Product family-based assembly sequence design methodology pdf

A method to optimize assemblability of industrial product. A metric for evaluating design commonality in product. Complex assembly variant design in agile manufacturing. Product familybased assembly sequence design methodology. In one implementation, a method is provided that includes the steps of planning a sequence of processes running on a resource, where the planning takes into account setup times for the resource for a process depending at least on predecessor process information, storing the sequence of processes. They offer a number of different kinds of activities that a designer might use within an overall design process. However, as ecofriendly product design has been enforced by government regulation, it is needed to plan assembly and disassembly sequence at the same time in early product design stage. Design methods are procedures, techniques, aids, or tools for designing. Effective inventory and service management through product and process redesign.

Research on modularity and commonality has grown substantially over the past 15 years. The proposed mathematical model finds the optimal consensus assembly sequence tree for an existing product family based on the assembly sequence trees of individual product family members. It is used to automatically generate a 3dimensional computeraided design model of the product, estimate the price of the product, and generate assembly sequence information. Product family based assembly sequence design is a systematic methodology to take advantage of the commonalities among products, for which we develop concepts and algorithms in this paper.

Genichi taguchi, greatly improves engineering productivity. Modulebased mass customization catherine da cunha, bruno agard, and andrew kusiak, member, ieee abstractthe assembletoorder ato production strategy considers a tradeoff between the size of a product portfolio and the assembly lead time. Other design fmeas shall be attached to fully cascade the product a. Since 1980, analysis techniques have been made available which can guide designers towards products which are easy to manufacture and assemble. Managing design of assembly sequences for product lines. Feb 21, 20 subassembly identification for assembly sequence planning subassembly identification for assembly sequence planning wang, yong. Management operations design product development innovation. Contributed by the design theory and methodology committee for publication in the journal of mechanical design. A new approach for product design by integrating assembly. The challenge is to choose a sequence of assembly operations that will be easy for users to understand and follow. The integration of product design and operations could potentially enhance the ability of manufacturers to provide large variety in the product line while keeping their operations competitive. This paper presents a varietydriven clustering method for assembly system layout design. The design has evolved throughout the process and the current design is the result of intense engineering efforts and analysis. Based on the previous work on assembly sequence definition, the paper describes an initial effort towards an aod framework for product structure engineering using an asp information.

This research design builds on research done into use of technology and media in the home in the various other spaces using a qualitative research method1. A decision framework is introduced to reveal a holistic view of product family design and platform based product development, encompassing both frontend and backend issues. Master of science thesis in the international masters programme automotive engineering. Us7454260b2 systems and methods for production planning. Product family design and platform based product development has received much attention over the last decade. There is, naturally, a need to evaluate products, but few dfa methods provide the user with information on how to design the product to avoid assembly problems. The assembly sequence of a product variant of the family. A 4m approach for a comprehensive analysis and improvement of. Automated assembly device can assemble final assembly product from the parts 1. One of the most essential elements is the standard assembly. Product familybased assembly sequence design methodology core. The 4m approach is based on five steps that allow analyzing and improving both the product design and the assembly line.

A new methodology to analyze the functional and physical. A novel knowledge based mixedinteger programming mip model is presented for generating the assembly sequence of a given product based on available assembly sequence data of similar products. The large research community and economic importance of loblolly pine, pinus taeda l. A method to optimize assemblability of industrial product in early design phase. Dfa serves a critical role in reengineering existing products. In this approach, target dna molecules and cloning vector are generated by pcr with 610 bases of homology between the neighboring fragments. Krishnanproduct familybased assembly sequence design methodology. Dfa is the method of design of the product for ease of assembly. We expect that selecting an overhang sequence subset with minimal crosstalk can result in higher efficiency in the assembly process. Varietydriven assembly system layout design by design structure.

