Subject Title                           : Computer Integrated Manufacturing      
Subject Code                         :          
Hours Per Week                    :           04
Hours Per Semester              :           64


Major Topics
Hours Allotted
Weightage of Marks
                                                            PART - A
Introduction to CIM & Automation
Fundamentals of CAD
Introduction to CNC
                                                            PART – B
Structure of  CNC machines

Programming of CNC machines

                                                            PART – C
Computer Aided manufacturing
Environmental concern and Industry Innovations
Tests & Revisions


General educational objectives

On completion of the course, the students should be able to:
  1. Understand the basic concepts of CIM and Automation
  2. Know the fundamentals of CAD system
  3. Know the concept of NC and CNC
  4. Understand the basic structure of CNC machines and its components
  5. Understand the programming concepts of CNC machines
  6. Know the fundamentals of CAM
  7. Understand the concept of Robotics and appreciate its role in Industry

Content details:

1. Introduction of CIM and Automation
    1.1 Product Cycle and CAD/CAM – Basic concepts and definitions
    1.2 CIM – definition, scope and elements of a CIM system
    1.3 Automation – definition and elements of an automated system
    1.4 Types of automation and levels of automation
    1.5 Reasons for Automation (benefits)

2. Fundamental of CAD
  2.1 Product design – steps involved in manual design
  2.2 Application of computers in design
  2.3 Creation of manufacturing database
  2.4 CAD system hardware – design workstation, plotters & printers and storage devices
  2.5 Benefits of CAD

3   Introduction of CNC
   3.1 NC – definition
   3.2 Basic components of an NC system
   3.3 Applications of NC – Machining applications and non-machining applications
   3.3 Motion control systems – PTP and continuous path systems
   3.4 CNC – definition and features
   3.5 Distributed numerical control (DNC)
   3.6 Machining Centers – definition, features and classification

4  Structure of CNC machines
   4.1  Machine structure – static, dynamic and thermal loads
   4.2  Guide ways – different types
   4.3 Drives in CNC – Feed drives, Spindle drives and their requirements
   4.4 Motors – servo motors, servo principle  and stepper motors
   4.5 Mechanical transmission system – Ball screws, rack & pinion, gear box, timing belts and  
         Flexible couplings.
   4.6 Spindle bearings – hydrostatic, hydrodynamic and Antifriction bearings
   4.7 Measuring systems – types, Rotary encoder and linear scales
   4.8 Controls, software and user interface
   4.9 Gauging and tool monitoring
   4.10 Compensations for machine accuracy

5   Programming of CNC machines
   5.1 Introduction to programming
   5.2 Types of dimensioning
   5.3 Axis and motion nomenclature
   5.5 Structure of part program – word addressed format
   5.6 Preparatory and miscellaneous functions
   5.7 Subroutines
   5.8 Canned cycles
   5.9 Simple programs on turning, milling and drilling
         (To be taught in detail in CNC programming Lab)

6 Computer aided manufacturing
  6.1 CAM – definition and categories of CAM
  6.2 Components of a Manufacturing system
  6.2 Group technology – definition, part family, part classification and coding (opitz system)
  6.3 Applications and benefits of GT
  6.4 Cellular manufacturing – concept and definition, types of machine cells
  6.5 Flexible manufacturing system – definition, types, components and Applications
  6.6 Computer aided process planning – retrieval type CAPP and Generative CAPP

7   Robotics
   7.1  Introduction, definition and importance of robots
   7.2 Robot Anatomy – joints and links, physical configuration
   7.3  Basic robot motions – degrees of freedom
   7.4 End effectors – grippers and tools
   7.5 Programming of Robots
   7.6 Applications of robots.

Specific instructional objectives

  1. Understand the basic concepts of CIM and Automation
1.1  Explain the steps involved in product cycle
1.2  Define CAD, CAM and discuss the role of computers in product cycle
1.3  Define CIM and discuss the scope of CIM with respect to CAD/CAM
1.4  Explain the elements of a CIM system
1.5  Define Automation elements of an automated system
1.6  Explain the types of automation, levels of automation and reasons for automation

