Research and Development of Computer-Aided Engineering Drawing Software for Heterogeneous CAD Platforms

The engineering drawings are important documents for industrial manufacture and technical exchange, but it is very difficult and tedious to make a standard drawing in 3D CAD systems. Through analyzing the functional shortage of engineering drawing module and well considering the differences of secondary development on different 3D platforms, the paper presents a general computer-aided engineering drawing software architecture for heterogeneous CAD systems based on ready-made software architecture and advanced development tools. Several key technologies are discussed in detail, including deployment of physical modules, construction of logical objects and maintenance of their instances, management of engineering constraints of attached entities which follow their host entities, access of product assembly model, etc. A software package based on the method mentioned above is developed and used in practice.