...COMPUTER-AIDED DESIGN (CAD) AND COMPUTER-AIDED MANUFACTURING (CAM) Photo by: higyou Computer-aided design (CAD) and computer-aided manufacturing (CAM) are a pair of often interdependent industrial computer applications that have greatly influenced the chain of processes between the initial design and the final realization of a product. Many would add to this duo a third technology, computer-aided engineering (CAE). Ongoing refinements in CAD/CAM systems continue to save manufacturers tens of millions of dollars in time and resources over non-computerized methods. As a consequence, CAD and CAM technologies are responsible for massive gains in both productivity and quality, particularly since the 1980s. For some purposes CAD and CAM methods can be used exclusively of one another, and in general, CAD is used more commonly than CAM. CAD involves creating computer models defined by geometrical parameters. These models typically appear on a computer monitor as a three-dimensional representation of a part or a system of parts, which can be readily altered by changing relevant parameters. CAD systems enable designers to view objects under a wide variety of representations and to test these objects by simulating real-world conditions. CAM picks up where CAD leaves off by using geometrical design data to control automated machinery. CAM systems are associated with computer numerical control (CNC) or direct numerical control (DNC) systems. These systems differ from older forms...
Words: 2560 - Pages: 11
...Using separate methods of designing and making activities in quantity-production of jewelleries as a case, this paper will show how Computer Aided Designs (CAD) can be applied for designing jewelleries with complex shapes. Using separate methods of designing and making activities in quantity-production of jewelleries as a case, this paper will show how Computer Aided Designs (CAD) can be applied for designing jewelleries with complex shapes. Ng Jian Long (U095062A) Ng Jian Long (U095062A) Term Paper Assignment (CAD) Application of CAD for designing parts with complex shapes Term Paper Assignment (CAD) Application of CAD for designing parts with complex shapes ME3261/ME3261E Term Paper Assignment (CAD) Requirements: * Covering page: Title, Name, and Student Card Number. * The write-up should start with an introduction and end with a conclusion. References used in the body of the write-up should also be listed. * Source of materials: The specific case study concerns a reported application, such as from a magazine, a journal or the web sites – it is not expected to be a case study done by you. * Length limit: No more than 8 pages in the main body of the report (from introduction to reference section). Additional materials, if any, can be put in the Appendix. * Font size limit: No less than 10. * Spacing limit: 1.5 spaces should be used. * Submission deadline: October 30, 2012. Please upload the .PDF or MS-Word file to the ME3261 IVLE...
Words: 3098 - Pages: 13
...School of Accounting and Finance Master of Applied Finance Degree Assignment Corporate Finance Theory Dr. Jean Canil Instructions 1. Assignment two can be done in a group of no more than 2 students and it is the responsibility of the group to ensure that each student has contributed equally. 2. The first page of your assignment should specify your name(s), student number(s) and the assignment title. The assignment should be completed in Word format. Please show all workings. 3. Late assignments will not be accepted unless arrangements have been made with myself before the due date. EASTBORO MACHINE TOOLS CORPORATION In mid-September of 2001, Jennifer Campbell, chief financial officer of Eastboro Machine Tools Corporation, paced the floor of her Minnesota office. She needed to submit a recommendation to Eastboro’s board of directors regarding the company’s dividend policy, which had been the subject of an ongoing debate among the firm’s senior managers. Compounding her problem was the previous week’s terrorist attacks on the World Trade Center and the Pentagon. The stock market had plummeted in response to the attacks, and along with it Eastboro’s stock had fallen 18 percent, to $22.15. In response to the market collapse, a spate of companies had announced plans to buy back stock, some to signal confidence in their companies as well as in the U.S. financial markets, and others for opportunistic reasons. Now Jennifer Campbell’s dividend-decision...
Words: 6110 - Pages: 25
...NBER WORKING PAPER SERIES THE DISTINCT EFFECTS OF INFORMATION TECHNOLOGY AND COMMUNICATION TECHNOLOGY ON FIRM ORGANIZATION Nicholas Bloom Luis Garicano Raffaella Sadun John Van Reenen Working Paper 14975 http://www.nber.org/papers/w14975 NATIONAL BUREAU OF ECONOMIC RESEARCH 1050 Massachusetts Avenue Cambridge, MA 02138 May 2009 We would like to thank the ESRC for help with financing this research at the Centre for Economic Performance. We thank participants at the LSE Labor workshop, at the NBER Summer Institute in Labor and Personnel Economics, at the Harvard/MIT workshop in Organizational Economics and at the Microsoft Economics workshop for their useful comments. The views expressed herein are those of the author(s) and do not necessarily reflect the views of the National Bureau of Economic Research. NBER working papers are circulated for discussion and comment purposes. They have not been peerreviewed or been subject to the review by the NBER Board of Directors that accompanies official NBER publications. © 2009 by Nicholas Bloom, Luis Garicano, Raffaella Sadun, and John Van Reenen. All rights reserved. Short sections of text, not to exceed two paragraphs, may be quoted without explicit permission provided that full credit, including © notice, is given to the source. The distinct effects of Information Technology and Communication Technology on firm organization Nicholas Bloom, Luis Garicano, Raffaella Sadun, and John Van Reenen NBER Working Paper No. 14975 May...
