This document discusses design for manufacturing (DFM) which emphasizes manufacturing considerations throughout the product development process. It aims to lower production costs without compromising quality. The document outlines DFM objectives like reducing component, assembly and support costs. It describes a 5-step DFM process including estimating manufacturing costs, reducing costs at each stage, and considering impacts. An example of a GM engine redesign that achieved major cost savings through DFM is provided. Finally, the document lists numerous design principles for various stages of manufacturing like assembly, fastening, automation, quality testing, and maintenance.
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.
The document provides information about The Automation Professionals, an automation engineering company. It includes:
1) Contact details and background of the engineering manager, Mach CaoXuan, including his education and work experience in automation.
2) An overview of the company's manufacturing division and the services it provides, such as improving production processes, designing automated equipment, and project management.
3) A list of reference projects the company has completed for various clients, providing solutions for automation challenges in areas like assembly, material handling, and packaging.
The document discusses key factors to consider for design for manufacturing and assembly (DFMA). It identifies 10 rules for reducing manufacturing costs and difficulty: 1) reduce the total number of parts, 2) develop a modular design, 3) use standard components, 4) design for multi-functionality, 5) design for multi-use, 6) design for ease of fabrication, 7) avoid separate fasteners, 8) minimize assembly directions, 9) maximize compliance during assembly, and 10) minimize part handling. The document emphasizes that 70% of manufacturing costs are determined during the design phase, so DFMA principles should be followed to optimize production efficiency and costs.
1. The document discusses various aspects of designing products for manufacturing including design for manufacturing (DFM) and design for assembly (DFA). It outlines three methods to implement DFM: organizing cross-functional teams, using design rules, and applying CAD tools.
2. Major objectives of DFM include reducing component costs, assembly costs, and production support costs. Methods to reduce costs include standardizing parts, choosing appropriate production scales, and integrating parts.
3. Prototyping principles outlined in the document are that analytical prototypes are more flexible than physical ones, physical prototypes are needed to detect unanticipated issues, and prototypes can reduce risks and expedite the development process.
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.
This document discusses various aspects of product design including trends, stages of the design process, reasons for redesign, and design tools and methods. It covers topics like standardization, reliability, robust design, concurrent engineering, quality function deployment, the Kano model, design thinking, and service design. The stages of the product development process are outlined as idea generation, feasibility analysis, product and process specifications, prototype development, design review, market testing, introduction, and evaluation.
This document provides an overview of the Design for Manufacture course, including its objectives, textbooks, and Chapter 1 content on introduction to DFM. The key points are:
- The course covers factors for designing parts for manufacturability, GD&T techniques, and design considerations for various machining operations.
- Chapter 1 introduces DFM, the need for cost reduction, general design guidelines, advantages, and approaches like Taguchi's method and design for quality manufacturability.
- Major objectives of DFM are to estimate manufacturing costs, reduce component and assembly costs, and impact other factors through the design process.
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.
The document provides information about The Automation Professionals, an automation engineering company. It includes:
1) Contact details and background of the engineering manager, Mach CaoXuan, including his education and work experience in automation.
2) An overview of the company's manufacturing division and the services it provides, such as improving production processes, designing automated equipment, and project management.
3) A list of reference projects the company has completed for various clients, providing solutions for automation challenges in areas like assembly, material handling, and packaging.
The document discusses key factors to consider for design for manufacturing and assembly (DFMA). It identifies 10 rules for reducing manufacturing costs and difficulty: 1) reduce the total number of parts, 2) develop a modular design, 3) use standard components, 4) design for multi-functionality, 5) design for multi-use, 6) design for ease of fabrication, 7) avoid separate fasteners, 8) minimize assembly directions, 9) maximize compliance during assembly, and 10) minimize part handling. The document emphasizes that 70% of manufacturing costs are determined during the design phase, so DFMA principles should be followed to optimize production efficiency and costs.
1. The document discusses various aspects of designing products for manufacturing including design for manufacturing (DFM) and design for assembly (DFA). It outlines three methods to implement DFM: organizing cross-functional teams, using design rules, and applying CAD tools.
2. Major objectives of DFM include reducing component costs, assembly costs, and production support costs. Methods to reduce costs include standardizing parts, choosing appropriate production scales, and integrating parts.
3. Prototyping principles outlined in the document are that analytical prototypes are more flexible than physical ones, physical prototypes are needed to detect unanticipated issues, and prototypes can reduce risks and expedite the development process.
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.
This document discusses various aspects of product design including trends, stages of the design process, reasons for redesign, and design tools and methods. It covers topics like standardization, reliability, robust design, concurrent engineering, quality function deployment, the Kano model, design thinking, and service design. The stages of the product development process are outlined as idea generation, feasibility analysis, product and process specifications, prototype development, design review, market testing, introduction, and evaluation.
This document provides an overview of the Design for Manufacture course, including its objectives, textbooks, and Chapter 1 content on introduction to DFM. The key points are:
- The course covers factors for designing parts for manufacturability, GD&T techniques, and design considerations for various machining operations.
- Chapter 1 introduces DFM, the need for cost reduction, general design guidelines, advantages, and approaches like Taguchi's method and design for quality manufacturability.
