The Finite Element Analysis And Topology Optimization For Key Structural Components Of T2120Deep Hole Drilling And Boring Machine

The deep hole processing machine occupies an important position in the field of mechanicalprocessing, how to improve the static and dynamic performance of the structure and realize thelightweight design of machine tool, has important research significance. In this paper, the finiteelement method and structural topology optimization as a key technology, modeling and analysistools as Pro/E and ANSYS software, Deep hole machining industry in our province has wideapplication background T2120deep hole boring machine as the research and application ofcarrier actions, static analysis and structural topology optimization.The main contents and innovations include：1、Using Pro/E software to establish T2120deep hole boring machine assembly model,laythe foundation for the establishment of the key pieces of structure CAE analysis finite elementmodel and topology optimization.2、In the case of T2120deep hole drilling and boring machine headstock and the bed, staticanalysis and modal analysis of the structure, the analysis revealed that the local stiffness of theheadstock structure is weak, uneven distribution, structural design unreasonable and othershortcomings3、Based on variable density method topology optimization thory,according to topologyoptimization to seek the nature of the optimal distribution of the material in a given design area,cell density as design variables, displacement as constraints, volume as objective function of thetopology optimization model, the topology optimization was carried out on the bed and bedsidebox. And then use the topology optimization module of ANSYS, extraction structure density contours and topology diagram, analysis of the optimization results.4、According to the optimization results, re-establish the headstock, bed model, And carrieson the static and dynamic analysis on the model, the calculation results show that the headstockoptimized values in the safety factor is decreased compared with before, and the mass reductionof approximately15%, the natural frequency significantly improved, especially6th order toimprove the137.91Hz. Bed optimized local stiffness and natural frequency significantlyimproved, improved structure to remove material accounted for27.5%of the total mass of thebed.Topology optimization technology into the design of the structure of the key pieces ofdeep-hole machine, get the new topology structure, realize the key pieces of structuralinnovations and lightweight design, limited to improve the performance of the structure of themachine tool, for structural design and improvement of accumulated experience in the designof the domestic deep hole drilling and boring machine, provide an effective reference.