Knowledge integration in CAD-CAM process chain

Abstract

The automatic detection of engineering drawing modifications made by other designers is central to improving CAD/CAPP working efficiency levels. Engineering drawings include numerous entities, but only a few entities are modified. It is difficult for designers to identify modified entities in a complex drawing. This paper presents a novel means of detecting entities in engineering drawings created by other designers that employs semi-fragile watermark technologies. Modifications will change embedded watermarks. Consequently, detection is realized by analyzing changes. The approach was implemented, and the experimental results demonstrate that the method is reliable and can accurately detect entities that have been modified, deleted and added.

Knowledge-Based Support During Design Optimization Using Flanges as an Example

“…Depending on the requirements, a configurator places the UDFs in the CAD assembly. Moreover Manoharan et al (2016) shows knowledge integration in the CAD-CAM process chain through the example of NC and additive manufacturing. Here, the author implements a web service for linking the CAD system with the respective databases (Figure 1).…”

“…Here, the author implements a web service for linking the CAD system with the respective databases (Figure 1). According to Manoharan et al (2016), one important advantage for using a web service is if changes are needed in the database structure. This ensures that only the web service or the database has to be adapted and not the expert system.…”

Knowledge-Based Manufacturing: A Proposal to Manage Manufacturing Rules

“…the process of capturing and formalizing expertise before its implementation in an IT system. Manoharan et al (2016) have instead shown how a manufacturing knowledge integration in CAD systems can support the planning and work preparation.…”