Managing design of assembly sequences for product lines. They used actuatorsensor based clamping mechanisms while grinding thin walled components. In a world of everincreasing electronics, our lives are continuously impacted by devices that incorporate some sort of heatgenerating circuitry. Assembly line methods were originally introduced to increase factory productivity and efficiency. It is clear from this description of the assembly sequence that many aspects of the design could be improved. 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. Disassembly liaison graphs inspired by word clouds. Pdf sustainability indicators for biobased product. Dfa is the method of design of the product for ease of assembly. Manufacturers guide to developing consumer product instructions. Pdf complexity planning for product design using triz. The current project addresses the productivity improvement of a manual assembly line by making use of operations analysis in the framework of lean production. Very often the term research is used in an emotive fashion in order to impress and build con.
Product family design and platform based product development has received much attention over the last decade. Although several methods havebeen established to create plas there are not availablestudies comparing pla methods. Restructuring and balancing of the bus pre assembly line at man nutzfahrzeuge ag ankara factory. 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. 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. Product line architectures plas have been undercontinuous attention in the software research communityduring the past few years. Subassembly identification for assembly sequence planning. The size and complexity of conifer genomes has, until now, prevented full genome sequencing and assembly. A 4m approach for a comprehensive analysis and improvement of. Krishnanproduct familybased assembly sequence design methodology. Then, variants are called on the basis of differences between the regions consensus sequence and the reference genome.
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. 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. The group of 18 put forward the integrated design of product families and the corresponding assembly systems. Dfm is the method of design for ease of manufacturing of the collection of parts that will form the product after assembly. The large research community and economic importance of loblolly pine, pinus taeda l. Gupta s, krishnan v 1998 product family based assembly sequence design methodology. 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 design for manufacture and assembly sciencedirect.
In this paper a new method for assembly plan generation, based on the concept of metaprod. Comparison of software product line architecture design. Dna assembly for nanopore data storage readout nature. 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. Complex assembly variant design in agile manufacturing. Journal of medicinal chemistry 2005, 48 11, 38163822. A rule based assembly sequence generation method for product design article pdf available in concurrent engineering 153. 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. Contributed by the design theory and methodology committee for publication in the journal of mechanical design. This report serves to document the entire process from initial background research to final recommendations for improvement to the final design. Other design fmeas shall be attached to fully cascade the product a. 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.
Five methods are knownto answer the needs of software product lines. It is a stepbystep sequence to design, develop and deliver a product or service. Robust design method, also called the taguchi method, pioneered by dr. 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. Under the assumption that the product variety requires only mild design changes, a sharing penalty. The userfriendly dna engineering method allows combining multiple pcr fragment assembly, nucleotide sequence alteration and directional cloning. 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. 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. Krishnan professor and sheryl and harvey white endowed chair. A sensitivitybased commonality strategy for family products. 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. Our assembly instruction design system consists of two parts. Their design, manufacturing and role in product development, d.
Product familybased assembly sequence design methodology, iie transactions, 30, 1998. Application to the structure based optimization of a phosphodiesterase 4 inhibitor. The assembly sequence of a product variant of the family. 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. Techniques known as design for assembly, dfa, have been used since the early eighties. 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. Decoding the massive genome of loblolly pine using haploid. Pdf a rule based assembly sequence generation method for. May 04, 2006 read a methodology for facilitating reconfiguration in manufacturing.
This paper aims to propose a sequence structure design method by integrating both assembly and disassembly sequence. Available formats pdf please select a format to send. A traditional approach involves a series of consecutive stages in the project management process. Effective inventory and service management through product and process redesign. Most dfa methods are focused on product evaluation. To obtain this level of efficiency, one must analyze all of these basic elements to develop the most effect production method. In this paper we present a framework in which customer options and size parameters are gathered using the internet. Automated assembly device can assemble final assembly product from the parts 1. Us7454260b2 systems and methods for production planning. These algorithms are usefil to handle complex practical situations, which unlike the pen family.
