Dynamic analysis of closed high-speed precision press: Modeling, simulation and experiments

Jia, Fang; Fei, Xu

doi:10.1177/0954406213517093

Cited by 2 publications

(1 citation statement)

References 22 publications

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“…element analysis software package, to reduce vibration and increase the work performance of high-speed presses [7]. Jia and Fang [8] proposed a three-degree-of-freedom (DOF) dynamic model of mass spring damping which accurately predicted the dynamic response of a closed high-speed precision press. Zheng and Xiang [9][10][11] analyzed the speed variation, repeatability, and vibration damping performance of high-speed presses using a finite element method.…”

Section: Introductionmentioning

confidence: 99%

A study of the influence of high-speed press bottom dead-center displacement and fluctuation on motor core products

Lee

Kim²,

Lee³

et al. 2020

J Braz. Soc. Mech. Sci. Eng.

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Motor cores demand precision for the purpose of product shape refinement and to increase the performance. To enhance the lamination method and the efficiency of the product, the material thickness is becoming thinner. In addition, press machines require a mass-production system with high precision. In an experiment, the effects of the displacement and fluctuations of the bottom dead center on a high-speed press were investigated. The experiment was carried out by sequentially increasing the press speed from 50 to 130 and 270 spm. The bottom dead-center displacement levels of the press were 0 mm at 50 spm and 0.05 mm at 130 spm. At the speed 270 spm, the bottom dead-center displacement increased from 0.1 to 0.15 mm. As a result of analyzing the types of bottom dead-center fluctuation, a change from 61 to 273 μm was considered. The required height to guarantee the quality of the motor core embossing outcome is 0.05 mm, which can be realized by fine adjustments of the mold at a fluctuation level of 61 μm. The embossing process leads to piercing at the fluctuations of 85-89 µm and 273 µm, requiring a total press overhaul or partial repair. In this paper, as the press speed increases, the bottom dead-center displacement increases and the bottom dead-center fluctuation affects the forming results of the embossing process.

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Section: Introductionmentioning

confidence: 99%

A study of the influence of high-speed press bottom dead-center displacement and fluctuation on motor core products

Lee

Kim²,

Lee³

et al. 2020

J Braz. Soc. Mech. Sci. Eng.

View full text Add to dashboard Cite

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Combined Vibration Isolator of Disc Springs for Closed High-Speed Precision Press: Design and Experiments

Jia

Fei

2014

Transactions of the Canadian Society for Mechanical Engineering

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The structure, strength, and stiffness of disc springs are analyzed or investigated. Based on the previous studies, two finite element models of combined disc springs are established and their loading and unloading deformation patterns are analyzed to determine the optimal combination of disc springs for a desirable vibration isolator of high-speed press. The structural parameters and loading data of JF75G-200 high-speed press are used for simulation and other experiments. The dynamic working points of disc springs in different combinations are drawn, and complete test data are collected. Results show that combined vibration isolator, an isolator with nonlinearly combined disc springs functioning as a whole for vibration isolation, is the best choice. Results from both simulation and tests confirm the feasibility and validity of the proposed isolator. The isolator can efficiently minimize the vibration of the high-speed press.

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Dynamic analysis of closed high-speed precision press: Modeling, simulation and experiments

Cited by 2 publications

References 22 publications

A study of the influence of high-speed press bottom dead-center displacement and fluctuation on motor core products

A study of the influence of high-speed press bottom dead-center displacement and fluctuation on motor core products

Combined Vibration Isolator of Disc Springs for Closed High-Speed Precision Press: Design and Experiments

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