Words: 15564 - Pages: 63
...School of Accounting and Finance Master of Applied Finance Degree Assignment Corporate Finance Theory Dr. Jean Canil Instructions 1. Assignment two can be done in a group of no more than 2 students and it is the responsibility of the group to ensure that each student has contributed equally. 2. The first page of your assignment should specify your name(s), student number(s) and the assignment title. The assignment should be completed in Word format. Please show all workings. 3. Late assignments will not be accepted unless arrangements have been made with myself before the due date. EASTBORO MACHINE TOOLS CORPORATION In mid-September of 2001, Jennifer Campbell, chief financial officer of Eastboro Machine Tools Corporation, paced the floor of her Minnesota office. She needed to submit a recommendation to Eastboro’s board of directors regarding the company’s dividend policy, which had been the subject of an ongoing debate among the firm’s senior managers. Compounding her problem was the previous week’s terrorist attacks on the World Trade Center and the Pentagon. The stock market had plummeted in response to the attacks, and along with it Eastboro’s stock had fallen 18 percent, to $22.15. In response to the market collapse, a spate of companies had announced plans to buy back stock, some to signal confidence in their companies as well as in the U.S. financial markets, and others for opportunistic reasons. Now Jennifer Campbell’s dividend-decision...
Words: 6110 - Pages: 25
...huge amounts of inexpensive products can be supplied in the domestic market. Considering this situation, competitiveness in cost and quality continue to be key issues for textile manufacturers. In order to significantly reduce time and cost in the supply chain, the industry needed to become more focused on consumers by developing a supply chain management process that would be demand driven and production that would be synchronized to replenish product at the consumer's pull rate (Lovejoy 2001). Today, consumers desire to personalize the style, fit and color of the clothes they buy, and require high-quality customized products at low prices with faster delivery (Lee & Chen 1999). New manufacturing technologies such as 3D body scanners, CAD/CAM systems, and digital textile printers have played a key role in increasing the effectiveness, flexibility, agility, and precision of production. Garment Industry Information Technology Upgrades Garment manufacturing technology should be understood as the traditional manufacturing technology, information technology, computer technology, automation technology and scientific management of advanced technology integrated multi-disciplinary and applied to garment manufacturing engineering,...
Words: 6653 - Pages: 27
...International Journal of Materials, Mechanics and Manufacturing, Vol. 1, No. 2, May 2013 Hydro turbine Runner Design and Manufacturing Fatma Ayancik, Umut Aradag, Ece Ozkaya, Kutay Celebioglu, Ozgur Unver, and Selin Aradag Abstract—This research describes a methodology for the parametric design, computational fluid dynamics (CFD) aided analysis and manufacturing of a Francis type hydro turbine runner. A Francis type hydro turbine consists of five components which are volute, stay vanes, guide vanes, runner and draft tube. The hydraulic performance of the turbine depends on the shape of the components; especially on the shape of the runner blades. The design parameters for the other components are affected by the runner parameters directly. Runner geometry is more complex than the other parts of the turbine. Therefore; to obtain accurate results and meet hydraulic expectations, CFD analyses and advanced manufacturing tools are necessary for the design and manufacturing of the hydro turbine runner. The turbine runner design methodology developed is presented using an actual potential hydraulic power plant in Turkey. Index Terms—CFD, francis turbine, runner, design and manufacturing. I. INTRODUCTION Turbines are used for hydropower generation. There are basically two types of hydraulic turbines, the first one is impulse and the second one is reaction type turbines. Impulse turbines work based on momentum principle; while in the reaction type turbines, the flow is fully...
Words: 2847 - Pages: 12
...Systems Engineering, University of Southern California, Los Angeles, CA 90089, USA Abstract This paper reviews the literature on the social impacts of programmable manufacturing technology (PMT). Several perspectives on the social impact of technology are identified ranging from simple additive models that view technology as having a set of individual and independent causal impacts to a contingency perspective which views the impact of technology as dependent on technical and organizational characteristics. The paper statistically summarizes 30 empirical studies within the 1986-1990 period and finds common trends in findings as well as contradictory evidence. The common trends are that PMT tends to lead to more organic organizations, but also meets with negative employee attitudes, stress, and perceptions of reduced job security and mobility. The contradictory evidence is that most studies report simple, additive effects, while a substantial portion find that the impacts depend on a wide range of contingency variables. The authors argue that simplistic views of PMT as being a homogeneous set of technologies with unidirectional, non-contingent social impacts is neither realistic nor useful. A number of future research directions in this area are suggested. Keywords. Social impacts of technology; Programmable ing; Sociotechnical systems; Organizational design automation; CAD/CAM; Manufactur- 1. Introduction The microelectronics revolution in manufacturing...
