Research Of Parametric Design And Topology Optimization Of T2120Deep Hole Drilling And Boring Machine Basic Parts

With the development of the deep processing technology, deep hole machine playsa key role in the deep hole machining, deep hole machine bed is an important foundationparts, the machining precision and machine move static performance were the greaterimpacted its own quality and static and dynamic performance. More conservative designwere used original structure of the deep machine tool, resulting in some phenomena ofstructural redundancy and bulky, thus affecting the static and dynamic performance of themachine, resulting in poor precision and stability. In recent years, through a variety ofoptimization methods many scholars improved design of machine structure, but lessapplied research in the deep hole machining machine tools, especially applications ofadvanced topology optimization algorithms is rarely in deep machine tool, so thetopology optimization techniques applied in the deep Hole Drilling Machine hasimportant significance and application value.In this paper, T2120deep hole boring machine bed as the research object, which isproceed static analysis and modal analysis and topology optimization and sizeoptimization studies by taking advantage of ANSYS finite element analysis software.Parameterized finite element model of the bed is build by the use of APDL language;Static analysis and modal analysis of fixed load on the machine is made, analysisingcontours of the stress and displacement and formation graph of bed to find unevendistribution of the machine stress and displacement and a big structural redundancy; Thesize of a bed is optimized by utilize Design OPT module, baseband within the allowablerange of variation, the overall quality of the bed is reduced by7.23%; Under single ormultiple operating conditions, the bed is topology optimized by the use of topology optimization module of ANSYS to obtain the optimal distribution of the material; ESOalgorithm is developed by taking advantage of APDL language of ANSYS, based onsensitivity of stress and displacement and frequency bed is topology optimized to gainthe optimal distribution of the material; based on results of topology optimization and thebed ’s formation to create a new bed structure, the optimal structure of the bed is gainedby comparing the analysis. After bed structure is improved,2.7518%of a naturalfrequency is improved,6.591%of strength is improved,8.157%of the quality is reduced.Dynamic and static characteristics is improved and a lightweight design is achieved,which effectively improve design quality and provide a reference method and basis forstructural optimization of key components of the deep machine tool.