Agenda of Week X. Layout Capacity planning Process selection Linebalancing Review of week 9 13 Approaches Purposes : Finishing the capacity planning Understanding the selection of process type Facility layout 2 Product layout Process layout Cellular layout
Review of Week IX. Capacity and Process Capacity planning 1 Approaches Process selection 2 Jobshop Batch Repetitive Continuous Purposes : Finishing the capacity planning Understanding the selection of process type
Facility Layout (Ch.6) o Configuration of departments, work centers, and equipment Substantial investments Long term commitment Significant impact on cost and efficiency
Facility Layout (Ch.6) o Objectives Smooth flow of work, material, and information Attainment of product quality Use of workers and space efficiently Avoidance of bottleneck Minimization of production cost and time Elimination of wastes
Facility Layout (Ch.6) o Product layouts For repetitive processing Standardized processing operations Smooth, rapid, high volume flow Standardized layout arranged according to a fixed sequence of tasks Figure 6.4, 6.5
Facility Layout (Ch.6) Preventive maintenance Advantages and disadvantages: p.240 U-shaped layouts
Facility Layout (Ch.6) o Process layouts For nonrepetitive processing Intermittent flexible processing Functional grouping and machine shop General-purpose equipment Figure 6.7 Advantages and disadvantages: p.242
Facility Layout (Ch.6) o Fixed position layouts Construction sites o Cellular layouts Process layout consisting of cells Cell processes items that have similar requirements Each cell is a miniature of product layouts Table 6.3
Line Balancing (Ch.6) o For product layouts o Arrangement of workers and machines in sequence needed Production line or assembly line Figure 6.10 o Tasks Basic work unit not separable At least one task is assigned to a workstation
Line Balancing (Ch.6) o Workstation A bunch of tasks o Process of assigning tasks to workstations Equal time requirements
Line Balancing (Ch.6) o Cycle time Moving interval of conveyor Maximum time allowed at each workstation to complete its set of tasks on a unit Time interval between final products o Assignment problem of tasks needed to produce final products to workstations regarding precedence relationship
Line Balancing (Ch.6) Criteria Total task time of each workstation <= cycle timw Minimization of idle time o Approach Precedence relationship Figure 6.11 Cycle time calculation
Line Balancing (Ch.6) Minimum workstation number Assignment # of workstations and total idle time Efficiency Post review: Reduction of cycle time etc.
Line Balancing (Ch.6) o Line balancing procedure: Table 6.4 o Example 2 o LINGO illustration Example 2 Line balancing_ex2.lg4