Words: 14431 - Pages: 58
...PRODUCT DESIGN Product Decision / Analysis / product Development Product Design 1) Product is anything that is capable of satisfying a felt need. A new product is the one which is truly innovative and is significantly different from other products. 2) Product Design specifies which materials are to be used, determines dimensions and tolerances define appearances of the product and sets standards of the performance. 3) Service Design specifies what physical items, sensual benefits and psychological benefits the customer is to receive from the service. Design has a tremendous impact on the quality of product or service. An Effective Design Process 1) Matches the product or service characteristics with customers requirement 2) Ensures customers requirements are met in simplest and least costly manner 3) Reduces the time required to design a new product or services 4) Minimize the revisions necessary to make a design workable. Product Design and Development 1) New Product Design 2) Improvement in the design of existing product due to life cycle of a product Product Decision: 1) the selection, definition and design of the products. The existing of the organization depends upon how well it provides goods and services to society. Since every product has life cycle the old product live for some time and die and hence new product are required for society this is due to changing societies, habits, tastes, liking etc. Thus operation...
Words: 3814 - Pages: 16
...Sigma and lean methodologies, and manufacturing systems engineering. He also manages two rapid prototyping systems at UTSA. His current research interests include sustainability of manufacturing systems and web-based applications in manufacturing. Mr. Firasath Ahmed Syed, University of Texas, San Antonio Syed Firasath Ahmed is a master’s student in advanced manufacturing and enterprise engineering at the University of Texas, San Antonio. He is a Graduate Research Assistant and helps with 3D Printing needs that arise in the Mechanical Engineering Department. He has experience in working with two rapid prototyping machines present in the university namely ”dimension SST 1200es” and ”Z Printer ZP450.” He received his B.S. degree from Osmania University, India, in 2010. His research interests include rapid prototyping, manufacturing engineering, system simulation, and lean systems. c American Society for Engineering Education, 2012 Preparing to Use Rapid Prototyping: Lessons Learned from Design and Manufacturing Projects Abstract Rapid prototyping (RP), also known as 3D Printing, has gained an important role in engineering education. It can be used to fabricate mechanical designs in a timely manner and hence is useful for design and manufacturing courses. In fact, many higher education institutions now have RP machines for research and teaching. Current literature reports that involving RP...
Words: 6053 - Pages: 25
...Major Project Report on Design and Control of an Electromechanical Actuator for Variable Valve Timing for Partial fulfilment to award of Bachelor of Technology in Automobile Engineering Submitted by Aditya Jindal (2K10/AE/25) Pankaj Kandpal (2k10/AE/40) Mohit Yadav (2K10/AE/37) Rahul Khurana (2K10/AE/48) Under the supervision of Dr. R.C. Singh DEPARTMENT OF AUTOMOBILE ENGINEERING DELHI TECHNOLOGICAL UNIVERSITY DELHI-110042 2014 Major Project Report on Design and Control of an Electromechanical Actuator for Variable Valve Timing for Partial fulfilment to award of Bachelor of Technology in Automobile Engineering Submitted by Aditya Jindal (2K10/AE/25) Pankaj Kandpal (2k10/AE/40) Mohit Yadav (2K10/AE/37) Rahul Khurana(2K10/AE/48) Under the supervision of Dr. R.C. Singh DEPARTMENT OF AUTOMOBILE ENGINEERING DELHI TECHNOLOGICAL UNIVERSITY DELHI-110042 2014 DECLARATION We hereby declare that the major project report entitled “Design and Control of an Electromechanical Actuator for Variable Valve Timing” submitted to Delhi Technological University is a record of original work done by us under the guidance of Dr. R.C. Singh, Department of Mechanical Engineering. It is further declared that this project work has not been submitted for the award of any other degree or diploma. Aditya Jindal (2K10/AE/25) Mohit Yadav (2K10/AE/37) Pankaj Kandpal (2K10/AE/40) Rahul Khurana (2K10/AE/48) ...
