A categorization of functional couplings in manufacturing systems

2002 ◽  
Vol 216 (4) ◽  
pp. 623-626
Author(s):  
P Almström ◽  
P Märtensson
Keyword(s):  
Design Theory ◽  
Manufacturing Systems ◽  
Axiomatic Design ◽  
Functional Coupling ◽  
Functional Requirements ◽  
Diverse Range ◽  
Manufacturing Operations ◽  
Axiomatic Design Theory ◽  
Political Opinions ◽  
Selection Of

The axiomatic design theory as stated by Suh has proven useful when designing products, and this success has led to an increasing interest in applying the theory to manufacturing systems development. The theory states that functional couplings should be avoided in general. However, manufacturing systems are potentially coupled in many ways, the most obvious being that manufacturing operations usually are performed in a sequence. Functional coupling is defined as a dependence between functional requirements. The subject of couplings in manufacturing systems is not extensively explored or described in the literature, and specifically not in relation to the axiomatic design theory. Five different categories of couplings in manufacturing systems are described and exemplified in this paper. Couplings can be designed into the manufacturing system for a diverse range of reasons, e.g. selection of manufacturing processes or materials, but they may also be irrational, e.g. decisions based on political opinions.

Axiomatic Design Applied to Manufacturing Systems Design

1996 ◽  
Author(s):  
Johan Vallhagen
Keyword(s):  
Design Theory ◽  
Manufacturing Systems ◽  
Systems Design ◽  
Axiomatic Design ◽  
Original Model ◽  
Life Cycle Approach ◽  
Support Functions ◽  
Axiomatic Design Theory ◽  
Manufacturing Systems Design ◽  
Satisfactory Manner

Abstract In earlier work, the axiomatic design theory has been analyzed for applications on product design and the production processes that pertain to it, where parts manufacture and assembly take place in flexible and automatic manufacturing systems. The conclusion is that the original model cannot handle the manufacturing aspects in a satisfactory manner. This report proposes an expansion of the axiomatic design model, with a life-cycle approach as take-off. The expansion of the model consists of the introduction of a so-called Manufacturing World with different spaces, where various types of processes and support functions can be developed in agreement with the axiomatic principles. The spaces and their relationships have been defined along with explanations of work procedures. An explanatory example is given.

scholarly journals Axiomatic Design in Obtaining a Device for Ultrasonic Machining

2018 ◽  
Vol 223 ◽  
pp. 01021
Author(s):  
Oana Dodun ◽  
Ema Panaite ◽  
Petru Duşa ◽  
Gheorghe Nagît ◽  
Margareta Coteată ◽  
...  
Keyword(s):  
Design Theory ◽  
Axiomatic Design ◽  
Machining Process ◽  
Drilling Process ◽  
Relative Pressure ◽  
Ultrasonic Machining ◽  
Functional Requirements ◽  
Analytic Hierarchy ◽  
Ultrasonic Drilling ◽  
Axiomatic Design Theory

Ultrasonic abrasive cavitational machining is a nonconventional machining method applied to remove surfaces in workpieces made of brittle, hard, or non-conductive materials that cannot be efficiently machined by other classical or nonconventional machining methods. Among the factors that can affect the values of the parameters of technological interest for the ultrasonic machining process, the relative pressure between the ultrasonic tool and the workpiece surface to be machined could be considered. The main objective of the research presented in this paper was to analyze the possibilities of selecting the most convenient solution among many such available solutions to ensure the tool feed motion, when designing a device for achieving an ultrasonic drilling process. At present, this selection could be achieved by means of an optimal selection method. Taking into consideration some functional requirements of the device, the method of analytic hierarchy process and the axiomatic design theory were used to solve some problems met in the design process.

scholarly journals Incorporating Patent Analysis in Axiomatic Design for New Product Development