- Major objectives of DFM are to estimate manufacturing costs, reduce component and assembly costs, and impact other factors through the design process.
This document provides an overview of design for manufacturing and assembly (DFMA) principles. It discusses general design principles for manufacturability, including simplifying designs, standardizing parts, designing for ease of fabrication and assembly, and designing within production process capabilities. Specific guidelines are provided for various manufacturing processes. Process capability and how it relates to a manufacturing process meeting specifications is also introduced.
This document contains lecture notes from a product design course on design for environmental sustainability. It discusses several factors to consider for minimizing materials consumption, energy consumption, toxic emissions, and optimizing product lifespan. These include dematerializing products, selecting less energy intensive materials, engaging renewable resources, designing for durability, maintenance, repair and reuse. The document also covers guidelines for cascade approach, design for disassembly, engaging reversible joining systems and recycling depth.
This document discusses various types of facility layouts including process, product, and fixed-position layouts as well as hybrid layouts. It provides details on the characteristics, advantages, and limitations of each type of layout. Specifically, it explains that process layouts group similar machines together by department, product layouts arrange machines in the order of operations, and fixed-position layouts involve bringing resources to stationary products. Hybrid layouts discussed include cellular manufacturing which organizes similar processes into work cells.
Design for Manufacturability Guidelines Every Designer should FollowDFMPro
The document discusses design for manufacturability guidelines for sheet metal parts. It outlines several key DFM parameters like minimum bend radius, hole placement, cutout distances, notches and reliefs. Ignoring these guidelines can cause issues like cracks, deformation and breakage. Traditional DFM methods are manual and problematic. Automating DFM checks in a software tool called DFMPro allows early validation of designs and avoidance of costly rework. A case study of a hi-tech manufacturer found annual part cost savings of over 2 million euros through use of DFMPro's automated DFM analysis and guidelines.
This document discusses design for manufacturing and assembly (DFMA). It defines DFM as designing parts for ease of manufacturing to lower costs. DFM should be done early and involve engineers, designers, manufacturers. The five principles of DFM are process, design, material, environment, and compliance. DFM utilizes design drawings and process information. It is a five-step iterative process of estimating costs, reducing component costs, reducing assembly costs, reducing production support costs, and considering other impacts of DFM decisions. Key strategies include understanding manufacturing constraints, integrating parts, choosing appropriate volumes, and error-proofing designs.
The document provides an introduction to machine design and the general considerations involved in designing machine components. It discusses the classification of machine designs, the general procedure for machine design, and considerations like the type of loads, material selection, motion of parts, and safety. It also summarizes the commonly used engineering materials and their important physical and mechanical properties that influence material selection for machine design.
Engineering Design is an iterative decision-making process used to devise a component, product, process, or system to meet the needs and functions desired by the user in a sustainable manner.
In machining fixtures, minimizing workpiece deformation due to clamping and cutting forces is essential
to maintain the machining accuracy. The various methodology used for clamping operation used in different application
by various authors are reviewed in this paper. Fixture is required in various industries according to their application. This can be
achieved by selecting the optimal location of fixturing elements such as locators and clamps. The fixture set up for component is done
manually. For that more cycle time required for loading and unloading the material. So, there is need to develop system which can
help in improving productivity and time. Fixtures reduce operation time and increases productivity and high quality of operation is
possible.
This document discusses design for manufacturing (DFM) principles and practices. It explains that DFM involves considering manufacturability throughout the product development process. Key aspects of DFM include estimating manufacturing costs, reducing costs of components and assembly, and ensuring design decisions minimize production costs while meeting quality standards. DFM is a cross-functional approach that requires inputs from various teams to optimize a design for manufacturing.
Design for x : Design for Manufacturing,Design for Assembly Naseel Ibnu Azeez
Concurrent engineering is a contemporary approach to DFSS. DFX techniques are part of detail design and are ideal approaches to improve life-cycle cost, quality, increased design flexibility, and increased efficiency and productivity using the concurrent design concepts (Maskell 1991). Benefits are usually pinned as competitiveness measures, improved decision-making, and enhanced operational efficiency. The letter “X” in DFX is made up of two parts: life-cycle processes x and performance measure
The document discusses various topics related to product design including different forms of design, importance of product design for static and dynamic products, design projects, requirements for a good design, concurrent engineering, and computer-aided techniques. It defines concurrent engineering as a systematic approach involving cross-functional teams to concurrently design products and processes considering the entire lifecycle. The document also outlines the benefits of concurrent engineering such as reduced time to market and costs.
1 a. Introduction design of machine elementDr.R. SELVAM
The document discusses machine design and standardization. It defines machine design as designing machine elements and arranging them optimally to perform useful work. It categorizes machine design into adaptive, development, and new design. Standardization is defined as obligatory norms for product characteristics like materials and dimensions to reduce variety. Standards include company, national, and international standards for materials, shapes, fits, tolerances, surface finish, and testing. Benefits of standardization include inventory control, interchangeability, improved quality, and safety.
