CA-Techniken und CIM

Der Arbeitsbericht gibt zunächst einen Überblick über die technisch orientierten rechnergestützten Komponenten im Rahmen des Computer Integrated Manufacturing (CIM), die sogenannten CAx-Systeme oder CA-Systeme: CAD (Computer Aided Design) CAP (Computer Aided Planning) CAM (Computer Aided Manufacturing) CAQ (Computer Aided Quality Assurance) CAI (Computer Aided Instruction). Er geht dann auf Schnittstellen der Teilsysteme untereinander und auf Schnittstellen zu anderen, insbesondere zu betriebswirtschaftlich orientierten Anwendungssystemen ein. Ansätze und Probleme der Integration unterschiedlicher Softwaresysteme sowie die neuen Herausforderungen an die Betriebswirtschaftslehre und an den Betriebswirt beschließen den Beitrag

Space station models, mockups and simulators

Schematic outlines for space station models, mockups, and simulators are presented. The types of Boeing models, mockups, and simulators are given along with the classes and characteristics. The use of models in the 767 program is briefly given. Computerized human factors tools are outlined. The use of computer aided design and computer aided manufacturing in the approach for the space station is advocated

A common geometric data-base approach for computer-aided manufacturing of wind-tunnel models and theoretical aerodynamic analysis

A more automated process to produce wind tunnel models using existing facilities is discussed. A process was sought to more rapidly determine the aerodynamic characteristics of advanced aircraft configurations. Such aerodynamic characteristics are determined from theoretical analyses and wind tunnel tests of the configurations. Computers are used to perform the theoretical analyses, and a computer aided manufacturing system is used to fabricate the wind tunnel models. In the past a separate set of input data describing the aircraft geometry had to be generated for each process. This process establishes a common data base by enabling the computer aided manufacturing system to use, via a software interface, the geometric input data generated for the theoretical analysis. Thus, only one set of geometric data needs to be generated. Tests reveal that the process can reduce by several weeks the time needed to produce a wind tunnel model component. In addition, this process increases the similarity of the wind tunnel model to the mathematical model used by the theoretical aerodynamic analysis programs. Specifically, the wind tunnel model can be machined to within 0.008 in. of the original mathematical model. However, the software interface is highly complex and cumbersome to operate, making it unsuitable for routine use. The procurement of an independent computer aided design/computer aided manufacturing system with the capability to support both the theoretical analysis and the manufacturing tasks was recommended

The Effect of Using Computer Technology Tools to Enhance the Teaching-Learning Process in CAD-CAM-CNC Module in Mechanical Engineering Subject Area

This study presents the evaluation of Computer Assisted Learning (CAL) package included in the teaching and learning methodology of computer aided design- computer aided design - computer numerical control (CAD-CAM-CNC) module. Three groups of students with similar pre-abilities were exposed to three different teaching learning methodologies.The effectiveness of these three methods was determined by questionnaires completed by the students and collected by first author. Their answers were analysed quantitatively and qualitatively. The various categories used in the questionnaire was student’s attitudes towards learning CAD-CAM-CNC subjects, students’ opinions about their lecturers approaches to teaching process, students’ opinions and views about various aspects the CAD-CAM-CNC. The study concludes that the students taught with a combination of CAL package and traditional methods were more effective, efficient and satisfied with their learning experiences. So the proposed hybrid learning method (CAI plus traditional teaching method) is most suited for CAD-CAM-CNC teaching. Computer Technology; Computer-Assisted Instruction (CAI); Computer Assisted Learning (CAL); Computer Aided Design (CAD); Computer Aided Manufacturing (CAM); Computer Numerical Control (CNC)

Development of the computer-aided process planning (CAPP) system for polymer injection molds manufacturing

Beginning of production and selling of polymer products largely depends on mold manufacturing. The costs of mold manufacturing have significant share in the final price of a product. The best way to improve and rationalize polymer injection molds production process is by doing mold design automation and manufacturing process planning automation. This paper reviews development of a dedicated process planning system for manufacturing of the mold for injection molding, which integrates computer-aided design (CAD), computer-aided process planning (CAPP) and computer-aided manufacturing (CAM) technologies

IPAD: A unique approach to government/industry cooperation for technology development and transfer

A key element to improved industry productivity is effective management of Computer Aided Design / Computer Aided Manufacturing (CAD/CAM) information. To stimulate advancement, a unique joint government/industry project designated Integrated Programs for Aerospace-Vehicle Design (IPAD) was carried out from 1971 to 1984. The goal was to raise aerospace industry productivity through advancement of computer based technology to integrate and manage information involved in the design and manufacturing process. IPAD research was guided by an Industry Technical Advisory Board (ITAB) composed of over 100 representatives from aerospace and computer companies. The project complemented traditional NASA/DOD research to develop aerospace design technology and the Air Force's Integrated Computer Aided Manufacturing (ICAM) program to advance CAM technology. IPAD had unprecedented industry support and involvement and served as a unique approach to government industry cooperation in the development and transfer of advanced technology. The IPAD project background, approach, accomplishments, industry involvement, technology transfer mechanisms and lessons learned are summarized

Pengelolaan Biaya Manufaktur pada Lingkungan Teknologi Manufaktur Maju

Tingginya tingkat persaingan yang terjadi sebagai akibat adanya globalisasi ekonomi mendorong Perusahaan untuk selalu unggul dalam persaingan. Salah satu alternatif penting yang perlu dipertimbangkan Perusahaan adalah penggunaan teknologi manufaktur maju (advanced manufacturing technologies). Dengan digunakannya teknologi ini diharapkan Perusahaan dapat memperhatikan aspek fleksibilitas, mutu, dan biaya melalui (a) Computer-Aided Design dan Computer-Aided Engineering, (b) Computer-Aided Manufacturing, (c) Flexible-Manufacturing System, dan (d) Computer-Integrated Manufacturing. Penerapan teknologi manufaktur maju memberikan dampak terhadap cara pengendalian operasi manufaktur. Pengendalian terhadap operasi manufaktur dalam lingkungan manufaktur maju dapat dilakukan dengan menerapkan just in time, cellular manufacturing, dan total quality control. Berubahnya cara-cara pengendalian operasi manufaktur ini memberikan dampak terhadap pengelolaan biaya manufaktur. Pengelolaan biaya manufaktur pada lingkungan teknologi manufaktur maju lebih ditekankan pada pengelolaan aktivitas (activity management). Pada pengelolaan ini lebih difokuskan pada upaya untuk menurunkan atau menghilangkan aktivitas bukan penambah nilai

CA-Techniken und CIM

Der Arbeitsbericht gibt zunächst einen Überblick über die technisch orientierten rechnergestützten Komponenten im Rahmen des Computer Integrated Manufacturing (CIM), die sogenannten "CAx-Systeme" oder "CA-Systeme": CAD (Computer Aided Design), CAP (Computer Aided Planning), CAM (Computer Aided Manufacturing), CAQ (Computer Aided Quality Assurance), CAI (Computer Aided Instruction). Er geht dann auf Schnittstellen der Teilsysteme untereinander und auf Schnittstellen zu anderen, insbesondere zu betriebswirtschaftlich orientierten Anwendungssystemen ein. Ansätze und Probleme der Integration unterschiedlicher Softwaresysteme sowie die neuen Herausforderungen an die Betriebswirtschaftslehre und an den Betriebswirt beschließen den Beitrag

Overview of NASA/OAST efforts related to manufacturing technology

An overview of some of NASA's current efforts related to manufacturing technology and some possible directions for the future are presented. The topics discussed are: computer-aided design, composite structures, and turbine engine components