Computer Integrated Manufacturing

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Computer Integrated Manufacturing
Lecture notes in

• Instructor Dr. Nguyen Van Hop

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Chapter 1 Introduction

• Agenda
• An Overview of a Manufacturing Enterprise
• Design and Manufacturing
• Systems Approach to Computer-Integrated Design
  and Manufacturing

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Manufacturing Enterprise

• The production system is the collection of
  people, equipment and procedures organized to
  accomplish the manufacturing operations of a
  company
• The production system consists of two components
• Facilities factory, equipments, tools, control
  systems
• Manufacturing support systems people and
  procedures by which a company manages its
  production operations
• CIM denotes the pervasive use of computer systems
  to design products, plan the production, control
  the operations, and perform various
  business-related functions needed in a
  manufacturing firm
• Elements of CIM CAD, CAM, CAE, MRP, etc.

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Customer and Manufacturing Enterprise
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Design The Development of CAD
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History of Manufacturing
Mass
Lean
Flexible
Reconfigurable
2000
1913
1960
1980
Responsiveness
Objectives
Variety
Quality
Scientific Knowledge
Computers
Cost
Operations Management
Enablers
Interchangeable parts
Exactly the capacity functionality needed,
exactly when needed
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• Manufacturing is the application of physical and
  chemical processes to alter the geometry,
  properties, and/or appearance of a given starting
  material to make parts or products manufacturing
  also includes assembly of multiple parts to make
  products
• Manufacturing is almost always carried out as a
  sequence of operations

Manufacturing as a technical process
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• Manufacturing is the transformation of materials
  into items of greater value by means of one or
  more processing and/or assembly operations
• Manufacturing adds value to the material by
  changing its shape or properties, or by combining
  it with other materials that have been similarly
  altered

Manufacturing as an economic process
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Manufacturing Processes

• Two basic types
• Processing operations - transform a work material
  from one state of completion to a more advanced
  state
• Operations that change the geometry, properties,
  or appearance of the starting material
• 2. Assembly operations - join two or more
  components in order to create a new entity

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• Casting for metals

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Mechanical Assembly

• Typical assemblies when screws and bolts are used

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The Development of Manufacturing Technology

• NC machines NC ?DNC ? CNC
• Material-handling systems AS/RS, AGVs
• Robotics
• Computer control Systems computer network (LAN,
  WAN), bar code system, PLCs
• FMSs
• Other significant supporting technologies,
  Taguchi method, MRP, GT, CM, JIT

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Systems Approach to Computer-Integrated Design
and Manufacturing

• Product life cycle approach
• A logical framework for understanding and
  analysis
• Reduction in cost and lead time
• Improve product quality
• The product life cycle design ?manufacturing ?
  product usage ? disposal

Cost incurred and committed during product life
cycle