Computer Aided Design - Unit I IntroductionJayavendhanJ
The document provides information on product cycles, design processes, sequential and concurrent engineering, and computer aided design (CAD). It describes the key stages in a typical product cycle as conceive, design, realize, and service. The design process is outlined as identification of needs, problem definition, conceptualization, feasibility study, preliminary design, detailed design, production, consumption, retirement, and distribution. Sequential engineering is defined as a linear process where stages are completed one after another, while concurrent engineering involves overlapping stages. CAD systems help designers through interaction, image manipulation, engineering analyses, simulation, animation, and automated drafting.
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.
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
Engineering design is an iterative process that applies science and problem solving techniques to modify or create something to meet predefined objectives. The basic stages include establishing objectives and criteria, analysis, synthesis, defining manufacturing techniques, usage, maintenance, and disposal. The design process involves understanding the problem, generating alternative solutions, evaluating alternatives against requirements, deciding on solutions, and communicating results through documentation. Safety, sustainability, and strategic questions are important aspects to consider throughout the design process.
BIM in the Green Zone focus's on using Revit as a tool to assess and manage sustainable and safety in design attributes in Architecture and Construction.
1. The document provides guidance from Rolls-Royce on how to design products for manufacture and assembly (DFMA). It explains that DFMA aims to minimize product costs through the lifecycle by making products simpler to manufacture and assemble.
2. The document covers DFMA principles and reviews design for assembly and design for manufacturing guidelines. It provides examples of how to reduce part counts, simplify handling and insertion, and prevent assembly errors.
3. Design for manufacturing guidelines include selecting cost-effective materials and processes, and standardizing sizes to reduce costs. Applying DFMA is presented as an ongoing, cross-functional process starting early in design.
The pancreas is both an exocrine and endocrine organ. Its exocrine function involves secreting enzymes to aid digestion. Its endocrine function involves producing hormones like insulin and glucagon that regulate blood sugar levels. The document discusses pancreatic anatomy, functions, and diseases like pancreatitis and diabetes that can arise from pancreatic dysfunction. It provides details on the causes, symptoms, diagnosis, and treatment of these conditions.
This document discusses how to have difficult conversations as an engineer by acknowledging your own fears and checking your ego, recognizing the other person's fears and pride, communicating as equals focused on resolution, asking questions to understand the problem, avoiding defensiveness, and following up. Difficult conversations are made easier through practice rather than procrastination. Key tips include taking a deep breath, leaving jargon at the door, watching your body language, and building a toolbox of helpful metaphors.
This document provides an overview of design for manufacturing and assembly (DFMA) principles. It discusses general design principles for manufacturability, including simplifying designs, standardizing parts, designing for ease of fabrication and assembly, and designing within production process capabilities. Specific guidelines are provided for various manufacturing processes. Process capability and how it relates to a manufacturing process meeting specifications is also introduced.
This document contains lecture notes from a product design course on design for environmental sustainability. It discusses several factors to consider for minimizing materials consumption, energy consumption, toxic emissions, and optimizing product lifespan. These include dematerializing products, selecting less energy intensive materials, engaging renewable resources, designing for durability, maintenance, repair and reuse. The document also covers guidelines for cascade approach, design for disassembly, engaging reversible joining systems and recycling depth.
This document discusses various types of facility layouts including process, product, and fixed-position layouts as well as hybrid layouts. It provides details on the characteristics, advantages, and limitations of each type of layout. Specifically, it explains that process layouts group similar machines together by department, product layouts arrange machines in the order of operations, and fixed-position layouts involve bringing resources to stationary products. Hybrid layouts discussed include cellular manufacturing which organizes similar processes into work cells.
Design for Manufacturability Guidelines Every Designer should FollowDFMPro
The document discusses design for manufacturability guidelines for sheet metal parts. It outlines several key DFM parameters like minimum bend radius, hole placement, cutout distances, notches and reliefs. Ignoring these guidelines can cause issues like cracks, deformation and breakage. Traditional DFM methods are manual and problematic. Automating DFM checks in a software tool called DFMPro allows early validation of designs and avoidance of costly rework. A case study of a hi-tech manufacturer found annual part cost savings of over 2 million euros through use of DFMPro's automated DFM analysis and guidelines.
This document discusses design for manufacturing and assembly (DFMA). It defines DFM as designing parts for ease of manufacturing to lower costs. DFM should be done early and involve engineers, designers, manufacturers. The five principles of DFM are process, design, material, environment, and compliance. DFM utilizes design drawings and process information. It is a five-step iterative process of estimating costs, reducing component costs, reducing assembly costs, reducing production support costs, and considering other impacts of DFM decisions. Key strategies include understanding manufacturing constraints, integrating parts, choosing appropriate volumes, and error-proofing designs.
The document provides an introduction to machine design and the general considerations involved in designing machine components. It discusses the classification of machine designs, the general procedure for machine design, and considerations like the type of loads, material selection, motion of parts, and safety. It also summarizes the commonly used engineering materials and their important physical and mechanical properties that influence material selection for machine design.
Engineering Design is an iterative decision-making process used to devise a component, product, process, or system to meet the needs and functions desired by the user in a sustainable manner.
