Rapid metal tooling by applying plasma spraying and rapid prototyping/rapid tooling technology for metal sheet forming

2004 ◽  
Vol 218 (5) ◽  
pp. 509-515 ◽  
Author(s):  
Z Gu ◽  
X Dai ◽  
R Zhang ◽  
Y Yan
Keyword(s):  
Rapid Prototyping ◽  
Plasma Spraying ◽  
Rapid Tooling ◽  
Sheet Forming ◽  
Metal Sheet ◽  
Tooling Technology ◽  
Metal Tooling

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.

Rapid Development of Novel Integrated Pressure Compensating Emitters

2013 ◽  
Vol 457-458 ◽  
pp. 677-683
Author(s):  
Jie Liu ◽  
Gang Lu ◽  
Qing Song Wei ◽  
Yu Sheng Shi
Keyword(s):  
Rapid Prototyping ◽  
Rapid Development ◽  
Rapid Tooling ◽  
Pressure Flow ◽  
Variable Flow ◽  
Flow Channels ◽  
Flow Test ◽  
Tooling Technology ◽  
Integrated Structures

Although pressure compensating emitters (PCE) have many advantages, they are difficult to develop and very costly. Traditional PCE are composed of emitter structures and compensating diaphragms. Their manufacture is very difficult and time-consuming. In this paper, we invented novel PCE with variable flow channels, which are designed as integrated structures with pressure compensating barriers, and manufactured three of them with different structures based on the rapid prototyping/rapid tooling technology. The pressure-flow test showed their behavior indexes were 0.009, 0.008 and 0.011, respectively, indicating this type of novel PCE have remarkable compensating effect.

Manufacture of the die of an automobile deck part based on rapid prototyping and rapid tooling technology

2002 ◽  
Vol 120 (1-3) ◽  
pp. 237-242 ◽  
Author(s):  
Yuhua Song ◽  
Yongnian Yan ◽  
Renji Zhang ◽  
Da Xu ◽  
Feng Wang
Keyword(s):  
Rapid Prototyping ◽  
Rapid Tooling ◽  
Tooling Technology

Rapid tooling using plasma spraying and rapid prototyping

2003 ◽  
Vol 217 (1) ◽  
pp. 97-104 ◽  
Author(s):  
Z Shan ◽  
Y Yan ◽  
R Zhang ◽  
F Qi
Keyword(s):  
Rapid Prototyping ◽  
Plasma Spraying ◽  
Cost Effective ◽  
Rapid Tooling ◽  
Lead Times ◽  
Tsinghua University ◽  
Metal Parts ◽  
Metal Plasma ◽  
Plasma Spraying Process ◽  
Spraying Process

In the race to fabricate a product to market with increases in speed, cost and quality, the drive to economically decrease tooling lead times becomes more important. Rapid tooling (RT) fabricated at Tsinghua University uses a metal plasma spraying process and rapid prototyping (RP) to form a metal tool. The process uses plasma spraying as the heat pool to melt metal powder and then deposit molten metal on to the substrate made by RP. It provides a quick, accurate, simple and relatively cost effective route for producing metal parts or tools, especially for large tools. The process and key technologies are analysed and described in detail. Applications illustrate that the total costs and lead times for new products can be reduced.

Plastic Analysis of Metal Sheet Forming with SD Effects

2013 ◽  
Vol 299 ◽  
pp. 216-220
Author(s):  
Zhen Yu Chen ◽  
Chun Du Wu ◽  
Zhong Xian Wang
Keyword(s):  
Shear Stress ◽  
Yield Criterion ◽  
High Strength ◽  
Sheet Forming ◽  
Metal Sheet ◽  
Film Stress ◽  
Strength Differential ◽  
Thin Film Stress ◽  
Plastic Analysis ◽  
Tension And Compression

Generally, many high-strength alloy materials used in aerospace, power and chemical industries have strength differential effect in tension and compression (SD effects). Usually, in mechanical calculations of sheet metal forming, Treasca yield criterion and Mises yield criterion are applied. Because the yield criterions don’t take SD effects into consideration, the calculation result may have errors for certain materials. However, generalized twin shear stress yield criterion, which takes into account the influence of the intermediate principal stress, is more suitable for most metal materials than Mohr-Coulomb strength theory. Therefore, this article has made plastic analysis on thin film stress issues of metal sheet forming with generalized twin shear stress yield criterion. We have obtained a unified plastic solution to the internal and external stretching issue of thin material with rounded holes and different tension and compression ratio. Providing a new result with wider applicability is very significant.

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 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.

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