mechanism of grinding and the machining process, it is shown that the machining process simulation of the three parallel grinder is feasible and its effect is satisfying. Because the simulation system is easy to develop and the platform is in common use, good for expansibility, with the web permeating every field day by day, the ability of transplanting and expanding easily is a key advantage of the system.