Calculate OEE per hour

Q: Suppose I want to calculate OEE per hour, continuously during the running shift, in order to present the team an ongoing status, how should I calculate this, specially when the machine is not running? Does the OEE drop to zero?

What if the Availability has been 50% for last hour but the actual production has been zero? What do you do with the Performance number? Should it be equal to zero?

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OEE in long-run milling process

Q: We are tool & die maker for  the automotive industry. Overall each die will take 20 to 35 days (based on size) to complete. Depending on the shape (contour) of the die, the process is done manually or auto mode. The mode depend on our CAD/CAM capability to do the programming.

How do we calculate OEE in our milling process?

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How to set Availability Definitions (1)

Q: What are the time effects of the situations below to the availability and OEE calculation?

  1. Excise tax checking time (60 per shipment)
  2. Machine cleaning time for the quality of product. (10 min every hr.)
  3. External factory Electrical failure time. (uncontrollable)

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