Study On Injection CAE Technology And Mould Design Of Locomotive-bearing Retainer

Adjusting to the railage requirement of "high-speeded, heavily-loaded, light-quantified", the engineering plastics tends to be widely used increasingly by its superiority performance. Nowadays, the design of locomotive-bearing cage is an important technology which should be solved according to the Ministry of Railways' report on the outline of the Eleventh Five-Year Plan. Thus, the study of its injection mould designed by CAE is not only representative, but also can be referenced in other related fields.Based on the characteristic of every step in injection molding and the influence of the primary process parameters on manufacture quality, we used by the injection molding numerical simulation software and technology, designed the mold alternately with theory and CAE. The paper also studied every possible deficiency in the locomotive-bearing cage process including injection molding process, the mold design, and forming process.First of all, plastic parts processing analysis: elementary determined the injection molding process and the processing parameters according to the design feature of plastic parts. Further, use it as the prime basis to design control variable in FEA analysis fore treatment process. Do the approach, such as mathematics mold building, meshing, materials selecting, injection molding machine selecting, processing fore analyzing step by step in Moldflow, a FEA software to complete the FEA analysis and numerical simulation of overflowing impression process, runner system, cooling system.Secondly, determined the optimal forming process scheme: change process parameters to form a variety of plastic forming scheme. Based on the analysis of output data gained by injection simulation, consisted of inject time, pressure and weld line, combining the manufacturing features of molding, optimum forming technology of the injection molding was obtained.In the end, from the optimum forming technology resulted by numerical simulation, design of components and parts of bearing cage injection molding were completed. The parting surface, the mold cavity, the runner system, the rake of taking off from, the mold bases, orientation positioning mechanism, ejecting mechanism and temperature-conditioning system were successfully designed. After the whole design, principle of the injection mold was illustrated.