Description and definition of minable and maxable on a Stuga flowline. Why and how this leads to larger trim and waste amounts at the start and end of the bar
Auteur Gareth Green | Dernière modification 2/09/2022 par Gareth Green en cours de rédaction ⧼frevu-button-review-label⧽
Description and definition of minable and maxable on a Stuga flowline. Why and how this leads to larger trim and waste amounts at the start and end of the bar
minable, maxable, optimising, trim Minable_and_Maxable_-_Operations_at_the_ends_of_the_bar_Annotation_2019-09-20_124959.jpg
Loading and Optimising
A major feature of the flowline software is its ability to optimise a batch for the best use of profile. This is absolutely necessary on the flowline because:
Operations at the end of a bar
The flowline cannot machine anything where the gripper is, or at the very end of the bar. To cope with this, the software looks at each piece to see if there are any operations near the ends – i.e. if this piece was at the end, the operation would be unmachinable.
The unmachinable area at the gripper end is defined by the “minable” parameter in sparams.mul, the area at the end of the bar is defined by the “maxable” parameter.
If there is an operation on a piece that is in the minable / maxable area, the end prep is modified to a “mechanical” prep.
Square Cut | | | Becomes | s |
Mitre Cut | \ | Becomes | m |
Mitre Cut | / | Becomes | i |
Arrow Head Cut | > | Becomes | a |
In the above diagram:
1 | \ / | Becomes | m / |
2 | \ / | Becomes | \ / |
3 | \ / | Becomes | \ i |
On optimisation, the optimiser sees that there is a large waste associated with putting a “mechanical” prep at the end of a bar, and will therefore try a different combination. If this is not possible (e.g. on a short offcut), the optimiser will allow for the waste at the start or end of the bar.
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