Design and Model of a Prosthesis for Hand

Radu,; Roşu, Maria Magdalena; Iliescu, Mihaiela

doi:10.1088/1757-899x/916/1/012093

Cited by 3 publications

(3 citation statements)

References 2 publications

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“…In this case study is presented a method for optimizing the kinematic configuration of the index finger hand prosthesis [12,13], considered as a serial robot. The criterion used in optimization is that of minimizing the deviation from a defined trajectory.…”

Section: Optimizing the Concept For Required Trajectoriesmentioning

confidence: 99%

Mechanical Engineering of Robotic Systems by Solidworks

Dragne¹,

Frenţ²,

Iliescu³

2022

IJMMT

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"The modern design studies involve many aspects of product development starting from the concept-zero, continuing with the evaluation and optimization of the structure designed according to many criteria (kinematics, dynamics, strength of materials of mechatronic systems) and ending with specifications for prototype execution. This article evidences design methodologies used in engineering practice in all the design phases, assisted by the professional CAD program, Solidworks. CAD performances of professional software, by modelling and simulation, contribute to a better evaluation of the research results and to the integration of design into manufacturing phases. These aim to reduce the time from product concept up to it is launched in the market. In the case of robots and complex mechatronic systems, special attention is focused on the mechanical components concept and design so that they enable required motions – trajectory, speed, acceleration. Results of kinematic analysis for two new robotic systems obtained by modelling and simulation using SolidWorks software are presented. There were considered specific phases that are: fully study of requirements; set constraints; concept; 3D CAD model; kinematic analysis; simulation; interpretation of results and conclusion. Finally, relevant benefits of the research for the real case studied are enhanced. By using professional software for evaluations, it is efficient to make video presentations at an outstanding level which summarizes the evaluation of the studied phenomena and enlightens the research results. "

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Section: Optimizing the Concept For Required Trajectoriesmentioning

confidence: 99%

Mechanical Engineering of Robotic Systems by Solidworks

Dragne¹,

Frenţ²,

Iliescu³

2022

IJMMT

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show abstract

“…The first technique used was FDM (fused deposition modeling), the material was biodegradable thermoplastic polymer, PLA, and the equipment was Creality Ender 3-Pro [27]. Only the exterior surface of the index finger was printed for preliminary tests (see Figure 16).…”

Section: Prototyping the Mechatronic System Partsmentioning

confidence: 99%

Concept, Design, Initial Tests and Prototype of Customized Upper Limb Prosthesis

et al. 2021

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This paper presents aspects of the concept and design of prostheses for the upper limb. The objective of this research is that of prototyping a customized prosthesis, with EMG signals that initiate the motion. The prosthesis’ fingers’ motions (as well as that of its hand and forearm parts) are driven by micro-motors, and assisted by the individualized command and control system. The software and hardware tandem concept of this mechatronic system enables complex motion (in the horizontal and vertical plane) with accurate trajectory and different set rules (gripping pressure, object temperature, acceleration towards the object). One important idea is regarding customization via reverse engineering techniques. Due to this, the dimensions and appearance (geometric characteristics) of the prosthesis would look like the human hand itself. The trajectories and motions of the fingers, thumbs, and joints have been studied by kinematic analysis with the matrix–vector method aided by Matlab. The concept and design of the mechanical parts allow for complex finger motion—rotational motion in two planes. The command and control system is embedded, and data received from the sensors are processed by a micro-controller for managing micro-motor control. Preliminary testing of the sensors and micro-motors on a small platform, Arduino, was performed. Prototyping of the mechanical components has been a challenge because of the high accuracy needed for the geometric precision of the parts. Several techniques of rapid prototyping were considered, but only DLP (digital light processing) proved to be the right one.

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“…Thus, using the AM technologies for healthcare customised product could be a greatest transformative potential [2]. The applications of AM in medical industry for manufacturing prosthesis [3,4] -even human organs is becoming an increasingly standard implementation of the technology. But for the moment, the technology must be improved because the accuracy of printed products is not all time according with prescription quality requirements and, sometime the cost of research could be a limit for research.…”

Section: Introductionmentioning

confidence: 99%

Technical and Economic Analysis of Manufacturing Process for High Precision Customized Part

Roşu¹,

Frenţ²,

Iliescu³

2022

IJMMT

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This paper presents research results on optimum manufacturing process for prototyping high precision customized products parts and, therefore, products. The results would be applied to reduce research cost for development of new personalized devices used, for example, in prosthetics of missing limbs. These devices need high precision parts and, not the least, affordable costs. In order to obtain the prototype of these devices, several types of manufacturing processes have been analysed. As conclusion of the research results, we can state that the selection of the best manufacturing process type for obtaining high precision customized parts is a big challenge for engineers as they must get the best technique which ensures high precision (on one hand) and affordable costs (materials and equipment’s, on the other hand). When the prototyped parts are components of a special product, as example, an upper limb prosthesis, high attention should be also focused on the reliability of prototyped parts. 3D printing technologies have developed and extremely evolved lately but still there are cases when their performances are limited (especially when small dimensions and tight tolerances are required for parts’ geometry). Also, considering the component costs, an adequate analysis must be done in order to select the optimal variant of the production process. The research results presented in this paper are focused on the analysis of optimal cost for prototyping customized parts of personalized devices used for the upper limb prosthesis.

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Design and Model of a Prosthesis for Hand

Cited by 3 publications

References 2 publications

Mechanical Engineering of Robotic Systems by Solidworks

Mechanical Engineering of Robotic Systems by Solidworks

Concept, Design, Initial Tests and Prototype of Customized Upper Limb Prosthesis

Technical and Economic Analysis of Manufacturing Process for High Precision Customized Part

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