Application of rapid prototyping and rapid tooling for development of patient-specific craniofacial implant: an investigative study

2007 ◽  
Vol 36 (5-6) ◽  
pp. 510-515 ◽  
Author(s):  
Palash Kumar Maji ◽  
P. S. Banerjee ◽  
A. Sinha
Keyword(s):  
Rapid Prototyping ◽  
Rapid Tooling ◽  
Patient Specific

scholarly journals Rapid tooling: A major shift in tooling practice

2015 ◽  
Vol 14 (3-4) ◽  
Author(s):  
Azhar Equbal ◽  
Anoop Kumar Sood ◽  
Mohammad Shamim
Keyword(s):  
Rapid Prototyping ◽  
Lead Time ◽  
Rapid Tooling ◽  
Rapid Manufacturing ◽  
Dynamic Impact ◽  
Market Situation ◽  
Cad Models ◽  
Engineering Environment ◽  
Major Shift

<p>To solve the tool-making bottleneck, it is fundamental to integrate rapid manufacturing methodologies for rapid tooling, which reduces the lead-time to manufacture the tools while improving their quality. Rapid tooling (RT) is a progression of rapid prototyping (RP). RT is the art of producing tooling directly from CAD models of the part. RT technology plays a major role in increasing the pace of tooling development. This paper describes the role of RT according to the current market situation. An ample review of examples of rapid tooling indicates a new trend of tooling practice. This trend in manufacturing based on rapid prototyping and rapid tooling has already had a dynamic impact on the engineering environment.</p>

scholarly journals 3D MODELLING AND RAPID PROTOTYPING FOR CARDIOVASCULAR SURGICAL PLANNING – TWO CASE STUDIES

2016 ◽  
Vol XLI-B5 ◽  
pp. 887-893 ◽  
Author(s):  
E. Nocerino ◽  
F. Remondino ◽  
F. Uccheddu ◽  
M. Gallo ◽  
G. Gerosa
Keyword(s):  
3D Printing ◽  
Rapid Prototyping ◽  
Case Studies ◽  
Surgical Planning ◽  
Heart Diseases ◽  
Coronary Vessels ◽  
3D Modelling ◽  
Patient Specific ◽  
Surface Model ◽  
Medical Imagery

In the last years, cardiovascular diagnosis, surgical planning and intervention have taken advantages from 3D modelling and rapid prototyping techniques. The starting data for the whole process is represented by medical imagery, in particular, but not exclusively, computed tomography (CT) or multi-slice CT (MCT) and magnetic resonance imaging (MRI). On the medical imagery, regions of interest, i.e. heart chambers, valves, aorta, coronary vessels, etc., are segmented and converted into 3D models, which can be finally converted in physical replicas through 3D printing procedure. In this work, an overview on modern approaches for automatic and semiautomatic segmentation of medical imagery for 3D surface model generation is provided. The issue of accuracy check of surface models is also addressed, together with the critical aspects of converting digital models into physical replicas through 3D printing techniques. A patient-specific 3D modelling and printing procedure (Figure 1), for surgical planning in case of complex heart diseases was developed. The procedure was applied to two case studies, for which MCT scans of the chest are available. In the article, a detailed description on the implemented patient-specific modelling procedure is provided, along with a general discussion on the potentiality and future developments of personalized 3D modelling and printing for surgical planning and surgeons practice.

scholarly journals Moldes de ABS construídos pelo processo de modelagem por fusão e deposição para injeção de PP e PEBD

Polímeros ◽  
2004 ◽  
Vol 14 (5) ◽  
pp. 349-353 ◽  
Author(s):  
José A. Foggiatto ◽  
Carlos H. Ahrens ◽  
Gean V. Salmoria ◽  
Alfredo T. N. Pires
Keyword(s):  
Rapid Prototyping ◽  
Rapid Tooling

Os processos de prototipagem rápida (Rapid Prototyping - RP) e ferramental rápido (Rapid Tooling - RT) surgiram para reduzir os tempos de desenvolvimento de produtos na fase de projeto diminuindo a necessidade de retrabalhos e, conseqüentemente, antecipando a entrada de novos produtos no mercado. Neste trabalho foi utilizada uma das tecnologias de prototipagem rápida, denominada Modelagem por Fusão e Deposição (FDM), na construção de moldes em ABS com o objetivo de investigar sua aplicação na moldagem por injeção de termoplásticos. Amostras das peças injetadas foram submetidas a ensaios de difração de raios X, dureza Shore D e tração. Os resultados mostraram a viabilidade de fabricar pequenos lotes de peças em PEBD e PP com propriedades mecânicas bastante similares às encontradas em peças moldadas em moldes metálicos.

