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Open AccessArticle

Light-Weight Topological Optimization for Upper Arm of an Industrial Welding Robot

1
College of Electromechanical Engineering, Guangdong Polytechnic Normal University, Guangzhou 510635, China
2
School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China
3
School of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100081, China
*
Author to whom correspondence should be addressed.
Metals 2019, 9(9), 1020; https://doi.org/10.3390/met9091020
Received: 12 July 2019 / Revised: 5 September 2019 / Accepted: 16 September 2019 / Published: 19 September 2019
To reduce weight and improve overall performance of the industrial welding robot, light-weight design using the finite element method and structural topological optimization is presented in this paper. The work analyzed an upper arm of an industrial welding robot in the most unfavorable working condition, both under static and dynamic working situations, using ABAQUS and ADAMS software tools. Then the Tosca unit in ABAQUS was employed to accomplish the structural topological optimization, in order to reduce weight and improve the natural frequencies under the situation of low orders. The analyses results showed that the actual weight had been reduced to 17.9%, and the natural frequencies in low orders had increased. The maximum Mises stress, tensile stress, and elastic displacement of the gyration center had decreased. Lastly, an actual product was produced according to the model obtained from preceding analyses. The experiments of the repeatability tests showed that the overall performance of the optimized upper arm had been improved when compared to the original one. This research can present references and foundations for the kinetic analyses under the static and dynamic working conditions, and structural topological optimization designs for relative industrial welding robots. View Full-Text
Keywords: industrial welding robot; most unfavorable working condition; topological optimization; static kinetic analysis industrial welding robot; most unfavorable working condition; topological optimization; static kinetic analysis
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MDPI and ACS Style

Yao, P.; Zhou, K.; Lin, Y.; Tang, Y. Light-Weight Topological Optimization for Upper Arm of an Industrial Welding Robot. Metals 2019, 9, 1020.

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