Application of Computer Mechanical Drawing Technology in Mechanical Engineering Manufacturing Parts Design

At present, many CAD software products can not fully meet the requirements of the national standard "technical drawing and mechanical drawing", which greatly affects the quality and speed of engineering design. The purpose of this research is to develop a computer aided instruction system for mechanical drawing major of mechanical engineering department. This system is one of the attempts of the Department of mechanical engineering to develop a complete set of CAI system. A new multi-level structured manufacturing reuse model is proposed, which can obtain the abstract information, topological information and processing semantic information involved in manufacturing reuse. Firstly, machining features are identified from MBD model. Then, the clustering of coupled machining features is introduced to construct the structural elements whose granularity is larger than that of machining features. Finally, the MBD model is established through the hierarchical reorganization of machining features and the clustering of coupled machining features. The results show that the highest efficiency of JDBC is 31%, and the lowest portability of ASP is 20%.