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Introduction of computer aided manufacturing.pptx

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Introduction of computer aided manufacturing.pptx

  1. 1. Computer Aided Manufacturing Prepared by Prof. Chirag patel Department of Mechanical Engineering Pacific School Of Engineering, Surat
  2. 2. Introduction • Computer Aided Manufacturing (CAM) can be defined as the use of computer systems to plan, manage and control the operations of a manufacturing plant through either direct or indirect computer interface with the plant’s production resources • In other words, the use of computer system in non-design activities but in manufacturing process is called CAM Types Of Manufacturing system  Mass production system  Batch production system  Job shop  Project 7/4/2016prof. Chirag Patel, PSE -surat 2
  3. 3. Evolution Of CAM • The roots of CAD/CAM trail back to the beginning of civilization, when the engineers of the ancient civilizations such as Egyptians, Greeks and Romans acknowledged the importance of the graphical communication. • Later on, Leonardo Da Vinci developed technics, such as cross-hatching and isometric views • The invention of computers and xerography made possible the creation of graphics and visualization (1991) • In the early 1950s, shortly after the World War II, the need for complex parts led to the invention of the Numerical Control (NC) that substituted the requirements for skilled human machine operators (Chang et al. 2006) • At the same time another invention, namely the digital computer, assisted the development of NC and provided the means for the creation of robots, computer aided design (CAD), computer-aided manufacturing (CAM) and flexible manufacturing systems (FMS) 7/4/2016prof. Chirag Patel, PSE -surat 3
  4. 4. Benefit of CAM • The application of CAM in the production offers advantages to a company to develop capabilities by combining traditional economies of scale with economies of scope resulting in the desired flexibility and efficiency • Greater supervision of the production • Fast response to changes in market demand • Greater flexibility • Product variety • Small lot-sizes • Distributed processing capability • Reduced waste 7/4/2016prof. Chirag Patel, PSE -surat 4
  5. 5. TECHNOLOGIES RELATED TO CAM There are several constituent technologies in (CAM). Some of them are: • (i) Computer Numerical Control • (ii) CAM software • (iii) Robotics • (iv) Flexible manufacturing • (v) Computer Aided Process Planning • (vi) Enterprise resource planning • (vii) Product life cycle management 7/4/2016prof. Chirag Patel, PSE -surat 5
  6. 6. Computer integrated Manufacturing - Introduction WHAT IS COMPUTER INTEGRATED MANUFACTURING (CIM)  The term CIM comprises three words – computer, integrated and manufacturing. CIM is the application of computers in manufacturing in an integrated way.  CIM is an attempt to combine computer technologies in order to manage and control the entire business and manufacturing.  CIM is the computerization of design, manufacturing, distribution and financial/business function into one coherent system. 7/4/2016prof. Chirag Patel, PSE -surat 6
  7. 7. Computer integrated Manufacturing - Introduction Definition CIM is complete integration an automation of all function of factory i.e. design ,manufacturing planning and control, manufacturing and business function Evolution of CIM • Concept of CIM has been involved since 1970,and starting devoting as a technology since 1980 . • With globalization of economy ,manufacturing industries starting cometing with each other all over the world • This has transformed market from seller driven to buyer driven and customer occupied in the center stage . • The customer demanding more product variety ,better product Quality and low cost product. • This has to led emergence of CIM 7/4/2016prof. Chirag Patel, PSE -surat 7
  8. 8. Computer aided Manufacturing - Introduction Factor affected to the development of CIM  Development and advancement of CNC,FMS and automation technologies.  Development of cost –effective and high speed computer system  Market Challenger - high labor cost, global computation ,buyer driven market  Customer demands – product variety ,better product Quality and law cost product 7/4/2016prof. Chirag Patel, PSE -surat 8
  9. 9. Concept and Scope of CIM • CIM system Applied B computer and communication technology to completely integrated and automate for following four factore  Design  Manufacturing planning and control  Manufacturing  Business Functions  CIM and CAD/CAM are very closely related but scope of CIM is Broder then CAD/CAM  CAD/CAM covers only all Function Of factory Operation where CIM covers Business Function in Addition . 7/4/2016prof. Chirag Patel, PSE -surat 9
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  11. 11. CASA/SME’s CIM wheel 7/4/2016 11prof. Chirag Patel, PSE -surat
  12. 12. Is CIM a concept or a technology? CIM is both a concept and a technology. For, top management, CIM is a concept, a blueprint for success. For, middle management and line managers, CIM is a technology, a physical realization of resources that are more capable and flexible. - Kant Vajpayee and Reiden 7/4/2016 12prof. Chirag Patel, PSE -surat
  13. 13. Historical review of CIM • 1909 – Ford’s concepts of Production lines were used • 1923 – Automatic transfer lines were introduced. • 1952 – Generation of punched paper tapes • 1954 – First NC Milling machine used. • 1959 – application of control using digital computer • 1960 – First NC Control Unimate Robot was installed. • 1963 – Sketchpad usage • 1965 – International business machines developed. • 1973 – CNC – DNC Concepts developed • 1980 - Concept of FMS established. 7/4/2016 13prof. Chirag Patel, PSE -surat
  14. 14. WHY CIM? • To meet Competitive pressures. • To coordinate and Organize data. • To eliminate paper and cost associated with its use. • To automate communication within a factory • To facilitate simultaneous engineering. 7/4/2016 14prof. Chirag Patel, PSE -surat
  15. 15. Objectives of CIM The main aim of CIM is to use the advanced information processing technology into all areas of manufacturing industry  More productive and efficient  Increase product reliability  Decrease the cost of production and maintenance  Reduces the number of hazardous jobs 7/4/2016 15prof. Chirag Patel, PSE -surat
  16. 16. CIM I VS CIM II CIM I – COMPUTER INTERFACED MANUFACTURING aimed at interfacing the existing systems result of the fourth generation of computers (data interfacing) CIM II – COMPUTER INTEGRATED MANUFACTURING the integration of total manufacturing enterprises through the use of integrated systems and data communications result of the fifth generation of computers (networking) finally, CIM II is a true CIM which means at true integration of systems 7/4/2016 16prof. Chirag Patel, PSE -surat
  17. 17. Computerized Elements of CIM system 7/4/2016 17prof. Chirag Patel, PSE -surat
  18. 18. Impact of CIM on Personal • CIM has Affected all the company personnel from the lowest rank oprator to the CEO of a company • The Impact of CIM on the workforce is more then that on the technology itself Implementation Of CIM on Personnel  Downsizing of workforce  Requinto of change in skill set  Specialist Need to generalize and Generalize Need to Special  Culture change in management 7/4/2016prof. Chirag Patel, PSE -surat 18
  19. 19. Role of Manufacturing Engineers in CIM • Manufacturing Engineer is Versatile in Nature • Due to continuous upgrade and modification manufacturing engineer must be closely interact with design engineer . • Manufacturing Engineer Need to understand design process, especially CAD Tool • Manufacturing Engineer must be developed certain degree of experty in the area of maintained of their own Machine . • Manufacturing Engineer must understand the various system machine tool like hydraulic system, pneumatic systems, electrical systems, and computer system. 7/4/2016prof. Chirag Patel, PSE -surat 19
  20. 20. Role Of Management • Development of business model for factory to understand the problem • Develop a Functional model for the processes, function and activities • Develop an information model for system interfaces , database ,information Exchange ,etc • Develop a network model for communication and networking • Develop an organizational model for integrating various island of automation • Develop the implementation plan which takes into account special features of the business and operation . 7/4/2016prof. Chirag Patel, PSE -surat 20
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