Vibration characteristic analysis of spot-welding robot based on ADAMS/Vibration

Luo, Haitao; Liu, Yuwang; Wang, Hongguang; Zhou, Weijia

doi:10.1109/emeit.2011.6023143

Cited by 4 publications

(1 citation statement)

References 2 publications

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“…On account of the basic theory for modal analysis, a large number of scholars have completed modal analysis with variety simulation softwares. Inputting sine sweep signal on a 6-DOF spot-welding robot end effector, the coupling vibration system of the robot is established to optimize the design of the robot by Luo et al [16] in ADAMS/Vibration with former generated modal neutral file in ANSYS. Lv and Yang [17] discussed the structural stability of 4-DOF manipulator, which is suitable for welding spot of three-dimensional space concentrated distribution and approximate single-axis distribution in car body.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Characteristics Analysis of Two-Beam Laser Welding Robot for Fulselage Panels

Zeng

Liu

et al. 2021

Preprint

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Industrial robotics is becoming increasingly popular in the field of manufacturing automation. Two-beam laser welding robot which is a proprietary industrial robot of great importance to improve the welding quality of stringer-skin T-shape structure. In the process of two-beam laser cooperative welding, the robot constantly adjusts its own posture, and the position and posture of each joint would change simultaneously, which leads to the change of the natural frequency, and other dynamic characteristics of the welding robot. Based on the finite element method (FEM), the modal analysis of the robot joints in the range of motion ability and the range of motion in the process of two beam laser welding are studied, which can provide the basis for the design and accurate control of the robot with high degree of freedom (DOF). The dynamic characteristics of the whole robot in different positions and attitudes is carried out, which includes two parts, one is importance ranking of 18 joints of the robot through orthogonal test according to the range of each joint movement. The other is obtaining a plurality of time points in one welding cycle, and performing a modal analysis of the robot at each time point on the basis of the robot joints in the range of motion during the process of two-beam laser welding, the optimal number of time nodes are attained and the test workload could be reduced. The approach described herein provides a theoretical basis for robotics design and control optimization.

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Section: Introductionmentioning

confidence: 99%