nullHow to Improve OEE
for SMT
Raymond Kiew
Feb 2009How to Improve OEE
for SMT
Raymond Kiew
Feb 2009OEEOEEOverall Equipment Effectiveness
A measure of how healthy your production process is relative to your planned production schedule
A Standard Metric for Production LossIntroductionOEEOEETime Loss
Rate Loss
Quality LossSimple OEEOEEOEEOEE = Availability x Performance x QualityOEEOEEAvailable TimeOEEOEEWhat are the factors can cause your Available rate low ?Available TimeIdle Time
No Demand
Manning unavailable
Material unavailable
Machine Maintenance
Surplus
Not in use
SMT line is free from production OEEOEEWhat are the factors can cause your Available rate low ?Available TimeEfficiency Loss (Low Productivity) due to
Machine Breakdown
Engineering or Process issues
Shift Changeover
Lunch Break
Operator / Technician response time slow
Material replenishment
Product Changeover
Facility Breakdown
OEEOEEPerformance RateOEEOEEHow to improve Performance rate ?Performance Rate Configure to appropriate modules (NXT) or # of Pick & Place
machine based on product mixedImprove Placement efficiencyBoth Top and Bottom side NXT can run single-sided PCB concurrently
with single reflow oven or double-sided PCB with single line
Wuxi – Bay 1 HP LineExample 11OEEOEEPerformance RateImprove Placement efficiencyWuxi – Bay 1 HPOEEOEEPerformance Rate Configure to appropriate modules (NXT) or # of Pick & Place
machine based on product mixedImprove Placement efficiencyBoth Top and Bottom side NXT can run single / Double-sided PCB Concurrently
With two lines or run complex board with top/bottom with single line.
SHA – Ba12 Imed LineExample 21.1OEEOEEPerformance RateSHA – Bay 12 ImedImprove Placement efficiencyOEEOEEPerformance Rate Increase PCB PanelizationImprove Placement efficiency2OEEOEEPerformance Rate Improve Overall Line balancingImprove Placement efficiency3OEEOEEPerformance Rate Using SMT pallet to place more PCB (more cavity)
Improve placement cycle time (Speed is matter)
Improve Placement efficiencySMT Pallet45OEEOEEPerformance Rate Using VMS (Visual Management system) for quick responseImprove Visual efficiency1OEEOEEPerformance RateProgramme Optimization
Part information database etc
Pick / Place delays timersSet standards for determine a placement speed12OEEOEEHow to improve Performance rate ?Performance RateMachine Performance (Maintenance)
Pick-up (Blocked nozzle etc)
Feeder Attrition23OEEOEEFPYOEEOEEHow to improve FPY ?FPY Reduce Scrap
Improve Process yield
Improve Printing process SPI
Improve placement accuracy
Improve reflow process12345Feedback
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