This document summarizes the application of Design for Manufacturing and Assembly (DFMA) methodology to reduce costs in the steel furniture industry. It presents two case studies where DFMA was applied: a folding chair and bunk bed. For the folding chair, the redesign reduced parts from 9 to 3, lowering costs from Rs. 675 to Rs. 607 per unit. For the bunk bed, parts were reduced from 29 to 9 and total costs lowered from Rs. 4530 to Rs. 3630. DFMA principles like reducing parts, optimizing for ease of assembly and manufacture, and material selection can significantly lower product costs when applied early in the design process.
This project aims to redesign a baby stroller to reduce its assembly time and costs by applying the Design for Manufacturing and Assembly (DFMA) methodology. Specifically, the project seeks to reduce the stroller's part count, assembly time, and cost while improving its manufacturability. The original stroller's design efficiency is 14%. After applying DFA and DFM tools to simplify the design, combine parts, and select optimal materials and processes, the redesign achieves an 18% design efficiency and reduces assembly time from 1345 seconds to 883 seconds per stroller. The results demonstrate that DFMA improves the design's efficiency, time, and cost.
1) Design for X (DFX) principles aim to reduce errors and improve quality and cost efficiency of medical products by considering factors like manufacturing, assembly, maintenance, and end-of-life processing from the early design stages.
2) Applying DFX techniques like design for manufacturing and assembly (DFMA) and design for production can significantly reduce costs by catching issues early rather than requiring expensive redesigns later.
3) Other DFX aspects to consider include design for use and ergonomics to ensure safe and intuitive use, as well as design for end-of-life processing to allow for proper disposal or recycling of medical devices.
Design and Engineering Module 3: Prototype to ProductNaseel Ibnu Azeez
As per KTU Syllabus Design and Engineering
Prototyping- rapid prototyping; testing and evaluation of design; Design modifications; Freezing the design; Cost analysis. Engineering the design – From prototype to product.
Planning; Scheduling; Supply chains; inventory; handling; manufacturing/construction operations; storage; packaging; shipping; marketing; feed-back on design.
The document discusses strategies for optimizing the cost of printed circuit board (PCB) design through design for manufacturing (DFM) and design for cost (DFC) analysis. It identifies three main areas of focus: 1) material selection and optimization, 2) analysis of construction type and panelization, and 3) process parameter selection to optimize features. The document provides examples of analyzing factors like material selection, stack-up construction, number of functions per board, and panel utilization that impact the overall cost. The goal is to refine the design through iterative analysis of these areas to find the best cost vs. performance tradeoff.
- Systematic DFMA (Design for Manufacturing and Assembly) deployment is proposed as a back-to-basics approach to reduce costs and increase profits in manufacturing through design changes.
- Key aspects of a systematic DFMA deployment include establishing organizational support and accountability, selecting high-impact projects, allocating resources, executing projects through 5 milestones, and tracking savings.
- When done systematically and considering organizational factors, DFMA can yield part count reductions of 20-50%, labor time reductions of 20-60%, and cost savings of 20-50% across industries.
This document discusses design for X (DFX), which refers to designing products to meet a wide range of criteria beyond just functionality and cost. It covers key aspects of DFX including design for manufacturability (DFM), design for assembly (DFA), and design for reliability. The document provides guidelines for DFM and DFA such as reducing part count, designing for modularity, using standard components, and designing for ease of handling and assembly. It also discusses error-proofing techniques like poka-yoke and snap-fit joints that can improve the manufacturing and assembly process. Overall, the document outlines how considering factors like quality, safety, manufacturing, and life cycle from the early design stages can help optimize a product
DISCUS DFM focuses on characteristic management at an earlier stage in the product lifecycle when a manufacturing engineer is analyzing the detailed design of the part. In fact, by helping to define the applicable specs and annotations to include on the design, DISCUS DFM can actually assist with the definition of the Technical Data Package (TDP).
DISCUS DFM picks up where today’s leading CAD tools leave off by empowering the product team to consider the key considerations for manufacturing the part. An overview of the flow:
You start DISCUS by opening the native 3D CAD model in the model/drawing panel.
DISCUS will automatically review the model and its associated PMI and add the balloons to the model and the rows in the Bill of Characteristics.
You select the appropriate part family and likely list of manufacturing processes to consider for fabricating the part.
At this point, DISCUS DFM enables you to evaluate the part DFM by applying rules associated with the part’s features and characteristics versus the likely manufacturing processes.
The evaluation of the part against the integrated manufacturing knowledgebase results in a list of pertinent DFM constraints, recommended annotations/PMI for the part, and more.
When you're completed the analysis of the model, you can export the DFM data for review with the DFM engineer or the entire Integrated Product Team.
With DISCUS DFM, you consistently and correctly add the vital details to the design, giving you the ability to manufacture the new part right the first time. DISCUS DFM is the tool to improve the quality and productivity of your engineers.
Design and Engineering-Module 6:Modular Design, Design Optimization, Internet...Naseel Ibnu Azeez
Modular design; Design optimization; Intelligent and
autonomous products; User interfaces; communication
between products; autonomous products; internet of
things; human psychology and the advanced products.
Design as a marketing tool; Intellectual Property rights –
Trade secret; patent; copyright; trademarks; product
liability.
