Preprocessing, layout and production optimization methods for nesting and shear cutting of a defective plate

A layout method for nesting and shear cutting of a defective plate comprising the following steps:

• acquiring specification information of each finished product for products to be processed;
• acquiring parameter information of each small plate;
• setting decision variables relating to layout modes of each small plate, and establishing constraints among the decision variables, the specification information and the parameter information;
• and
• finding out layout modes for each small plate that satisfies the constraints;
• wherein the specification information includes a width of finished product;
• and wherein the parameter information includes a width of small plate, a maximum defect width on the working side of small plate and a maximum defect width on a driving side of small plate;
• and wherein the decision variables include strip number of each finished product on each small plate, and the constraints include a first constraint corresponding to the width of small plate;
• and
• wherein the layout method further comprises a preprocessing method that comprises the following steps:
• acquiring plate information of the plate, wherein the plate information includes defect information and plate dimension information;
• making an electronic defect map based on the defect information and the plate dimension information, and partitioning out a region available for nesting and shear cutting;
• and
• partitioning the plate to obtain small plates according to the region available for nesting and shear cutting.