Rotational micro actuator for microsurgery

Leester-Schädel, Monika; Thies, J.-W.; Schubert, Tim; Büttgenbach, S.; Dietzel, Andreas

doi:10.1007/s00542-014-2069-z

Cited by 4 publications

(5 citation statements)

References 10 publications

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“…A new concept of mini-LSHT is proposed by Leester-Schädel et al [161]. Based on the trochoidal-envelope principle, the mini-hydraulic motor operated at low speed with high torque and was powered by an applied pressure difference.…”

Section: New Scales and Concepts In Gerotor Technologymentioning

confidence: 99%

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A Review of Gerotor Technology in Hydraulic Machines

2019

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Over the years, numerous investigations have established the gerotor fundamentals. This work aims to provide a complete review of the literature from the last decade, focusing on the articles published in the past five years on gerotor technology in hydraulic machines. The report gives a catalogue of guidelines based on the trochoidal-envelope definition, a background analysis, the worldwide distribution of articles in each continent and country and the most frequently used keywords in the field. The paper identifies state-of-the-art research, and reports on current mainstream ideas. From the historical background, this literature review reports the current approaches in gerotor pumps (geometry and performance approaches, modeling and numerical simulations), orbital motors and new concepts. The report will serve as a guide and a directory for novel engineers working with gerotor technology in hydraulic machines. Another intention of this paper is to disseminate the works of the researchers who use this technology around the world, and to provide a scenario for future international collaboration. The paper gives an account of the disparity between academia and engineering applications. There is currently very little published literature on design and production methodologies for gerotor pumps and orbital motors. Hence, the future goal is to collect recommendations that combine academia and industry expertise to make better use of these extensive studies in the field.

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Section: New Scales and Concepts In Gerotor Technologymentioning

confidence: 99%

“…Photography of the manufactured macro prototype (a) and exploded view (b) (Leester-Schädel et al[161]). …”

mentioning

confidence: 99%

A Review of Gerotor Technology in Hydraulic Machines

2019

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“…In the aeronautical field they are used for the lubrication of helicopter gearboxes [9] and aircraft gas turbine engines [10,11]. Other applications are in medical machines [12,13] and even in dispensers for sugar syrup [14].…”

Section: Introductionmentioning

confidence: 99%

Models for Flow Rate Simulation in Gear Pumps: A Review

Rundo

2017

Energies

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Gear pumps represent the majority of the fixed displacement machines used for flow generation in fluid power systems. In this context, the paper presents a review of the different methodologies used in the last years for the simulation of the flow rates generated by gerotor, external gear and crescent pumps. As far as the lumped parameter models are concerned, different ways of selecting the control volumes into which the pump is split are analyzed and the main governing equations are presented. The principles and the applications of distributed models from 1D to 3D are reported. A specific section is dedicated to the methods for the evaluation of the necessary geometric quantities: analytic, numerical and Computer-Aided Design (CAD)-based. The more recent studies taking into account the influence on leakages of the interactions between the fluid and the mechanical parts are explained. Finally the models for the simulation of the fluid aeration are described. The review brings to evidence the increasing effort for improving the simulation models used for the design and the optimization of the gear machines.

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“…[10][11][12] Other geometric approaches for a new tooth profile and innovative design to develop high efficient trochoidal gear pump can be found in Kwon et al, 13 Heisel and Mishev, 14 and Arinaga et al 15 Also, the methodology presented in this paper is not intended to be applied to mini-(<20 mm) and micro-trochoidal gears (<5 mm) owing to the geometry scale factor, kinematic, and fluid dynamics. 16,17 Finally, it is related to the constant volumetric displacement. 18 The structural formatting of the paper is based on the consecutive sections presenting the methodology and inside of each section, the corresponding summary of the best practice rules is provided.…”

Section: Introductionmentioning

confidence: 99%

“…Also, the methodology presented in this paper is not intended to be applied to mini- (<20 mm) and micro-trochoidal gears (<5 mm) owing to the geometry scale factor, kinematic, and fluid dynamics. 16,17 Finally, it is related to the constant volumetric displacement. 18…”

Section: Introductionmentioning

confidence: 99%

Methodology based on best practice rules to design a new-born trochoidal gear pump

Gamez-Montero

Castilla

Codina

2017

Proceedings of the Institution of Mechanical Engineers, Part C:

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The trochoidal-gear pump, also known as gerotor, owing to its remarkable advantages in front other hydraulic pumps is chosen for many engineering applications. As each application is unique, the designer ought to be knowledgeable of the required specifications as a first task but could not be an expert in hydraulic pump design. The review of existing research reveals significant gaps to develop a new-born project and the work presented in this paper, drawn on existing research work and the own authors' experience and know-how, aims to overcome them. Then, the objective of the paper is to provide a summary of best practice rules to design a trochoidal-gear pump from scratch achieving a thorough understanding. In the conceptual stage, making decisions come according to a predetermined set of four parameters known by the designer that will lead to the complete development of the trochoidal-gear set. Afterwards, in the design process, the most important characteristics of the pump such as the porting, the pump construction and the limitations are presented based on significant explanations, meaning of each feature, selection, effects and good practices. As a result, the methodology presented compiles the process of engineering design a new trochoidal-gear pump as a catalog of guidelines aiming to overcome a vague design due to a lack of knowledge. This collection of best practice rules intends to guide the designer taking good decisions early in the design process that limit design change later in the final stage: the prototype.

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Rotational micro actuator for microsurgery

Cited by 4 publications

References 10 publications

A Review of Gerotor Technology in Hydraulic Machines

A Review of Gerotor Technology in Hydraulic Machines

Models for Flow Rate Simulation in Gear Pumps: A Review

Methodology based on best practice rules to design a new-born trochoidal gear pump

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