This project aims to redesign a baby stroller to reduce its assembly time and costs by applying the Design for Manufacturing and Assembly (DFMA) methodology. Specifically, the project seeks to reduce the stroller's part count, assembly time, and cost while improving its manufacturability. The original stroller's design efficiency is 14%. After applying DFA and DFM tools to simplify the design, combine parts, and select optimal materials and processes, the redesign achieves an 18% design efficiency and reduces assembly time from 1345 seconds to 883 seconds per stroller. The results demonstrate that DFMA improves the design's efficiency, time, and cost.
1) Design for X (DFX) principles aim to reduce errors and improve quality and cost efficiency of medical products by considering factors like manufacturing, assembly, maintenance, and end-of-life processing from the early design stages.
2) Applying DFX techniques like design for manufacturing and assembly (DFMA) and design for production can significantly reduce costs by catching issues early rather than requiring expensive redesigns later.
3) Other DFX aspects to consider include design for use and ergonomics to ensure safe and intuitive use, as well as design for end-of-life processing to allow for proper disposal or recycling of medical devices.
Design and Engineering Module 3: Prototype to ProductNaseel Ibnu Azeez
As per KTU Syllabus Design and Engineering
Prototyping- rapid prototyping; testing and evaluation of design; Design modifications; Freezing the design; Cost analysis. Engineering the design – From prototype to product.
Planning; Scheduling; Supply chains; inventory; handling; manufacturing/construction operations; storage; packaging; shipping; marketing; feed-back on design.
The document discusses strategies for optimizing the cost of printed circuit board (PCB) design through design for manufacturing (DFM) and design for cost (DFC) analysis. It identifies three main areas of focus: 1) material selection and optimization, 2) analysis of construction type and panelization, and 3) process parameter selection to optimize features. The document provides examples of analyzing factors like material selection, stack-up construction, number of functions per board, and panel utilization that impact the overall cost. The goal is to refine the design through iterative analysis of these areas to find the best cost vs. performance tradeoff.
- Systematic DFMA (Design for Manufacturing and Assembly) deployment is proposed as a back-to-basics approach to reduce costs and increase profits in manufacturing through design changes.
- Key aspects of a systematic DFMA deployment include establishing organizational support and accountability, selecting high-impact projects, allocating resources, executing projects through 5 milestones, and tracking savings.
- When done systematically and considering organizational factors, DFMA can yield part count reductions of 20-50%, labor time reductions of 20-60%, and cost savings of 20-50% across industries.
This document discusses design for X (DFX), which refers to designing products to meet a wide range of criteria beyond just functionality and cost. It covers key aspects of DFX including design for manufacturability (DFM), design for assembly (DFA), and design for reliability. The document provides guidelines for DFM and DFA such as reducing part count, designing for modularity, using standard components, and designing for ease of handling and assembly. It also discusses error-proofing techniques like poka-yoke and snap-fit joints that can improve the manufacturing and assembly process. Overall, the document outlines how considering factors like quality, safety, manufacturing, and life cycle from the early design stages can help optimize a product
DISCUS DFM focuses on characteristic management at an earlier stage in the product lifecycle when a manufacturing engineer is analyzing the detailed design of the part. In fact, by helping to define the applicable specs and annotations to include on the design, DISCUS DFM can actually assist with the definition of the Technical Data Package (TDP).
DISCUS DFM picks up where today’s leading CAD tools leave off by empowering the product team to consider the key considerations for manufacturing the part. An overview of the flow:
You start DISCUS by opening the native 3D CAD model in the model/drawing panel.
DISCUS will automatically review the model and its associated PMI and add the balloons to the model and the rows in the Bill of Characteristics.
You select the appropriate part family and likely list of manufacturing processes to consider for fabricating the part.
At this point, DISCUS DFM enables you to evaluate the part DFM by applying rules associated with the part’s features and characteristics versus the likely manufacturing processes.
The evaluation of the part against the integrated manufacturing knowledgebase results in a list of pertinent DFM constraints, recommended annotations/PMI for the part, and more.
When you're completed the analysis of the model, you can export the DFM data for review with the DFM engineer or the entire Integrated Product Team.
With DISCUS DFM, you consistently and correctly add the vital details to the design, giving you the ability to manufacture the new part right the first time. DISCUS DFM is the tool to improve the quality and productivity of your engineers.
Design and Engineering-Module 6:Modular Design, Design Optimization, Internet...Naseel Ibnu Azeez
Modular design; Design optimization; Intelligent and
autonomous products; User interfaces; communication
between products; autonomous products; internet of
things; human psychology and the advanced products.
Design as a marketing tool; Intellectual Property rights –
Trade secret; patent; copyright; trademarks; product
liability.
DFM is a principle that aims to improve efficiency by minimizing the number of parts needed for assembly. It differs from traditional sequential project approaches by integrating manufacturing activities earlier. This reduces time to market and facilitates coordination across departments. DFM tools help evaluate design options to optimize for manufacturability, costs, quality and other factors. While tools have limitations, DFM provides advantages like reducing development time and costs when applied throughout the design process.
The document provides a summary of a report analyzing the design for manufacturing and assembly (DFMA) features of an HP Deskjet printer. Key DFMA guidelines considered include minimizing parts, using standard parts, facilitating part handling, and encouraging modular assembly. The report examines the printer's design for automation and assembly, use of plastics, fastening methods, and sheet metal components. Figures are included to illustrate how the printer's design incorporates various DFMA principles such as pyramidal assembly, symmetry, and avoiding part jamming.
