HOW DO I OPTIMISE MY MANUFACTURING PROCESS THROUGH OEE?
- Better manage unplanned down time
- Understand the rate of production on your machine
- Ensure the quality of your products
What is OEE?
Simply put – OEE or Overall Equipment Effectiveness is a measure of actual productive time of a piece of equipment or a group of equipment working together (e.g., a production line). It considers Availability (A) and Performance (P) of the equipment as well as the Quality (Q) of goods produced by that equipment within the monitored timeframe. OEE is the gold standard when it comes to measuring productivity especially within manufacturing and production assemblies. It is measured in percentage and a 100% OEE score means your equipment is running as effective as it could get.
Availability (A) often referred to as uptime, this accounts for unplanned downtime. This is a percentage of production time the equipment is available to operate. 100% Availability means the equipment has been in operation all the planned production time.
Performance (P) accounts for production speed. When the equipment is available is it operating at rated speed? Several factors could affect performance including small stops. A 100% Performance means the equipment ran at rated speed when it is available.
An equipment could be available and running at rated speed but how about the quality of the goods at its output? This is where Quality (Q) comes in. It is a percentage of good parts relative to total units produced. 100% Quality means no defects were recorded in the produced parts.
OEE = A*P*Q
How can OEE help my business?
If you have been collecting this kind of data processing it to give you this result of your OEE is possible to incorporate into your process. OEE doesn’t just tell you how many good parts were produced and the percentage to be scrapped, it delves deeper to tell you exactly where the discrepancies are and what causes them. It engages a problem-solving approach, using practical methods to achieve a more refined and efficient process.
It is important to note that the level of detail available from OEE and by extension the quality of conclusion you can draw can be impacted by several factors. For instance, the amount of data available to the OEE system will affect the depth of insight to be derived. Every OEE system is unique and is designed to suit the equipment. However, once implemented it is easy to interpret and in most cases reveals certain trends or patterns that would otherwise go unnoticed.
One of DAJO solutions clients used OEE focusing on the performance and they were able to notice that their night shift had a higher production than their other shifts throughout the day. This helped them identify key areas in production where they were being slowed down.