The Reliability Design For The Auto Stiletto And Binding Machine

With the development of the finance trade, the OA (the Office Automation) and the environment protection consciousness of the people, more and more people want an auto stiletto and binding equipment without air pollution. Just based on that demand, the auto stiletto and binding machine was designed and produced , but it shows a lot of defects. And the analysis indicated that the essential cause is the low reliability, so the key to improve the performance of the equipment is to improve its reliability.The research of the reliability is devicded into two parts. The first one is the Fuzzy Fault Tree analysis to the auto stiletto and binding machine. In this part the Fuzzy Mathematics theory and Fault Tree method are studied and the method of the Fuzzy Fault Tree and its math expressions are deduced. The conception of Fuzzy Distance Essentiality is defined and its calculational method is deduced, too. And this method is used to analyze the auto stiletto and binding machine.The second part is about the reliability design of the auto stiletto and binding machine. The first step is the reliability distribution. In this step, the blocking idea is applied to reliability distribution, a new conception --Technics Block-- is defined and a method that can calculate the complexity of systems and parts is deduced and used to distribute the reliability of the auto stiletto and binding machine. The second step is designing the dimensions and configurations according to the results above. And the last step is machining the parts and assembling the sample machine. And the test for the sample machine showed all the performances are up to the requirements.During the process of researching and compossing the paper, I consulted a great deal of literatures and briefly sum up some valuable knowledge. This paper is about some research aiming at the problem from practice, so it has the double values of theory and practice.