Design For Manufacturing & Assembly (DFMA) with Case Study -Diesel Engine Cos...Aditya Deshpande
Describes DFMA with its brief history, steps, advantages and disadvantages
This also gives its application through case study of COST REDUCTION OF A DIESEL ENGINE
Design for manufacturing ppt anas lahrichiAnas Lahrichi
This document discusses design for manufacturing (DfM). It defines DfM as designing products for ease of manufacturing to lower costs. The key principles of DfM are to consider the manufacturing process, product design, materials, operating environment, and testing. Applying DfM results in benefits like reduced costs, lead times, and improved quality. Examples where DfM is used include printed circuit boards, integrated circuits, and CNC machining.
A case study on concurrent engineering in the development of automotive components using DFMA/DFX approach.
DFMA- DESIGN FOR MANUFACTURING AND ASSEMBLY.
“Design for manufacture” means the design for ease of manufacture for the collection of parts that will form the product after assembly.
“Design for assembly” means the design of the product for ease of assembly.
The document discusses various design for manufacturing and assembly (DFMA) principles including: design for machining (standardization, material choice, part size/shape), design for economy (reducing lifecycle costs), design for clampability (ease of clamping parts), design for accessibility (ease of accessing parts), and design for assembly (minimizing parts, using self-locating/fastening features, modular design). It provides guidelines and examples for each principle to facilitate part and product design for efficient manufacturing and assembly.
This report is a research on how to use DFM (Design For Manufacturing) engineering method to reduce the cost and time of manufacturing. Additionally it is describing (how to choose/which is the best) production(manufacturing) technology.
1) The document describes a practical methodology for designing, developing, and validating mufflers using both computational and experimental methods. It involves benchmarking existing muffler designs, calculating target frequencies, determining muffler volume, conceptualizing internal configurations, conducting virtual simulations, manufacturing prototypes, and experimentally testing prototypes.
2) Key steps include calculating cylinder firing rates and engine firing frequencies to determine target attenuation frequencies, conceptualizing muffler internal configurations using perforated tubes and other elements, virtually simulating muffler transmission loss and back pressure, manufacturing low-cost prototypes, and experimentally testing prototypes using two-source transmission loss methods.
3) The goal is to shorten the product development cycle time by leveraging both computational acoustic tools and practical testing
The document summarizes the design for manufacturing and assembly of a folding chair. It discusses the old design of the chair which had many parts and complex manufacturing processes. The new design concept aims to reduce the number of parts to just three frames and a seat, all made from the same ABS material, which can be easily snap-fitted together. This simplifies manufacturing and assembly while reducing costs. DFMA and DFA principles and software are used to analyze the old design and develop the new concept chair.
The document discusses engineering design and creativity. It begins by defining engineering design as a process of devising systems to meet needs, applying science and optimizing resources. It emphasizes that design involves establishing objectives, synthesis, analysis and evaluation. The document then discusses differentiating science, technology and engineering, with science concerning natural phenomena, technology modifying nature, and engineering applying technology for human purposes. It provides examples to illustrate the relationships between science, technology and engineering. The document also discusses characteristics of design such as objectives, constraints, functions and form. It describes using objective trees to clarify and organize design goals and subgoals. Finally, it discusses initiating creative designs and improving creativity, noting creativity involves intuition and sensing incomplete ideas that are later clarified
The document discusses various Design for X (DFX) methodologies that can be implemented in product design to optimize aspects like manufacturing, procurement, supply chain management, testability, flexibility, portability, reusability, repairability, regulatory compliance, reliability, safety, quality, cost, and assembly. Key DFX approaches covered include designing for deployment, developing thorough product design specifications and engineering drawings, considering multiple suppliers, adding testability features, making the design scalable and modular, enabling reuse of components, easing repairs, meeting regulations, performing reliability tests, ensuring safety, using quality tools and processes, reducing costs, and simplifying 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.
DESIGN FOR MANUFACTURING AND ASSEMBLY.A really good insight of DFA and DFM. Also includes a very precise and appealing caste study on aimplemention of DFMA on a motor drive assembly.
The document discusses design for manufacturing and assembly (DFMA). It covers the fundamentals of DFMA, including design for manufacture, design for assembly, and differences between the two. It also provides examples of applying DFMA principles and guidelines to redesign a motor drive assembly to reduce the number of parts from 19 to 4. Reasons for not implementing DFMA are listed, such as lack of time, low volume production, and refusal to use DFMA tools. Advantages of applying DFMA during design include reduced cost, time to market, and improved quality.
Design for Manufacturing and Assembly (DFMA) is a methodology used to minimize product cost through design and process improvements. DFMA integrates product design and process planning to design products that are easily and economically manufactured. The goal of DFMA is to reduce material, overhead, and labor costs, shorten product development times, and utilize standardization to reduce costs. Key principles of DFMA include reducing the total number of parts, developing modular designs, using standard components, designing parts for multi-functionality and multi-use, and minimizing assembly directions.
The document introduces design for manufacture and assembly (DFMA) and discusses its benefits. It describes how applying DFMA principles during World War II enabled increased production of aircraft. DFMA aims to integrate design and manufacturing considerations early in the design process. Tools like the Boothroyd-Dewhurst method help evaluate designs and identify improvements to reduce costs and assembly time. The document provides several examples showing how DFMA led to significant reductions in the number of parts, assembly time, costs and defects for different products.
