Authors: Janus S Liang
Publish Date: 2009/06/09
Volume: 46, Issue: 5-8, Pages: 737-755
Abstract
In this paper several webbased interfaces for user interaction and a taskoriented decision approach are proposed to build a tasks schedule model and then display the manufacturing process in a virtual environment which is created by a geometric virtualrealitybased visualization technology for screw threads generation The proposed tasks schedule model consists of four types of objects virtual component state manager transfer operator and flow controller The virtual component has a geometric model with kinematics and their attributes To control the geometric model a component controller which models the logical aspects of a component is used The component controller should be able to implement componentlevel orders by operating the geometric model For the fidelity of the tasks schedule model a transfer operator has a set of componentlevel command imitating the physical mechanism of a transfer As a result more accurate simulation results can be expected The flow controller makes decisions on friable transfers based on decision parameters which are maintained by the state manager To have better structure and easier implementation a virtual manufacturing platform can be modeled in a hierarchical and modular manner as an integrated system consisting of a product design suite a web interface module and a visualization module Meanwhile it provides a solution of learning of manufacturing sequences cost effective platform independent and sharing visualized information over the internet for virtual manufacturing Finally the tasks schedule model has been implemented with an example in screw threads generation
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