  1. Know the fundamentals of CAD system
2.1  Explain the steps involved in manual design process
2.2  Give the block diagram indicating relation between manual design and CAD
2.3  Discuss the applications of computers in design
2.3.1        Geometric modeling
2.3.2        Engineering analysis
2.3.3        Design review and Evaluation
2.3.4        Automated drafting
2.4  Give the block diagram of common database created for CAD and CAM
2.5  Discuss the CAD system hardware – design workstation, plotters and printers and storage devices.
2.6  Discuss the benefits of CAD

3        Know the concept of NC and CNC
3.1  Define NC and explain the basic components of NC
3.2  Discuss the applications of NC in two areas i.e., machining and non-machining areas
3.3  Explain the motion control systems of NC i.e., PTP systems and continuous path control systems
3.4  Define CNC and give the difference between NC and CNC
3.5  Explain the features of CNC
3.6  Discuss the distributed numerical control (DNC)  with a block diagram
3.7  Define machining centers and discuss  the features of machining centers
3.8  Discuss the classification of machining centers.

  1. Understand the basic structure of CNC machines and its components
4.1  List the basic design factors of machine structure
4.2  Explain static, dynamic and thermal loads on the machine structure
4.3  Mention the use of guideways in machine tools
4.4  Explain frictional guideways with stick-slip phenomenon
4.5  Explain other types of guideways like Flat, dovetail, Vee and cylindrical type
4.6  Explain hydrostatic and Aerostatic guideways
4.7  Explain the role of drives in CNC machines
4.8  Explain the requirements of feed drives and spindle drives in CNC machines
4.9  Briefly explain the servo motor with its features and discuss servo-principle
4.10          Explain the stepper motors
4.11          Discuss the role of mechanical transmission system in CNC machines
4.12          Explain ball screws, rack & pinion, gear box, timing belts and flexible couplings
4.13          Discuss the importance of spindle bearings
4.14          Briefly explain hydrodynamic, hydrostatic and antifriction bearings
4.15          Discuss the role of measuring system and its types
4.16          Explain the working principle of rotary Encoder  and linear scale
4.17          Outline controls, software and user interface
4.18          Explain gauging and types of tool monitoring systems.
4.19          Explain the various compensations for machine accuracy

  1. Understand the programming concepts of CNC machines
5.1  Explain the factors to be considered while writing the  part program
5.2  Discuss the co-ordinate system and methods of dimensioning
5.3  Explain axes and motion nomenclature
5.4  Explain structure of part program with block example of word addressed format
5.5  Discuss commonly used preparatory and miscellaneous functions
5.6  Discuss the subroutine programming with an example
5.7  Discuss the concept of canned cycle  as applied to turning program
5.8  Write simple programs for turning, milling and drilling applications

  1. Know the fundamentals of CAM
6.1  Discuss the role of computers in manufacturing
6.2  Explain the two categories of CAM – manufacturing planning and manufacturing control
6.3  Explain manufacturing systems and give its components
6.4  Define Group technology. Explain part family and discuss opitz system of part classification and coding
6.5  Discuss the applications and benefits of GT
6.6  Explain cellular manufacturing and its objectives
6.7  Explain types of machine cells and layouts
6.7.1 Single machine cell
6.7.2 Group machine cell with manual handling
6.7.3 Group machine cell with semi-integrated handling
6.7.4 Flexible manufacturing cell
            6.8 Define Flexible manufacturing system
            6.9 Explain various components of FMS like workstations, material handling systems  
                 (AGV’s, AS/RS and robots), computer control system and human resources
            6.10 Explain different types of FMS
            6.11 Discuss the Applications of FMS
            6.12 Discuss computer aided process planning
            6.13 Explain Retrieval CAPP and Generative CAPP

  1. Understand the concept of Robotics and appreciate its role in Industry
7.1  Define Robots and Discuss the importance of robotics in industry
7.2  Explain Robot Anatomy
7.2.1        Explain various  joints
7.2.2        Explain different physical configurations
7.3  Explain the six degrees of freedom of a robot as applied to  arm and wrist
7.4  Explain the End effectors – various types of grippers and tools
7.5  Explain different methods of  programming of Robots
7.6  Mention the programming languages used in off-line programming
7.7  Discuss the applications of robots in industry.

Reference Books:
  1. Automation, production systems and Computer integrated manufacturing
-          Mikell P Groover  (PHI edition)
  1. CAD/ CAM
-          Mikell P Groover and Emory W. Zimmers
  1. Mechatronics
-          HMT
            - P N Rao

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