The Results Sheet consists of a spreadsheet  listing the calculated cutting patterns and a tool bar at the bottom to set the rounding, filtering and sorting of these patterns. 

 

Tip: Right click anywhere in the spreadsheet  to display a context menu that contains commonly used options.

 

Each cutting pattern is described in the following sections:

 

Pattern: Shows the consecutive number of the pattern and the material used.

 

Percentages: Yield, Reusable Offcut and Waste percentages. Note: The yield percentage is calculated hardly, that is, it will not include either reusable offcut or cut-width-option (considered waste) areas. This way, the sum of  the above three percentages must be 100%.

 

Repetition: The pattern multiplicity, that is, the number of times it must be repeated. Both a Theoretic value for the theoretical solution and a Real value for the integer solution are showed.

 

Parts/Pattern: This section contains as many columns as parts are in the launch. The value in each column indicates the number of times the corresponding part is repeated in the pattern.

 

The last three rows of the spreadsheet show totals for both solutions.

 

When analyzing results keep in mind the following:

 

· Patterns with zero real repetition are to be considered out of the corresponding integer solution.

· The total real repetition indicates the total amount of material used.

· The total theoretic yield is an upper bound of the maximum reachable yield in the integer solution. For a single material, the total theoretic repetition is a lower bound of the optimum real repetition. Therefore, whenever  the total theoretic repetition rounds up to the total real repetition, the integer solution is also optimum.

 

Note: This is true for the rounded-exact integer solution which is the feasible integer solution according to the mathematical model. Both rounded-up and rounded-down solutions could have either greater or lesser yields. Both of them are optimum only for the part quantities that they  actually obtain which are not  in general the requested ones.

 

· A low yield value is the indication that to get a better optimization you need:

 

       Include more parts in the launch.

       Change the dimensions of the materials.

       Modify the cutting options.

 

· The total yield percentage is calculated by:

 

       PartsTotalArea/MaterialTotalArea = SUM(PatternPartsArea(i)*PatternRepetition(i))/SUM(PatternMaterialArea(i)*PatternRepetition(i))

 

           for i=1,2,...,number of patterns

 

which does not coincide in general with the average of the values shown in the column. Analogously for offcut and waste totals.

 

· Each part total is calculated by summing the product

 

    <pattern multiplicity>*<part multiplicity>

 

for each pattern and should coincide with the corresponding request in both the theoretical solution and the rounded-exact integer solution provided enough material is available.

 

· The last row shows the portion contributed by each part to the real total yield.

 

· Both repetitions and totals in the integer solution are modified according to the rounding selected in the Rounding combo.

Corte 3 Professional Edition

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4.1

Analyzing Results

4

The Results Sheet

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