Design for Rapid Prototyping, Manufacturing and Tooling: Guidelines

2014 ◽  
Author(s):  
Jorge Zaragoza-Siqueiros ◽  
Hugo I. Medellín-Castillo
Keyword(s):  
Rapid Prototyping ◽  
Design Guidelines ◽  
Risk Minimization ◽  
Environmental Resistance ◽  
Part Quality ◽  
Corrosion Risk ◽  
Speed Up ◽  
Manufacturing Techniques ◽  
Rapid Prototyping Manufacturing ◽  
Part Orientation

The design is an important step in the development of a product or component; many important decisions affecting the final cost and manufacturability of the product are made at this stage. Therefore several design guidelines for manufacturing and assembly (DFMA), ergonomics, maintenance, standardization, against corrosion, risk minimization, recycling, among others, have been proposed in the literature. The aim of these design guidelines is to provide designers with guidance to reduce costs, manufacturing difficulties, and increase the lifetime of a product. The use of new manufacturing techniques such as rapid prototyping, manufacturing and tooling (RPM&T) are increasing in the industry to speed up the design and development of products. However, there are not design guidelines for these emerging technologies. This paper focuses on establishing design for rapid prototyping, manufacturing and rapid tooling (DFRPM&T) guidelines. These guidelines are based on reviews and analysis of the operating principle, materials, capabilities and limitations of current commercially available RPM&T technologies. The proposed design guidelines are classified into three types: (1) design for rapid prototyping according to the geometric characteristics of the part, (2) part quality requirements, and (3) part costs and sustainability. Important features such as support structures, overhangs, rounded, knife edges, part orientation, path planning, distortion, shrinkage, warping, accuracy, stability, part post-processing, part cost and environmental resistance are considered in the proposed design for RPM&T guidelines.

SLS Process Parameter Optimization to Improve Surface Quality and Accuracy of Polyamide Parts

2021 ◽  
Vol 11 (4) ◽  
pp. 57-74
Author(s):  
Sunil Dutt Baloni ◽  
Somesh K. Sharma ◽  
Jagroop Singh ◽  
Sushant Negi
Keyword(s):  
Surface Roughness ◽  
Layer Thickness ◽  
Surface Quality ◽  
Manufacturing Industry ◽  
Selective Laser Sintering ◽  
Anova Analysis ◽  
Part Quality ◽  
Bed Temperature ◽  
Optimal Surface ◽  
Part Orientation

The contribution of selective laser sintering (SLS) technique in the 4.0 manufacturing industry is undisputedly significant. SLS part quality exhibits high dependence on SLS process parameters and is a major challenge. Therefore, this research aims to investigate the effect of input parameters (i.e., part orientation, bed temperature, and layer thickness) on the surface roughness and accuracy of laser-sintered polyamide specimens. Response surface methodology (RSM) and ANOVA analysis aided the testing and evaluation. Optimal working conditions for minimum shrinkage were 0.17 mm layer thickness, 177.89°C part bed temperature, and part orientation at 88.91 degrees. The surface quality deteriorated with the increment in part bed temperature and layer thickness, and it shows an inverse trend (or improves) with the part orientation in the prescribed range. The optimal surface roughness was at a layer thickness of 0.11 mm, bed temperature at 174.55°C, and part orientation at 86.5 degrees.

scholarly journals The use of rapid prototyping in the joining of fractured historical silver object

2018 ◽  
Vol 24 (3) ◽  
pp. 532-538 ◽  
Author(s):  
Maria Luiza Seixas ◽  
Paulo Santos Assis ◽  
João Cura D’Ars Figueiredo ◽  
Maria Aparecida Pinto ◽  
Daniella Gualberto Caldeira Paula
Keyword(s):  
Rapid Prototyping ◽  
Design Methodology ◽  
Mechanical Stability ◽  
Dimensional Accuracy ◽  
3D Modelling ◽  
Content Type ◽  
Minimal Impact ◽  
Speed Up ◽  
Elemental Chemical Analysis ◽  
Original Metal

Purpose This paper aims to present a proposal for the restoration of a silver crown by means of fitting pieces produced by the process of 3D modelling and rapid prototyping. It also analyses the benefits of this procedure in restoration of objects weakened by corrosive processes. Design/methodology/approach Elemental chemical analysis was carried out in the alloy used in the manufacture of the crown and the constructive and corrosive processes present were studied. Three fitting pieces were modelled and prototyped in wax casting by the stereolithography apparatus system aiming to restore the part and protect the original metal against impacts and external tensions which could speed up some deterioration processes. Findings The procedure presented in this paper has shown that formal and dimensional accuracy, only achieved by means of 3D technologies, made the restoration and mechanical stability of the crown possible without the use of adhesives or welding. Originality/value The proposed procedure is a new restoration alternative which causes minimal impact to the object and abides by the main standards for modern conservation. It is made with metal which is compatible with the original piece, retractable and easily identifiable.

