Design for Manufacturing and Assembly (DfMA)

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Optimization Of Injector Gun Design Using Design For Manufacturing And Assembly (DFMA) At The Conceptual Design Stage

Optimization Of Injector Gun Design Using Design For Manufacturing And Assembly (DFMA) At The Conceptual Design Stage

This chapter overall discusses about design optimization through implementing Design for Manufacturing and Assembly (DFMA) at the conceptual design stage. In this part, the briefing of the background, problem statement, objectives and scopes of the study are discussed.

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Integration of design for manufacturing and assembly (DfMA) and theory of inventive problem solving (TRIZ) for design improvement

Integration of design for manufacturing and assembly (DfMA) and theory of inventive problem solving (TRIZ) for design improvement

By using the global patent database as the foundation for the method, TRIZ effectively strips away all of the boundaries which exist between different industry sectors. The generic problem solving framework thus allows engineers and scientists working in any one field to access the good practices of everyone working in not just their own but every other field of science and engineering. Meanwhile Design for Manufacture and Assembly (DFMA) uses a question and answer approach to help determine the most cost effective and efficient assembly method, manufacturing process and materials for a particular product or process. The goal of DFMA is to determine what a product should really cost to manufacture based upon the desired functions of the customer.
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Implementation Of Design For Manufacturing And Assembly (DFMA) Methodology To Analyze Antitheft Device System

Implementation Of Design For Manufacturing And Assembly (DFMA) Methodology To Analyze Antitheft Device System

Design for Manufacturing and Assembly (DFMA) is a design philosophy used by designers when a reduction in part counts, a reduction in assembly time, or a simplification of subassemblies is desired. It can be used in any environment regardless of how complex the part is or how technologically advanced this environment may be. DFMA encourages concurrent engineering during product design so that the product qualities reside with both designers and the other members of the developing team (D- ESPAT, 2007).
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Optimization Design Of Slicing Machine Using Design Of Manufacturing And Assembly (DFMA) Method

Optimization Design Of Slicing Machine Using Design Of Manufacturing And Assembly (DFMA) Method

Before the Second World War, Ford and Chrysler use the DFM philosophy in their design and manufacturing process of the weapons, tanks and other military products. It was in the beginning of the 1970’s, when Dr. Geoffrey Boothroyd and Dr. Peter Dewhurst, who founded the Boothroyd Dewhurst Inc. (BDI) in1982, they were the pioneers in this new technology. The “DFMA” in actual became their company trademark. They created and developed the DFMA concept which is used in developing the products of their company, the DFMA software system. Currently these programs are used to help the design in almost all the industrial fields including circuit boards, with manual assembly, with robotic assembly, and with machining. They also do a lot of work examining the economic justification of each design revision (Xie, 2005).
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Design And Analysis Of Optical Mouse Using Boothroyd Dewhurst DFMA Methodology

Design And Analysis Of Optical Mouse Using Boothroyd Dewhurst DFMA Methodology

A literature review is a body of text that aims to review the critical point of current knowledge on a particular topic. Base on literature review, it provides general up to date ideals, theoretical concept and applications related to this project. This literature review will go through those topics related to Design for Manufacturing and Assembly (DFMA), Design for Assembly (DFA) and Design for Manufacturing (DFM) where has become an important concurrent engineering imperative for cost effective product design. The basis of DFMA is a systematic procedure for analyzing product design based on the application of the application of quantifiable data. This chapter also explained the basic concept and method of Boothroyd Dewhurst DFMA. The method is described for effective integration of quantitative and qualitative materials, manufacturing and assembly process information during product design.
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Product Design Evaluation Of Lucas Hull DFMA Method

Product Design Evaluation Of Lucas Hull DFMA Method

Before the Design for Manufacturing and Assembly (DFMA) exists, the design engineer uses the traditional design method to develop the new product. A few problems occur and this problem is the factor to use DFMA method in design process especially Lucas Hull DFMA method as stated below:

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Highlights: The product development methodology aims to assist the planning and design of the product throughout its life cycle. Using selection criteria it is possible to choose a solution will be followed until the end of the development process and this process is known as optimization of product solutions. Design for Manufacturing and Assembly (DFMA) is an approach that allows selecting a product solution with better manufactur- ing and assembly performance. Computational modeling allows representing systems in virtual environment in order to reproduce its characteristics and to compare scenarios through simulation.
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Design and development of thermodynamics apparatus using design for manufacture and assembly (DFMA) methodology

Design and development of thermodynamics apparatus using design for manufacture and assembly (DFMA) methodology

