Computer Integration Engineering Design and Production A National Opportunity (1984) / Chapter Skim
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Pages 14-25
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From page 14... ...
There are, of course, other companies that have been leaders in the use of CIM, but the experience of these five companies covers a variety of products, company sizes, and corporate styles. The Committee also met with the managers of the three major government programs that relate to computer-integrated manufacturing: the NASA/Navy Integrated Program for Aerospace Vehicle Design (IPAD)
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From page 15... ...
INCENTIVES FOR COMPUTER-INTEGRATED MANUFACTURING Each company visited viewed its business from both global and domes tic perspectives and considered integration technology a primary need for supporting its business strategy. They all cited competition from foreign nations and a need to improve responsiveness to meet worldwide demand as a major strategic issue and incentive for CIM.
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From page 16... ...
Justification of CAD/CAM Integration The companies visited generally had started their CAD/CAM activities in at least two separate areas. Automation of the engineering design process often began with computer-aided drafting and progressed to computer-aided design and analysis, while automation in production typically began with numerically controlled machines and evolved to computer-aided production facilities.
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From page 17... ...
Further benefits are expected to accrue as full integration is approached. Benefits Achieved Reduction in engineering design cost Reduction in overall lead time Increased product quality as measured by yield of acceptable product Increased capability of engineers as measured by extent and depth of analysis in same or less time than previously Increased productivity of production operations (complete assemblies)
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From page 18... ...
During the 20 to 30 years that these companies have been building the infrastructure for computer integration, they have learned a number of important lessons. Significant progress required the total commitment of strong technical staff and management teams.
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From page 19... ...
Companies starting computer integration today can learn from the experience of the pioneers. The Air Force ICAM program has outlined key steps2 for successful implementation of a CAD/CAM system at minimum cost.
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From page 20... ...
Rather, IPAD addresses engineering design, ICAM addresses the architecture of manufacturing and the control of production, and the AMRF assists medium-sized and other companies to use shop-floor automation. Federal technology programs tend to be reasonably applicable to many companies and therefore exactly applicable to none.
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From page 21... ...
The preliminary sys tem des ign focused on a dis tributed, heterogeneous machine environment in which data base management technology and networks played critical roles in the total solution. In 1978, NASA decided to concentrate IPAD resources on two areas: data management and networking between heterogeneous machines.
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From page 22... ...
Advanced manufacturing technologies in numerical control, robotics, automated process planning, and inspection, and their integration into a cohesive system, are practically impossible if the product cannot be defined by digital data that can directly feed these processes. serve the function of the conventional engineer The Initial Graphics Exchange Specification
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From page 23... ...
To these ends, the project will: · analyze needs for product definition data in manufacturing, using sample aerospace parts · define an automated framework for a Product Definition Data Interface · develop a data format and utilities required to support the PDDI · prove the concept of the PDDI through demonstration of the utility software The PDDI prototype system is intended to serve as the information interface between engineering and all manufacturing functions that use today's blueprint, including process planning, numerical control (NC) programming, quality assurance, and tool design.
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From page 24... ...
24 Figure 2 o ._ ._ _ ._ 3 0 ~ e _ ' co y E an .....
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From page 25... ...
John A Simpson et al, "The Automated Manufacturing Research Facility of the National Bureau of Standards," Journal of Manufacturing_Systems (vol.
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