Development and Implementation of a Design for Producibility Method for Precision Planar Stamped Products

1994 ◽  
Vol 116 (2) ◽  
pp. 349-356 ◽  
Author(s):  
J. M. Schmitz ◽  
S. Desa
Keyword(s):  
Design Methodology ◽  
General Concept ◽  
Design Development ◽  
Initial Design ◽  
Knowledge Based ◽  
Development Methodology ◽  
Computer Environment ◽  
Manufacturing Techniques ◽  
Design And Manufacture ◽  
Mapping Scheme

In this paper, we establish the Design for Producibility Design Development Methodology for stamped products which integrates both the design and manufacture of the stamped product. The general concept of considering manufacturing techniques at the initial design stages, often termed Design for Manufacturability, is certainly not novel. However, the proper implementation of this concept is not so widely understood. Our proposed method permits the product designer to control both product functionality (which he has incorporated into an initial design) and subsequent manufacturing costs through an iterative re-design process. The key step in this method is the mapping scheme from the final product design domain to the manufacturing domain; this scheme captures the cause-effect relations between design (and thus functional) specifications and manufacturing requirements and costs. We also describe the implementation of the design methodology in a knowledge-based computer environment called the Producibility Evaluation Package (P.E.P.) that, as a result of the design methodology, also automatically generates much of the process plan.

The Development and Implementation of a Design for Producibility Method for Precision Planar Stamped Products

1989 ◽  
Author(s):  
J. M. Schmitz ◽  
S. Desa
Keyword(s):  
Design Methodology ◽  
General Concept ◽  
Design Development ◽  
Manufacturing Costs ◽  
Knowledge Based ◽  
Development Methodology ◽  
Computer Environment ◽  
Manufacturing Techniques ◽  
Design And Manufacture ◽  
Mapping Scheme

Abstract In this paper we establish the Design For Producibility Design Development Methodology for stamped products which integrates both the design and manufacture of the stamped product. The general concept of considering manufacturing techniques at the initial design stages, often termed Design For Manufacturability, is certainly not novel. However, the proper implementation of this concept is not so widely understood. Our proposed method permits the product designer to control both part functionality and subsequent manufacturing costs through an iterative re-design process. The key step in this method is the mapping scheme from the final part design to the manufacturing domains, namely the die sections, the punching tools, and the basics of the strip layout. We also describe the implementation of the design methodology in a knowledge-based computer environment, called the Producibility Evaluation Package (P.E.P.).

The Application of Computer Techniques in the Design and Manufacturing of Timing Scrolls

1993 ◽  
Vol 207 (2) ◽  
pp. 99-108
Author(s):  
L Q Tang ◽  
D N Moreton
Keyword(s):  
Dynamic Characteristic ◽  
Computer Aided Design ◽  
Numerical Control ◽  
Feeding Mechanism ◽  
Control Techniques ◽  
Computer Aided ◽  
Design And Manufacturing ◽  
Manufacturing Techniques ◽  
Aided Design ◽  
Design And Manufacture

The timing scroll is an important feeding mechanism on packaging lines. As packaging line speeds have increased and the shape of containers has become more diverse, the techniques used for the design and manufacture of such timing scrolls have become critical for successful packaging line performance. Since 1980, various techniques have evolved to improve scroll design, manufacture and the associated line performance. In recent years, as CAD (computer aided design), CAM (computer aided manufacture) and CNC (computer numerical control) techniques have evolved, scroll design and manufacturing techniques began to be linked with computer techniques. In this paper, a scroll design and manufacturing package is presented which can be run on a minicomputer, such as a μ-VAX on an IBM PC clone. This scroll package can produce a timing scroll for any type of container with a correct pocket shape and good dynamic characteristic. Tests using carefully chosen containers have been made using this package and the results indicate that the scrolls obtained by this package have the correct pocket shape and good line performance. However, the design of a good pick-up geometry for some container shapes remains a problem.

Heuristic Design of a Material Processing Component

1990 ◽  
Author(s):  
Vikram R. Jamalabad ◽  
Noshir A. Langrana ◽  
Yogesh Jaluria
Keyword(s):  
Heuristic Search ◽  
Expert Knowledge ◽  
Object Oriented ◽  
Engineering Process ◽  
Efficient Design ◽  
Cross Sectional ◽  
Design Algorithm ◽  
Initial Design ◽  
Knowledge Based ◽  
Processing Component

Abstract The main thrust of this research is in developing a knowledge-based system for the design of a mechanical engineering process. The study concentrates on developing methodologies for initial design and redesign in a qualitative format. The component selected is a die for plastic extrusion. A design algorithm using best first heuristic search and expert knowledge, both in procedural and declarative form, forms the core of the process. Initial design and redesign methodologies are presented that can enable efficient design of a component using expert knowledge. Some generality has been accomplished by the implementation of the techniques to dies of different cross sectional shapes. The software is written in Lisp within an object oriented software package using analysis modules written in C.

A Structured Design Methodology and Metadesigner: A System Shell Concept for Computer Aided Creative Design

1989 ◽  
Author(s):  
C. R. Liu ◽  
J. C. Trappey
Keyword(s):  
Design Process ◽  
Design Methodology ◽  
Design Space ◽  
Structured Design ◽  
Programming Paradigm ◽  
Knowledge Based ◽  
Design Structure ◽  
Hierarchical Nature ◽  
Design Options ◽  
Human Designer

Abstract This paper discusses the concept of managing the design process using Objected Oriented Programming Paradigm. A software system shell, called MetaDesigner is being developed for aiding the human designer to create new designs, based on the hierarchical nature of the design space. This system shell is intended to have the following capabilities: (1) interactive and system-guided design process to analyze design structure and to characterize design options, (2) to provide interactive and system-guided knowledge acquisition, classification, and retrieval to achieve machine learning, and (3) to build a flexible and forever expandable structure for knowledge-based system implementation.

