Lightweight Study Of The Large Honing Head

As a grinding tool on the honing machine,the structure and performance of large honing head have a direct impact on the honing accuracy and honing efficiency because of its complex structure,large mass and worse working conditions.The inertia force caused by large mass has a great influence on its accuracy and kinematic stability.Based on the analysis of structure,working conditions and loading features,lightweight research of structure and material for the large Φ450mm double-feed honing head was carried out.The main research contents of this thesis compose four parts as follows:1.Force analysis for six stages in the honing process was carried out to obtain the calculation formulas of different stages and torque.Than the honing process parameters were determined to calculate them.2.The three dimensional model and the finite element model of the honing head were established to analyze the weight ratio of different components.The static characters and modals were analyzed to obtain maximum stress and deformation under the six working conditions.Based on the analysis results and weight ratio of different components,the grinding head and big cone were determined to be optimization objects, then the optimization scheme was proposed.3.The site and shape of grinding head and big cone which need to optimize were derived using shape optimization,then the final size and model of honing head and big cone were obtained after the size parameter driven optimization.The optimized model of honing head was built by reducing the mass of grinding head with replacing 40 Cr with lightweight materials.4.The performance of the optimized honing head was tested and verified by the analysis of the static characters and free modal.Compared with the performance before optimization, the analysis results indicate that the maximum deformation and maximum stress are reduced in a small range without affecting the stiffness and precise of honing head, but the mass has reduced by 3.68%,so that the feasibility of lightweight research on large honing head is verified preliminary.