Development of a novel 3D simulation modelling system for distributed manufacturing

Abstract

This paper describes a novel 3D simulation modelling system for supporting our distributed machine design and control paradigm with respect to simulating and emulating machine behaviour on the Internet. The system has been designed and implemented using Java2D andJava3D. An easy assembly concept of drag-and-drop assembly has been realised and implemented by the introduction of new connection features (unified interface assembly features) between two assembly components (modules). The system comprises a hierarchical geometric modeller, a behavioural editor, and two assemblers. During modelling, designers can combine basic modelling primitives with general extrusions and integrate CAD geometric models into simulation models. Each simulation component (module) model can be visualised and animated in VRML browsers.It is reusable. This makes machine design re-configurable and flexible. A case study example is given to support our conclusions.

The Simulation of VRML Based Manipulator and Techniques

“…And these VRML files with connection features can be utilized for supporting distributed design and manufacturing. Reference [6] describes it as distributed component repositories. VRML enables the integration of interactive 3D graphics into the web.…”

“…In turn each sub-system consists of one or more modules. Through a Web server, operator can drive the real machine in the workshop and the corresponding virtual machine (a VRML simulation model) in its client windows [5,6] .…”

“…Actually, when editing the CAD models in VRML environment, if a part was modified in the CAD packages, engineers had to export the CAD models to VRML files again for reassembly. So this process needs more patient and efforts [6,9] .…”

Relation between part position and kinematic freedom: An expository survey

“…The ambiguities associated with the combinatorial compatibility scheme followed in [52] are eliminated by explicitly specifying the connection between the form features in contact [56,57].…”

An improved collision detection algorithm based on OBB swept volume for virtual assembly

“…The speed and the accuracy of collision detection are the main concerns (Chung, 2007;Valentini 2009;BoehmDavis, 2008;Qin, 2004;Wang, 2010). An efficient and exact collision detection algorithm is needed to improve reality and to enhance immersion of the virtual environment.…”