The Analysis Design And Optimization Of Superhard Cutting Tool Grinder Bed Based On Finite Element Method

The rapid development of computer technology makes finite element analysishave been widely used in mechanical design and research.Before the machinemanufacture, use computer dynamic simulation and CAE technology do analysis forworking condition of its components, and various pefrormance. With the combinationof finite element method get the analysis and optimization of the machine toolperformance eiffciently.Large parts grinder lathe bed, as the object of study in the article, which has theinlfuence on the whole grinding precision of the superhard tool grinding machine.CAE and finite element method applied for grinding machine to analyze staticstructure and dynamic characteristics and optimize internal structure of lathe bed. Inthe use of CAD sotfware Solidworks for solid modeling on bed,then import the modelinto the computer-aided ifnite element analysis sotfware Ansys Workbench foranalysis. In the process of static analysis the force analysis and load calculation wascarried out on the bed. Atfer operation, finally obtained the displacement nephogramof lathe bed structure and the stress distribution cloud. The maximal displacement andstrain were analyzed on the lathe bed under the condition of limiting process. In theprocess of modal analysis was carried out on the bed, the ifrst eight order modalvibration mode is described, analyze the cause of the large type is the most on thelathe bed and get the overall weak links during the working time. Thus providevaluable theory basis on the structural optimization of the superhard tool grinder bed.In the process of optimization of lathe bed structure, according to its owncharacteristic, through the comprehensive consideration on the static and dynamic,decide to change the original type steel plate to cross type. Then do the naturalfrequency sensitivity analysis on the structural parameters influence on the lathe bedperformance, the lathe bed wall thickness, steel plate height, the steel plate thickness.Properly reduce the three structural parameter values and in the lathe bed is the mostvulnerable points to add two reinforcement. Do the performance analysis again, and compared with the former, in the static characteristic, general lathe beddeformation and deformation in all directions has increased to reduce the rigidity ofthe lathe bed, but the dynamic performance would be better to keep. Therefore intopology optimization，emphasize on enhancing lathe bed structure stiffness.In the whole text with FME, finally get structure optimization scheme，guaranteeing the overall stiffness and structure performance and also reducing itsweight, saving construction cost.