OEE设备综合效率介绍

Factory not opened on a regular basis
100 (%)
No OEE losses
OEE (%)
Value added operating time *
7 Equipment not open but factory open
1 Planned stops
(meals, breaks, training, meeting, planned maintenance, tests)
• OEE rate Calculation (%)
OEE =
Added value Operating time
Nominal opening time
Standard Cycle Time = The best ever observed respecting quality criteria
(Parts manufactured but not good and rework)
6 Micro-stoppage and Slow down
(what is left over after deducting the 6 other causes of losses)
* Nb of good parts produced x Standard cycle time)
• Added value Operating time =
Nb of good parts produced x Standard Cycle Time
• Nominal opening time =
– Days of the week when the factory is open on a regular basis (ie including management, support functions,..)
Loading Unloading
Loading Unloading
CT
Transformation
PRODUCT A
CT
Transformation
PRODUCT A
C/O time CT
1st PRODUCT
B Quality not yet OK
PRODUCT B
Quality OK
Change Over time (C/O) = time between last good part “A” and first
• OEE measurement and improvement must be implemented:
– For heavy and expensive means that are a bottleneck comparing to the customer demand in order to deliver,
good part “B”
How to track losses? “Production tracking form” OEE
06H00
Productio n
Planned stops
Machine breakdown
s
Change over time
Organizat ional stops
06H30
OEE: Overall Equipment Efficiency
Contents
• Introduction • OEE Definition • OEE measurement • OEE case study • OEE analysis and improvement • New investment requests
2 Machine breakdowns and no planned maintenance
3 Change over time
4 Organizational stops
(Lack of tool, material, worker, punctual lack of load)
5 No Quality
Total Available Time
365 days x 24 hours
Nominal opening time
What are Cycle time and Change over time?
Cycle Time (CT) =
TimBiblioteka Baidu spent between I load part «A »until I load next part «A »
Comments
Part A
07H00
07H30
Problem on control card, Maintenance action N°A225
08H00
Standard form to be used:
08H30
ATDPRO_APS_production tracking form_FC_*.xls
Contents
• Introduction • OEE Definition • OEE Measurement • OEE case study • OEE analysis and improvement • New investment requests
OEE : Category of losses
10H00
Break
10H30 11H00 11H30
Change over from part A to B
First part produced isn't yet correct as mould warm up isn't enough
12H00
Contents
• Introduction • OEE Definition • Measurement • OEE case study • OEE analysis and improvement • New investment requests
– then, in order to provide data’s to request a new investment
Contents
• Introduction • OEE Definition • OEE measurement • OEE case study • OEE analysis and improvement • New investment requests