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Structural optimization and dynamic characteristic analysis of beam of plug-in machine
Published:2023-03-23 author:HU Yi-bo, GAO Zi-cheng, LI Li-jun, et al. Browse: 579 Check PDF documents

Structural optimization and dynamic characteristic 
analysis of beam of plugin machine


HU Yi-bo, GAO Zi-cheng, LI Li-jun, ZOU Yang, QIAO Zhi-dong

(School of Mechanical and Electrical Engineering, Central South University of 
Forestry and Technology, Changsha 410000, China)


Abstract:  In view of the problem that the plug-in accuracy and speed of the plug-in machine of a company were difficult to meet the work requirements, a lightweight beam structure was designed, and the dynamic characteristics of the beam were studied. Firstly, according to the results of topology optimization, the internal structure of the beam was optimized and designed, and the beam model with good stiffness characteristics was established by comparing the simulation data of the three structures. Then, the mode analysis of the beam-box system was performed, the first six order intrinsic mode shapes of the beam were obtained, and the influence of different cabinet sizes on the natural frequency of the system was analyzed. Finally, based on the results of the modal analysis and the load characteristics, the transient dynamic analysis of the beam was performed, the maximum deformation of the beam during the motion was calculated, and the simulation results were verified by sensor test. The research results show that the beam-box system and the machine tool do not resonate, the weak part of the system is the plug-in head assembly, and reducing the overall thickness of the plug-in head assembly can effectively increase the natural frequency of the system. The maximum deformation of the beam during the plug-in process is 0.032 mm, which appears in the deceleration stage, and the test result of the sensor is 0.035 mm. Compare the two data, the error is small, which can meet the working requirements of the plug-in machine.

Key words:  plug-in machine; structure of the beam; topology optimization; modal analysis; transient dynamics
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