Finite element analysis and optimal design of robotic arm

Abstract

With the rapid development of modern industry and Robotics, industrial robots are widely used in manufacturing. However, because of the high price of industrial robot systems on the market, industrial robots are limited to the production of small and medium-sized enterprises. Against this background, this paper fully investigates the development process and research status of industrial manipulators at home and abroad, and designs a six-degree-of-freedom economic industrial manipulator. ANSYS Workbench software is used to analyze the statics of the arm and the whole machine, and the equivalent stress cloud map and the displacement and deformation cloud chart are obtained. The static strength and stiffness of the large arm and the whole machine are analyzed, and the reliability of the structure is verified. Then adopting the optimization module in the software, the multi-objective optimization design of the large arm is carried out. The size of the structure is reduced and the quality is reduced by 14.7% in the case that the large arm meets the requirements of the allowable stress and the maximum displacement. The target of the optimization design is realized.