Analysis and comparison of selected rotary linkage drives for mechanical presses

Yossifon, S.; Shivpuri, Rajiv

doi:10.1016/0890-6955(93)90072-3

Cited by 40 publications

(22 citation statements)

References 1 publication

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“…The method is very complex because the change of the length and position of the each bar in linkage mechanism will have an effect on the motion of the slide of the mechanical press. So some principal problems are usually ignored in research hybrid mechanism course, and the research results don not always coincide with the practice engineering conditions [9][10][11] . The gear differential train has two freedoms, and the ratios of transmission between arbitrary two axes are a constant.…”

Section: Introductionmentioning

confidence: 96%

Study of utilizing differential gear train to achieve hybrid mechanism of mechanical press

Zhao

Zou

et al. 2007

SCI CHINA SER E

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The problems of hybrid input of mechanical press are studied in this paper, with differential gear train as transmission mechanism. It is proposed that "adjustable-speed amplitude" or "differential-speed ratio" is the important parameters for the hybrid input mechanism. It not only defines the amplitude of the adjustable speed, but also determines the ratio of the power of the servomotor to the power of the conventional motor. The calculating equations of the ratio of transmission in all axes, the power of two motors, and the working load distribution are deduced. The two kinds of driving schemes are put forward that the servomotor and the conventional motor simultaneously drive and the servomotor and the conventional motor separately drive. The calculating results demonstrate that the latter scheme can use much lower power of the servomotor, so this scheme makes manufacture and use cost much lower. The latter scheme proposes a feasible way to apply the hybrid mechanism of mechanical press in practice engineering.mechanical press, hybrid mechanism, differential gear train, adjustable-speed

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Section: Introductionmentioning

confidence: 96%

Study of utilizing differential gear train to achieve hybrid mechanism of mechanical press

Zhao

Zou

et al. 2007

SCI CHINA SER E

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show abstract

“…These attempts have focused on increasing the approach and return speeds, respectively, but slowing down the ram speed in the working region of the stroke to provide for controlled forming. Another objective is to maintain the specified load over a relatively long working stroke while simultaneously reducing the crank torque and the frame strength requirements in order to achieve reductions in weight, size and cost of the machine [7]. However, the applicability of that press to the forming industry has not been proven yet.…”

Section: Introductionmentioning

confidence: 98%

Kinematical analysis on the several linkage drives for mechanical presses

Ham

Jang

2009

J Mech Sci Technol

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In this paper, a kinematical analysis is preformed to see mechanical characteristics of various linkage drives for a mechanical press. Mechanical characteristics of conventional and newly designed drives are investigated and compared in terms of slide velocity, productivity, load capacity and possible work-piece size. A crank-slider mechanism with arc crank-pin guide is introduced and analyzed particularly for kinematical performance using kinematical analysis software. The new linkage drive turns out to be effective in terms of load and velocity characteristics and productivity. Kinematical performance also provides a basis for the proper selection of mechanical presses.

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“…(2) from Eq. (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].…”

Section: Methodsmentioning

confidence: 99%

“…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]. 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].…”

Section: Introductionmentioning

confidence: 99%

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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Analysis and comparison of selected rotary linkage drives for mechanical presses

Cited by 40 publications

References 1 publication

Study of utilizing differential gear train to achieve hybrid mechanism of mechanical press

Study of utilizing differential gear train to achieve hybrid mechanism of mechanical press

Kinematical analysis on the several linkage drives for mechanical presses

A dynamic analysis of six-bar mechanical press

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