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The pole piece is one of the important parts of the motor, it is the main magnetic pole core enlarged portion near the one end of the rotor, the effect is to make the gap reluctance is reduced, improving the magnetic field distribution of the main magnetic pole and excitation group is easily fixed. The pole pieces composed by three circular surface, complex shape, high surface quality and dimensional accuracy requirements. Machining, powder metallurgy, forging traditional forming methods, these methods there are defects and poor material utilization is low, the quality of the part, it is necessary to explore new processes for forming the parts. Part rolling process is a method of molding machine parts production rolling process, as special rolling technology, it has a small work load, high production efficiency, product and high precision, suitable for the production of large quantities of machinery parts. In this paper, the pole shoe preforms as the research object, its forming process analysis proposed pole shoe preformed rolling process. In the pole shoe preformed rolling process research process, through the analysis of the characteristics of pole shoe parts, developed the two rolling technology program, designed the first pass and second pass rolling mold. By theoretical calculation, the size of the original blank. Pole shoe preformed pass rolling with the second pass rolling process simulation using bulk forming finite element analysis software DEFORM-3D. Simulation, get two blank metal rolling process flow law, the stress and strain fields and rolling force, blank size and simulation parameters such as the amount of time under pressure formability. The results show that the blank specifications for Φ18-100mm, and the speed is 36r/min first pass under pressure an amount of 6 mm, the coefficient of friction of 0.5 forming effect optimal. Simulation analysis, Anterior discussion and improvement program. This paper Z28-80 type thread rolling machine rolling experiment, given that the equipment can not meet the experimental needs, so the transformation Z28-80 type thread rolling machine, making it the pole shoe preformed rolling equipment. The core of the transformation is to design a transmission mechanism to the agency by the bracket, gear pair, shaft, bearings, bearing caps and other components. By the agency, counter-rotating output shaft rolling machine, the pole shoe preformed rolling. Theoretical Mechanics of Axis strength check, the stent static analysis using finite element analysis software ANSYS, force and deformation distribution, to verify the reliability of its structure. The rolling experiments preformed pole shoe, finite element numerical simulation is validated through physical experiments and numerical simulation contrast transformation was complete rolling equipment reliability. Theoretical studies and experimental results show that the use of the rolling process can be shaped pole shoe parts.
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