Data-mining Technology Investigated In Welding CAPP System

Along with the rapid development of computer application technology and its permeation in manufacturing domain in recent years, there have been a lot of institution work about welding expert system, welding database, welding computer aided process planning in and abroad of China. As welding technic has an influence to the quality of the products directly and it determinate the safe of products, and the process of welding technic design is complicated and it has too many diathesis itself, people should introduce database technology to save and manage welding technic documents and information. Affronting the large amount of data, how to tidy up, analyz these producing data, find out the potential information which is valuable to companies, are difficult problems which always puzzle companies. People want to direct production process from analyzing these data in welding production, finding ingenerate regulation and getting scientific prediction results. Data mining is considered to be an effectively method to solve"data boost"and"data abundance and information indigence"at the present time. Whereas all these reasons, this paper using data-mining technology investigate and develop a more intelligent, composite, reconstructed generated welding CAPP system based on welding technic design.Firstly, the paper expatiates current develop status and investigative meaning, points out the lack of CAPP. Then it describes the purpose of research and lodges the designing thoughts of welding CAPP based on data-mining.This paper introduces basic theories and common methods of data-mining briefly, then introduce classical related regulation algorithm and decision trees in details. Aiming at the content of investigation task, this paper also introduces the improved algorithm of related regulation.Based on the elements of data-mining module, according to the theory and characteristic of welding design, combining the requirement of company in practice and welding technic data which have been accumulated these years, this article lodge the thought of design, confirm the frame and module function of the system collectivity, establish design and exploitation scheme again, realize the combination of welding technic design with data-mining.At last, this article introduces all the modules of the CAPP system, meanwhile, it demonstrates all the developed modules, validate the correctness of system and the practicability of capability.The developed generated welding CAPP system using data-mining technology, which can reduce the intension of work, shorten cycle of technic design, enhance the quality and efficiency of designing process, make people have more time and energy to develop new technology and technic. It can also improve the modern management level and science strength, enhance the competition ability of company and overtake international advanced level. The institution and development of data-mining module in this system, has upper theory meaning and application value in practice to welding field using computer aided process planning in our country.