Shift Start Time
Shift End Time
Planned Stop Time
Unplanned Stop Time
Total Production
Ideal Cycle Time(minutes)
Total Scrap
Let’s look at how we calculated your OEE above. The OEE formulas is:
Let’s break down each component of the OEE formula:
To calculate availability we first determine the duration of the shift in minutes.
Then subtract breaks, lunches and planned maintenance included in Planned Downtime.
Next calculate the operating time of the equipment. To do this subtract any unplanned downtime from the planned production time.
Now we can calculate the availability percentage
Performance is how the equipment is performing against its capacity. In this calculation we use the ideal cycle time and operating time to determine how many parts the machine can produce under ideal operating conditions. We then calculate the ratio of how many parts we actually produced vs the capacity.
To calculate Performance we use the total parts produced, this includes any scrap or rejected parts.
Quality is the ration of good parts versus total production.
Now we take each of the three components and put them in the the formula above.
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