Product familybased assembly sequence design to advance the. The size and complexity of conifer genomes has, until now, prevented full genome sequencing and assembly. Very often the term research is used in an emotive fashion in order to impress and build con. May 04, 2006 read a methodology for facilitating reconfiguration in manufacturing. These areas require evaluation to ensure they meet appropriate quality standards such as total quality management tqm. Dfa design for assembly definition and purpose design for assembly is a method of analyzing components and subassemblies in order to. Krishnan professor and sheryl and harvey white endowed chair. Most automated assembly systems are designed to perform a fixed sequence of assembly steps on a specific product that is produced in very large quantities. Pdf a rule based assembly sequence generation method for. Technical categories with associated indicators and units for biobased product manufacturing category indicator unit production and operation throughput time time s innovation research with eco design and number of products with innovation eco design approach performance management quality number of productsbatch that meets quality. When it comes to electronics that dissipate power in the form of heat during normal operation, it is often necessary to manage this heat, to ensure the components dont exceed their maximum allowable temperatures. Us8467894b2 method and apparatus for managing product end. Product design for manufacture and assembly geoffrey boothroyd design is the first step in manufacturing, and it is where most of the important decisions are made that affect the final cost of a product.

Application to the structure based optimization of a phosphodiesterase 4 inhibitor. Krishnan, product familybased assembly sequence design methodology, iie. Design for six sigma dfss is the methodology associated with the design of a process, product, or service, which results in six sigma output that satisfies both. A 4m approach for a comprehensive analysis and improvement.

Optimization of the partsystem assembly dfa is a tool used to assist the design teams in the design of products that will transition to productions at a minimum cost, focusing on the number of parts, handling and ease of assembly. Dfm is the method of design for ease of manufacturing of the collection of parts that will form the product after assembly. These algorithms are usefil to handle complex practical situations, which unlike the pen family. Effective inventory and service management through product. Advances in assembly line methods are made regularly as. Design of smallsized libraries by combinatorial assembly of linkers and functional groups to a given scaffold. In a world of everincreasing electronics, our lives are continuously impacted by devices that incorporate some sort of heatgenerating circuitry. Pdf a method to optimize assemblability of industrial. Optimize the assembly process steps identify part relevance estimate the cost of assembly the purpose of dfa is to minimize assembly cost by optimizing the assembly process and reducing the number. In this paper, we show that careful design of the product assembly sequence helps to create generic subassemblies that reduce subassembly proliferation and the. It is a stepbystep sequence to design, develop and deliver a product or service. To obtain this level of efficiency, one must analyze all of these basic elements to develop the most effect production method.

Citeseerx document details isaac councill, lee giles, pradeep teregowda. In this paper we present a framework in which customer options and size parameters are gathered using the internet. Pdf product family design and platformbased product development has received much attention over the last decade. Pdf product family design and platformbased product. Knowledgebased model for constructing master assembly sequence. This article presents a methodology for selecting the product platform using information obtained from the individual optimization of the product variants. Dna assembly for nanopore data storage readout nature. Product family design knowledge representation, aggregation. A sensitivitybased commonality strategy for family products. At the plant level, an improved assembly sequence can lead to superior operational response to customer demands. Role of sequence analysis in concurrent engineering line balancing applies sequence analysis after the product is designed our goal is to push assembly sequence analysis to the beginning of the development process it can be an important lever in concept design it interacts with architecture and affects supply chain. This discussion of the methodology attempts to present some of the specific tools and experiences used to inform the design of the research and the development of an interpretation. Our assembly instruction design system consists of two parts. Disassembly liaison graphs inspired by word clouds.

The current project addresses the productivity improvement of a manual assembly line by making use of operations analysis in the framework of lean production. Pdf sustainability indicators for biobased product. It is clear from this description of the assembly sequence that many aspects of the design could be improved. After introducing the approach with a simple example we formalize the notion of generic. This approach of designing the assembly sequence to maximize the benefit from commonality of components and assembly operations, referred to as product. Analysis of sequential decision strategies, proceedings of asme design theory and methodology conference. Manufacturers guide to developing consumer product instructions. By proposition it is required to detail analyze assembly process, control of assembly process and also assembled product by design of assembly method 2. In contrast to other work on an aod, this paper presents a novel approach to bringing and integrating assembly information in early design stage, so that product. Production part approval process standard used to formally reduce risks prior to product or service release, in a team oriented manner using well established tools and techniques initially developed by aiag auto industry action group in 1993 with input from the big 3 ford, chrysler, and gm.

