[物流课程讲义9.ppt

Flow, Space, andActivity Relationships Requirements of a Facility Flow depends on lot sizes, unit load sizes, material handling equipment and strategies, layout arrangement Space is a function of lot sizes, storage system, production equipment type and size, layout arrangement, … Activity relationships are defined by material or personnel flow, environmental considerations, control issues, … Challenge in Manufacturing Decentralized storage Multiple-receiving docks Cellular manufacturing Pull strategies in material movement Small lot purchasing and production … Departmental Planning Planning departments involve Production Support Administrative Service areas combining workstations to perform “like” functions Production Planning Departments Depends on product volume-variety Product Large, stable demand for a standardized product Fixed materials location Low, sporadic demand for a very large product Product family (group technology) Medium demand for similar components Process planning departments Combination of workstations containing “similar” process Support, Administrative, Service Offices Areas of storage, maintenance, administrative process Cafeterias Restrooms … Traditionally, these planning departments are treated as “process” departments. Cellular manufacturing concept is adapted by many companies now. Manufacturing Cells Aggregate based on similar manufacturing operations or design attributes. It is better to combine with Just-in-Time (JIT) Total Quality Management (TQM) Total Employee Involvement (TEI) Manufacturing Cells (Cont’d) Benefits Reduction of inventories, production leadtimes, cost, … Simplification of communication, handling, production scheduling Improvement of productivity, flexibility, inventory turnover, … Manufacturing Cells (Cont’d) Important issues Selection – machine and part types Design – layout, production, material handling requirements Operation – lot size, scheduling, production type (push vs. pull) Control – performance mea