This document describes the development of an intelligent system to incorporate manufacturing constraints into the design process. The system analyzes design features from a CAD drawing and relates them to machining features. It then determines which manufacturing processes can produce those features and whether any design for manufacturing rules have been violated. The system considers production type, materials, tolerances, surface finish, feature characteristics, and accessibility. Currently, the system focuses on classifying and analyzing hole features, such as through holes, blind holes, counterbored holes, etc. It determines the appropriate machining processes based on criteria like whether the hole has a rotational axis. The goal is to help designers create designs that are easier to manufacture.
DFMA -Design For Manufacturing and AssemblySunith Guraddi
The document discusses applications of design for manufacture and assembly (DFMA) principles. It provides examples of how DFMA has been applied to improve products designed for developing world contexts. One example is a redesigned pineapple juicer that had fewer parts, lower production costs, and was easier to manufacture due to applying modified DFMA principles. Another example discusses reducing the part count and assembly time of a stapler through DFMA analysis. The document also outlines DFMA methodologies and principles that were developed to help designers lower costs and improve producibility, such as reducing part count, standardizing materials, and designing for automated production when feasible.
This document discusses concepts related to product design for manufacturing and assembly (DFMA). It defines DFMA as the combination of design for manufacturing (DFM) and design for assembly (DFA) to efficiently manufacture and easily assemble products with minimum cost. The document outlines several key principles of DFMA, including reducing the number of parts, designing for ease of fabrication and manufacturing, utilizing common parts and materials, and mistake-proofing designs. The overall goal of DFMA is to integrate product design with manufacturing processes to lower costs and shorten development time.
Manufacturing Process Simulation Based Geometrical Design for Complicated PartsLiu PeiLing
More than ever, it is critical that products are designed and manufactured right the first time. Design for Manufacturing (DFM) methodology has been recognized as one of the most effective ways to short product lifecycle time and reduce manufacturing cost. The main function of DFM in the detailed design stage is analyzing the manufacturability of the part. Various existing manufacturability evaluation methods have their limitations. In this paper, a new approach to DFM for the complicated parts is proposed. Instead of checking the manufacturability following the design, the in-process model resulting from the manufacturing process simulation is used to generate process dependent geometry surfaces at the design stage. The definition of the manufacturing process dependent geometry is given, and the methodology for creation of in-process model is presented in details.
This document summarizes a technical paper about design for manufacture (DFM) and design for assembly (DFA) tools. It discusses how DFM and DFA principles were developed to improve manufacturability and reduce costs. Software tools that integrate DFM and DFA analysis are presented, including the Boothroyd-Dewhurst software. The paper concludes by examining decision models for selecting DFM/DFA software based on required functions, supported processes, interfaces, and operating systems.
Facts on DFMA, Necessary for Next generation Designers to appreciate Integrate Design, Manufacturing and Assembly .
Collaborative Cross functional Team approach will bring Innovative and Low cost Quality Products into LIFE
DFM is a principle that aims to improve efficiency by minimizing the number of parts needed for assembly. It differs from traditional sequential project approaches by integrating manufacturing activities earlier. This reduces time to market and facilitates coordination across departments. DFM tools help evaluate design options to optimize for manufacturability, costs, quality and other factors. While tools have limitations, DFM provides advantages like reducing development time and costs when applied throughout the design process.
The document provides a summary of a report analyzing the design for manufacturing and assembly (DFMA) features of an HP Deskjet printer. Key DFMA guidelines considered include minimizing parts, using standard parts, facilitating part handling, and encouraging modular assembly. The report examines the printer's design for automation and assembly, use of plastics, fastening methods, and sheet metal components. Figures are included to illustrate how the printer's design incorporates various DFMA principles such as pyramidal assembly, symmetry, and avoiding part jamming.
Design For Manufacturing & Assembly (DFMA) with Case Study -Diesel Engine Cos...Aditya Deshpande
Describes DFMA with its brief history, steps, advantages and disadvantages
This also gives its application through case study of COST REDUCTION OF A DIESEL ENGINE
Design for manufacturing ppt anas lahrichiAnas Lahrichi
This document discusses design for manufacturing (DfM). It defines DfM as designing products for ease of manufacturing to lower costs. The key principles of DfM are to consider the manufacturing process, product design, materials, operating environment, and testing. Applying DfM results in benefits like reduced costs, lead times, and improved quality. Examples where DfM is used include printed circuit boards, integrated circuits, and CNC machining.
A case study on concurrent engineering in the development of automotive components using DFMA/DFX approach.
DFMA- DESIGN FOR MANUFACTURING AND ASSEMBLY.
“Design for manufacture” means the design for ease of manufacture for the collection of parts that will form the product after assembly.
“Design for assembly” means the design of the product for ease of assembly.
The document discusses various design for manufacturing and assembly (DFMA) principles including: design for machining (standardization, material choice, part size/shape), design for economy (reducing lifecycle costs), design for clampability (ease of clamping parts), design for accessibility (ease of accessing parts), and design for assembly (minimizing parts, using self-locating/fastening features, modular design). It provides guidelines and examples for each principle to facilitate part and product design for efficient manufacturing and assembly.
This report is a research on how to use DFM (Design For Manufacturing) engineering method to reduce the cost and time of manufacturing. Additionally it is describing (how to choose/which is the best) production(manufacturing) technology.
