| The vacuum treatment technology has a series of advantages, such as non oxidation, non decarburization, degreasing, good degassing effect, good surface quality, little deformation, long service life, no pollution, high automation level, and so on. Moreover, it could replace the traditional salt bath heat treatment and then solve the problems of traditional salt bath heat treatment, such as health risk, environmental pollution and of, and three wastes difficulty to deal with.At present, some vacuum treatment company workers still use hands when they design and query of process scheme, solve problems of vacuum treatment and record the feedback information of manufacturers in the process of precise complex cutting tool production. Thus it will reduce the work efficiency undoubtedly. In this article, the computer technology is used to establish the precise complex cutting tool vacuum hat treatment expert system to solve the mentioned problems. Besides, the difficulty of precise complex cutting tool vacuum heat treatment process scheme design reflects on the rich experiences and weak theory in the process of design. It needs large experience knowledge in the process of designing process scheme. As the knowledge is preserved in the brain of experienced technologist, after they retire or turnover, the rich knowledge will disappear and the insufficient experienced designers have difficulty in working with new process scheme and quality of precise complex cutting tool after vacuum heat treatment can not be guaranteed. According to this question, this article puts forward to apply CBR technology in this process, uses the former accumulated data and experience to establish new process scheme.This article makes further research and discusses mainly in the following aspects:First of all, this article introduces the present situation of precise complex cutting tool vacuum heat treatment, expert system and its application in vacuum heat treatment. Secondly, it analyses the design goal, the performance and essential function of precise complex cutting tool vacuum heat treatment expert system. It also introduces the development environment and function module of this system. Then it gives a detailed description of realized function. Finally the CBR technology is implemented to build the process reasoning mechanism of precise complex cutting tool vacuum heat treatment. The key technologies such as the description model of process case, the construction of knowledge base, the case retrieval strategy and the case storage are applied in construction of inference engine.The design of precise complex cutting tool vacuum heat treatment expert system will improve the quality of precise complex cutting tool and raise production efficiency. |
