| # Calculate Norm Time (tirou0230m000) Use this session to calculate the cycle time or production rate of an operation in the Routing Operations (tirou1102m000) session. ERP LN calculates the values by means of a norm table. ERP LN determines all possible norm times for operations by interpolation between the minimum and maximum values for the two axes. You can also specify a factor to calculate the norm time, for example, the number of holes to be drilled. Related topics Calculating production rate and cycle time from a norm table Calculating based on norm tables Norm Table A table that contains the times required to perform a task (norm times), or the numbers of times that a task can be performed in a specific unit of time (norm units). The norm times or norm units depend on two series of values presented in the columns (X-axis) and the rows (Y-axis) of the table. Example The time that it costs to drill a hole depends on the material's thickness, and the hole's diameter. A norm table that contains norm times can look like this:
| Thickness (mm)
Diameter (mm) | 1 | 2 | 3 | 4
0.5 | 1.2 | 1.4 | 1.6 | 1.8
1.0 | 2.2 | 2.5 | 2.8 | 3.1
1.5 | 3.1 | 3.5 | 3.9 | 4.3
The norm time to drill a hole with diameter 1.0 in a material with thickness 2 is 2.5. Norm Time Table Type Allowed values: X-Axis Description The actual physical quantity on the x-axis. Y-Axis Description The actual physcial quantity on the y-axis. Factor for Norm Time A factor to calculate the norm time, for example, the number of holes to be drilled. Calculated Norm Time The time that is required to perform a task. That time is determined on the basis of two values in the norm table. Example To drill a hole with a diameter of 5 mm (first value) in a sheet with a thickness of 8 mm (second value) takes 0.5 minute (norm time). Calculated Production Rate The number of times that a task can be carried out for a specific unit of time (minute or hour). That number of times is determined on the basis of two values in the norm table. Example Each minute, 5 boards with a thickness of 5 mm (first value) and a width of 60 mm (second value) can be sawn. Consequently, the norm unit is 5. |