Abstract:Based on SolidWorks-Workbench platform, firstly by SolidWorks, truss robot three-dimensional (3D) entity model is established, and then the Workbench is used to truss robot statics analysis of two typical working conditions. On the basis of modal analysis was carried out on the truss robot, extracting the natural frequency and vibration mode of the truss robot, which could be adjusted by the robot’s speed to distance themselves from the structure natural frequency and excitation frequency to avoid resonance.The simulation results show that the maximum deformation of the first typical working condition is 069 mm, and the maximum deformation of the second typical working condition is 026 mm, two kinds of typical working condition of the maximum deformation can satisfy the requirements of engineering technology within 1 mm, and the maximum stress value of the truss robot is 36.52 MPa, far less than the allowable stress is 220 MPa, so truss machines per capita satisfies the requirement of stiffness and strength. At the same time, the fatigue life of the most dangerous pose of the truss robot is analyzed, and the research shows that its minimum life is 15 million times, that is, the continuous working time is about 71 years, and the design service life of the truss robot is over 5 years. Through the Finite Element Analysis (FEA) analysis on working condition of two typical loading and unloading material truss robot, the rationality of the dynamic and static characteristic of the truss robot is validated, and for this kind of product structure design and optimize the design of fatigue, theory reference is provided.