A rapid prototyping-based methodology for patient-specific contouring of osteotomy plates

2019 ◽  
Vol 25 (5) ◽  
pp. 888-894
Author(s):  
Behnam Gomari ◽  
Farzam Farahmand ◽  
Hassan Farkhondeh
Keyword(s):  
Rapid Prototyping ◽  
Locking Plate ◽  
Patient Specific ◽  
Osteotomy Site ◽  
Content Type ◽  
Tibial Plate ◽  
Important Challenge ◽  
Surgical Application ◽  
Bone Fragments ◽  
Plate Spring

Purpose An important challenge of the osteotomy procedures, particularly in the case of large and complex corrections, is the fixation of the osteotomy site. The purpose of this study is to propose a practical and cost-effect methodology for the plate adapting problem of osteotomy surgery. Design/methodology/approach A novel patient-specific plate contouring methodology, based on rapid prototyping (RP) and multi-point forming (MPF) techniques, was developed and evaluated. In this methodology, a female mold is fabricated by RP, based on the geometry of the osteotomy site and estimation of the plate spring back. The mold is then used to configure a MPF die, which is then used for press forming of the factory-made locking plate. The applicability of the methodology was assessed in two case studies. Findings The results of implementing the methodology on a femoral and a tibial locking plate indicated very good conformity with the underlying bone, in both the frontal and sagittal planes. The surgical application of the pre-operatively contoured tibial plate facilitated the plate locating and screw inserting procedures, and provided a secure fixation for bone fragments. Practical implications The results are promising and provide a proof of concept for the feasibility and applicability of the proposed methodology in clinical practice, as a complementary to the existing surgical preplanning and patient-specific instrument preparations. Originality/value The advantageous features of RP and the MPF were used to provide a solution for the plate adapting problem of osteotomy surgery.

Process Analysis for Rapid Tooling Technology Based on Rapid Prototyping

2011 ◽  
Vol 216 ◽  
pp. 798-803 ◽  
Author(s):  
Hong Pu Liu ◽  
Jun Su ◽  
Xiao Jing Li
Keyword(s):  
Rapid Prototyping ◽  
Process Analysis ◽  
Rapid Tooling ◽  
Production Cycle ◽  
Fabrication Cost ◽  
Modeling Process ◽  
Working Principle ◽  
The Difference ◽  
Tooling Technology

This paper discussed the working principle, classification, modeling process and technology features for rapid tooling based on rapid prototyping and investigated into the difference between rapid tooling with traditional modeling manufacture. Several typical rapid tooling technologies are compared and summarized from mould period, fabrication cost and production cycle. Some key problems that rapid tooling industry will face with are analyzed. The application of the rapid tooling based on rapid prototyping is prospected.

Hybrid Tooling Using High Speed Cutting and Other RP (Rapid Prototyping) Technologies

2009 ◽  
Vol 620-622 ◽  
pp. 437-440
Author(s):  
Hong Kyu Kwon ◽  
Kwang Soo Kim
Keyword(s):  
Injection Molding ◽  
Rapid Prototyping ◽  
Market Share ◽  
High Speed ◽  
Business Environment ◽  
Rapid Tooling ◽  
High Speed Cutting

“Getting to market first” is extremely intensive pressure on the companies in this competitive business environment. The speed at which products are developed and released to market is tightly linked to profitability and market share. Hence, many companies are still in a desperate need of real Rapid Tooling (RT) technologies which can really help expedite their prototype tooling and pre -production tooling for injection molding. This paper describes how HT (Hybrid Tooling) process has been being successfully established and effectively applied with Metal filled SLS technologies.

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