Nothing Special   »   [go: up one dir, main page]
Scribd Logo
Upload

Welcome to Scribd!

  • 52 views

    Computer-Integrated Manufacturing: From Wikipedia, The Free Encyclopedia

    Uploaded by

    Durga Sankar
    Computer-integrated manufacturing (CIM) is an approach to manufacturing that uses computers to control the entire production process. This integration allows individual manufacturing processes to exchange information and initiate actions in a more automated way. The main advantages of CIM are that manufacturing can be faster, less error-prone, and more automated. CIM relies on closed-loop control processes based on real-time input from sensors.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as DOCX, PDF, TXT or read online from Scribd

    Computer-Integrated Manufacturing: From Wikipedia, The Free Encyclopedia

    Uploaded by

    Durga Sankar
    52 views4 pages
    Computer-integrated manufacturing (CIM) is an approach to manufacturing that uses computers to control the entire production process. This integration allows individual manufacturing processes to exchange information and initiate actions in a more automated way. The main advantages of CIM are that manufacturing can be faster, less error-prone, and more automated. CIM relies on closed-loop control processes based on real-time input from sensors.

    Original Description:

    Original Title

    cim

    Copyright

    © Attribution Non-Commercial (BY-NC)

    Available Formats

    DOCX, PDF, TXT or read online from Scribd

    Did you find this document useful?

    Is this content inappropriate?

    Computer-integrated manufacturing (CIM) is an approach to manufacturing that uses computers to control the entire production process. This integration allows individual manufacturing processes to exchange information and initiate actions in a more automated way. The main advantages of CIM are that manufacturing can be faster, less error-prone, and more automated. CIM relies on closed-loop control processes based on real-time input from sensors.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    52 views4 pages

    Computer-Integrated Manufacturing: From Wikipedia, The Free Encyclopedia

    Uploaded by

    Durga Sankar
    Computer-integrated manufacturing (CIM) is an approach to manufacturing that uses computers to control the entire production process. This integration allows individual manufacturing processes to exchange information and initiate actions in a more automated way. The main advantages of CIM are that manufacturing can be faster, less error-prone, and more automated. CIM relies on closed-loop control processes based on real-time input from sensors.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    of 4

    Computer-integrated manufacturing

    From Wikipedia, the free encyclopedia


    Jump to: navigation, search

    Manufacturing Systems Integration Program, NIST 2008.


    This article needs additional citations for verification.
    Please help improve this article by adding reliable references. Unsourced material may be
    challenged and removed. (March 2010)

    Computer-integrated manufacturing (CIM) is the manufacturing approach of using


    computers to control the entire production process.[1][2] This integration allows individual
    processes to exchange information with each other and initiate actions. Through the
    integration of computers, manufacturing can be faster and less error-prone, although the main
    advantage is the ability to create automated manufacturing processes. Typically CIM relies
    on closed-loop control processes, based on real-time input from sensors. It is also known as
    flexible design and manufacturing.[citation needed]

    Contents
    [hide]

     1 Overview
     2 History
     3 Computer-integrated manufacturing topics
    o 3.1 Key challenges
    o 3.2 Subsystems in computer-integrated manufacturing
    o 3.3 CIMOSA
     4 Application
     5 See also
     6 References
     7 Further reading
     8 External links
    [edit] Overview
    The term "computer-integrated manufacturing" is both a method of manufacturing and the
    name of a computer-automated system in which individual engineering, production,
    marketing, and support functions of a manufacturing enterprise are organized. In a CIM
    system functional areas such as design, analysis, planning, purchasing, cost accounting,
    inventory control, and distribution are linked through the computer with factory floor
    functions such as materials handling and management, providing direct control and
    monitoring of all the operations.

    As a method of manufacturing, three components distinguish CIM from other manufacturing


    methodologies:

     Means for data storage, retrieval, manipulation and presentation;


     Mechanisms for sensing state and modifying processes;
     Algorithms for uniting the data processing component with the sensor/modification
    component.

    CIM is an example of the implementation of information and communication technologies


    (ICTs) in manufacturing.

    CIM implies that there are at least two computers exchanging information, e.g. the controller
    of an arm robot and a micro-controller of a CNC machine.