Thermodynamics is an essential subject in Mechanical Engineering curriculum. The thermodynamics principles have been applied in many applications to fulfill human needs. Mechanical engineers use thermodynamics principles in their study to design a wide variety of energy system such as jet engines and rockets, refrigeration system, air conditioning system, chemical process and power plant. This would explain that thermodynamic was one of the critical areas which need to be well understood. However, the majority of students perceive thermodynamics as a difficult subject. By having the suitable experiment apparatus designed to demonstrate thermodynamics process and system have been learned, such an apparatus would enhance the teaching and learning of thermodynamics. Therefore, an apparatus for this purpose is necessary to be developed. The apparatus should be portable and mobilize which demonstration in both lecture and laboratory session is possible. A Boothroyd-Dewhurst Design for Manufacturing and Assembly (DFMA) Methodology had been applied to optimize the design apparatus. The application of Boothroyd-Dewhurst (DFMA) Methodology will simplify the design through minimizing the part component for ease of assembly and manufacture. In addition, this methodology also provides analysis for selection of manufacturing process and material for developed apparatus. Therefore, the overall development cost could be minimized. The aim of this project is to successful develop an apparatus which could demonstrate the 1st Law of Thermodynamics-closed system based on Boothroyd- Dewhurst DFMA Methodology.
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Product Design Improvement Using Design For Manufacture And Assembly (DFMA) Methodology

Product Design Improvement Using Design For Manufacture And Assembly (DFMA) Methodology

Normally, design engineers use Design for Manufacturing and Assembly (DFMA) as the method to improve their products. DFMA is used in engineering by providing guidance to the engineers to simplify the design structure and proces. Through the applied DFMA, the production cost of manufacturing and assembly can be studied to be reduced as well as improving the efficiency of the product. The DFMA can be divided into two separations which the first is Design for Assembly (DFA) and the second is Design for Manufacturing (DFM). The separation makes the engineering studied for both field can be done efficiently and in more detail. The DFA is the process of redesign part of product and also improving the assembly line. Meanwhile, the DFM is the process to facilitate the manufacturing process in order to reduce the cost and also improve the materials usage of the product.
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Optimization Of Conceptual Manual Wheelchair Design Using Integrated QFD And DFMA

Optimization Of Conceptual Manual Wheelchair Design Using Integrated QFD And DFMA

This chapter covers the description of Quality Function Deployment (QFD) and Design for Manufacturing and Assembly (DFMA). House of Quality (HOQ) method in QFD and Boothroyd method from Design for Assembly (DFA) also cover in this chapter. Additionally, this chapter discusses the conceptual design of manual wheelchair, the engineering design standard of wheelchair and previous study done to achieve the objective of this project.

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Redesign Of A  Product Using Boothroyd DFA Approach

Redesign Of A Product Using Boothroyd DFA Approach

Nowadays, design for manufacturing and assembly, DFMA is quite important according the current issue about the increasing of the price for consumer‟s good. Besides that, the highest price of the petrol and diesel at the market also give effect to consumer especially who have a lower income per month. If this problem still going on, maybe it will make hard for consumer to get the things that they require. For example, when they need to buy something, consequently will spend a lot of money to have it.

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The Study Of Comparative Analysis Of Boothroyd Dewhurst (BD) Design For Manufacture And Assembly (DFMA) Method

The Study Of Comparative Analysis Of Boothroyd Dewhurst (BD) Design For Manufacture And Assembly (DFMA) Method

Design for Manufacturing and Assembly (DFMA) is a design philosophy used by engineer and designer when a reduction in a part count, a reduction in assembly time or simplification of the design is needed. Many of international companies likes Dell, Motorola, Texas Instrument, Brown & Sharpe and Ford Motor have successfully reducing their manufacturing costs through eliminating the unwanted parts inside the product thus lets their products be more competitive in the market

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Design And Analysis Of Optical Mouse Using Boothroyd Dewhurst DFMA Methodology

Design And Analysis Of Optical Mouse Using Boothroyd Dewhurst DFMA Methodology

A literature review is a body of text that aims to review the critical point of current knowledge on a particular topic. Base on literature review, it provides general up to date ideals, theoretical concept and applications related to this project. This literature review will go through those topics related to Design for Manufacturing and Assembly (DFMA), Design for Assembly (DFA) and Design for Manufacturing (DFM) where has become an important concurrent engineering imperative for cost effective product design. The basis of DFMA is a systematic procedure for analyzing product design based on the application of the application of quantifiable data. This chapter also explained the basic concept and method of Boothroyd Dewhurst DFMA. The method is described for effective integration of quantitative and qualitative materials, manufacturing and assembly process information during product design.
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Comparison For Front Door Passenger Car With Local And Import Car Using Design For Manufacture And Assembly (DFMA) Method

Comparison For Front Door Passenger Car With Local And Import Car Using Design For Manufacture And Assembly (DFMA) Method