2019 ◽  
Vol 301 ◽  
pp. 00015
Author(s):  
Wenguang Lin ◽  
Renbin Xiao ◽  
Rongshen Lai ◽  
Xiaozhen Guo
Keyword(s):  
Product Development ◽  
New Product Development ◽  
Design Theory ◽  
Target Function ◽  
Axiomatic Design ◽  
New Product ◽  
Patent Analysis ◽  
Design Parameters ◽  
Functional Requirements ◽  
Axiomatic Design Theory

Axiomatic design theory is widely used in new product development by providing design solutions through mapping between functional requirements and design parameters. However, the theory does not provide a method to help designer obtain and select design parameters. To this end, this paper introduces patent analysis to overcome the deficiency. Firstly, functional requirements are transformed into patent search terms, and design parameters are obtained from patents. Secondly, morphological matrix is used to represent the relationships between target function and multiple design parameters. Thirdly, design parameters with higher patent frequency are chose and combined into a new scheme. Finally, the scheme is evaluated by the independent axiom of Axiomatic Design theory. The methodology is demonstrated and validated with a case study of spa shower.

scholarly journals Building Numerical Design Matrix and Managing Functional Couplings for Concept Improvement of The Existing Product

2019 ◽  
Vol 301 ◽  
pp. 00011
Author(s):  
Chu-Yi Wang ◽  
Ang Liu ◽  
Stephen Lu
Keyword(s):  
Design Theory ◽  
Design Concept ◽  
Design Parameters ◽  
Phase Method ◽  
Functional Coupling ◽  
Design Matrix ◽  
Concept Generation ◽  
Functional Requirements ◽  
Axiomatic Design Theory ◽  
Concept Improvement

Because parametric values are unknown during initial concept generation, the Axiomatic Design Theory uses the binary design matrix (DM) to represent the coupling relationship between functional requirements and design parameters. However, given an existing product, it would be possible to employ the numerical DM that has more detailed information than the binary DM to help improve the design concept. This paper proposed a two-phase method to create a numerical DM in phase I and manage the functional couplings in phase II for concept improvement of existing product. A decomposition-definition-levelling framework and the Puritan-Bennett’s 0-1-3-9 level rating are employed to evaluate the system impact of each functional coupling to create the numerical DM of an existing design concept. The Design Coupling Sequence (DCS) approach was extended to use the numerical DM to improve this design concept. Compared with other numerical matrices for product development and the structured approach by Su et al., our method is more generic and faster, providing useful details yet still able to maintain the dominance of the high-level couplings.

Aspects on Process Planning Issues in Axiomatic Design

1994 ◽  
Author(s):  
Johan Vallhagen
Keyword(s):  
Design Theory ◽  
Manufacturing Systems ◽  
Manufacturing System ◽  
Axiomatic Design ◽  
Original Method ◽  
Design Parameters ◽  
Complex Products ◽  
Additional Process ◽  
Axiomatic Design Theory ◽  
Complex Manufacturing Systems

Abstract This paper addresses some limitations of the axiomatic design theory (AD) when designing complex products and matching manufacturing systems. The conclusion is that, for complex manufacturing systems, this cannot be done in such a straightforward way as described in literature. The original method is best used for manufacturing of parts only, i.e. to find the appropriate process variables (PVs). In the case of complex manufacturing systems, a one-to-one mapping between physical domain and process domain is not possible since not all design parameters (DP) are components. Therefore, an additional process requirement domain (PR), proposed earlier, has been used. With it, the components are extracted from the DP hierarchy and mapped to different spaces in the manufacturing world. In these spaces, PRs and PVs are selected when designing the manufacturing system. An example is given to show the deficiencies and how to use the suggested modifications.

scholarly journals Exploring and Adapt! – Extending the Adapt! Method to Develop Reconfigurable Manufacturing Systems

