Abstract: Based on the analysis on the structure of glass bottle product and the standard of mould design for enterprises, a method of glass bottle mould component design based on model retrieval is proposed on the NX software platform. Applying the image recognition algorithm of polar-radius- invariant moment for feature recognition, a library case that contains features of glass bottle models and their corresponding scheme for mould component assembly is constructed with the index of bottle products. After retrieving and matching the most similar molds in the case library, the successfully-matched components are designed based on experts’ knowledge and experience in the knowledge base of system. The feasibility of the design method turns out to be verified by the design example of the blank and blow mould of 400 ml jar in the article.

Key words: glass bottle product, mould design, model retrieval, polar-radius-invariant-moment