Finite Element Analysis And Optimization Of Guide Column Based On Overall Structure Of Steel Claw Friction Welding Machine

With the development of the electrolytic aluminum industry,the mechanical equipment used to weld electrolytic aluminum anode steel claws has become the focus of research.Electrolytic aluminum steel claw friction welding machine is mainly used for welding automatic welding machine for steel claw legs and original steel claws.Its promotion and application play an important role in the production of electrolytic aluminum industry.The guide column of the vertical steel claw friction welder studied in this subject is an important connecting part in the working operation of the steel claw friction welder.Its vibration performance and lightweight design are crucial for the modal characteristics and welder stability of the whole machine.In this paper,the overall structure of the vertical steel jaw friction welder and its guide column are taken as research objects.It aims at the lightweight design of the guide column.The static analysis and modal analysis are used as research methods by ABAQUS,and the simulation simulation of the guide column is carried out and passed.Topology optimization and structural parameter optimization realize the Six Sigma design,and finally realize the lightweight design of the guide column.It mainly includes several aspects:1.Combined the whole principle of the steel claw friction welding machine,a three-dimensional model is established and the structural dimensions of the guide column is designed in detail.The working process of the welder is divided into the vertical movement of the main shaft,the friction heating and the upsetting welding.The mechanical analysis and calculation of the guide column are theoretically carried out.2.The finite element software ABAQUS is used to establish the whole machine analysis model of the steel claw friction welder.Through the static analysis and steady state analysis of the whole machine,the static analysis shows that the pre-tightening force of the bolt has a great influence on the whole machine,and the maximum stress concentration In the connection between the guide post and the top forging box,the joint should be optimized;the modal analysis shows that the whole machine should avoid the rotation of the whole machine around the Z axis,and the risk of resonance in the sixth mode is increased.To avoid the resonance frequency of36.7Hz,the speed should be adjusted during the friction heating phase.It isdetermined that the variable speed feedstock method is used to reduce the error according to the simulation results of the mathematical model.The PI-type iterative self-learning algorithm is used to eliminate the error and accumulated error,which improves the efficiency and accuracy of the batching system.3.Based on the finite element analysis of the whole machine,the simulation analysis and optimization design of the guide column.Static analysis of the guide column without three stages of preloading and welder operation.The research shows that when there is no preload,the guide column is less pressed overall,the strength is satisfied,and there is a large space for structural optimization.When the preload is applied,the guide post is pressed when the main shaft moves down and the guide post is pulled during friction heating.The stress at the joint with the top forging box is the greatest;when the forging is welded,the guide post is pulled,and the maximum stress appears at the joint of the base below the main shaft.Free modal analysis of the guide column indicates that there is no resonance during operation.Accomplishing the logic control design of the lower computer program according to the process flow.The C#language is used to write the upper monitoring software program,which introduces the key technologies used by the software briefly and designs the functions of the software and the required database.The communication structure between PLCs and between the host computer and the PLC is designed.Each device can be directly connected,and the communication is stable and reliable through the Siemens-specific communication protocol.4.Finally,the lightweight optimization of the guide column is carried out.From the aspects of topology optimization and parameterized structure optimization,the six-sigma design is used to analyze the stress and strain of the guide column and its response relationship.Lastly,the quality of the guide column is 16.76%.The guide column is 1273.8Kg.The optimized performance of the guide column is analyzed and compared.The research shows that the optimization result of the guide column is correct,the optimization method is reasonable,the quality of the guide column is reduced after optimization so that the natural frequency is improved and the strength of the guide column is improved.