Re-constructible CMM software system modeling and its implementation

This paper presents a novel way for the re-constructible CMM software system modeling by taking advantage of a tiered modeling strategy. It consists of four tiers: (1) the bottom layer is the CAD model manager which encapsulates geometric engine and 3D object displaying engine as a COM; (2) the middle is the kernel components which is designed to manage the objects of geometric entity, coordinate system, probe and the system environment parameters etc; (3) the third layer is function modules layer that is used to manage and handle the messages and events of the windows/dialog, menus and toolbars; (4) the top layer is GUI module that is designed to initialize the application with the resource of GUI with the manner of dynamic loading. A set of commercial CMM software, Direct DMIS, has applied the method in a R&D of China National Institute of Measuring and Test Technology (NIMTT). It proves that the developed system can effectively integrate the modules distributed in different layers developed with C++ or C# and the proposed method is feasible.