Kinematical analysis on the several linkage drives for mechanical presses

Ham, Kyung Chun; Jang, Dong Hwan

doi:10.1007/s12206-008-1015-3

Cited by 5 publications

(3 citation statements)

References 5 publications

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“…Of the known mechanical presses (Lange, 1995;Ham and Jang, 2009;Halicioglu, 2015aHalicioglu, , 2015b, the student project discussed in this paper refers to a crank-slider press driven from a motor via a belt, in series with a pinion-gear pair, as shown in Figure 1 (Karakoulidis, 2015;Convergence Training, 2021). Each student chooses their own specification for the press according to the recommendations in Table 1, and perform the design and calculations steps listed in Appendix 1.…”

Section: Project Statementmentioning

confidence: 99%

A comprehensive punch-press project for an undergraduate course on mechanical systems design

Simionescu,

Constans

2022

IJSPR

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In this paper, a semester-long project for an undergraduate mechanical-systems-design course is presented. The project requires students to perform kinematic and load torque analysis of a crank-driven punch press, choose a suitable electric motor, and calculate the moment of inertia of the flywheel such that an imposed coefficient of speed fluctuation is ensured. Then students select a pair of sheaves and the V-belt of the first stage of the press transmission, and size for endurance the second stage consisting of a pinion-shaft and the mating gear. In the process, students perform kinematic and energy balance calculations which they compare with Working Model 2D simulations of the crank press. While collaboration is encouraged, students choose their own set of design parameters, and present their work as individual written reports. This comprehensive project was very well received by the undergraduate mechanical engineering students at Texas A&M University Corpus Christi and can be adopted as is or with modifications at other universities.

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Section: Project Statementmentioning

confidence: 99%

A comprehensive punch-press project for an undergraduate course on mechanical systems design

Simionescu,

Constans

2022

IJSPR

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“…Although the working mechanism of servo press is basically the same as that of common mechanical press, their design principles are quite different, due to the different working requirements. For the common mechanical presses, the design of the working mechanisms usually focuses on the kinematic characteristics: proper and steady speed in the working stroke, meeting the requirements of the forming process [21][22][23][24]. The mechanical advantage, although mentioned in some documents for mechanism optimization, is usually not a key factor.…”

Section: Introductionmentioning

confidence: 99%

Decomposition analysis and peak stagger design for Crank-triangular linkage-elbow mechanism of mechanical servo presses

Sun

Liang-mo

et al. 2021

Mechanics & Industry

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High mechanical advantage as well as low and steady slide speed within the working stroke Sn are the fundamental requirements for the working mechanism of servo-mechanical press. Currently, the Crank-Triangular Linkage-Elbow (CTLE) mechanism has attracted more and more attention from researchers and manufacturers of servo presses. This paper presents a new analysis and design method of CTLE. The mechanism is decomposed into two sub-units: crank and triangular-linkage elbow, followed by the kinematic and force analysis of each sub-unit. The influences of each structural parameter on the working performance are obtained and can be used as the basis for preliminary design. Through the offset design, the mechanical advantage peaks of the two units, MA1max and MA2max, do not occur at the same time: MA1max is located near Sn, while MA2max is just at BDC (Bottom Dead Center). Because the mechanical advantage of the whole mechanism is the product of the two subunits, the designed mechanism can obtain high and steady mechanical advantage together with low and steady slide speed within Sn. After preliminary design, the scheme can be further modified by numerical simulation and optimization. Hence the design efficiency can be improved.

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“…He presented a practical experiment on a Stephenson III six-bar linkage press for illustration of the convincing validity of the approach. Ham and Jang 12 presented a kinematic analysis of the mechanical characteristics of conventional as well as newly designed press drives, whereby the slide velocity, productivity, load capacity, and possible work-piece size were compared.…”

Section: Introductionmentioning

confidence: 99%

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

Jia

Fei

2013

Proceedings of the Institution of Mechanical Engineers, Part C:

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To forecast the dynamic responses of closed high-speed precision press accurately, a 3-degree-of-freedom (DOF) dynamic model of mass-spring damping is proposed in this work. This model operates by using the centralized parameter method. Considering the instantaneity of impact load, we employ impulse simulation to simulate the periodic impact working conditions of a JF75G-200 high-speed press using both 2-DOF and 3-DOF models. Simulation data on the dynamic responses of the press are acquired and compared with the results from on-site measuring. The proposed 3-DOF dynamic model of mass-spring damping has been proven by our simulation and test to be reliable as well as effective for detecting the dynamic responses of the press.

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Kinematical analysis on the several linkage drives for mechanical presses

Cited by 5 publications

References 5 publications

A comprehensive punch-press project for an undergraduate course on mechanical systems design

A comprehensive punch-press project for an undergraduate course on mechanical systems design

Decomposition analysis and peak stagger design for Crank-triangular linkage-elbow mechanism of mechanical servo presses

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

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