1) The document describes a practical methodology for designing, developing, and validating mufflers using both computational and experimental methods. It involves benchmarking existing muffler designs, calculating target frequencies, determining muffler volume, conceptualizing internal configurations, conducting virtual simulations, manufacturing prototypes, and experimentally testing prototypes.
2) Key steps include calculating cylinder firing rates and engine firing frequencies to determine target attenuation frequencies, conceptualizing muffler internal configurations using perforated tubes and other elements, virtually simulating muffler transmission loss and back pressure, manufacturing low-cost prototypes, and experimentally testing prototypes using two-source transmission loss methods.
3) The goal is to shorten the product development cycle time by leveraging both computational acoustic tools and practical testing
The document summarizes the design for manufacturing and assembly of a folding chair. It discusses the old design of the chair which had many parts and complex manufacturing processes. The new design concept aims to reduce the number of parts to just three frames and a seat, all made from the same ABS material, which can be easily snap-fitted together. This simplifies manufacturing and assembly while reducing costs. DFMA and DFA principles and software are used to analyze the old design and develop the new concept chair.
The document discusses engineering design and creativity. It begins by defining engineering design as a process of devising systems to meet needs, applying science and optimizing resources. It emphasizes that design involves establishing objectives, synthesis, analysis and evaluation. The document then discusses differentiating science, technology and engineering, with science concerning natural phenomena, technology modifying nature, and engineering applying technology for human purposes. It provides examples to illustrate the relationships between science, technology and engineering. The document also discusses characteristics of design such as objectives, constraints, functions and form. It describes using objective trees to clarify and organize design goals and subgoals. Finally, it discusses initiating creative designs and improving creativity, noting creativity involves intuition and sensing incomplete ideas that are later clarified
The document discusses various Design for X (DFX) methodologies that can be implemented in product design to optimize aspects like manufacturing, procurement, supply chain management, testability, flexibility, portability, reusability, repairability, regulatory compliance, reliability, safety, quality, cost, and assembly. Key DFX approaches covered include designing for deployment, developing thorough product design specifications and engineering drawings, considering multiple suppliers, adding testability features, making the design scalable and modular, enabling reuse of components, easing repairs, meeting regulations, performing reliability tests, ensuring safety, using quality tools and processes, reducing costs, and simplifying 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.
DESIGN FOR MANUFACTURING AND ASSEMBLY.A really good insight of DFA and DFM. Also includes a very precise and appealing caste study on aimplemention of DFMA on a motor drive assembly.
The document discusses design for manufacturing and assembly (DFMA). It covers the fundamentals of DFMA, including design for manufacture, design for assembly, and differences between the two. It also provides examples of applying DFMA principles and guidelines to redesign a motor drive assembly to reduce the number of parts from 19 to 4. Reasons for not implementing DFMA are listed, such as lack of time, low volume production, and refusal to use DFMA tools. Advantages of applying DFMA during design include reduced cost, time to market, and improved quality.
Design for Manufacturing and Assembly (DFMA) is a methodology used to minimize product cost through design and process improvements. DFMA integrates product design and process planning to design products that are easily and economically manufactured. The goal of DFMA is to reduce material, overhead, and labor costs, shorten product development times, and utilize standardization to reduce costs. Key principles of DFMA include reducing the total number of parts, developing modular designs, using standard components, designing parts for multi-functionality and multi-use, and minimizing assembly directions.
The document introduces design for manufacture and assembly (DFMA) and discusses its benefits. It describes how applying DFMA principles during World War II enabled increased production of aircraft. DFMA aims to integrate design and manufacturing considerations early in the design process. Tools like the Boothroyd-Dewhurst method help evaluate designs and identify improvements to reduce costs and assembly time. The document provides several examples showing how DFMA led to significant reductions in the number of parts, assembly time, costs and defects for different products.
This document describes the development of an intelligent system to incorporate manufacturing constraints into the design process. The system analyzes design features from a CAD drawing and relates them to machining features. It then determines which manufacturing processes can produce those features and whether any design for manufacturing rules have been violated. The system considers production type, materials, tolerances, surface finish, feature characteristics, and accessibility. Currently, the system focuses on classifying and analyzing hole features, such as through holes, blind holes, counterbored holes, etc. It determines the appropriate machining processes based on criteria like whether the hole has a rotational axis. The goal is to help designers create designs that are easier to manufacture.
DFMA -Design For Manufacturing and AssemblySunith Guraddi
The document discusses applications of design for manufacture and assembly (DFMA) principles. It provides examples of how DFMA has been applied to improve products designed for developing world contexts. One example is a redesigned pineapple juicer that had fewer parts, lower production costs, and was easier to manufacture due to applying modified DFMA principles. Another example discusses reducing the part count and assembly time of a stapler through DFMA analysis. The document also outlines DFMA methodologies and principles that were developed to help designers lower costs and improve producibility, such as reducing part count, standardizing materials, and designing for automated production when feasible.
This document discusses concepts related to product design for manufacturing and assembly (DFMA). It defines DFMA as the combination of design for manufacturing (DFM) and design for assembly (DFA) to efficiently manufacture and easily assemble products with minimum cost. The document outlines several key principles of DFMA, including reducing the number of parts, designing for ease of fabrication and manufacturing, utilizing common parts and materials, and mistake-proofing designs. The overall goal of DFMA is to integrate product design with manufacturing processes to lower costs and shorten development time.
