Integrated product development at design and manufacturing, company, national and international level based on computer based system and concurrent engineering

Author(s):  
M.S. Amalnik
Author(s):  
Ulf Sellgren ◽  
Cecilia Hakelius

Abstract Technology and engineering might be characterized as becoming more knowledge-intensive. A huge amount of data is used and produced in most product development projects. Increasing competition requires shorter reaction time to customer demands and a higher level of innovation. Concurrent Engineering (CE) is a strategic response to competition. It has proved to be a powerful approach to integrating engineering activities in product development. However, integration and parallel activities, that is the essence of CE, add complexity to the process. Consequently, information management is recognized as a major component in many CE models. Product Data Management (PDM) systems are a class of computer based systems that address the need to manage product related information that is mainly formal and computer interpretable. PDM systems are sometimes referred to as CE enablers. Results from a resent survey of PDM implementation projects in six Swedish industrial companies, with products ranging from telecommunications systems to trucks and medical equipment, indicate the importance of also utilizing the Concurrent Engineering (CE) approach in the process of implementing an enterprise-wide PDM solution.


Author(s):  
J. Schmitz ◽  
S. Desa

Abstract It is well-known that so-called Concurrent Engineering is a desirable alternative to the largely sequential methods which tend to dominate most product development methods. However, the proper implementation of a concurrent engineering method is still relatively rare. In order to facilitate the development of a reliable concurrent engineering product development method, we start with a careful definition of concurrent engineering and, after an extensive study of all of product development, we propose three criteria which ideal concurrent engineering must satisfy. However, for labor, time, and overall cost considerations, ideal concurrent engineering is infeasible. Instead, we propose a computer-based environment which, by being constructed in accordance with the three criteria, attempts to approach ideal concurrent engineering. The result is the Virtual Concurrent Engineering method and computer implementation environment. This product development method and computer-based implementation system provide the detailed, structured information and data needed to optimally balance the product with respect to the main product development parameters (e.g., manufacturing costs, assembly, reliability). This important information includes re-design suggestions to improve the existing design. The designer can directly apply these re-design suggestions for design optimization, or he can use the results as input into a more complex design optimization or design parameterization function of his own. To demonstrate Virtual Concurrent Engineering, we use it to refine earlier work done by the authors in the Design for Producibility of stamped products. We discuss, in some detail, the results of applying Design for Producibility to complex stampings, including process plans and product producibility computations.


2015 ◽  
Vol 14 (5) ◽  
pp. 5707-5718
Author(s):  
Morteza Sadegh Amalnik ◽  
M.H Khoshgoftarmanesh ◽  
M Mirzaei

The traditional design of product, the preceding constraints and limitations are considered sequentially. In order to reduce the product development cycle time and cost and increase quality and productivity, concurrent (simultaneous) design of product and process has been introduced. Electrochemical machining (ECM) is used to tackle exotic alloys of intricate shape and produce complex parts in hard metals with high surface quality and integrity. This paper addresses the concept of the knowledge base system (KBS) for optimization of product design and electrochemical machining process in computer integrated manufacturing (CIM) and computer based concurrent engineering environment. The KBS links with design and manufacturing data bases. The design specification is acquired through a feature based approach. The KBS links with material data base which holds attributes of more than 60 materials. It also links with tool data base which hold attributes of 7 tools material and also 3 type of electrolytes. KBS is also links with machine data base which hold attributes of different ECM machines. For each design feature, KBS provides information needed for design and manufacturing optimization. The KBS can be used as an advisory system for designers and manufacturing engineers. It can be used as a teaching program for designers and manufacturing engineers and new ECM operators in computer based concurrent engineering environment.


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