Microcomputer Applications in Manufacturing

Computer Applications in Engineering Education, 2009

The role of manufacturing enterprises in developing countries is more significant for economic prosperity than the developed countries since financial institutions are not well established. Today, the capability of producing high quality products with shorter delivery times and the ability to produce according to the diverse customer requirements have become the characteristics required for order-qualifiers for manufacturing industries. Computer Integrated Manufacturing (CIM) systems have become the backbone of modern manufacturing paradigm for not only being profitable but also staying in business at any corner of the world. In this respect academies play a prominent role to produce well equipped engineers being ready to take the challenge of maintaining and improving CIM systems. This paper is an effort to illustrate a prototype design and manufacturing project with necessary improvements in an educational CIM laboratory by addressing to the courses in the curriculum of Systems Engineering at Yeditepe University. Following to the insightful introduction to the laboratory facilities, the design, simulation and implementation of the prototype are presented. The results obtained are discussed from system engineering education perspective. ß

1996 Annual Conference Proceedings

An independent study project was developed to apply the principles of statistical process control (SPC) to polymer processing using a new microprocessor controlled injection molding machine, purchased through a 1994 Instrumentation and Laboratory Improvement (ILI) award from the National Science Foundation. The project began with a machine capability study and an investigation of the SPC package on the machine. An investigation of the repeatability of specimens produced included mass, length and thickness measurements. Following this, a simulation designed to vary the viscosity of the material being processed was undertaken, and the SPC methods and measurements previously defined were applied in order to determine which machine monitors were capable of detecting slight changes in viscosity typical of material contamination. The hydraulic pressure applied when the machine switched from filling to packing the mold cavity proved to be excellent in detecting changes in material viscosity within only a few machine cycles. Use of this SPC technique can therefore halt production of polymer parts leading to poor quality soon after material contamination-or any other process variation leading to a change in material viscosity-occurs.

1980

Manufacturing enterprises play an important role in improving the economic environment of a country, The economic environment of many developed countries is under threat from emerging industrialized countries. Today, the capability of producing high quality products with shorter delivery times and the ability to produce according to the diverse customer requirements have become the characteristics required of order-qualifiers for manufacturing industries, Hence. Application of intelligent manufacturing systems and computer integrated manufacturing (CIM) has become the necessity to overcome the above issues while retaining the employment level and revenue of a country in today's highly competitive global market. With the developments taking place in CIM and its related technologies, the application of CIM in manufacturing enterprises has become a reality, This paper focuses on latest research developments in CIM and a new CIM wheel proposed to satisfy the emerging technological ...

Computers in Industry, 1995

Computer Integrated Manufacturing, 1988

Credits for the design of the language go to all members of the χ-club. In particular, we would like to mention the following contributions. J.M. van de Mortel-Fronczak stood at the base of the language [vdMFR95]. N.W.A. Arends was the first to describe the formalism [Are96]. W. Alberts and G.A. Naumoski wrote the first compiler (χ0.3) [AN98]. A.T. Hofkamp wrote the real-time compiling system [Hof01] and the latest compiler (Chi 3). V. Bos and J.J.T. Kleijn helped in providing a formal framework for χ [BK00]. D.A. van Beek gave suggestions for improving the language. Finally, close cooperation of the Systems Engineering Group with the Parallel Programming Group (formerly lead by M. Rem) and the Formal Methods Group (lead by J.C. Baeten) has improved the quality of the language. In addition, we would like to thank all (former) students and (former) members of the Systems Engineering Group that have performed several projects involving the modelling and analysis of manufacturing systems using Chi in research and engineering environments. Regarding this book, we thank L.F.P. Etman for his contribution to Chapter 3 and for preparing a number of exercises. We thank E.J.J. van Campen for providing us with photographs of the Crolles2 waferfab.

1975

Absfracf-Currentlv. many manufacturing functions are automated through the use of computers and associated equipment. The support of ,administrative functions such as material and labor control to regulate costs and measure results is aided by the use of medium to large computers at the plant site or through communications to a central computer site. The control of processes, such as testing and assembly,. are improved through the use of mini-and microprocessors'as well as programmable controllers. The engineering problem solving and design now involve the use of hand-held and desktop calculators as well as time-shared and remote processing on a central computer. All of these things have but one basic goal: cost effective manufacturing.

Production Engineer, 1974

Computers & Industrial Engineering, 1986

The purpose of this paper is to present a system methodological approach to designing a computer based manufacturing subsystem. The subsystem, a manual Job costing system, is explained and a summary of design procedures for converting this manual system to a computer based information system is provided.