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Computer-integrated manufacturing (CIM) is the manufacturing approach of using computers to control the entire production process. This integration allows individual processes to exchange information with each other and initiate actions. Although manufacturing can be faster and less error-prone by the integration of computers, 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. Go to Article
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Computer-integrated manufacturing
Computer-integrated manufacturing
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Computer-integrated manufacturing (CIM) is the manufacturing approach of using computers to control the entire production process.
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<1><2> This integration allows individual processes to exchange information with each other and initiate actions. Although manufacturing can be faster and less error-prone by the integration of computers, 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.<3>
Contents
3 Topics
Overview
Computer-integrated manufacturing is used in automotive, aviation, space, and ship building industries.<4> 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:
Mechanisms for sensing state and modifying processes;
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 <<>>.
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.
History
The idea of “digital manufacturing” became prominent in the early 1970s, with the release of Dr. Joseph Harrington”s book, Computer Integrated Manufacturing.
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<5> However,it was not until 1984 when computer-integrated manufacturing began to be 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 In a literature research was shown that 37 different concepts of CIM were published, most of them from Germany and USA. In a timeline of the 37 publications it is possible to see how the CIM concept developed over time. Also it is quite markable how different the concepts of all publications are.<6>
Topics
Key challenges
There are three major challenges to development of a smoothly operating computer-integrated manufacturing system:
Subsystems
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:
A business system integrated by a common database.
Devices and equipment required:
Monitoring equipment
Technologies:
Automated conveyance systems
Others:
CIMOSA
CIMOSA (Computer Integrated Manufacturing Open System Architecture), is a 1990s European proposal for an open systems architecture for CIM developed by the AMICE Consortium as a series of ESPRIT projects.<8><9> 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”.<10>
CIMOSA provides a solution for business integration with four types of products:<11>
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.
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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”.<10>
Application
There are multiple areas of usage:
See also
Computer-aided manufacturingDelcamMastercamSiemens NXDigital modeling and fabricationManufacturingInternet
This article uses material from the Wikipedia article “Computer-integrated manufacturing”, which is released under the Creative Commons Attribution-Share-Alike License 3.0. There is a list of all authors in Wikipedia
