Finite Element Analysis And Optimum Design Of Rocker Arm Of Medium-sized Slag Vertical Mill On CATIA

This article reports medium-sized slag vertical mill as research object, which isdesigned by certain mechanical design and manufacture limited liability company ofChina. On the premise of which know in manufacturing engineering, production processand load-carrying condition, and checking the project for rocker component of whichcritical component, if it meets the requirements of production safety. the mechanicalmodel of rocker arm structure were separately established, and the3D model of therocker arm was carried out by CATIA with the computed load of the rocker arm. then,making static analysis and dynamic analysis of it.Through the finite element analysis, the stress and strain distribution field and tenorder modes of the rocker arm component was took out. The results show that, themaximum point of stress should be at the axis orifice of underneath rocker arm, themaximum is60.8MPa. Then, the maximum translational displacement should be at thejoint of the low rocker arm and hydraulic bars, the maximum is1.12mm. It’s show thatthe strength and stiffness of the equipment is enough for normal operation, it’s no safehidden trouble. The natural vibration frequency should be much outweigh the periodicfrequency of grinding roller and millstone. From the modal analysis result, for thiscomponent, which is in addition to outside turning on the working plane, still existvibratory magnitude and torsional capacity on perpendicular to working plane, the boltson joint position of the component must be tightened and often checked to prevent theloose fall. The original component design is much conservative, and safety coefficient is4.5. So, in order to reduce the weight of the equipment, save consumables, and make amore perfect design, we have a reduction and construction optimization design.On the basic analysis of the statics, using the dominate variable method, taking theoptimization repeatedly and finite element calculation for the component part. Finally,the reasonable optimization results to be obtained. The results show that the weight andvolume is lighter about23%. The inner stress is distributed reasonably, and assure thatthe safety factor is about3. t, the natural frequency of the improvement model is ofwhich checked by model analysis is more higher than others slightly, compared with theimprovement, the mode of vibration nearly have no change. The suggests show that thepurposes of the structure optimization is achieved.