Manufacturing Process Simulation Based Geometrical Design for Complicated PartsLiu PeiLing
More than ever, it is critical that products are designed and manufactured right the first time. Design for Manufacturing (DFM) methodology has been recognized as one of the most effective ways to short product lifecycle time and reduce manufacturing cost. The main function of DFM in the detailed design stage is analyzing the manufacturability of the part. Various existing manufacturability evaluation methods have their limitations. In this paper, a new approach to DFM for the complicated parts is proposed. Instead of checking the manufacturability following the design, the in-process model resulting from the manufacturing process simulation is used to generate process dependent geometry surfaces at the design stage. The definition of the manufacturing process dependent geometry is given, and the methodology for creation of in-process model is presented in details.
This document summarizes a technical paper about design for manufacture (DFM) and design for assembly (DFA) tools. It discusses how DFM and DFA principles were developed to improve manufacturability and reduce costs. Software tools that integrate DFM and DFA analysis are presented, including the Boothroyd-Dewhurst software. The paper concludes by examining decision models for selecting DFM/DFA software based on required functions, supported processes, interfaces, and operating systems.
Facts on DFMA, Necessary for Next generation Designers to appreciate Integrate Design, Manufacturing and Assembly .
Collaborative Cross functional Team approach will bring Innovative and Low cost Quality Products into LIFE
This document summarizes a technical paper that discusses the use of design for manufacture (DFM) and design for assembly (DFA) tools in modern manufacturing. It describes how DFM and DFA aim to reduce costs by integrating design and manufacturing considerations. Software tools are presented that help with tasks like estimating part costs, assembly times, and evaluating design alternatives. The principles and approaches of DFM, DFA, and integrated design tools are outlined.
Concurrent Engineering- for Environment & SustainabilityIRJET Journal
This document discusses concurrent engineering and its benefits for sustainability and the environment. Concurrent engineering involves simultaneous development of products and processes through cross-functional team collaboration. It aims to shorten development timelines while improving quality. The document outlines the key elements and implementation of concurrent engineering. It discusses how concurrent engineering supports sustainability through immediate response to demands, reduced environmental impacts, and improved material efficiency. The document argues concurrent engineering is needed to quickly respond to changing environments through continuous improvement and inclusion of environmental constraints in decision making.
The document discusses group technology (GT) layout in manufacturing. GT involves grouping parts with similar manufacturing processes into part families and arranging machines into cells based on the process requirements of each family. This allows performing similar activities together and avoiding unnecessary changes between unrelated tasks. It standardizes related activities to focus on distinct differences and avoids duplicating efforts. Information about recurring problems can also be efficiently stored and retrieved to reduce search time. The main advantages of GT include reduced costs, improved flexibility, and increased worker motivation. However, it also involves less manufacturing flexibility and can increase machine downtime if cells are not functional throughout production. The document then discusses characteristics of a good layout design, including efficient space utilization, flexibility, accessibility, and reduced material handling
PROCESS IMPOVEMENT PLAN Page | 1
PROCESS IMPOVEMENT PLAN
Submitted By:
Course number and name –
Submission Date: 3th June, 2021
TABLE OF CONTENTS
Introduction..............................................................................................................................3
Process Boundaries...................................................................................................................3
Process configuration................................................................................................................5
Process metrics..........................................................................................................................6
Targets for improved performance............................................................................................7
Introduction
The process improvement plan is the approach that seeks the side in which the ideas with weak processes in your established plan of business. It is the strategic based approach for improvement of business plan. There are different plan improvement methodologies that help to make better your plan and business idea. Process improvement involves the already present process in the business strategy which needs to be improved and enhanced it for better results. The steps include the identification of the process and its weak points, analyse the process and its effectiveness and coming up with strategic ideas to make it easier and convenient to implement. The improvement includes the better output and the satisfaction of the customer is their basic need. Setting new and advanced better practices can help out in improvement. Efficient strategy for identification, analysation and improvement are required. Finding weak links in the process chain and bottle necks which are the backbone of work and the next step is to identify the processes to nullify these from plans. These help to the better plan and make it to complete faster and easier without any hurdles. It helps to minimize the extra efforts that have been put up for the weak points that have been identified. It greases up the process and make it to regulate smoothly in the business run. Just identifying the problem and not doing a thing about it is not the solution of anything. It is just a counterproductive process. It is just like investing in the thing which you already knew that not giving you any profit. There is a flaw in anyone’s work because human can do mistakes but accepting the mistake and doing efforts to eliminate is the process of plan improvement. There are various steps that have been involved in the improvement of plan such as mapping, analysing, redesigning of the plan, assigning the required solutions and then its implementation can help a lot in making the plan improved and good enough to put up.
Process Boundaries
It is the description of the basic purpose of the p ...
This document discusses concurrent engineering and related concepts like sequential engineering, design for manufacturing (DFM), and design for assembly (DFA). It defines concurrent engineering as handling product design, development, manufacturing equipment/processes, and repair tools simultaneously rather than consecutively. This decreases development time and improves productivity and costs. The document contrasts sequential and concurrent engineering processes. It also outlines the benefits of DFM and DFA, like simpler fabrication/assembly and improved quality. Tools for concurrent engineering include design guidelines, computer-aided design, and failure analysis. The conclusion states that implementing concurrent engineering and DFMA approaches can reduce costs and time to market.