For over 500 companies worldwide, DFMA has become a vital design tool in their effort to compete in domestic and world markets. The data collected from published literature on over 50 case studies conducted by McDonnell Douglas at its St. Louis plant, outlines the power of the DFMA methodology. Some of the results are: reduction in manufacturing cycle time, part count reduction, part cost reduction; time-to-market improvements; quality and reliability improvements; reduction in assembly time. According to Geoffrey Boothroyd, Professor of Industrial and Manufacturing at the University of Rhode Island, the practices now known as Design for Assembly (DFA), and Design for Manufacture (DFM) had their start in the late 1970's at the University of Massachusetts. Of all the issues to consider, industry was most interested in Design for Assembly.
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Design Improvement Using Design For Manufacture & Assembly (DFMA) Approach

Design Improvement Using Design For Manufacture & Assembly (DFMA) Approach

Before the manufacturing and assembly process, the PDS (Product Design Specification) occurs which change the requirements of the customs into engineering specifications. After that, the design engineers perform the design job according to this information. This is a kind of process to change the engineering specifications into the real design and meanwhile, all the requirements should be satisfied. The Function analysis in Lucas DFA theory is to separates all the parts of the product into the essential parts and the non essential parts that employs very similar adjustment standard used by DFA.
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Use DFMA Methodology To Analyze On Car Wiper System

Use DFMA Methodology To Analyze On Car Wiper System

By year end 1970, this problem realized by a person whose named Geoffrey Boothroyd in University of Massachusetts. With the case study which is done by Geoffrey Boothroyd has made it with one method whose can solve the problem with producing his Design for Assembly and Design for Manufacture (DFA and DFM). Design for Assembly (DFA) is a method or system to facilitate a deep product installation. This matter, emphasize with some procedure that need followed and am being cared deep assembly method. It can be reduce cost bear by the company. Apart from that, can reduce part unconnected sense in the products can be chased away. With that system, installation time could be reduced hereby get increase productivity quoted company. Whereas Design for Manufacture (DFM) is a system or method that concerned to the components something easy of use in the products process and cost. Process driving at is deep machine utilization make stated product could be reduced. Hereby, designer necessary drop heavy process that have and the process that would face. Each part necessary have the process or machine that there on the company because it will reduce manufacturing cost. Through DFM and DFA, wall approach get be torn and are eliminated in a sector. Through to the DFM and DFA, to will start of something product will happen a discussion through the chief of each department. They will jointly discuss deep tackle will happen and can produce one product with good. Hence, the process dialogue is this in that process paramount is very importance. Dialogue is important to encouraged between designs and manufacturing engineers that will giving the team an attitude necessary to concurrent engineering.
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Virtual bloXing - assembly rapid prototyping for near net shapes

Virtual bloXing - assembly rapid prototyping for near net shapes

Immersive VR is an attractive option since it offers the user a sense of being immersed in the data where objects have a sense of ‘presence’ [18] and allows them to interface with the data at full scale if required. A design, after all, begins with an image or idea and the concept is disseminated via hand gestures, diagrams and descriptive speech. Depending on the industry, it is almost certain that pre-production prototypes are required, either as virtual or physical artefacts. These prototypes can be near net shapes. Cost is always a factor and whilst a physical prototype may ultimately be needed, its virtual counterpart is studied to improve product design, quality and performance, assembly and other issues. This reduces manufacturing risks of prototypes early in the product development cycle, and consequently reduces the number of costly design-build-test cycles [19].
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Assembly Line Balancing And Workstation Design For A Manufacturing Industry

Assembly Line Balancing And Workstation Design For A Manufacturing Industry

Abstract: Assembly line balancing is an essential engineering task for effective production and requires a larger amount of information that is related to the product such as processing method, processing time, precedence on which the work is carried out and flow structure of the work. Two line balancing methods were studied and used to balance the assembly line. The assembly line processing layouts were developed independently based on the above two methods. The best layout was found to be based on the Largest Candidate Rule (LCR), which allows each task to be completed in a single workstation. Traditional batch production was converted to a single piece flow to solve the issues regarding material handling, WIP inventory, cycle time, unbalanced work station, and queues. The above problems were identified using value stream mapping and Pareto chart. Takt time has been reduced from 272 seconds to 115 seconds and Productivity time has been reduced from 14 hours per day to 12 hours per day.
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Design Improvement On An MPOC Using DFMA

Design Improvement On An MPOC Using DFMA

with same product (multi ink mechanical pen) to make sure which method provide quick results, effectives and easy to use. This step done to determines which methodology will be used in the analysis process. After that, analyzed the assembly current parts design product based on the DFA terminology. The tools that used is Lucas DFA software (TeamSET V3.1) as the design for assembly analysis method and Autodesk Inventor 2009 software for designing the development new product.

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Design Improvement Of A Household Appliance Using DFMA

Design Improvement Of A Household Appliance Using DFMA

1 Four basic product development phases 10 2.2 Six major component of HOQ matrix 15 2.3 Example of affinity diagram applied to statements describing 16 company strategy 2.4 House of Qual[r]

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