Nptel syllabus design for manufacture and assemblydfma. Differences and similarities between design for manufacturing and design for assembly describe how product design has a primary influence basic criteria for part minimization quantitative analysis of a designs efficiency critique product designs for ease of assembly the importance of involving production engineers. Aug, 2008 lecture series on design of machine elementsi by prof. Lean manufacturing is the systematic elimination of waste. B maiti, department of mechanical engineering,iit kharagpur. The data requi red for various functions are passed from. It covers a wide spectrum of manufacturing activities such as machining, sheet metal working, welding, fabricating, scheduling and assembly. Purpose statement to provide an overview of design for manufacturing and assembly dfma techniques, which are used to minimize product cost through design and process improvements.
In the context of product design, it is very important to appreciate the limitations of a design from manufacturing and assembly perspective and to produce high quality products at low cost. Lean the best way to avoid designedin waste is with a healthy dose of design for assembly, and one of the best tools for administering that is the design for manufacture and assembly dfma software from boothroyd dewhurst inc. Design for manufacture and assembly dfma is a design approach that focuses on ease of manufacture and efficiency of assembly. Design for easy and quantified assembly with suitable. In the book, the authors examined the manufacturing activities exemplified by the toyota production system. Design for manufacturing and assembly is widely used by product designers and engineers to design products with lesser number of parts which helps in ease of assembly and thereby reducing the. Lecture series on design of machine elementsi by prof. Design for manufacturing dfm refers to design activity that is based on minimizing the cost of production andor time to market for a product, while maintaining an appropriate level of quality. The heart of any design for manufacturing system is a group of design principles or guidelines that are. Search by nptel course id, course name, lecture title, coordinator. Decisions made during the early conceptual stages of design have a great effect on subsequent stages 3. In this paper, the authors start with discussing the traditional process, its pros and cons, how knowledge based engineering is.
For manufacturing any product the design gives the shape meeting its functionality, aesthetic appearance etc, for the product and manufacturing gives the. Design for manual assembly andor design for manufacture and assembly why is this important to engineers and why are they the last to learn of its benefits. This course will introduce methods that can provide guidance to design teams in simplifying product structure to reduce manufacturing and assembly costs. Introduction computer integrated manufacturing cim encompasses the entire range of product development and manufacturing activities with all t he functions being carried out with the help of dedicated software packages. Product design and manufacturing usb media storage type.
The principle of group technology is to divide the manufacturing facility into small groups or cells of machines. For manufacturing any product the design gives the shape meeting its functionality, aesthetic appearance etc, for the product and manufacturing gives the real shape for the product as per the. Nptel engineering design design for manufacture and. Dfma is typically done dfa first and then dfm second. History of dfma, steps for applying dfma during product design, advantages of applying dfma during product design, reasons for not implementing dfma, introduction to manufacturing process. Find materials for this course in the pages linked along the left. Lecture 3 fundamentals of manufacturing towards product development. Design for quality, manufacturing and assembly prof. The following seven phases can be identified in a variety of product design and development projects. But if we chase perfection, we can catch excellence. Application of computer aided design cad in knowledge based. Mechanical engineering design for manufacturing nptel. Boothroyd, design for manual assembly standard tables for estimating the necessary factors for plotting control charts gutowski et al, thermodynamic analysis of resources used in manufacturing processes 09. A flexible manufacturing system fms has four or more processing workstations connected mechanically by a common part handling system and electronically by a distributed computer system.
In this connection an attempt is made on to learn the press tool design, materials, manufacturing used for press tool and calculations involved in it. Manufacturing processes i nptel online videos, courses. Design for manufacture and assembly dfma analysis of burring tool assembly nilesh kailas more1. Nptel provides elearning through online web and video courses various streams. Today, the application of knowledge based engineering includes design cad, analysis fea, simulation cas, optimization, manufacturing, and support capp where cad is the foundation for the rest of the cycle. A primary strategy in dfm involves minimizing the number of parts in a product. In this paper will be presented systematization of methods for analysis manufacturability of product design, with accent on manufacturability of product design regarding suitability for manufacturing and assembly dfma design for manufacturing and assembly. This course will introduce methods that can provide guidance to design teams in simplifying product structure to reduce manufacturing and assembly costs, quantify improvements and how robust design concepts can be used for ensuring quality. Application of computer aided design cad in knowledge. Dfmdfa design for manufacturing assembly qualityone.
Design for quality, manufacturing and assembly usb media storage type. Design for manufacturing and assembly dfma siemens. Greater role for other groups while still in the engineering phase such as manufacturing since almost 75% of the product cost is determined in the engineering phase, it gives a tool to attack. Design for manufacture and assembly dfma designing buildings wiki share your construction industry knowledge. Why is this discipline the last to be adopted in design engineering.