IRJET- Design of Spoon Mold using Flow Analysis and Higher End Design SoftwareIRJET Journal
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Application of Design for Manufacturing and Assembly (DFMA) Methodology in
the Steel Furniture Industry
Conference Paper · March 2016
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2. National Conference on Technological Advancements in Engineering -2016
Sree Narayana Guru College of Engineering and Technology, Payyanur
March 2016
1
Abstract
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 overall cost. This paper gives an
overview on Design for Manufacture and assembly, an
application that can be used throughout various industries
to reduce the overall costing of a product, hence helping to
improve the overall company productivity. Two case studies
with respect to DFMA usage and its advantages are
presented in the current study. The products are analyzed
for DFMA and redesigned for cost reduction.
1. Introduction
DFMA is developed to give engineers a method to
evaluate assembly and the manufacturability of a product
and an aid to product development. Today companies
worldwide are battling to reduce the cost of the products in
order to increase profitability. Cost cutting of a product
begins at the design stage. This is where DFMA takes its
role. DFMA consists of a two part analysis of a product,
Design for Assembly (DFA) and Design for Manufacturing
(DFM) (Boothroyd, 1994).
DFMA presents a methodology for product structure
simplification through an integration ofthe DFMA software
with the Theory of Invention Problem Solving (Lucchetta
et.al, 2005). Cost data is rarely available for the designer in
the usable form. DFMA software can be used to investigate
the possibilities of activity based costing, modelling,
purchasing and manufacturing processes in providing useful
costing information to the designers (Katja.T et.al, 2002). A
complete DFMA analysis helps to give a categorical
approach to the cost to be infused with each division within
a firm to help use all resources to the most optimized
capabilities which in the end help provide more efficient
product to the consumers (Mark Oakley, 1982). DFMA can
be utilized extensively in a core field industry with
successful implementation of the software to help restrain
the costing capabilities of a firm (Xiaofan Xie, 2006). In
this paper two case studies: one being DFMA of folding
chair and the other the DFMA of bunk bed is discussed.
1.1. Traditional design approach
Generally projects start off with certain problems which
are caused by misinterpretation of the available data, low
precision rate, lack of complete information etc., and which
could extend towards the entirety of the project unless the
mistakes are nipped at the bud.
Imprecise communication between the involved parts
could also be a problem the project may face and hence
must be categorized with other limitations such as machine
restrictions, low investments, schedules, space and logistics.
Hence we come across the necessity to create a new product
with cost effective measures taken into account within the
shortest possible times, all without losing the knowledge
acquired about the processes and also our consumer
requirements. A traditional design project generally has
certain steps to be followed mainly being; - Identification of
customer needs and desires as an input, - An output
represented by the product or service to match the
consumer’s needs to the fullest possible extent.
DFMA helps optimize both of these important methods
into one single step wherein it takes into consideration the
needs and desires of the consumer and also optimizes the
correct design to be chosen which will help reduce overall
production cost and hence help improve entire productivity.
It also helps reduce the usage of a lot of redundant parts or
assemblies in a product.
The traditional design, fails to interpret certain
information that flows from the input process to the output
process, information that can show certain limitations
and/or show certain situations that abet or rather call for
certain changes or improvements in the entire procedures
used. All these limitations and erogenous interpretations
call for the use of an efficient process, such as, the DFMA.
The design of a product determines its manufacturability,
not the manufacturer itself, whatever levels ofsophistication
are taken into account. DFMA helps us sort out and
categorize the entire list of products and parts required for a
design and also helps us make the decision of which
redundant part or parts can be omitted from the project in
order to reduce the overall cost of the project.
Application of Design for Manufacturing and Assembly (DFMA)
Methodology in the Steel Furniture Industry
C D Naiju, Jayakrishnan V, Pranav V. Warrier and Rijul B
School of Mechanical Engineering
VIT University
cdnaiju@vit.ac.in
3. National Conference on Technological Advancements in Engineering -2016
Sree Narayana Guru College of Engineering and Technology, Payyanur
March 2016
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1.2. DFMA- an overview
Organizations tend to believe in a continual learning
process because they keep trying to learn newer methods
and procedures that may help them reduce the overall
expense expended by the company in order to achieve the
same result, hence ensuring a higher productivityand alsoa
step closer to the six sigma achievement regulations
followed by a firm. The premise being, organizations learn
in order to improve their adaptability and efficiency during
times of change.
The main advantage DFMA offers is that it permits us to
run activities simultaneously in a parallel form, in
opposition of the tasks sequencing. They also allow the
usage of simulation techniques and a full synergy between
the teams i.e. the design team, manufacturing team, sales
team, finance team etc. This makes it possible to find
project failures or deviations and hence help in making the
changes required before the development procedures end.
DFMA Software is developed by Boothroyd Inc., for
optimization and is one of the most important software used
by a designer which helps during the design stage. The
various experiences a designer goes through are the result of
several mistaken situations, misinterpreted acts,
improvement opportunities or just really good ideas
acquired during the ongoing development and research in
the design area. High manufacturability level of a product
can be acquired with the help of DFMA software. Using the
techniques of DFMA, it is possible to attend to the various
issues that occur in the production and assembly line. The
most significant advantage of DFMA is the integration of
teamwork between the project, product, design,
manufacturing teams improving the designs, reliabilityand
also the improving the productivity of the product
simultaneously. The discussions above can be validated with
the help of two case studies: one being DFMA of folding
chair and the other the DFMA of bunk bed.
2. Case study 1: DFMA of folding chair
2.1. Analysis of the Existing Design
A folding chair is a portable chair that can be folded flat,
stored in a rack, row or on a cart. These chairs are used for
seating in areas where permanent seating is not practical.