In machining fixtures, minimizing workpiece deformation due to clamping and cutting forces is essential
to maintain the machining accuracy. The various methodology used for clamping operation used in different application
by various authors are reviewed in this paper. Fixture is required in various industries according to their application. This can be
achieved by selecting the optimal location of fixturing elements such as locators and clamps. The fixture set up for component is done
manually. For that more cycle time required for loading and unloading the material. So, there is need to develop system which can
help in improving productivity and time. Fixtures reduce operation time and increases productivity and high quality of operation is
possible.
This document discusses design for manufacturing (DFM) principles and practices. It explains that DFM involves considering manufacturability throughout the product development process. Key aspects of DFM include estimating manufacturing costs, reducing costs of components and assembly, and ensuring design decisions minimize production costs while meeting quality standards. DFM is a cross-functional approach that requires inputs from various teams to optimize a design for manufacturing.
Design for x : Design for Manufacturing,Design for Assembly Naseel Ibnu Azeez
Concurrent engineering is a contemporary approach to DFSS. DFX techniques are part of detail design and are ideal approaches to improve life-cycle cost, quality, increased design flexibility, and increased efficiency and productivity using the concurrent design concepts (Maskell 1991). Benefits are usually pinned as competitiveness measures, improved decision-making, and enhanced operational efficiency. The letter “X” in DFX is made up of two parts: life-cycle processes x and performance measure
The document discusses various topics related to product design including different forms of design, importance of product design for static and dynamic products, design projects, requirements for a good design, concurrent engineering, and computer-aided techniques. It defines concurrent engineering as a systematic approach involving cross-functional teams to concurrently design products and processes considering the entire lifecycle. The document also outlines the benefits of concurrent engineering such as reduced time to market and costs.
1 a. Introduction design of machine elementDr.R. SELVAM
The document discusses machine design and standardization. It defines machine design as designing machine elements and arranging them optimally to perform useful work. It categorizes machine design into adaptive, development, and new design. Standardization is defined as obligatory norms for product characteristics like materials and dimensions to reduce variety. Standards include company, national, and international standards for materials, shapes, fits, tolerances, surface finish, and testing. Benefits of standardization include inventory control, interchangeability, improved quality, and safety.
Computer Aided Design - Unit I IntroductionJayavendhanJ
The document provides information on product cycles, design processes, sequential and concurrent engineering, and computer aided design (CAD). It describes the key stages in a typical product cycle as conceive, design, realize, and service. The design process is outlined as identification of needs, problem definition, conceptualization, feasibility study, preliminary design, detailed design, production, consumption, retirement, and distribution. Sequential engineering is defined as a linear process where stages are completed one after another, while concurrent engineering involves overlapping stages. CAD systems help designers through interaction, image manipulation, engineering analyses, simulation, animation, and automated drafting.
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.
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
Engineering design is an iterative process that applies science and problem solving techniques to modify or create something to meet predefined objectives. The basic stages include establishing objectives and criteria, analysis, synthesis, defining manufacturing techniques, usage, maintenance, and disposal. The design process involves understanding the problem, generating alternative solutions, evaluating alternatives against requirements, deciding on solutions, and communicating results through documentation. Safety, sustainability, and strategic questions are important aspects to consider throughout the design process.
BIM in the Green Zone focus's on using Revit as a tool to assess and manage sustainable and safety in design attributes in Architecture and Construction.
1. The document provides guidance from Rolls-Royce on how to design products for manufacture and assembly (DFMA). It explains that DFMA aims to minimize product costs through the lifecycle by making products simpler to manufacture and assemble.
2. The document covers DFMA principles and reviews design for assembly and design for manufacturing guidelines. It provides examples of how to reduce part counts, simplify handling and insertion, and prevent assembly errors.
3. Design for manufacturing guidelines include selecting cost-effective materials and processes, and standardizing sizes to reduce costs. Applying DFMA is presented as an ongoing, cross-functional process starting early in design.
The pancreas is both an exocrine and endocrine organ. Its exocrine function involves secreting enzymes to aid digestion. Its endocrine function involves producing hormones like insulin and glucagon that regulate blood sugar levels. The document discusses pancreatic anatomy, functions, and diseases like pancreatitis and diabetes that can arise from pancreatic dysfunction. It provides details on the causes, symptoms, diagnosis, and treatment of these conditions.
This document discusses how to have difficult conversations as an engineer by acknowledging your own fears and checking your ego, recognizing the other person's fears and pride, communicating as equals focused on resolution, asking questions to understand the problem, avoiding defensiveness, and following up. Difficult conversations are made easier through practice rather than procrastination. Key tips include taking a deep breath, leaving jargon at the door, watching your body language, and building a toolbox of helpful metaphors.
Management of Patients With Diabetes Mellitus.pptssusera85eeb1
This document discusses diabetes mellitus and its management. It defines diabetes as a group of diseases characterized by hyperglycemia. It describes the two main types as type 1, where the pancreas produces little to no insulin, and type 2, where cells become resistant to insulin. Treatment involves dietary management, exercise, glucose monitoring, and insulin or oral medications. The goals of treatment are to normalize blood glucose levels and prevent complications through intensive control.
The document discusses guidelines for developing muscular endurance through circuit training, including FITT principles and exercises targeting different muscle groups to include in a circuit.