Nptel syllabus design for manufacture and assembly dfma web course course outline unit 1. Design for quality, manufacturing and assembly nptel. Design for manufacturing and assembly methodology applied. Differences and similarities between design for manufacturing and design for assembly describe how product design has a primary influence basic criteria for part minimization quantitative analysis of a design s efficiency critique product designs for ease of assembly the importance of involving production engineers. Veer surendra sai university of technology burla, odisha, india department of production engineering lecture notes on computer integrated manufacturing cim course code. The concepts design for manufacturing, assembly, and environment, and analytical tools for development, costing and manufacturing would help the students and practitioners learn to conceptualize, design, and manufacture competitivelypriced quality products.
In our context, things include product design, process planning, fabrication, assembly, and production control. Dfma design for manufacturing and assembly examples. Lean manufacturing or lean production are reasonably new terms that can be traced to jim womack, daniel jones and daniel roos book, the machine that changed the world 1991. Design for manufacturing and assembly methodology applied to.
Lecture 1 introduction to product design and manufacturing lecture 2 introduction to product design and manufacturing continued. In this work, a real time design of a simple blanking press tool and manufacturing of a prototype is made along with analysis where the output is a circular piece having diameter of 20mm. Lecture notes product design and development sloan school. Dfma advantages quantitative method to assess design communication tool with other engineering disciplines and other departments sales, etc. The concepts design for manufacturing, assembly, and environment, and analytical tools for development, costing and manufacturing would help the students and practitioners learn to conceptualize, design, and manufacture. Design for manufacture and assembly dfma designing buildings. On the dependency of business commitment, proceedings of the 5th international conference on manufacturing research, 11. Design for manufacture and assembly dfma engineering design. Suspension system of an automobile separates the wheel and axle assembly of the automobile from its body. Lecture series on design of machine elements i by prof. Lecture notes design and manufacturing ii mechanical. Main function of the suspension system is to isolate the body of the vehicle from shocks and vibrations generated due to.
Dfma is an abbreviation for design for manufacturing and assembly. Guwahati department of designiit abinash kumar swain. Maiti, department of mechanical engineering,iit kharagpur. Design for quality, manufacturing and assembly course. Manufacturing changes manufacturing industry affect all facet of our daily life companies constantly seek ways to optimize process and decrease cost manufacturing changes 1990s quality was the driving force 2000s safety today environmental sustainability. Nptel syllabus design for manufacture and assemblydfma web course course outline unit 1. Lecture notes product design and development sloan. To introduce the concept and application for design for manufacturing and assembly to practicing designers. By simplifying the design of a product it is possible to manufacture and assemble it more efficiently, in the. Aug 18, 2008 lecture series on design of machine elements i by prof. Their philosophy is based on using manufacturing or assembly as a design constraint, thus taking downstream processes like manufacturing and assembly into full consideration during the early design phase of the product 2. Quality also means meeting design specifications of the product. Design for manufacturing and assembly is widely used by product designers and engineers to design products with lesser number of parts which helps in.
This system can be divided into three major sections. Design for manufacturing and assembly dfma is an engineering methodology that focuses on reducing timetomarket and total production costs by prioritizing both the ease of manufacture for the products parts and the simplified assembly of those parts into the final product all during the early design phases of the product lifecycle. Manufacturability of the parts has been checked with design for manufacture dfm wherever necessary. Manufacturing design and manufacturing concurrent engineering design for manufacturing, assembly, disassembly, service green design, sustainable manufacturing, product life cycle materials selection, process selection computer integrated manufacturing lean production, agile manufacturing.
Feb 27, 2015 purpose statement to provide an overview of design for manufacturing and assembly dfma techniques, which are used to minimize product cost through design and process improvements. Design for manufacture and assembly dfma designing. Outline manufacturing design and manufacturing concurrent engineering design for manufacturing, assembly, disassembly, service green design, sustainable manufacturing, product life cycle materials selection, process selection computer integrated manufacturing lean production, agile manufacturing quality control, total quality assurance. Dfma is used as the basis for concurrent engineering studies to provide guidance to the design team in simplifying the product structure, to reduce manufacturing and assembly costs, and to quantify improvements. It a software comprised of various principles or methods when used properly will improve the ability of design to be easily manufactured and assembled thereby decreasing the costs. Nocsurrogates and approximations in engineering design nocsustainability through green manufacturing systems an applied approach noctheory of production processes. This course presents an overview of the product design and development process, along with the manufacturing systems aspects. By simplifying the design of a product it is possible to manufacture and assemble it more efficiently, in the minimum time and at a lower cost.
The practice of applying dfma is to identify, quantify and eliminate waste or inefficiency in a product design. Dfm is the method of design for ease of manufacturing of the collection of parts that will form the product after assembly. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses, youtube iit videos nptel courses. Module 3 selection of manufacturing processes lecture 6 design for powder metallurgy instructional objectives by the end of this lecture, the student will learn the basic principles of powder metallurgy processes and the critical issues to be considered during design of parts to be manufactured using powder metallurgy processes. Overview of design for manufacturing and assembly dfma. Forecasting demand for new products pdf global manufacturing and costing. However, in a more general sense gt may be applied to all activities, including administrative functions.
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