Ontology Theory, Management and Design

2010 ◽  
pp. 27-77 ◽  
Author(s):  
Wassim Jaziri ◽  
Faiez Gargouri
Keyword(s):  
Software Tools ◽  
Ontology Development ◽  
Semantic Structure ◽  
Knowledge Based Systems ◽  
Specific Domain ◽  
Knowledge Based ◽  
Development Methodology ◽  
Developing Knowledge

Ontologies now play an important role in providing a commonly agreed understanding of a domain and in developing knowledge-based systems. They intend to capture the intrinsic conceptual and semantic structure of a specific domain. Many methodologies, tools and languages are already available to help anthologies’ designers and users. However, a number of questions remain open: what ontology development methodology provides the best guidance to model a given problem, what steps to be performed in order to develop an ontology? which techniques are appropriate for each step? how ontology’ lifecycle steps are upheld by the software tools? how to maintain an ontology and to evolve it in a consistent way? how to adapt an ontology to a given context? To provide answers to these questions, the authors review in this chapter the main methodologies, tools and languages for building, updating and representing ontologies that have been reported in literature.

A Survey of FPGA Dynamic Reconfiguration Design Methodology and Applications

2012 ◽  
Vol 3 (2) ◽  
pp. 23-39 ◽  
Author(s):  
Ming Liu ◽  
Zhonghai Lu ◽  
Wolfgang Kuehn ◽  
Axel Jantsch
Keyword(s):  
Design Process ◽  
Design Methodology ◽  
Dynamic Reconfiguration ◽  
Dynamic Partial Reconfiguration ◽  
Development Methodology ◽  
Technical Requirements ◽  
Reconfigurable Design ◽  
On Chip ◽  
Time Division ◽  
Engineering Projects

FPGA Dynamic Partial Reconfiguration (DPR or PR) technology has emerged and become gradually mature in the recent years. It provides the Time-Division Multiplexing (TDM) capability in utilizing on-chip resources and leads to significant benefits in comparison with conventional static designs. However, the partially reconfigurable design process features additional complexity and technical requirements to the FPGA developers. Hence, PR design approaches are being widely explored and investigated to systematize the development methodology and ease the designers. In this paper, the authors collect several research and engineering projects in this area and present a survey of the design methodology and applications of PR. Research aspects are discussed in various hardware/software layers.

From Creative Ideas Generation to Real World Solutions

2011 ◽  
Vol 2 (2) ◽  
pp. 31-48
Author(s):  
François Rousselot ◽  
Cecilia Zanni-Merk ◽  
Françoi de Bertrand de Beuvron
Keyword(s):  
Creative Thinking ◽  
Design Methodology ◽  
Idea Generation ◽  
Main Interest ◽  
Creative Idea ◽  
The Past ◽  
Knowledge Based ◽  
Future State ◽  
Technical Systems ◽  
Dialectical Analysis

The first stages of the creative inventive process are devoted to choosing the problem and redefining its conditions. Most of the time, the original statement of the problem is imprecise, and occasionally even incorrect. This is why it is necessary to have mechanisms to help structure the creative thinking of a set of experts during their analysis of the problem, by providing them a knowledge-based framework. This article presents the first stages of IDM (Inventive Design Methodology). IDM is a set of methodological tools whose main interest is the evolution of technical systems. The methodology proposes a dialectical analysis of the technical system, which focuses on the past, present, and future state of the artifacts, and the most likely transitions between them. This analysis also identifies the influences (positive or negative) that the changes done to certain elements in the system may have on other elements of the system. The use of these methodological tools provides the needed structuring framework to the experts’ creative idea generation.

Hybrid system approach to optimum design of a ship

1999 ◽  
Vol 13 (1) ◽  
pp. 1-11 ◽  
Author(s):  
DONGKON LEE
Keyword(s):  
Optimum Design ◽  
Hybrid System ◽  
Optimization Algorithm ◽  
Search Method ◽  
Design Stage ◽  
Search Efficiency ◽  
Knowledge Based System ◽  
Initial Design ◽  
Optimum Point ◽  
Knowledge Based

To obtain optimal design efficiently in the initial design stage of a ship, a hybrid system is developed by integrating the optimization algorithm and knowledge-based system. The hybrid system can manipulate numeric and symbolic data simultaneously. To increase search efficiency in a design space, the optimization algorithm (optimizer) is implemented by coupling a genetic algorithm (GA) and search method. The optimizer determines a candidate region around the optimum point by using the GA, then searches the optimum point by the search method concentrating in this region, thus reducing calculation time and increasing search efficiency. To generate input data for the optimizer, a rule-based system is developed. Some domain knowledge for ship optimization in the initial design stage is retrieved from a database of existing ship and design experts. The obtained knowledge is stored in the knowledge base. The optimizer incorporates a knowledge-based system with heuristic and analytic knowledge, thereby narrowing the feasible space of the design variables. Therefore, search speed and the capability of finding an optimum point will be increased in comparison with conventional approach. The developed system is applied principally to particulars of optimization of ships with multicriteria. Through application ship design, it shows that the hybrid system can be a useful tool for optimum design.

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