Lent is the 40 day period before Easter that commemorates Jesus fasting in the desert for 40 days. Traditionally, Christians give up luxuries like meat or indulgences like chocolate during this time to remember Jesus' sacrifice and strengthen their willpower against temptation. Lent ends with the celebration of Easter and Jesus' resurrection.
The document discusses Lent, the 40 day period before Easter. It explains that Lent begins on Ash Wednesday and is meant to commemorate the 40 days Jesus spent fasting in the desert. Traditionally, people would give up certain foods like meat or sweets during Lent as a form of fasting and sacrifice. Now people often give up something like chocolate or complete acts of service instead. The purpose of Lent is to prepare spiritually for Easter through prayer, penance, and good works.
Sheet metal processes unit_iv_origional.pptssusera85eeb1
Sheet metal processes involve cutting, bending, and forming thin metal sheets. Common processes include shearing to cut sheets, bending using various dies, drawing to make hollow parts, and stamping using progressive dies. Other specialized processes such as roll forming, spinning, and superplastic forming provide unique shapes through techniques like continuous bending over rolls or stretching over mandrels at high temperatures. A variety of automotive, aircraft, and household goods are produced from sheet metal using these forming techniques.
This document provides an overview of manufacturing processes and engineering. It discusses key topics like process planning, industrial engineering, layout engineering, and material handling. Process planning involves defining the sequential operations and equipment needed for manufacturing. Industrial engineering activities include capacity planning, manpower planning, and recommending the type of manufacturing and layout. Layout engineering deals with arranging facilities, lines, and equipment within buildings and on the site. The document compares different types of layouts like process, product, and fixed position layouts.
Tribology is the study of friction, wear, and lubrication between interacting surfaces. There are several types of wear including adhesive wear, abrasive wear, surface fatigue, and fretting wear. Adhesive wear occurs due to direct contact and plastic deformation between surfaces, while abrasive wear involves hard particles forcing against and moving along a softer surface. Lubrication reduces wear by interposing a lubricant between surfaces to help carry the load. Different lubrication regimes exist including fluid film, boundary, and hydrodynamic lubrication. Wear measurement techniques include using the Archard equation and analyzing wear debris and worn surface characteristics.
This document provides an introduction to the basics of tribology, which is the study of friction, lubrication, and wear between surfaces in contact. It discusses how tribology encompasses many fields of engineering and industry. Surfaces in contact are not flat and have roughness at multiple scales, from nanometers to centimeters. Both the physical roughness and chemical properties of surfaces need to be considered in tribology as they influence contact area, stresses, lubrication, and compatibility. A variety of methods can characterize surface properties. Understanding surfaces is fundamental to tribology as the interaction between surface asperities dictates tribological forces.
The document discusses improvements to increase the gloss level of paint on Ashok Leyland truck cabins. It begins with identifying low gloss levels of 92% on Boss model cabins as the problem. Potential causes of low gloss are analyzed using a fishbone diagram and screening analysis identifies ED bath solvent%, robot flow rate, slow thinner, and paint viscosity as significant factors. An experiment following a Placket design evaluates these factors at different levels. The most significant factors found through a full factorial experiment are further optimized to increase the gloss level above 95%, resolving the low gloss issue.
Fettling is the process of preparing castings for use by removing unwanted material like gates, risers, fins, and imperfections. It involves several steps and techniques. First, dry sand cores are knocked out and gates and risers are removed through chipping, cutting, flame cutting, or abrasive machines depending on the material. Then fins and other projections on the casting surface are chipped off. Finally, the casting is cleaned through tumbling or modern blasting processes to produce a quality final product meeting customer standards. Fettling transforms crude castings into functional components through various removal and finishing operations.
The document discusses surface coating technologies for medical devices to prevent infections. It describes general strategies like minimizing contact through clean room conditions, sterilization to kill microbes, and surface coatings to minimize protein binding and bacterial adhesion. Specific coating methods are plasma treatment and covalent immobilization to modify surface chemistry and properties. Coatings can increase hydrophilicity and reduce protein adsorption to improve biocompatibility. Examples include heparin coatings to prevent thrombosis and phosphorylcholine coatings that mimic cell membranes. Emerging applications include coatings for imaging, drug delivery, and tissue engineering.
This document discusses heat treatment processes for metals. It covers various heat treatment methods like annealing, normalizing, hardening and tempering. It describes processes like case hardening, through hardening, induction hardening and vacuum heat treatment. Key information covered includes different heat treatment methods for ferrous and non-ferrous metals, advantages of various processes, factors influencing heat treatment selection, and details of specific processes like carburizing and quenching methods.
The document discusses different finishing techniques for materials like wood and metals. It explains that wood can be finished through sanding and staining or varnishing. Its natural durability can also be enhanced through pressure treatment with preservatives. For metals, protective coatings like paint, plastic coatings, anodizing of aluminum, or electroplating are used to prevent corrosion. The finishing method chosen depends on factors like the material and intended environmental conditions.
This document discusses coating defects, failures, and the role of coating inspectors. It describes common coating failures such as delamination, blistering, blush, sags/runs, and others. The coating inspector works to identify defects and prevent failures by ensuring proper surface preparation and application procedures. Premature coating failures can be costly due to substrate repair, rework, and downtime.
