集団処理・同期型検査工程の解析 : 第2報, 集団処理サイズが任意の生産率の近似解法

概要

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We consider an inspection system consisting of two inspection stations, numbered 1 and 2, arranged in tandem, in which station i, i=1, 2, inspects m_i jobs (at a time) as a batch with constant inspection time T_i. An infinite number of jobs always waits in front of station 1. After station 1 inspects one batch, information on whether the inspection operation was (a) successful or (b)unsuccessful can be obtained. In the case of (a), it is decided whether each job in the batch is defective or nondefective. The nondefective jobs are transferred to station 2 but the defective jobs are removed. In the case of (b), the batch is inspected again at station 1 for time T_1. Station 2 operates in the same manner except that the batch size and inspection time differ from those at station 1, and that jobs determined to be nondefective after inspection at station 2 are considered to be perfect products. There is a finite number of waiting positions (buffer) between stations 1 and 2 so that 'production blocking' occurs. We propose an approximation method for the production rate of the system. Through a series of numerical experiments we show that the method not only gives a good estimate of the rate, but is very useful for overcoming design problems in such inspection systems.
一般社団法人日本機械学会の論文
1996-05-25