模板1_09.pptVIP

1-1  Chapter 9Lean Systems Characteristics of Lean Systems: Just-in-Time (continued) Pull method of materials flow Consistently high quality Small lot sizes Uniform workstation loads Standardized components work methods (continued) Characteristics of Lean Systems: Just-in-Time Close supplier ties Flexible workforce Line flows Automated production Preventive maintenance Lot Size and Cycle Inventory Lot Size and Cycle Inventory Lot Size and Cycle Inventory Lot Size and Cycle Inventory Continuous Improvement with Lean Systems Single-Card Kanban System Single-Card Kanban System Single-Card Kanban System Single-Card Kanban System Single-Card Kanban System Single-Card Kanban System Single-Card Kanban System Single-Card Kanban System Lean Systems in Services (continued) Consistently high quality Uniform facility loads Standardized work methods Close supplier ties Flexible workforce (continued) Lean Systems in Services Automation Preventive maintenance Pull method of materials flow Line flows Operational Benefits (continued) Reduce space requirements Reduce inventory investment Reduce lead times Increase labour productivity Increase equipment utilization (continued) Operational Benefits Reduce paperwork and simple planning systems Valid priorities for scheduling Workforce participation Increase product quality Implementation Issues Organizational considerations Human cost of JIT systems Cooperation and trust Reward systems and labour classifications Process considerations Inventory and scheduling MPS stability Set-ups Purchasing and logistics Foundations of Operations Management, Canadian Edition Ritzman, Krajewski, Klassen ? 2004 Pearson Education Canada Inc. Lot size = 100 On-hand inventory 5 10 15 20 25 30 Time (hours) 100 – 75 – 50 – 25 – 0 – Average cycle inventory Figure 9.1 Average cycle inventory Lot size = 100 On-hand inventory 5 10 15 20 25 30 Time (hours) 100 – 75 – 50 – 25 – 0 – 9-* Figure 9.1 Average cycle inventory Lot size