Showing papers in "Computer Integrated Manufacturing Systems in 1993"

TL;DR: In this paper, a method and process for computer-controlled manufacture of three-dimensional objects is described, which involves dispensing a layer of a first material, such as a liquid, insoluble material onto a platform at predetermined locations corresponding to a cross-section of the object, which then hardens.

TL;DR: A computer-based engineering design system to design a part, a tool to make the part, and the process to making the part by accessing the plurality of feature templates in the memory to locate one or more primitive objects that perform the oneor more predetermined functions.

TL;DR: An integrated automation development system for controlling and coordinating manufacturing equipment employs a plurality of server processes that may include additional commands that enable them to serve as queue servers, terminal servers, and other application-specific server processes.

TL;DR: In this article, a computer integrated event management system is described that coordinates the entire process of event planning and implementation using specialized software combined with a microcomputer network which includes a network file server, CAD/DATA station and DATA stations where facility personnel are able to efficiently plan and implement events.

TL;DR: The system also includes the capability of executing the control code sequences in a simulation mode before actual execution to assure proper action at execution time and the programming and control of multiple arms and the use of inward/outward spatial recursions.

TL;DR: An information system architecture is developed that is capable of supporting heterarchical shopfloor control in large FMSs and identifies the information content of messages that are transmitted between autonomous manufacturing system entities under this control paradigm.

TL;DR: In this article, a pickup system comprising a robot having a gripping member fitted with a camera for acquiring an image of the object to be picked up, which image is supplied to a control section by which it is processed for determining a predetermined point, typically the center, of an object by generating shifted inverted images of the objects and intersecting the shifted inverted image and the original image.

TL;DR: A programmable controller is disclosed that incorporates a sequence control program adapted to input and output information to a variety of local intelligent appliances at a high velocity and a high efficiency in the field of factory automation for efficiently controlling factory production lines or theField of process automation for controlling multiple industrial processes.

TL;DR: Adaptive control of a system with a human in the loop is accomplished by sensing human operator reactions to a disturbance in the system and characterizing the operator response to the disturbance as discussed by the authors. But the human response is characterized in one of several forms by predicting a response based on a model quantifying a response on statistics or merely measuring a response for accumulation of data to be employed by an artificial intelligent system.

TL;DR: In this paper, a workcell for making parts from rigid sheet material capable of self-support on edge includes a plurality of CNC machines for performing machining operations on said sheet material in a vertical orientation.

TL;DR: In this article, a new production management methodology is proposed to handle difficult economic periods through robust planning, and to track markets in equilibrium through decentralized control, based on push and pull strategies.

TL;DR: In this paper, a robot body or machine tool is divided into a plurality of independent elements, and the motion of each element, when a force corresponding to a basic motion of a human being is exerted thereon, is calculated using dynamics.

TL;DR: An heuristic approach to reduce set-up time in printed circuit board assembly is given, and a single insertion/ placement machine is considered, and set up time is taken as directly proportional to the number of component replacements.

TL;DR: In this article, a system and method for computer controlled flexible manufacturing of aluminum articles having patterns thereon is disclosed, where the pattern is digitized or otherwise reduced to computerreadable format and then printed onto an aluminum article under computer control.

TL;DR: In this paper, a method of animation plotting by an NC machining program on an NC lathe having a multiplicity of tool rests is presented, which provides animation plotting for Y-axis machining such as engraving.

TL;DR: In this paper, the IDIP (Integrated Distributed Intelligent Platform) based on the meta-system is introduced, and several on-going research projects to illustrate how to implement CIMS in continuous manufacturing processes.

TL;DR: In this paper, a methodology and a set of tools that allow a manufacturing engineer to integrate programable work cells such as FMCs and FACs into an FMS that can be reprogrammed easily for the inclusion of additional products, thus making small and medium-size production runs economical.

TL;DR: In this article, the authors argue that self-referential systems based on independently communicating agents are both more flexible and more acceptable in practice than traditional FMS architectures, and they propose five partial, complementary solutions which together should improve the inherent flexibility of future software systems: (1) global information services, (2) highlevel standardization such that only the standards actually needed are generated, (3) distributed agent heterarchical architectures, (4) dynamic updating of configuration-oriented software, and (5) computational reflection.

TL;DR: In this article, the authors propose extensions to the Timed Petri nets method, and present an hierarchical modelling and simulation methodology to address design and control issues such as the number of vehicles required, machine scheduling, AGV dispatching, etc., of an AGV-based FMS.

TL;DR: A numerical control apparatus for controlling a cutting machine for cutting a workpiece according to a predetermined tool path wherein the tool path is defined relative to a coordinate system by a cutting program.

TL;DR: Petri net-based formal models for discrete production processes are established that analytically describe the system structure and dynamics and provide a uniform method of control strategy synthesis for such systems.

TL;DR: In this paper, a conceptual data model is first developed using entity-relationship diagrams (ERD), and the database is then implemented from a relational data model by a database management system.

TL;DR: In this article, the authors compare different forms of work organizations with CNC machine tools and distinguish between centralistic and shop-floor-oriented strategies, and find that the reasons for alternative work organization can be found first in technical and economic factors, and second, the type of work organization selected by firms for the use of CNC machines is to a large extent determined by social and political factors.

TL;DR: The concept of the ‘first generation reachability graph’ is introduced, and a methodology for QA developed, and the PROjection-based State Space ANalyser (PRO-SPAN), a software package designed to automate the analysis methods developed in this paper, is presented.

TL;DR: In this paper, the authors present a relatively simple and practical risk analysis procedure accompanied by an application example, which employs the proven Analytical Hierarchy Process (AHP) coupled with confidence intervals from data gathered through simulation techniques or through observations and empirical sampling.

TL;DR: This paper discusses the problem, referring to an example plant and considering a simulated environment the XIM-SIFIP code, that fully describes the dynamic behaviour of multiprocess manufacturing, giving a powerful aid for collecting and comparing the capabilities added by adaptive scheduling.

TL;DR: This research examines the problem of providing decision support for the transition from a traditional push production system to a pull system design and proposes a decision support system framework which gives guidelines for development of software employing these methods.

TL;DR: In this paper, a synthesis of FMS control design is presented, and an exhaustive description of the functionalities needed for an overall FMS controller is given, including how do the different functions cooperate, how are they interrelated, and what are the limits between them.