This document provides an overview of forging processes and operations. It describes various forging techniques including open die forging, impression die forging, closed die forging, precision forging, coining, heading, piercing, hubbing, orbital forging, and isothermal forging. Equations for calculating forging forces are provided. Examples of typical forged products like bolts, gears, and hand tools are given. Diagrams illustrate the different steps in various forging processes.
This document provides an overview of quality management concepts. It discusses why quality is important, different dimensions of quality, quality control methods like control charts, the costs of quality, and statistical process control. Key points covered include defining quality from the perspectives of producers and consumers, determining optimal quality levels, setting quality standards, and using various tools like histograms, Pareto charts, and fishbone diagrams to identify quality issues. The document also distinguishes between chance and assignable causes of process variation.
The document discusses inspections related to the implementation of ICH Q8, Q9, and Q10 guidelines. It outlines the aims, types, and focus of inspections. Key points include:
- Inspections evaluate commercial manufacturing capability and quality systems. Pre-approval inspections additionally evaluate submitted data authenticity.
- Inspections focus on implementing control strategies, design spaces, change management, and models for quality predictions and release.
- Case studies are used to demonstrate evaluating risks, variables, and implementing marketing authorization requirements at manufacturing sites.
This document discusses quality control and inspection. It defines quality as fitness for use and outlines why quality control is important to ensure consistent product quality given variability in manufacturing processes. Quality control involves planned actions to measure product characteristics against requirements. Inspections occur at various stages of production like pre-production, in-process, and final inspection to check for defects. Statistical tools like control charts and acceptance sampling are used to objectively evaluate quality.
Introduction- e - waste – definition - sources of e-waste– hazardous substances in e-waste - effects of e-waste on environment and human health- need for e-waste management– e-waste handling rules - waste minimization techniques for managing e-waste – recycling of e-waste - disposal treatment methods of e- waste – mechanism of extraction of precious metal from leaching solution-global Scenario of E-waste – E-waste in India- case studies.
International Conference on NLP, Artificial Intelligence, Machine Learning an...gerogepatton
International Conference on NLP, Artificial Intelligence, Machine Learning and Applications (NLAIM 2024) offers a premier global platform for exchanging insights and findings in the theory, methodology, and applications of NLP, Artificial Intelligence, Machine Learning, and their applications. The conference seeks substantial contributions across all key domains of NLP, Artificial Intelligence, Machine Learning, and their practical applications, aiming to foster both theoretical advancements and real-world implementations. With a focus on facilitating collaboration between researchers and practitioners from academia and industry, the conference serves as a nexus for sharing the latest developments in the field.
KuberTENes Birthday Bash Guadalajara - K8sGPT first impressionsVictor Morales
K8sGPT is a tool that analyzes and diagnoses Kubernetes clusters. This presentation was used to share the requirements and dependencies to deploy K8sGPT in a local environment.
DEEP LEARNING FOR SMART GRID INTRUSION DETECTION: A HYBRID CNN-LSTM-BASED MODELgerogepatton
As digital technology becomes more deeply embedded in power systems, protecting the communication
networks of Smart Grids (SG) has emerged as a critical concern. Distributed Network Protocol 3 (DNP3)
represents a multi-tiered application layer protocol extensively utilized in Supervisory Control and Data
Acquisition (SCADA)-based smart grids to facilitate real-time data gathering and control functionalities.
Robust Intrusion Detection Systems (IDS) are necessary for early threat detection and mitigation because
of the interconnection of these networks, which makes them vulnerable to a variety of cyberattacks. To
solve this issue, this paper develops a hybrid Deep Learning (DL) model specifically designed for intrusion
detection in smart grids. The proposed approach is a combination of the Convolutional Neural Network
(CNN) and the Long-Short-Term Memory algorithms (LSTM). We employed a recent intrusion detection
dataset (DNP3), which focuses on unauthorized commands and Denial of Service (DoS) cyberattacks, to
train and test our model. The results of our experiments show that our CNN-LSTM method is much better
at finding smart grid intrusions than other deep learning algorithms used for classification. In addition,
our proposed approach improves accuracy, precision, recall, and F1 score, achieving a high detection
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Understanding Inductive Bias in Machine LearningSUTEJAS
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Batteries -Introduction – Types of Batteries – discharging and charging of battery - characteristics of battery –battery rating- various tests on battery- – Primary battery: silver button cell- Secondary battery :Ni-Cd battery-modern battery: lithium ion battery-maintenance of batteries-choices of batteries for electric vehicle applications.
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1. Design for Manufacturing
Teaching materials to accompany:
Product Design and Development
Chapter 13
Karl T. Ulrich and Steven D. Eppinger
5th Edition, Irwin McGraw-Hill, 2012.
2. Product Design and Development
Karl T. Ulrich and Steven D. Eppinger
5th edition, Irwin McGraw-Hill, 2012.
