Analysis And Optimization Of The Truss Robot Structure Based On The Finite Element Method

russ robots are also called Cartesian coordinate robots and gantry robots.In industrial application,it's the multi-purpose operation machine that can realize automatic control,repeatable programming,multi-function,multi-degree of freedom,a right angle in space at the degree of freedom of motion.It can carny objects and operate tools to complete a variety of tasks.Through the study of truss robot,this subject carried out the structural optimization of beam and column and improved the reliability of truss robot,which is of great practical significance to improve efficiency and the benefit of enterprise.The main research contents of this subject:In this paper,a company's YRL truss robot was studied,and the following research and analysis on the structure of the truss robot was done:1.This paper briefly introduces the composition and working principle of truss robots,and respectively describes the structure and function of each component.2.The 3d modeling software-Solidworks was used to build the truss robot model,and the interference check was carried out.3.We used the finite element method and the finite element software-ANSYS Workbench to analyze the static displacement of the trass robot,and concluded the deflection at the end of the beam of Z-axis under the condition of no load and full load.Under the condition of maximum deformation at the end of Z-axis,the dynamic stress analysis was carried out to obtain the integral and local robot fuselage stress diagram,to check the intensity,optimize the weak parts,and verify the rationality of material selection.4.According to the movement position of the robot,the modal analysis of the truss robot under 9 working conditions was carried out,the natural frequency and vibration mode of the robot structure were obtained,and the vibration mode which had influence on the accuracy was selected.5.By testing the static stress and displacement of the robot of existing design under typical working conditions,the law of stress distribution and beam deformation of the robot structure were analyzed.In the actual movement of the robot,the dynamic stress and deformation of the robot under the action of dynamic load were analyzed.The vibration characteristics of the structure were analyzed by testing the transient acceleration response of the robot under the emergency stop condition.The research of this subject has important guiding significance for the design of truss robot,the optimization of robot parameters and the maximization of its advantages.With the continuous increase of the human cost of domestic enterprises,truss industrial robots have obvious advantages in the manufacturing industry to achieve mass production,get rid of monotonous and repetitive manual labor,and improve product quality,and have an irreplaceable role under high temperature and toxic situations.It is also widely used in the mechanical processing industry and has practical guiding significance for promoting the application of robots in China.