    Some factors involved when considering a CIM implementation are the production volume,
    the experience of the company or personnel to make the integration, the level of the
    integration into the product itself and the integration of the production processes. CIM is
    most useful where a high level of ICT is used in the company or facility, such as CAD/CAM
    systems, the availability of process planning and its data.

    [edit] History
    The idea of "digital manufacturing" was prominent the 1980s, when computer-integrated
    manufacturing was developed and promoted by machine tool manufacturers and the
    Computer and Automated Systems Association and Society of Manufacturing Engineers
    (CASA/SME).

    "CIM is the integration of total manufacturing enterprise by using integrated systems


    and data communication coupled with new managerial philosophies that improve
    organizational and personnel efficiency." ERHUM

    [edit] Computer-integrated manufacturing topics


    [edit] Key challenges

    There are three major challenges to development of a smoothly operating computer-


    integrated manufacturing system:
     Integration of components from different suppliers: When different machines, such as
    CNC, conveyors and robots, are using different communications protocols. In the case
    of AGVs, even differing lengths of time for charging the batteries may cause
    problems.

     Data integrity: The higher the degree of automation, the more critical is the integrity
    of the data used to control the machines. While the CIM system saves on labor of
    operating the machines, it requires extra human labor in ensuring that there are proper
    safeguards for the data signals that are used to control the machines.

     Process control: Computers may be used to assist the human operators of the
    manufacturing facility, but there must always be a competent engineer on hand to
    handle circumstances which could not be foreseen by the designers of the control
    software.

    [edit] Subsystems in computer-integrated manufacturing

    A computer-integrated manufacturing system is not the same as a "lights-out" factory, which


    would run completely independent of human intervention, although it is a big step in that
    direction. Part of the system involves flexible manufacturing, where the factory can be
    quickly modified to produce different products, or where the volume of products can be
    changed quickly with the aid of computers. Some or all of the following subsystems may be
    found in a CIM operation:

    Computer-aided techniques:

     CAD (computer-aided design)


     CAE (computer-aided engineering)
     CAM (computer-aided manufacturing)
     CAPP (computer-aided process planning)
     CAQ (computer-aided quality assurance)
     PPC (production planning and control)
     ERP (enterprise resource planning)
     A business system integrated by a common database.

    Devices and equipment required:

     CNC, Computer numerical controlled machine tools


     DNC, Direct numerical control machine tools
     PLCs, Programmable logic controllers
     Robotics
     Computers
     Software
     Controllers
     Networks
     Interfacing
     Monitoring equipment
    Technologies:

     FMS, (flexible manufacturing system)


     ASRS, automated storage and retrieval system
     AGV, automated guided vehicle
     Robotics
     Automated conveyance systems

    Others:

     Lean manufacturing

    [edit] CIMOSA

    CIMOSA (Computer Integrated Manufacturing Open System Architecture), is a 1990s


    European proposal for an open system architecture for CIM developed by the AMICE
    Consortium as a series of ESPRIT projects.[3][4] The goal of CIMOSA was "to help companies
    to manage change and integrate their facilities and operations to face world wide competition.
    It provides a consistent architectural framework for both enterprise modeling and enterprise
    integration as required in CIM environments".[5]

    CIMOSA provides a solution for business integration with four types of products:[6]

     The CIMOSA Enterprise Modeling Framework, which provides a reference


    architecture for enterprise architecture
     CIMOSA IIS, a standard for physical and application integration.
     CIMOSA Systems Life Cycle, is a life cycle model for CIM development and
    deployment.
     Inputs to standardization, basics for international standard development.

    CIMOSA according to Vernadat (1996), coined the term business process and introduced the
    process-based approach for integrated enterprise modeling based on a cross-boundaries
    approach, which opposed to traditional function or activity-based approaches. With CIMOSA
    also the concept of an "Open System Architecture" (OSA) for CIM was introduced, which
    was designed to be vendor-independent, and constructed with standardised CIM modules.
    Here to the OSA is "described in terms of their function, information, resource, and
    organizational aspects. This should be designed with structured engineering methods and
    made operational in a modular and evolutionary architecture for operational use".[5]

    [edit] Application
    There are multiple areas of usage:

     In mechanical engineering
     In electronic design automation (printed circuit board (PCB) and integrated circuit
    design data for manufacturing

    You might also like