Chapter Table of Contents:
1. Introduction
2. Development Processes and Organizations
3. Opportunity Identification
4. Product Planning
5. Identifying Customer Needs
6. Product Specifications
7. Concept Generation
8. Concept Selection
9. Concept Testing
10. Product Architecture
11. Industrial Design
12. Design for Environment
13. Design for Manufacturing
14. Prototyping
15. Robust Design
16. Patents and Intellectual Property
17. Product Development Economics
18. Managing Projects
7. Definition
• Design for manufacturing (DFM) is a development
practice emphasizing manufacturing issues
throughout the product development process.
• Successful DFM results in lower production cost
without sacrificing product quality.
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Introduction
• DFM is part of DFX
• DFM often requires a cross-function team
• DFM is performed through the development
process
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Major DFM objectives
• Reduce component costs
• Reduce assembly cost
• Reduce production support costs
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The DFM Process (5 steps)
1) Estimate the mfg. costs
2) Reduce the costs of components
3) Reduce the costs of assembly
4) Reduce the costs of supporting
production
5) Consider the impact of DFM decisions
on other factors.
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Estimate mfg. costs
• Cost categories
– Component vs. assembly vs. overhead
– Fixed vs. variable
– Material vs. labor
• Estimate costs for standard parts
– Compare to similar part in use
– Get a quote from vendors
• Estimate costs of custom made parts
– Consider material costs, labor costs, and tooling costs
– Depend on the production volume as well
• Estimate costs of assembly
– Summing up all assembly operations (time by rate)
• Estimate the overhead costs
– A % of the cost drives
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Reduce the costs of components
• Identify process constraints and cost drivers
• Redesign components to eliminate processing
steps
• Choose the appropriate economic scale for the
part process
• Standardize components and their processes
• Adhere the black-box component
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Reduce the costs of assembly
• Integrate parts (using the Boothroyd
method)
• Maximize ease of assembly
• Consider customer assembly (do-it-
yourself) technology driven products
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Reduce the costs of
supporting production
• Minimize systematic complexity (such as
plastic injection modeling for one step of
making a complex product)
• Error proofing (anticipate possible failure
modes in the production system and take
appropriate corrective actions early in the
development process)
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Considering impacts
• Development time
• Development cost
• Product quality
• External factors such as
– component reuse and
– life cycle costs
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DFM example
• Exhibit 13-15 on Page 274
• Unit cost saving of 45%
• Mass saving of 66% (33 Kg.)
• Simplified assembly and service procedures.
• Improved emissions performance
• Improved engine performance
• Reduce shipping costs (due to lighter components)
• Increased standardization across vehicle programs.
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Cost Appendices
• Materials costs
– Exhibit 13-17 on page 279
• Component mfg. costs
– Exhibits 13/18-21 on pages 280-283
• Assembly costs
– Page 286 for common products
– Page 287 for part handling and insertion times on
Ex. 13-23
– Cost structures for firms on Ex 13-24.
19.
20.
21.
22.
23.
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Design for X
– Design principles
• Part shape strategies:
– adhere to specific process design guidelines
– if part symmetry is not possible, make parts very
asymmetrical
– design "paired" parts instead of right and left hand parts.
– design parts with symmetry.
– use chamfers and tapers to help parts engage.
– provide registration and fixturing locations.
– avoid overuse of tolerances.
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Design for X
– Design principles
• Standardization strategy
– use standard parts
– standardize design features
– minimize the number of part types
– minimize number of total parts.
– standardize on types and length of linear materials and
code them.
– consider pre-finished material (pre-painted, pre-plated,
embossed, anodized).
– combine parts and functions into a single part.
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Design for X
– Design principles
• Assembly strategies 1
– design product so that the subsequent parts can be added to
a foundation part.
– design foundation part so that it has features that allow it to
be quickly and accurately positioned.
– Design product so parts are assembled from above or from
the minimum number of directions.
– provide unobstructed access for parts and tools
– make parts independently replaceable.
– order assembly so the most reliable goes in first; the most
likely to fail last.
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Design for X
– Design principles
• Assembly strategies 2
– make sure options can be added easily
– ensure the product's life can be extended with
future upgrades.
– use sub-assemblies, especially if processes are
different from the main assembly.
– purchase sub-assemblies which are assembled and
tested.
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Design for X
– Design principles
• Fastening strategies 1
– use the minimum number of total fasteners
– use fewer large fasteners rather than many small fasteners
– use the minimum number of types of fasteners
– make sure screws should have the correct geometry so that
auto-feed screwdrivers can be used.
– design screw assembly for downward motion
– minimize use of separate nuts (use threaded holes).
– consider captive fasteners when applicable (including
captive nuts if threaded holes are not available).
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Design for X
– Design principles
• Fastening strategies 2
– avoid separate washers and lockwashers (make it be
captivated on the bolt or nut so it can still spin with respect
to the fastener)
– use self-tapping screws when applicable.
– eliminate fasteners by combining parts.
– minimize use of fasteners with snap-together features.
– consider fasteners that push or snap on.
– specify proper tolerances for press fits.
30. 11/17/2022 30
Design for X
– Design principles
• Assembly motion strategies
– fastened parts are located before fastener is applied.
– assembly motions are simple.
– Assembly motions can be done with one hand or robot.
– assembly motions should not require skill or judgment.
– products should not need any mechanical or electrical
adjustments unless required for customer use.
