CIRP Annals Online sorted by Year and Volume
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CIRP ANNALS 1991
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STC A |
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Modeling and Simulation of Assembly Systems
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H.P. Wiendahl (1), R. Garlichs, K. Zeugtraeger
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STC A, 40/2/1991, P.577
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Keywords: Assembly Ststems, Modeling, Simulation, Objectives |
Abstract : The development and use of simulation tools in the field of assembly
planning is growing over the last years. The following paper presents
the results of these efforts and is an overview of the state of the art
in modeling and simulation of assembly systems. According to the
different objectives of the different efforts in simulation the
developed tools are divided into the four hierarchy classes assembly
shop, cell, station and component. For every level the considered goals
and the used models will be explained. Furthermore the realization of
assembly systems and the results of these systems will be discussed.
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STC C |
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Ultraprecision Metal Cutting, the Past, the Present and the Future
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N. Ikawa (1), R.R. Donaldson (1), R. Komanduri (1), W. Koenig (1), P.A. McKeown (1), T. Moriwaki (2), I.F. Stowers
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STC C, 40/2/1991, P.587
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Keywords: Metal Cutting, Ultraprecision Machining |
Abstract : A review is made of ultraprecision metal cutting techniques which aim at
micrometer or sub255micrometer form accuracy and nanometric surface
roughness in optical, electronic and mechanical components, Following an
overview of the fields of application of the technique in advanced
science and technology, a brief look is taken at the technical bases of
machine tools, metrology and control, cutting tools and relevant
technologies, Some physical aspects of the chip removal process and
related phenomena involved in micro cutting are also discussed for
better under255standing, controlling and improving the technique.
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STC Dn |
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Engineering Design Education
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J. Dinsdale (1)
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STC Dn, 40/2/1991, P.595
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Keywords: Engineering Design, Design Education |
Abstract : This Keynote Paper describes some of the many current viewpoints
regarding engineering design and how it should be taught, distinguishing
between the different approaches to design: the analytical approaches
now being developed by researchers and the practical intuitive
approaches used and favoured by practising designers. The paper
describes briefly the present-day thinking on design theory and design
methodology, and collates proposals from a number of sources regarding
the optimum way of teaching engineering design.
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STC E |
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Material Incress Manufacturing by Rapid Prototyping Techniques
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J.P. Kruth (2)
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STC E, 40/2/1991, P.603
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Keywords: Manufacturing, Material Incress Manufacturing Rapid Prototyping, CIM |
Abstract : The paper gives a state-of-the-art overview: of so called rapid
prototyping techniques, like stereolithography, selective laser
sintering, particle manufacturing and others. These are new
manufacturing techniques in which the part is produced by gradually
growing material to the required shape. tentative classification and
nomenclature is proposed. It is shown that those new processes are
ideally suited for CIM. The paper tries to compare the different
processes and discuss their application and performances.
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STC F |
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Developments in Automation, Flexibilization and Control of Forming Machinery
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D. Schmoeckel (1)
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STC F, 40/2/1991, P.615
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Keywords: Automation, Flexibility, Control |
Abstract : The development of forming machinery can be represented in five steps.
All of these steps reflect the respective economic re255quirements and
their technical implementation. In the area of mass production,
automation was in the foreground for achieving increased productivity.
It was type-related and thus inflexible. In recent years, changing
market conditions have strengthened the trend for flexibili255zation of
the machinery, at first with the objective of improving both steps
flexibility and production run flexibility. The focal point of
deve255lopment was on machines for application in non-tool-related forming
processes. More recent developments are aimed at improving also the
process flexibility of tool-related forming techniques. Under the
aspects of process and quality assurance, machines are being deve255loped
which allow control and regulation of the forming process. Some examples
are given to describe the state of development.
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STC G |
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Environmental Aspects of Grinding Fluids
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T.D. Howes (2), H.K. Toenshoff (1), W. Heuer
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STC G, 40/2/1991, P.623
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Keywords: Grinding, Fluid |
Abstract : Internationally, environmental concerns, public opinion, and government
regulation have initiated extensive controls on the use and disposal of
industrial products including grinding fluids. As a result, waste
disposal costs have increased as has manufacturer liability for the
effect of wastes upon the environment and for the impact of
manufacturing processes upon worker health. In the case of grinding
fluids, these trends have resulted in an emphasis on fluid maintenance
in order to minimize the amount of waste generated, to extend the life
of the fluid, and to mitigate negative effects on worker health. The
concept of fluid management encompasses fluid selection, maintenance of
fluid concentration and emulsion stability, control of microbial levels,
and removal of impurities. Upon failure, used fluids must be treated
either to reduce toxicity or to render them suitable for recycling.
Although techniques and equipment have been developed for fluid
maintenance and waste disposal, more research is warranted accurately to
determine the extent and forms of the impact of grinding fluids on the
environment, given that government regulation shall become increasingly
stringent and that the impact upon manufacturing processes promises to
be far reaching.
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STC O |
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Tool Management : the Present and the Future
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W. Eversheim (1), H.J.J. Kals (1), W. Koenig (1), C.A. Van Luttervelt (1), J. Milberg (1), A. Storr, H.K. Toenshoff (1), M. Weck (1), H. Weule (1), W.J. Zdeblick (2)
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STC O, 40/2/1991, P.631
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Keywords: Cutting, Machine Tool, Optimization, Tool Management |
Abstract : Availability of tools is of prime importance for uninterrupted
production in a highly automated manufacturing environment. Even in
relatively small machining shops a great variety of tools is required.
Many industrial firms, suppliers of cutting tools, research
organizations, industrial consultants and software houses have
contributed to an optimization of tool use. These efforts were aimed at
simplifying tool management. To determine the goals and areas for future
research work in tool management, the authors of this contribution
attempt to describe and evaluate the present situation and to point out
some future trends.
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