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Under the assumption that the process shift and equipment failure are two different but dependent stochastic processes, and the failure rate increases when the process is out of control, an economic optimal approach by integrating statistical process control and preventive maintenance is proposed. First, five scenarios are defined. By the cost structure analysis and the reliability theory, the cycle...
In a complex assembly system, the kinematic precision analysis is closely related to the geometric design, tolerance design, and the precision of movement modules. However, the assembly information is so numerous and complex that the traditional researches are limited to the design of movement modules. In this paper, we have proposed a new integrated method to predict the assembly kinematic precision...
This study deal with a kind of sequencing problem in multi-shop production based on multilane selectivity bank. To meet the requirement of overall production optimization, this paper performs rearranging on output sequence of an upper stream workshop by means of a sorting buffer; therefore the changeover work in its downstream workshop can be reduced. After introducing the mathematical model of this...
In order to study the field reliability of horizontal machining center (HMC), field reliability data for 14 HMC in an engine plant of large automobile manufacturing company in China over ten month is collected. Based on this data set, some simple plots method such as CP (the cumulative plot), MCF(mean cumulative function), RR(recurrence rate) and MCCF(mean cumulative cost function) are used to analyze...
In comparison with the single attribute evaluation, multi-attribute evaluation is to given an overall assessment of the effect and performance of the system by using several indexes and comprehensive evaluation function. With the number and forms of the evaluation indexes increasing, how to select the evaluation indexes is very important before evaluation. This paper mainly solved the selection and...
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