DEVELOPMENT OF CNC BENDING MACHINE USING PARALLEL KINEMATICS MECHANISM

Abstract

Recently, aluminum pipe is needed by industrial world. Because it is high rigidity and light. There are many methods of processing pipe. But now bending method is ill-suited to high-mix low-volume production. And so we looked at the feed pressure (MOS) bending machines. But there are many problems in them. First of all, structure of processing part is complex, and object of bending is confirmed to circular pipe. We developed three dimensional pipe bending machine using PKM (parallel kinematics mechanism). In this paper, we will be able to show bending accuracy and proposal of new bending machine. KEY WORDS Parallel kinematics mechanism, Gradual curve part, Bending angle, Limit of bending, NOMENCLATURE R : Bending radius u : Offset V : Distance between dies P L : Pushing load ? : Angle of die t : twisting rate L v : Length of work of distance between dies ? b : bending angle BACKGROUND