Table 7 Constraints between punches for example 3.

From: Automatic strip layout design in progressive dies using the grouping genetic algorithm

Constraint

Punches with this constraint

Intersection

{P1,P5}, {P2,P5}, {P3,P5}, {P4,P5}, {P1,P6}, {P2, P6}, {P3, P6}, {P4, P6}, {P5, P6}

Priority

–

Assignment in the First station

P1,P2

Assignment in the Last station

P6