The Development and Practice of the Cad/Capp/Cam Integrated System of Feature-Based Modelling

1992 ◽  
pp. 65-68
Author(s):  
Peng Qingjin ◽  
Liang Liansheng ◽  
Zhao Rujia ◽  
Xu Qingyou
Keyword(s):  
Integrated System ◽  
Feature Based

Research on Intelligent MCAD/CAPP/CAFD Integrated System Modeling

2011 ◽  
Vol 48-49 ◽  
pp. 960-963
Author(s):  
Hui Fang Chen
Keyword(s):  
Structural Design ◽  
System Modeling ◽  
Functional Model ◽  
Three Dimensional ◽  
Integrated System ◽  
Case Based Reasoning ◽  
Planning Techniques ◽  
Object Oriented Technology ◽  
Mapping Process ◽  
Feature Based

Feature extraction and expression of three-dimensional MCAD entity model is independent of platform. According to STEP, this paper discusses for a unified MCAD / CAPP / CAFD integrated system to establish the program model and study the key technologies. The STEP neutral file that contains the model is taken to decide the design features of the part. The identification of geometric features and geometric characteristics of features to the mapping process, rule-based reasoning and case-based reasoning with the way things feature-based process planning techniques in the process of reasoning problems. UML object-oriented technology and methods such as functional analysis of the system and structural design, the initial mode of integrated system functional model and structure is established

scholarly journals An eXtended Manufacturing Integrated System for feature-based manufacturing with STEP-NC

2011 ◽  
Vol 24 (9) ◽  
pp. 785-799 ◽  
Author(s):  
R. Laguionie ◽  
M. Rauch ◽  
J.-Y. Hascoët ◽  
S.-H. Suh
Keyword(s):  
Integrated System ◽  
Feature Based

Generation of Alternative Feature Representations and Feature Precedence Relations for Feature-Based Process Planning

2005 ◽  
Author(s):  
Dusan N. Sormaz ◽  
Jaikumar Arumugam
Keyword(s):  
Process Planning ◽  
Integrated System ◽  
Process Selection ◽  
Feature Mapping ◽  
Design Information ◽  
Feature Representations ◽  
Feature Interactions ◽  
Precedence Relations ◽  
Cad Models ◽  
Feature Based

This work deals with the analysis and transfer of design information, expressed in terms of features, from feature-based CAD models to CAPP systems in order to perform process planning. In this paper, we present an integrated system that retrieves design information from a feature-based CAD model, performs feature mapping, identifies interactions between features, generates alternative feature representations and feature precedence relations. The alternative feature representations provides the process planner with more flexibility in terms of process selection and are shown in the form of an AND-OR graph. The feature precedence relations, represented as a directed feature precedence network, assist the process planner in its process sequencing tasks. Feature mapping involves the mapping of design features into equivalent valid machining features. Feature interactions are identified by analyzing part geometry for face adjacency and hence feature adjacency. The interacting features are then analyzed to identify possible alternative feature representations and feature precedence relationships. Procedures for the identification of feature interactions and determination of alternative feature representations and feature precedence relationships are provided. The generated AND-OR graph and the feature precedence network seeks to aid CAPP systems in process sequence generation and serve as a vital step for the integration of design and planning systems.

FR-IR Molecular Microanalysis System

1990 ◽  
Vol 48 (2) ◽  
pp. 270-271
Author(s):  
John A. Reffner ◽  
William T. Wihlborg
Keyword(s):  
Fourier Transform ◽  
Fourier Transform Infrared ◽  
Integrated System ◽  
Morphological Examination ◽  
Fully Integrated ◽  
Ir Microscopy ◽  
Normal Functions ◽  
Infrared Microspectroscopy ◽  
Infrared Spectral ◽  
Ft Ir

The IRμs™ is the first fully integrated system for Fourier transform infrared (FT-IR) microscopy. FT-IR microscopy combines light microscopy for morphological examination with infrared spectroscopy for chemical identification of microscopic samples or domains. Because the IRμs system is a new tool for molecular microanalysis, its optical, mechanical and system design are described to illustrate the state of development of molecular microanalysis. Applications of infrared microspectroscopy are reviewed by Messerschmidt and Harthcock.Infrared spectral analysis of microscopic samples is not a new idea, it dates back to 1949, with the first commercial instrument being offered by Perkin-Elmer Co. Inc. in 1953. These early efforts showed promise but failed the test of practically. It was not until the advances in computer science were applied did infrared microspectroscopy emerge as a useful technique. Microscopes designed as accessories for Fourier transform infrared spectrometers have been commercially available since 1983. These accessory microscopes provide the best means for analytical spectroscopists to analyze microscopic samples, while not interfering with the FT-IR spectrometer’s normal functions.

Fate of sperm membrane in fertilized ova

1993 ◽  
Vol 51 ◽  
pp. 40-41
Author(s):  
Frank J. Longo
Keyword(s):  
Electron Microscopy ◽  
Electrical Activity ◽  
Sea Urchins ◽  
Morphological Changes ◽  
Integrated System ◽  
Electrophysiological Recording ◽  
Experimental Conditions ◽  
The Status ◽  
Sperm Membrane ◽  
Temporal And Spatial

Measurement of the egg's electrical activity, the fertilization potential or the activation current (in voltage clamped eggs), provides a means of detecting the earliest perceivable response of the egg to the fertilizing sperm. By using the electrical physiological record as a “real time” indicator of the instant of electrical continuity between the gametes, eggs can be inseminated with sperm at lower, more physiological densities, thereby assuring that only one sperm interacts with the egg. Integrating techniques of intracellular electrophysiological recording, video-imaging, and electron microscopy, we are able to identify the fertilizing sperm precisely and correlate the status of gamete organelles with the first indication (fertilization potential/activation current) of the egg's response to the attached sperm. Hence, this integrated system provides improved temporal and spatial resolution of morphological changes at the site of gamete interaction, under a variety of experimental conditions. Using these integrated techniques, we have investigated when sperm-egg plasma membrane fusion occurs in sea urchins with respect to the onset of the egg's change in electrical activity.

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