They can be used in various indoor and outdoor function
like weddings, funerals etc. The CAD model is shown in the
fig 1 below. The existing design of the folding chair consists
of three round frames and a seat, which are all fastened with
the parts respect to each other. This frame consists ofa solid
round frames which are much thicker when compared tothe
re-designed model, making the frame heavier, hence more
expensive. The costing of the existing model of the folding
chair for a batch size of 1,000 products is given in table1.
Fig 1. Existing design of the folding chair
Table 1 Costing details before DFMA
No. Part Process Material
Cost
(Rs.)
1 Frame 1
Cutting/Weldin
g
Mild
Steel
150
2 Frame 2
Cutting/Weldin
g
Mild
Steel
75
3 Seat
Stamping/
Welding
Mild
Steel
450
2.2. Re-Design of folding chair
The re-designed model of the folding chair was carried
out considering the ease of assembly and reduction in
material and manufacturing process. The model consists of
a void at the top of the seat which reduces the use of
redundant parts, to the side of the frame are present two
hinges which are usually not taken into account when
conducting a DFMA analysis on the product.
Fig 2. Re-designed model
4. National Conference on Technological Advancements in Engineering -2016
Sree Narayana Guru College of Engineering and Technology, Payyanur
March 2016
3
The changes made were, them being Frame1, Frame 2
and seat. The new re-designed CAD model is shown in fig 2
below. The re-designed design of the chair consists of two
solid frames and a seat which are all spot welded with each
other hence helping to reduce the overall number of parts of
the chair from 9 to 3, also aimed at improving the
productivity. The costing detail for the new re-designed
model is shown in table 2.
Table 2. Costing details after DFMA
SL
No.
Part Process Material
Cost
(Rs.)
1 Frame 1
Cutting/
Welding
Mild Steel 135
2 Frame 2
Cutting/
Welding
Mild Steel 67
3 Seat
Stamping/
Welding
Mild Steel 405
3. Case Study 2: Bunk bed
3.1. Analysis of DFM for existing model
A bunk bed is a type of bed in which one or more cots can
be stacked one above the other helping us to utilize the
amount of space available to us in the best possible manner.
A bunk bed ensures that two or more people can occupy the
same amount of space required by a single person on a
single cot in a room. The existing design of the bunk bed
CAD model in shown in fig 3. Costing details for a batch
size if 1,000 before DFMA is shown in table 3. The figure
of the existing bunker bed is shown in figure 3, and its
costing model is provided in table number 3. The existing
model of the bunker bed consists of 12 different frames and
two bed plates which are fastened with each other.
Fig 3. Existing Model
Table 3. Costing details before DFMA
No. Part Process Material
Cost
(Rs.)
1 Base Stamping
Mild
Steel
153
2
Side
Support1
Cutting/
Welding
Mild
Steel
760
3
Side
Support3
Cutting/
Welding
Mild
Steel
1300
4 Bed
Cutting/
Welding
Mild
Steel
1900
5
Square
Bucket
Cutting/
Welding
Mild
Steel
300
6
Side top
Support
Assembly
fabrication
Mild
Steel
500
7 Bolt
Assembly
fabrication
Mild
Steel
0
8 Nut
Assembly
fabrication
Mild
Steel
0
3.2 Redesign of bunk bed
The redesigned model of the bunker bed now consists
of 7 different frames and two bed plates which are arc
welded with some parts and the rest of the parts being
fastened.
Fig 4. Re-designed Model
The figure of the re-designed bed can be seen in figure 4
and its costing model is provided in table number 4.The
wall mount tends to reduce the moving ability of the bed,
5. National Conference on Technological Advancements in Engineering -2016
Sree Narayana Guru College of Engineering and Technology, Payyanur
March 2016
4
nut helps reduce the number of parts to a considerable
extent enabling them to create a similar functioning product
for a smaller price range. Two projections can be seen on
the other side of the re designed bed which enables it to be
wall mounted and hence proves the part that a bunker bed
can be manufactured with lesser number of parts.
Table 4. Costing Details post DFMA
No. Part Process Material
Cost
(Rs.)
1 Base Stamping
Mild
Steel
148
2 Support
Cutting/
Welding
Mild
Steel
750
3 Bed
Cutting/
Welding
Mild
Steel
1200
4 Step
Cutting/
Welding
Mild
Steel
1500
5 Bolt
Assembly
fabrication
Mild
Steel
0
6 Nut
Assembly
fabrication
Mild
Steel
0
4. Conclusion
Design for manufacture and assemblywas conducted on a
bunker bed and a more optimized design was created which
helped improve the productivity of the product with respect
to costing. Form the case studies it was analyzed that for a
folding chair the total number parts of the chair were
reduced from 9 to 3, with the help of DFMA software. The
design was modified for ease in assembly. There was a
reduction in time for assembly of the product, as well. By
selection of proper materials and manufacturing processes
along with optimized assembly helped reduce the overall
cost of the folding chair from Rs. 675 per product toRs. 607
for a life volume of 10 units. When conducted on a bunker
bed the total weight of the product was reduced from 867.13
lb to 385.08 lb. Total number of parts of the new product
was reduced from 29 to 9, and its total cost has reduced
from Rs. 4530 to Rs. 3630.
References
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Product Design for Manufacturing and Assembly”, New
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