Words: 8224 - Pages: 33
...Seminar On Dental Ceramics – Metal Ceramics Presented by : Submitted to: Yashendra. Dr Kamlesh Vasudeva Dr Siddharth Phull Dr Anuj Wangoo Dr Sakshi Malhotra Dr Amit Sharma Dr Shiv Kumar INDEX Sr. No. | Topic | Page no. | 1 | Introduction | | 2 | History | | 3 | Terminology | | 4 | Classifications of Dental Ceramics | | 5 | Properties of Ceramics | | | Metal Ceramic Prostheses | | 6 | Compositions of Porcelain – for Metal Ceramics | | 7 | Requirements for a metal – ceramic system | | 8 | Effect of design on metal ceramic restorations | | 9 | Tooth preparation for PFM restorations | | 10 | Fabrication of porcelain | | a | Porcelain Condensation | | b | Sintering of Porcelain | | c | Method of fabrication | | 11 | Metal-Ceramic Crowns Based on Burnished Foil Copings | | 12 | Failure and repair of metal ceramic restorations | | 13 | Benefits and Drawbacks of Metal-Ceramics | | a | Aesthetic Potential of Metal-Ceramic Crowns Versus All-Ceramic Crowns | | 14 | Conclusion | | 15 | References | | INTRODUCTION The word ceramic is derived from the Greek word keramos which literally means ‘burnt stuff’ but which has come to mean more specifically a material produced by burning or firing. The term ceramic refers to any product made from a non-metallic inorganic material usually processed by firing at a high temperature to achieve desirable properties. This material is opaque, relatively weak and porous...
Words: 7062 - Pages: 29
...illustration causal chain Figure 1: Given a geometric model of a mechanical assembly, we analyze it to infer how the individual parts move and interact with each other. The relations and motion parameters are encoded as a time-varying interaction graph. Once the driver is indicated by the user, we compute the motion of the assembly and use it to generate an annotated illustration to depict how the assembly works. We also produce a corresponding causal chain sequence to help the viewer better mentally animate the motion. Abstract How things work visualizations use a variety of visual techniques to depict the operation of complex mechanical assemblies. We present an automated approach for generating such visualizations. Starting with a 3D CAD model of an assembly, we first infer the motions of individual parts and the interactions between parts based on their geometry and a few user specified constraints. We then use this information to generate visualizations that incorporate motion arrows, frame sequences and animation to convey the causal chain of motions and mechanical interactions between parts. We present results for a wide variety of assemblies. Keywords: mechanical assembly, motion depiction, visualization, shape analysis, causal chaining movement. For example, the gearbox in a car is a collection of interlocking gears with different ratios that transforms rotational force from the engine into the appropriate revolution speed for the wheels. Understanding how the parts interact...
Words: 9293 - Pages: 38
...Downloaded By: [Schmelich, Volker] At: 10:58 11 March 2010 Focus THEME COMPETITIVESTRATEGY FOR ELECTRONIC COMMERCE In many respects, Korean economy has been coordinated by the visible hand of the government. The world economy is becoming a borderless one, which directly affects the Korean economy driving it into an open economy. The rising cost of production factors, wage rates, interest rates, and land costs stalls economic growth. Both internal and external economic environment casts doubt over the prospects of the Korean economy. Both public and private sectors are looking for ways to maintain their competitive edge by improving economic efficiency, and one of those efforts is the use of IT. They are making an utmost effort to build the information-communication infrastructure, and promoting EC to explore new business opportunities. Various efforts are being made to facilitate the diffusion of the EC in Korea. The diffusion of proprietary EC within a conglomerate may be made quickly with little trouble. The IOS or EC within a conglomerate is highly likely to be a closed one, which is not unusual among Korean conglomerates. This may result in a situation that goes against global technological future: an open EC system. Korean corporates have recently devoted a vast amount of effort to business process reengineering using IT to improve efficiency. In contrasts, SMEs lack appropriate IT skills requirrd for such innovative movements. This may result...
Words: 2647 - Pages: 11
...Final Current Trends and Issues in Operations Management Presented To Operations Management Respectfully Submitted By Introduction 3 A Brief History of Operations Management 4 Current Trends and Issues in Operations Management 6 Lean Operations (Just-in-time) 6 Shrinking Product Life Cycles 7 Employee Empowerment and Training 8 Globalization 9 Total Quality Management 9 Advances in Technology 10 Insourcing 10 Conclusion 11 References 12 Introduction Operations is the part of a business organization that is responsible for producing goods and services (Stevenson, 2012, p. 4). In this definition, goods are tangible items. Goods can be finished items that are sold to end consumers such as a chair, a car, a computer, or a house. Goods can also be the raw materials, parts, and subassemblies that comprise the finished goods described above. These raw materials are sold as well, but not to end consumers. They are sold to the producers of the finished products. Services, for the most part, are not tangible, but are activities that provide some combination of time, location, form, or psychological value (Stevenson, 2012, p. 4). Services such as the ability to place a cell phone call, electricity in a home, advice from a financial planner, traveling on an airline, receiving medical treatment, or staying in a hotel are all considered services directed at an end consumer. One definition for the word management is “the person or persons controlling...
Words: 2745 - Pages: 11