Mixed model assembly introduction mixed model production is the practice of assembling several distinct models of a product on the same assembly line without changeovers and then sequencing those models in a way that smoothes the demand for upstream components. Decoding the massive genome of loblolly pine using haploid. Thermal mechanical specifications and design guide introduction 1 introduction this document provides specifications and guidelines for the design of an intel xeon processor e7280048008800 v2 product family compatible thermal and mechanical solutions in 2 and 4socket intel xeon processor e7280048008800. Assembly line design and balancing designing and balancing the audi b9 mirror assembly line at smr automotive mirrors technology, mosonszolnok, hungary master of science thesis in the masters programme production engineering ranjith raja department of product and production development division of production systems.

Although several methods havebeen established to create plas there are not availablestudies comparing pla methods. As part of the knowledge management framework, a postgresql database schema has been formulated to serve as a central design repository of product design knowledge, capable of housing the instances of the nbom. A critical methodology for product t reengineering and new product development design for assembly dfa, a methodology which improves the manufacturability of assembled products, has gained significant attention in recent years. Product familybased assembly sequence design is a systematic methodology to take advantage of the commonalities among products, for which we develop concepts and algorithms in this paper. The supplier shall attach the design fmea of saleable part number and components. Product family based assembly sequence design methodology the product family based assembly sequence design algorithm along with its computer implementation presented below considers the entire product family in conjunction and identifies the maximally generic subassembly mgsa. Restructuring and balancing of the bus pre assembly line at man nutzfahrzeuge ag ankara factory. Assembly system design and operations for product variety. Smiles, a chemical language and information system. We develop a novel strategy to sequence the genome of loblolly pine that combines unique aspects of pine reproductive biology and genome assembly methodology. Shape grammars and their languagesa methodology for product design and product representation. This approach of designing the assembly sequence to maximize the benefit from commonality of components and assembly operations, referred to as product family based assembly sequence design, is the focus of this paper. Product positioning and introduction sequence decision making, european journal of operations.

They used actuatorsensor based clamping mechanisms while grinding thin walled components. The userfriendly dna engineering method allows combining multiple pcr fragment assembly, nucleotide sequence alteration and directional cloning. Pdf complexity planning for product design using triz. Product family design and platformbased product development. It entails achieving the succession in the implementation process and provides the benefits of. Available formats pdf please select a format to send. The group of 18 put forward the integrated design of product families and the corresponding assembly systems. 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. By consciously considering the noise factors environmental variation during the product s usage, manufacturing variation, and component deterioration and the cost of failure in the field the robust design method helps ensure customer satisfaction.

Product familybased assembly sequence design methodology core reader. Their design, manufacturing and role in product development, d. Then, variants are called on the basis of differences between the regions consensus sequence and the reference genome. Method and apparatus for managing product end of life. Different product families, however, may differ largely in terms of the number and. Comparison of software product line architecture design. Robust design method, also called the taguchi method, pioneered by dr. Designing effective stepbystep assembly instructions. To demonstrate and validate the usefulness of the proposed method for product family redesign, it is applied. This paper presents a variety driven clustering method for assembly system layout design. Five methods are knownto answer the needs of software product lines.

In this paper a new method for assembly plan generation, based on the concept of metaprod. Conventional procedures of design, such as drawing, can be regarded as design methods, but since the 1950s new procedures have been developed that are more usually grouped together under the name of design. Product line architectures plas have been undercontinuous attention in the software research communityduring the past few years. Product family based assembly sequence design methodology.

Product familybased assembly sequence design methodology, iie transactions, 30, 1998. A rule based assembly sequence generation method for product design article pdf available in concurrent engineering 153. Techniques known as design for assembly, dfa, have been used since the early eighties. A methodology is proposed that helps to improve the productivity of any production process. The proposed model is inspired by problems studied in biology and phylogenetics where a consensus species classification for a set of conflicting.

Assembly line methods were originally introduced to increase factory productivity and efficiency. Also it is needed to recognize and resolve automation process and the using of. The methodology consists of selecting a product or product. Product design for manufacture and assembly sciencedirect. While attempting to create common assembly processes, their method neglects the link between product and process families.

Searching 36 journals over more than the past 35 years, over 160 references are identified in the engineering. Manufacturing and assembly process design are decisive and expensive processes. Journal of medicinal chemistry 2005, 48 11, 38163822. Subassembly identification for assembly sequence planning. P roduct familybased assembly sequence design methodology, iie.