Control of PLC for Paving Stock Mechanism of New-Type Machine Tool about Rapid Prototyping Manufacturing for Ceramic Parts

2010 ◽  
Vol 154-155 ◽  
pp. 1085-1090
Author(s):  
Dong Qiang Gao ◽  
Zhen Ya Tian ◽  
Fei Zhang
Keyword(s):  
Rapid Prototyping ◽  
Machine Tool ◽  
Machine Tools ◽  
Programmable Logic Controller ◽  
Programmable Logic ◽  
New Type ◽  
Type Machine ◽  
Working Principle ◽  
Rapid Prototyping Manufacturing ◽  
Automatic Manufacturing

With the development of the rapid prototyping manufacturing for ceramic parts, it is possible to shorten the manufacturing period of ceramic parts and improve the enterprise’s productivity efficiency. The development situation of the machine tools about rapid prototyping manufacturing for ceramic parts was introduced. A new-style device about rapid prototyping manufacturing for ceramic parts, which is based on the technology of laminated coalition and rapid concrete prototyping for ceramic parts, is designed. The basic constitutions, technical processing and working principle of the paving stock mechanism of the device have also been described. The PLC (programmable logic controller) is applied in the paving stock mechanism for controlling and runs well, which meets the requirements of automatic manufacturing for ceramic parts and improves the efficiency.

Fabrication of artificial bioactive bone using rapid prototyping

2004 ◽  
Vol 10 (5) ◽  
pp. 327-333 ◽  
Author(s):  
Zhongzhong Chen ◽  
Dichen Li ◽  
Bingheng Lu ◽  
Yiping Tang ◽  
Minglin Sun ◽  
...  
Keyword(s):  
Rapid Prototyping ◽  
Bone Growth ◽  
Animal Experiments ◽  
Artificial Bone ◽  
3D Scaffolds ◽  
Morphogenetic Protein ◽  
Speed Up ◽  
A New Technique ◽  
Soluble Material ◽  
Better Than

A new technique based on rapid prototyping (RP) is proposed to fabricate the mould of artificial bone composed of a nontoxic soluble material. The mould has both an external structure that exactly coincides with the replaced natural bone and an internal 3D scaffolds simulating the bone microtubule structure. By injecting self‐setting calcium phosphate cement (CPC) with bone morphogenetic protein (BMP, a kind of bone growth factors) into the cavities of the mould, the CPC solidified and the micropores can be formed after the internal 3D scaffolds is dissolved, finally the artificial bioactive bone can be produced. This approach is better than the traditional fabrication process, which the latter method cannot fabricate an artificial bone with inter‐connective micropores so as to realize the osteo‐induction for lack of bioactivity. Through animal experiments, it shows that the simulated inter‐structure could provide artificial bone with proper voids for the growth of the bone tissue and the quick activation, and hence effectively speed up the bone growth by means of activating osteo‐conduction and osteo‐induction. So, the new method of fabricating artificial bone with biological behaviors is justified.

Application of RPM in the Design and Manufacture of Mobile Front Cover

2014 ◽  
Vol 697 ◽  
pp. 306-309
Author(s):  
Feng Chen
Keyword(s):  
Product Development ◽  
Rapid Prototyping ◽  
New Product Development ◽  
Selective Laser Sintering ◽  
Economic Benefits ◽  
Design Quality ◽  
Front Cover ◽  
Market Competitiveness ◽  
Rapid Prototyping And Manufacturing ◽  
Manufacturing Techniques

Typical molding methods-Selective Laser Sintering (SLS) were presented on the basis of principle, formation, development of RPM(Rapid Prototyping and Manufacturing). Take mobile front cover as the example, the process of making sample used the method of SLS was introduced.RPM technology for rapid product development model, not only can improve the design quality and shorten the trial period, and can be modified at any time by CAD and re-validation, which has strong market competitiveness. RPM is a multi-disciplinary in a modern manufacturing techniques, will be more widely used in areas such as new product development. In short, rapid prototyping technology will be developed into a kind of technology can be adopted widely in enterprise, bring huge economic benefits to the enterprise and society.

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