Seven-bar mechanical press with hybrid-driven mechanism for deep drawing; Part 2: Dynamic modeling and simulation

Li, Hui; Zhang, Yuping

doi:10.1007/s12206-010-0510-5

Cited by 9 publications

(8 citation statements)

References 11 publications

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“…(1), by means of variation, it is possible to obtain discrete values of the inertia moment and its derivative, as well as the reduced moment of the resistance force mechanism [5][6][7]. The digital calculated algorithm of the mechanism includes the following main values: the equations of motion of a strictly secured press machine are indicated below [8][9][10]. Positioning function:…”

Section: Methodsmentioning

confidence: 99%

“…Leverage consists of the main mechanism consisting of four parts of the structural group; their application in technology will not be [5,6]. The reason is, the difficulty of distributing the practice of design engineers in the field of investigation of the mechanism from the structural group of four parts [7][8][9]. Automation and automatic press is carried out by means of processing of the two-lever mechanism of the structural group functionality [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

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A dynamic analysis of six-bar mechanical press

Mukasheva¹,

Japayev²,

Abdraimova³

et al. 2017

Vib. proced.

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This paper analyzes the dynamical behavior of a six-bar linkage used in mechanical presses for metal forming such as deep drawing. Raising the technical level of machines requires an expansion of technological capabilities of the equipment and devices of the existing structures, as well as their equipping with fundamentally new mechanisms. In this regard, the task of developing methods for the dynamic of complex flat lever mechanisms with the desired laws of motion of the input and output elements allowing automatizing the implementation of all design phases with the use of computer is quite relevant. The simulation results obtained with a Maple program are validated by comparing the theoretical values of the input moment with the ones obtained from the conservation of energy law. Content of the article is distinguished by serious problem statement, interesting theoretical study and its practical test. This article provides new scientific results that have theoretical and applied significance.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A dynamic analysis of six-bar mechanical press

Mukasheva¹,

Japayev²,

Abdraimova³

et al. 2017

Vib. proced.

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“…By substituting equation ( 17) into the first equation of equation (16), equation ( 18) can be obtained.…”

Section: Kinetostatic Analysis Of Stephenson II Sixbar Linkagementioning

confidence: 99%

Kinetostatic analysis, manufacturing, and experimental application of a press machine based on Stephenson II mechanism

Jomartov¹,

Halicioglu²,

Kuatova

2021

Proceedings of the Institution of Mechanical Engineers, Part B:

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Press machine tools are often used in important industrial establishments, such as automobiles, aerospace, and aviation; these machine tools must be produced with high precision. Therefore, studies related to improving press tools and enhancing their precision are being conducted. In this study, a press machine tool based on the Stephenson II mechanism is proposed. Compared to that of conventional crank presses, this mechanism increases the slider balance using a ternary link and unique connecting rods. Thus, the slider precision can be improved with a small addition to the mechanism, and load transmission can be ensured in a balanced manner. To test the contribution of the mechanism, dynamic analysis is performed using the kinetostatic method, and the dynamic data of the mechanism are obtained. Subsequently, a press machine prototype is designed and manufactured. The experimental results are verified against the theoretical results, confirming that the proposed press machine tool based on the Stephenson II mechanism has better characteristics than those of the conventional press machine owing to the favorable distribution of forces on the slide and lower reaction to the slide guides.

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“…Li and Tso [19] introduced an iterative learning control scheme for a hybrid-driven servo press, and experimentally verified the expected improvement of the pouch position errors and precision. Li and Zhang [20,21] proposed a two-step optimization process for designing seven-bar and nine-bar hybrid-driven presses for precision drawing. The optimum link dimensions and motion trajectories of the servomotor were determined, and the mechanisms had programmable output motions, higher load capabilities, higher production rates, and lower costs.…”

Section: Introductionmentioning

confidence: 99%

On the New Mechanical Press With a Planetary Gear Train

Soong

2016

Transactions of the Canadian Society for Mechanical Engineering

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A new 1-DOF mechanical press with a geared eight-bar linkage mechanism is presented. The proposed press can generate the required kinematic and dynamic performance for drawing, stamping, deep drawing, and precision cutting processes by simply adjusting the offset of the ram. The press consists of an elementary planetary gear train with a pair of planet gears, a slider-crank mechanism, and a slider-crank mechanism with a variable-length crank. The configuration and a solid model are described, and a kinematic analysis, dynamic analysis, and optimized dimensional synthesis of the press are discussed. Examples are provided to verify the feasibility and effectiveness of the design methodology. The proposed press could lead to more flexible and cost-effective applications.Keywords: geared linkage; dimensional synthesis; kinematic analysis; dynamic analysis; mechanical press. UNE NOUVELLE PRESSE MÉCANIQUE À TRAIN D'ENGRENAGE PLANÉTAIRE RÉSUMÉNous présentons dans cet article une nouvelle presse mécanique à 1-ddl munie d'un mécanisme de liaison à huit barres. La presse qui est proposée peut générer la performance cinématique et dynamique nécessaire pour les opérations de formation, d'emboutissage, d'emboutissage profond et coupe de précision simplement en ajustant la mémoire active (RAM). La presse se compose d'un train d'engrenage élémentaire avec une paire d'engrenages planétaires, un mécanisme bielle-manivelle, et un mécanisme bielle-manivelle de longueur variable. La configuration ainsi qu'un modèle sont décrits, l'analyse dynamique et une optimisation de la synthèse dimensionnelle de la presse sont discutées. Des exemples sont donnés pour vérifier la faisabilité et l'efficacité de la méthode de conception. La presse proposée pourrait servir pour des applications flexibles et efficaces d'un point de vue économique.Mots-clés : train d'engrenage; synthèse dimensionnelle; analyse cinématique; analyse dynamique; presse mécanique.

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Seven-bar mechanical press with hybrid-driven mechanism for deep drawing; Part 2: Dynamic modeling and simulation

Cited by 9 publications

References 11 publications

A dynamic analysis of six-bar mechanical press

A dynamic analysis of six-bar mechanical press

Kinetostatic analysis, manufacturing, and experimental application of a press machine based on Stephenson II mechanism

On the New Mechanical Press With a Planetary Gear Train

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