Shape grammars and their languagesa methodology for product design and product representation. Product familybased assembly sequence design methodology core. 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. 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. The methodology consists of selecting a product or product. Product family based assembly sequence design methodology. 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. To demonstrate and validate the usefulness of the proposed method for product family redesign, it is applied. Since 1980, analysis techniques have been made available which can guide designers towards products which are easy to manufacture and assemble. Design for x georgia southern universityarmstrong campus.
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. 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. P roduct familybased assembly sequence design methodology, iie. Searching 36 journals over more than the past 35 years, over 160 references are identified in the engineering. Product positioning and introduction sequence decision making, european journal of operations.
Dfa serves a critical role in reengineering existing products. 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. Management operations design product development innovation. A mass customization information framework for integration of. Designing effective stepbystep assembly instructions. The 4m approach is based on five steps that allow analyzing and improving both the product design and the assembly line. A metric for evaluating design commonality in product.
Citeseerx document details isaac councill, lee giles, pradeep teregowda. Genichi taguchi, greatly improves engineering productivity. 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. Systems, methods, and computer program products are provided for planning production processes. 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. This paper presents a varietydriven clustering method for assembly system layout design. We expect that selecting an overhang sequence subset with minimal crosstalk can result in higher efficiency in the assembly process. The proposed model is inspired by problems studied in biology and phylogenetics where a consensus species classification for a set of conflicting. 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. Pdf product family design and platformbased product development has received much attention over the last decade. 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 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.
The challenge is to choose a sequence of assembly operations that will be easy for users to understand and follow. Research on modularity and commonality has grown substantially over the past 15 years. While attempting to create common assembly processes, their method neglects the link between product and process families. This paper presents a variety driven 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. By proposition it is required to detail analyze assembly process, control of assembly process and also assembled product by design of assembly method 2. Smiles, a chemical language and information system.
Product familybased assembly sequence design to advance the. A method to optimize assemblability of industrial product. 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. Different product families, however, may differ largely in terms of the number and. Assembly system design and operations for product variety. 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.
These areas require evaluation to ensure they meet appropriate quality standards such as total quality management tqm. Analysis of sequential decision strategies, proceedings of asme design theory and methodology conference. Krishnan, product familybased assembly sequence design methodology, iie. It entails achieving the succession in the implementation process and provides the benefits of. Method and apparatus for managing product end of life. Pdf a method to optimize assemblability of industrial. This approach of designing the assembly sequence to maximize the benefit from commonality of components and assembly operations, referred to as product familybased assembly sequence design, is the focus of this paper. Also it is needed to recognize and resolve automation process and the using of. A 4m approach for a comprehensive analysis and improvement. If you ask for evidence of the research process and method. Us8467894b2 method and apparatus for managing product end. Design of smallsized libraries by combinatorial assembly of linkers and functional groups to a given scaffold.
A new methodology to analyze the functional and physical. This article presents a methodology for selecting the product platform using information obtained from the individual optimization of the product variants. A new approach for product design by integrating assembly. 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. 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. Pdf product family design and platformbased product. We develop a novel strategy to sequence the genome of loblolly pine that combines unique aspects of pine reproductive biology and genome assembly methodology. The supplier shall attach the design fmea of saleable part number and components.
One of the most essential elements is the standard assembly. Dfa design for assembly definition and purpose design for assembly is a method of analyzing components and subassemblies in order to. 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. At the plant level, an improved assembly sequence can lead to superior operational response to customer demands.
Advances in assembly line methods are made regularly as. In this approach, target dna molecules and cloning vector are generated by pcr with 610 bases of homology between the neighboring fragments. 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. Manufacturing and assembly process design are decisive and expensive processes.
Varietydriven assembly system layout design by design structure. 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. Effective inventory and service management through product. Product family design knowledge representation, aggregation. Product familybased assembly sequence design methodology. A method to optimize assemblability of industrial product in early design phase. This approach of designing the assembly sequence to maximize the benefit from commonality of components and assembly operations, referred to as product. In this paper, we show that careful design of the product assembly sequence helps to create generic subassemblies that reduce subassembly proliferation and the. A methodology is proposed that helps to improve the productivity of any production process. Design methods are procedures, techniques, aids, or tools for designing. Knowledgebased model for constructing master assembly sequence.