2018 ◽  
Vol 223 ◽  
pp. 01006 ◽  
Author(s):  
Kate Kujawa ◽  
Jakob Weber ◽  
Erik Puik ◽  
Kristin Paetzold
Keyword(s):  
Product Design ◽  
Design Process ◽  
Design Theory ◽  
Manufacturing Systems ◽  
New Products ◽  
Axiomatic Design ◽  
Reconfigurable Manufacturing Systems ◽  
Reconfigurable Manufacturing ◽  
Axiomatic Design Theory ◽  
Exploration Phase

Automotive production is faced with the challenge of bringing new products to market faster, with decreasing turn-around times, meaning production must be continually changing to accommodate new products. This paper proposes an approach to decrease a product’s time-to-market, by increasing the efficiency of automotive assembly unit design. Providing designers with conceptual information about future vehicle models early in the product design process, could shift the design start forward and enable a more efficient transition process. Large automotive companies work on vehicle design and development for years before a product is ready for production. If during these earlier stages of product design, significant changes are identified and communicated to production designers, the manufacturing system design can get a jump start with an early exploration phase. A method exists, which uses the Axiomatic Design theory to develop Reconfigurable Manufacturing Systems through a modular breakdown. A similar method Adapt! employs Axiomatic Design and Scrum to develop changeable or adaptable production systems. This paper proposes to extend the Adapt! method to include an exploration phase, which through early communication, provides an overview of the required design process, and enables faster identification of the critical design challenges. A case study is performed by analysing a currently produced vehicle and its future electric version.

Analysis of Platen Die-Cutting Mechanism Based on the Axiomatic Design Theory

2013 ◽  
Vol 312 ◽  
pp. 796-799
Author(s):  
Xiang Dong Shi ◽  
Yan Li ◽  
Hao Dong Li
Keyword(s):  
Mechanism Design ◽  
Design Process ◽  
Basic Concept ◽  
Design Theory ◽  
Axiomatic Design ◽  
Scientific Basis ◽  
Functional Requirements ◽  
Cutting Mechanism ◽  
Decomposition Processes ◽  
Axiomatic Design Theory

In this paper, the basic theory of Axiomatic Design is introduced at first. Then the design process of the platen die-cutting mechanism is analyzed based on the basic concept and design process of axiomatic design. The functional requirements of the die-cutting mechanism, and the mapping and decomposition processes between designing parameters were presented. This provides the scientific basis for evaluating the rationality of the mechanism design, and plays a guiding role on design.

An Ergonomic Compatibility Perspective on the Selection of Advanced Manufacturing Technology

2016 ◽  
pp. 137-165
Author(s):  
Aidé Aracely Maldonado-Macías ◽  
Jorge Luis García-Alcaraz ◽  
Juan Luis Hernández-Arellano ◽  
Guillermo Cortes-Robles
Keyword(s):  
Design Theory ◽  
Axiomatic Design ◽  
Complex Problem ◽  
Manufacturing Technology ◽  
Cnc Machining ◽  
Advanced Manufacturing Technology ◽  
Advanced Manufacturing ◽  
Axiomatic Design Theory ◽  
Selection Of

Evaluation and Selection of Advanced Manufacturing Technology (AMT) is a complex problem involving multiple attributes difficult to consider in their entirety. The Axiomatic Design Theory have been used successfully to solve this problem. This chapter presents a literature review for applications of Axiomatic Design Theory in decision making and develops an Ergonomic Compatibility Evaluation Perspective case study for the selection of two vertical CNC machining centers. A new Hierarchical Fuzzy Axiomatic Design methodology was used as a decision aid for evaluation of technology in a more complete manner, while considering human factors and ergonomics aspects neglected in actual AMT evaluation and selection models. Methodology for the data analysis is described. A group of three experts was conformed for the case study. 26 articles were organized in a data matrix. The alternative which best meet established Design Ranges in terms of Ergonomic Compatibility was selected among two alternatives, according to the Ergonomic Incompatibility Content (EIC) in a fuzzy environment.

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