Finite Element Analysis And Optimization Design Of Integral Lathe Bed Of CK30L CNC Lathe

Nowadays,CNC machine tools play a crucial role in the production and processing of components.Because of the rapid development of the production process,the factory has put forward higher requirements for the processing precision of parts and parts,and the demand for the comprehensive performance of the machine is steadily increasing.However,there are some limitations in the traditional design plan,which makes the lathe develop towards the direction of high-speed,complex and high-precision.Therefore,it is necessary to use modern design method to design the overall structure of lathe.In this paper,the integral lathe bed of CK30 L lathe is taken as the key part to analyze and research,so as to reduce the weight of the integral bed as the optimization goal.Under the condition that the static and dynamic characteristics of the bed are satisfied,the static analysis,modal analysis and optimization design of the CK30 L integral body are carried out by using the method of multi-objective driving optimization.First,the whole structure performance of the CNC lathe is realized according to the needs,and the design of the whole size of the lathe structure,the details of each part and the other parts are completed by the experience gained by the lathe developer.The three-dimensional software UG is used to model the split body and other parts of the CNC lathe,and the physical model is properly simplified under the requirements of the bed body and the mechanical properties of the lathe.The static analysis and modal analysis of the model are carried out with the ANSYS Workbench software,and the analysis results are observed.In order to improve the overall characteristics and machining precision of the CNC lathe,the structure of the split body bed is improved.Through the integral casting,the body and the bed of the bed are cast as a whole.There is no binding surface in the middle,which greatly reduces the occurrence of the uncertain factors.Then the three-dimensional UG body is modeled and the model is simplified.The static analysis,modal analysis and harmonic response analysis of the solid model are carried out by the finite element analysis method,and the analysis results are observed.The sensitivity analysis of the CK30 L integral bed is made.The six dimensions of the lathe bed are initially designed variables,and the output parameters are stress,weight and strain.According to the results of sensitivity analysis,a reasonable design point is selected to optimize the design,to optimize the multi target of the bed,and to compare the static performance and modal performance of the integral body before and after the optimization,and it can be verified that the optimization design scheme is in line with the requirements.The CK30 L integral bed is modified by multi-objective drive optimization.Finally,three groups of optional optimization points are obtained,and the static analysis and modal analysis are carried out after the three sets of data round optimization are optimized.Compared with the finite element analysis results of the CK30 L integral bed before and after optimization,the weight of the bed is reduced and the original design goal has been completed under the condition that the bed body performance is satisfied.The idle running test,trial cutting test and accuracy test of the prototype developed and produced are carried out.The lathe is running smoothly and smoothly,and the workpiece is cut out without cutting,and the accuracy is up to the design requirements.The above tests prove that the design of CK30 L high speed and high precision CNC lathe is reasonable and feasible.