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.

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.

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

scholarly journals Rapid Development of an Injection Mold with High Cooling Performance Using Molding Simulation and Rapid Tooling Technology

Micromachines ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 311
Author(s):  
Chil-Chyuan Kuo ◽  
Trong-Duc Nguyen ◽  
Yi-Jun Zhu ◽  
Shi-Xun Lin
Keyword(s):  
Polyurethane Foam ◽  
Rapid Development ◽  
Cost Savings ◽  
Rapid Tooling ◽  
Injection Mold ◽  
Conformal Cooling ◽  
Cooling Performance ◽  
Suitable Material ◽  
Cooling Channels ◽  
Tooling Technology

Rapid tooling technology (RTT) provides an alternative approach to quickly provide wax injection molds for the required products since it can reduce the time to market compared with conventional machining approaches. Removing conformal cooling channels (CCCs) is the key technology for manufacturing injection mold fabricated by rapid tooling technology. In this study, three different kinds of materials were used to fabricate CCCs embedded in the injection mold. This work explores a technology for rapid development of injection mold with high cooling performance. It was found that wax is the most suitable material for making CCCs. An innovative method for fabricating a large intermediary mold with both high load and supporting capacities for manufacturing a large rapid tooling using polyurethane foam was demonstrated. A trend equation for predicting the usage amount of polyurethane foam was proposed. The production cost savings of about 50% can be obtained. An optimum conformal cooling channel design obtained by simulation is proposed. Three injection molds with different cooling channels for injection molding were fabricated by RTT. Reductions in the cooling time by about 89% was obtained. The variation of the results between the experiment and the simulation was investigated and analyzed.

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.

Rapid prototyping of cognitive agent simulations using C-BML transformations

2019 ◽  
Vol 17 (2) ◽  
pp. 155-173
Author(s):  
Okan Topçu ◽  
Levent Yilmaz
Keyword(s):  
Rapid Prototyping ◽  
Rapid Development ◽  
Cognitive Agent ◽  
Simulation Code ◽  
System Architectures ◽  
Model Driven ◽  
Reasoning System ◽  
Development Costs ◽  
Code Domain ◽  
Goal Reasoning

Simulating battle management is an essential technique used in planning and mission rehearsal as well as training. Simulation development costs tend to be high due to the complexity of cognitive system architectures in such applications. Due to this complexity, it takes significant effort for a simulation developer to comprehend the problem domain enough to capture accurately in a simulation code. Domain-specific languages (DSL) play an important role in narrowing the communication gap between the domain user and the developer and hence facilitate rapid development. In command and control (C2) applications, the coalition battle management language (C-BML) serves as a DSL for exchanging battle information among C2 systems, simulations, and autonomous elements. In this article, we use a rapid prototyping framework for cognitive agents and demonstrate deployment of agent systems by adopting the model driven engineering approach. To this end, we extend the use of C-BML and automatically transform it in a cognitive agent model, which is then used for adaptive decision making at runtime. As a result, during a simulation run, it is possible to initialize and modify an agent’s goal reasoning model. The cognitive agent models are based on the deliberative coherence theory, which provides a goal reasoning system in terms of coherence-driven agents.

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