On a novel press system with six links for precision deep drawing

Hsieh, Wen-Hsiang; Tsai, Chia-Heng

doi:10.1016/j.mechmachtheory.2010.09.002

Cited by 21 publications

(14 citation statements)

References 19 publications

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“…where -accumulated coordinates, ( ), the reduced moment of inertia and its production from the accumulated coordinates, , The forces accumulated in motion and accordingly resistance forces [3][4]. In this algorithm Eq.…”

Section: Methodsmentioning

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%

“…The more complicated device of the lever transmission, the analysis and synthesis of such mechanisms will be difficult [2]. Therefore, a two-part structural group will be used for practice [3]. Leverage consists of the main mechanism consisting of four parts of the structural group; their application in technology will not be [5,6].…”

Section: Introductionmentioning

confidence: 99%

A dynamic analysis of six-bar mechanical press

Mukasheva¹,

Japayev²,

Abdraimova³

et al. 2017

Vib. proced.

View full text Add to dashboard Cite

show abstract

“…Nowadays, demands on the motion flexibility of mechanical press are increasing. For instance, the stroke has to be changed according to different thicknesses in sheet metal forming, the ram velocity has to be altered to meet different stress-strain relationships in precision forming, and it has to be flexible to produce diverse products quickly to meet market demands (Hsieh and Tsai, 2011, Soong, 2010, Yossifon et al, 1991.…”

Section: Introductionmentioning

confidence: 99%

On the synthesis of a geared adjustable stroke mechanism

Parlaktaş

2018

JAMDSM

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This study presents novel analysis and synthesis methods for a certain type of geared adjustable stroke mechanism. The mechanism has significance in mechanical design, as it has been used in practice. However, to the best of our knowledge, any theory on its analysis or synthesis is not available in the literature. The problem is divided into four parts and each part is generalized. Novel synthesis procedures for possible largest stroke are developed. Design charts are prepared for maximum stroke configuration. Stroke variation is an important concern in mechanism design. By adopting the introduced method, the output stroke can simply be adjusted even during the operation. The output stroke of the mechanism can be decreased more than 50% with proper transmission, velocity and acceleration characteristics. Use of non-integer gear ratio is also investigated. That property leads a variable stroke mechanism inherently. The relationship between the gear ratio and the number of cycles needed to return to the initial stroke value is determined. As a result, all possible design methods are investigated and generalized for this mechanism. Therefore, significant flexibility is introduced for adapting this mechanism to various practical applications.

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“…Soong [9] proposed a method for obtaining the desired kinematic performance of a mechanical press by varying the length and speed of the driving links. Hsieh and Tsai [10,11] designed a new press system for precision deep drawing with six links driven by an Oldham coupling. Hsieh [12,13] proposed studies on kinetostatic and mechanical efficiency of cam-controlled planetary gear trains and verify the validity of the proposed approaches by experimental tests.…”

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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On a novel press system with six links for precision deep drawing

Cited by 21 publications

References 19 publications

A dynamic analysis of six-bar mechanical press

A dynamic analysis of six-bar mechanical press

On the synthesis of a geared adjustable stroke mechanism

On the New Mechanical Press With a Planetary Gear Train

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