A Hybrid Mathematical Model for Cell Creation and Worker Assignment With Layout Design

Abstract

 The architecture of Cellular manufacturing systems(CMS) mainly focuses on selecting machines in the  cells which is called as Cell Formation (CF). The cell layout usually follows the cell formation to maximize the cell performance. Although, worker performance and his capability in handling different machines affect the cell productivity, it wasn’t given much attention in late research.  In this paper, an integrated hybrid mathematical model are proposed. To form cells, design layout and assign worker in three-dimensional part-machine-worker assignment problem. Machines and operators are allocated to cells in the first mathematical model based on minimal costs of material handling, operation and scrap costs. Whereas in the second step model, output of first step model is used to find best arrangement of machines and cells within the system. To validate the proposed approach, a real case study in central work shop for dies manufacturing in food stoves company in Egypt is applied.