The decisive factor for planning assembly is the cycle time to be observed. This indicates the time rhythm that production must adhere to in order to achieve the required planned number of units. It is also referred to as the customer cycle.
Number of units per year
Working days per year
Number of shifts
Working time per shift
Overall availability of the system (OEE)
The cycle time is particularly required for station allocation and balancing.
In general, different types of cycle time can be determined, such as net cycle time, line cycle time and the cycle time of automatic stations.
The net cycle time is a purely mathematical calculation of the cycle time. It only considers the time available in relation to the required number of units.
The line cycle time, on the other hand, also considers the overall availability of the system, the OEE (fv). OEE stands for Overall Equipment Effectiveness and is a key figure for representing system productivity. The OEE cannot be observed in a system to be planned, so an expert assessment is necessary. Depending on the type of assembly system, the OEE is typically between 99% (simple manual work) and 80% (complex, highly automated systems).
The cycle time of the automatic stations also takes the machine lead time into account. This ensures that the automatic process is always faster than manual work, so that the employee performance can be increased at any time and the employee does not have to wait for the machine (between 10% and 25%).
| tT: | Line cycle time | s / h |
| tTM: | Cycle time with machine lead time | s / h |
| tTN: | Net cycle time | s / hr |
| fM: | Machine availability | % |
| fS: | Number of shifts | Number |
| fV: | Overall availability of the system (OEE) | % |
| tAT: | Working days per year | d / a |
| tAZ: | Working time per shift | Min / shift |
| xj: | Number of pieces per year | St / a |
Is this solution interesting for your production, or do you have further questions about one of our solutions?
Or you can use our contact form. There you can briefly describe your request and we will then contact you directly.