– minimize electrical cables; plug electrical sub-assemblies
directly together.
– minimize the number of types of cable.
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Design for X
– Design principles
• Automation handling strategies 1
– design and select parts that can be oriented by automation
– design parts to easily maintain orientation
– use parts that will not tangle when handled in bulk.
– use parts what will not shingle when fed end to end (avoid
disks).
– use parts that not adhere to each other or the track.
– specify tolerances tight enough for automatic handling.
– avoid flexible parts which are hard for automation to
handle.
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Design for X
– Design principles
• Automation handling strategies 2
– make sure parts can be presented to automation.
– make sure parts can be gripped by automation.
– parts are within machine gripper span.
– parts are within automation load capacity.
– parting lines, spruces, gating or any flash do not
interfere with gripping.
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Design for X
– Design principles
• Quality and test strategies
– product can be tested to ensure desired quality
– sub-assemblies are structured to allow sub-assembly
testing
– testing can be performed by standard test instruments
– test instruments have adequate access.
– minimize the test effort spent on product testing consistent
with quality goals.
– tests should give adequate diagnostics to minimize repair
time.
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Design for X
– Design principles
• DF Maintenance strategies 1
– provide ability for tests to diagnose problems
– make sure the most likely repair tasks are easy to perform.
– ensure repair tasks use the fewest tools.
– use quick disconnect features
– ensure that failure or wear prone parts are easy to replace
with disposable replacements
– provide inexpensive spare parts in the product.
– ensure availability of spare parts.
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Design for X
– Design principles
• Maintenance strategies 2
– use modular design to allow replacement of modules.
– ensure modules can be tested, diagnosed, and adjusted
while in the product.
– sensitive adjustment should be protested from accidental
change.
– the product should be protected from repair damage.
– provide part removal aids for speed and damage
prevention.
– protect parts with fuses and overloads
36. 11/17/2022 36
Design for X
– Design principles
• Maintenance strategies 3
– protect parts with fuses and overloads
– ensure any sub-assembly can be accessed through one door
or panel.
– access over which are not removable should be self-
supporting in the open position.
– connections to sub-assemblies should be accessible and
easy to disconnect.
– make sure repair, service or maintenance tasks pose no
safety hazards.
– make sure sub-assembly orientation is obvious or clearly
marked.
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Design for X
– Design principles
• Maintenance strategies 4
– make sure sub-assembly orientation is obvious or clearly marked.
– provide means to locate sub-assembly before fastening.
– design products for minimum maintenance.
– design self-correction capabilities into products
– design products with self-test capability.
– design products with test ports
– design in counters and timers to aid preventative maintenance.
– specify key measurements for preventative maintenance programs
– include warning devices to indicate failures.
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Design for X
– Design principles
• Axomatic Design by Nam Suh
– Axiom 1
• In good design, the independence of functional
requirements is maintained.
– Axiom 2
• Among the designs that satisfy axiom 1, the best
design is the one that has the minimum
information content.
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Design for X
– Design principles
• Axiomatic design- corollaries
– Decouple or separate parts of a solution if functional requirements are
coupled or become coupled in the design of products and processes.
– Integrate functional requirements into a single physical part or
solution if they can be independently satisfied in the proposed
solution.
– Integrate functional requirements and constraints.
– Use standardized or interchangeable parts whenever possible.
– Make use of symmetry to reduce the information content.
– Conserve materials and energy.
– A part should be a continuum if energy conduction is important.
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Design for X
– Design principles
• DFA Method: Boothroyd and Dewhurst
– Apply a set of criteria to each part to
determine whether, theoretically, it should be
separated from all the other parts in the
assembly.
– Estimate the handling and assembly costs for
each part using the appropriate assembly
process - manual, robotic, or high-speed
automatic.
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Design for X
– Design principles
• Three criteria
– Is there a need for relative motion?
– Is there a need for different materials
– Is there a need for maintenance?
42. Design for Assembly Rules
Example set of DFA guidelines
from a computer manufacturer.
1. Minimize parts count.
2. Encourage modular assembly.
3. Stack assemblies.
4. Eliminate adjustments.
5. Eliminate cables.
6. Use self-fastening parts.
7. Use self-locating parts.
8. Eliminate reorientation.
9. Facilitate parts handling.
10. Specify standard parts.
43. Design for Assembly
• Key ideas of DFA:
–Minimize parts count
–Maximize the ease of handling parts
–Maximize the ease of inserting parts
• Benefits of DFA
–Lower labor costs
–Other indirect benefits
• Popular software developed by
Boothroyd and Dewhurst.
–http://www.dfma.com
45. Method for Part Integration
• Ask of each part in a candidate design:
1.Does the part need to move relative to the rest of
the device?
2.Does it need to be of a different material because
of fundamental physical properties?
3.Does it need to be separated from the rest of the
device to allow for assembly, access, or repair?
• If not, combine the part with another part in the
device.
46. Three Methods to Implement DFM
1. Organization: Cross-Functional Teams
2. Design Rules: Specialized by Firm
3. CAD Tools: Boothroyd-Dewhurst Software
47. DFM Strategy is Contingent
Corporate
Strategy
Production
Strategy
Product
Strategy
DFM
Strategy