Offcuts
To manage offcuts efficiently, you can set various parameters for them.
Valuation of offcuts
The minimum size of the offcuts and the offcut valuation have a very strong influence on the material costs. Since intelliDivide calculates alternative solutions and takes the material costs into account, the valuations of the offcuts can influence how likely offcuts are to be reused.
When offcuts of a material are available and if they have a low valuation in relation to the costs, there is a high probability that one of the calculated solutions will preferentially use offcuts. The prerequisite is that the material costs have been created correctly in materialManager.
In the following example, a small offcut is valued at 30% of the material costs. The value is set at a very low level, as a great deal of effort is required for handling (printing a label, storage, retrieval, inventory) in relation to the material value. Furthermore, small offcuts are often difficult to reuse. Small offcuts should be avoided wherever possible and reused quickly.
In the example, a large offcut is valued at 80% of the material costs. The value of a large offcut is comparable to a board. The cost of handling is in good proportion to the material value. Nevertheless, these offcuts should also be avoided wherever possible and reused quickly.
An example of how offcuts can be valued.
The material costs are made up as follows:
One board is used for the optimization. Based on the costs of € 10 per m² and the size of 3.125 m², the costs are € 31.25 (1).
Two offcuts are created during panel dividing. A credit note is created according to the settings for the valuation of offcuts.
The small offcut (2) is valued at 30 %, i.e. € 3 / m². The offcut of around 0.5 m² thus has a value of € 1.51.
The large offcut (3) is valued at 80 %, i.e. € 8 / m². The 2.1 m² offcut therefore has a value of €16.80.
The material costs are therefore made up of the costs for the board € 31.25 (1) and the credits for the small offcut € 1.51 and the large offcut (3) € 16.80. This results in material costs of € 12.93.
The large offcut is subsequently reused in an order.
In the example, the optimization results in a small and a large offcut.
Overview of the cost of the board (1) and the evaluation of the offcuts produced after cutting (2&3).
The imputed costs for the large offcut amount to € 16.80 (80% of € 10 / m² x 2.1 m²) based on the credit note from the previous order. There are two small offcuts, which are credited as before. The total material costs therefore amount to € 12.06.
intelliDivide shows the material costs at a glance (1).
The material costs are made up of the costs for the board (1) and the credits for small (2) and large offcuts (3).
Setting the minimum size of offcuts
Minimum size of offcuts: Offcuts corresponding to this size are managed in the manual offcut inventory. Smaller parts are treated as scrap.
Minimum size of large offcuts: Offcuts that meet or exceed this size will be returned to the horizontal storage system.
Offcut allowance: The lower the value in the "Offcut allowance" field, the more likely it is that an offcut will be taken into account during the next optimization.
Setting the minimum size for offcuts
In the "Offcut processing" tab, you can activate the option to "Reduce offcuts" so that they can be shredded according to the set values. In addition to the feed rate and tool number, you can also set the grid width in mm here.
Offcut reducing in woodWOP
Under the "offcut sizes" tab in the "Machine parameters" dialog, the minimum sizes of the manual offcut sizes (minimum length, minimum width and minimum usable area) can be stored. In this case, the software will also suggest default values that can be modified.
Setting the offcut sizes for nesting
As an alternative to the settings in the machine parameters within intelliDivide, you can configure material-dependent parameters for offcuts in the "Optimization" area of the materialManager. To do so, enable the option "Use of material dependent parameters".
Material-dependent optimization parameters for offcuts
You can group materials based on their common properties and set material-dependent parameters for offcuts in the materialManager.
This grouping makes it possible to define different minimum sizes for offcuts depending on the properties of a material. For example, for inexpensive materials, the creation of offcuts can be avoided as the cost is disproportionate to the value of the material. On the other hand, very small offcuts may be allowed for expensive materials, where the extra effort is worthwhile.
Efficiency is optimized by reducing costs and effort.
For “Expensive materials”, the production of small offcuts may also be permitted.
The generation of offcuts can be completely deactivated for “Inexpensive material”.
When the option is activated, the material group for each material is displayed under the 'Boards' tab in the 'Offcuts' column (2). This column can be added through the table settings (1). In case adjustments are necessary, you can directly navigate to the group in materialManager (3).
Display of the material group for offcuts in intelliDivide