An Integrated Model of Allocating Operational Tolerances andMinimizing Lateness in a Discrete Part Job Shop Environment

摘要

Many researchers found that original process plans are being modified in practice in order to accommodate changesin the shop floor. These modifications are typically carried out by non-professional process planners and eventuallylead to a conflict between scheduling activities and process planning functions. Products going out of dimensioningduring production are a main cause of process planning infeasibility. This paper introduces an integrated model thatsimultaneously serves three purposes: allocating operational tolerances, minimizing products lateness, and figuringoperation-machines assignments. The results demonstrated by an example proved the effectiveness of the proposedapproach.