Wirtschaftliche Fertigung mit Rapid-Technologien

Zäh, Michael F.

doi:10.3139/9783446439573.fm

Cited by 30 publications

(23 citation statements)

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“…Then methodology starts with an appropriate part selection as a key parameter for the product development process. Based on the promising part candidates, deductions for efficient [1]. Companies have a lack of experience with this comparably new technology.…”

Section: Introductionmentioning

confidence: 99%

Holistic approach for industrializing AM technology: from part selection to test and verification

et al. 2017

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the further product development process will be described. This includes approaches for functional integration as well as a methodology for the compilation of part requirements. Those are utilized for a black box methodology, ensuring a time-efficient redesign based on FEA optimization and design rules for additive manufacturing. Best practices for integrating (or in the best case avoiding) traditional technologies are discussed. Based on this, the development of industrialization and test and verification plans for production are shown. This includes the marking of parts for traceability during the whole product lifecycle for quality reasons as well as for product protection. Furthermore, production and production planning are discussed. This is followed by post-processing and testing procedures of the part. The paper will close with a detailed economic view on the topic and some deductions regarding the changes in the supply chain. The methodology itself is discussed and explained on a real sample metal part. The general methodology is discussed on the basis of the space industry but is subject to be adapted to other industries.

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Section: Introductionmentioning

confidence: 99%

Holistic approach for industrializing AM technology: from part selection to test and verification

et al. 2017

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“…In addition, for a sufficiently stable anchoring of the hip cup a high bone resection is necessary which promotes the bone resorption and complicates a revision surgery.Patient-specific hip cups can be used to counteract these problems. However, individual hip cups are only implanted for the treatment of great deformations or tumours in the hip joint due to the time consuming and cost-intensive manufacturing [4]. Within this project a concept for the economical production of human and canine patient-specific hip cup prosthesis has to be established.…”

Section: Introductionmentioning

confidence: 99%

Patient-Individual Hip Cups: Simulation-Based Design and Sheet Metal Forming Manufacturing

Escobar

Bouguecha²,

Almohallami³

et al. 2013

Biomedical Engineering / Biomedizinische Technik

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Abstract:The revision of an hip prosthesis can have diffrent reasons. One frequent cause, especialley after implantation of a conventional cup, is the so called stress-shielding effect which can lead to a migration or loosening. Patientspecific hip cups can be used to counteract this. However, individual hip cups are only implanted for the treatment of great deformations or tumours because of the cost-intensive manufacturing. Within this project a patient-specific hip cup prosthesis has to be developed and manufactured. Besides the numerical design by means of a coupling between multi-body simulation (MBS) and finite element method (FEM), an inovative concept for the production of patientindividual hip prosthesis out of titanium sheets is introduced in this study.Patient-individual hip cups, bone remodelling, reverse engineering, process planning, sheet metal forming

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“…In contrast to conventional manufacturing methods such as milling, turning, or injection moulding, AM technologies build parts layer-by-layer. With the help of a computer-aided design (CAD) model, components can now be produced directly without using tools or moulds [1,2,3,4,5]. In a survey carried out in 1999, about 40 different AM approaches were identified [6].…”

Section: Introductionmentioning

confidence: 99%

Functional Components Produced by Multi-Jet Modelling Combined With Electroforming and Machining

Baier

Witt

2014

The South African Journal of Industrial Engineering

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In fuel cell technology, certain components are used that are responsible for guiding liquid media. When these components are produced by conventional manufacturing, there are often sealing issues, and trouble-and maintenance-free deployment cannot be ensured. Against this background, a new process combination has been developed in a joint project between the University of Duisburg-Essen, the Center for Fuel Cell Technology (ZBT), and the company Galvano-T electroplating forming GmbH. The approach is to combine multi-jet modelling (MJM), electroforming and milling in order to produce a defined external geometry. The wax models are generated on copper base plates and copper-coated to a desirable thickness. Following this, the undefined electroplated surfaces are machined to achieve the desired measurement, and the wax is melted out. This paper presents, first, how this process is technically feasible, then describes how the MJM on a 3-D Systems ThermoJet was adapted to stabilise the process.In the AiF-sponsored ZIM project, existing limits and possibilities are shown and different approaches of electroplating are investigated. This paper explores whether or not activation of the wax structure by a conductive initial layer is required. Using the described process chain, different parts were built: a heat exchanger, a vaporiser, and a reformer (in which pellets were integrated in an intermediate step). In addition, multiple-layer parts with different functions were built by repeating the process combination several times. OPSOMMINGSekere komponente in brandstofsel tegnologie is nodig vir die lei van vloeistowwe. Daar is dikwels seël probleme wanneer hierdie komponente met konvensionele metodes vervaardig word en probleem-en instandhoudingsvrye ontplooiing kan nie gewaarborg word nie. 'n Nuwe proses kombinasie is ontwikkel in 'n gesamentlike projek tussen die Universiteit van Duisburg-Essen se Sentrum vir Brandstofsel Tegnologie en Galvano-T GmbH, 'n vervaardiger wat van elektrovorming gebruik maak. Die benadering is om multi-straalmodellering te kombineer met elektrovorming en freeswerk om 'n eksterne geometrie te produseer. Die waksmodelle word gegenereer op koper basis plate en word met koper bedek tot op die verlangde dikte. Gevolglik word die elektroplateerde oppervlakke gemasjineer tot op die verlangde afmetings en die waks word weggesmelt. Hierdie artikel beskryf hoe dié proses tegnies uitvoerbaar is, asook hoe die multi-straalmodellering op 'n 3-D Systems ThermoJet aangepas is om die proses te stabiliseer. Bestaande beperkings en moontlikhede word uitgelig en verskillende elektroplateringsbenaderings word ondersoek. Die studie ondersoek ook of die waksstruktuur deur 'n aanvanklike geleidingslaag geaktiveer moet word of nie. Verskillende onderdele van die proses is vervaardig, onder andere 'n hitteruiler, 'n verdamper en 'n hervormer. Daarby is meervoudige laag onderdele met verskillende funksies vervaardig deur die proses verskeie kere te herhaal.

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Wirtschaftliche Fertigung mit Rapid-Technologien

Cited by 30 publications

References 0 publications

Holistic approach for industrializing AM technology: from part selection to test and verification

Holistic approach for industrializing AM technology: from part selection to test and verification

Patient-Individual Hip Cups: Simulation-Based Design and Sheet Metal Forming Manufacturing

Functional Components Produced by Multi-Jet Modelling Combined With Electroforming and Machining

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