Research And Implementation Of Movemont Controller Of CNC System Of Parallel Machine Tool

Parallel Machine Tool (PMT) whose principal axis is connected with machine base adopts multi-poles parallel structure, which breaks traditional concept. Thus, the rigidity of Machine Tool, the precision and quality of process are improved. Moreover, the high-speed process can be done easily. It conquers many shortcomings of the traditional machine tool, such as tool processing only along fixed path, the lower degree of freedom of tool-task and so on. CNC system of PMT is based on the open architecture, which makes the software used repeatedly and secondary development more convenient.Aimed at the characteristic that the movement in coordinate space is non- linearity map of servo axis movement in the joint space and based on the special structure of the new tri-pole-five-axes PMT designed by Northeast University, a kind of design that is fit for the movement-characteristic of PMT is brought by analyzed the architecture of motion controller of the traditional CNC system. The whole frame of the motion controller is introduced in paper based on the pure-software controlling system of PC platform, and that is carried out on RTLinux platform.The paper completes the function design and software module design of motion controller for CNC system of PMT by the research on theory of motion controller. Motion track layout according with the request of movement for PMT is implemented on the algorithm of motion track layout. Moreover,the existing problem on motion control of PMT is resolved in the paper.