Patent ID: 6690990
Filing Date: 2004-02-10
Classification: B27G,G06Q,Y10T

Abstract:
A method of optimizing a layout of selected parts to be cut from a piece of raw material with respect to first and second orthogonal reference axis, using data representing geometric and defect-related characteristics of said piece and data representing geometric and grade characteristics of a set of parts to be cut, said method comprising the steps of:i) defining a subset of said set of parts characterized by a predetermined grade value and associated with a predetermined group of first dimension values defined with respect to said first axis; ii) generating data defining an arrangement of subdivided piece surface sections to be obtained through a primary cutting operation with respect to said second reference axis and according to one or more of said first dimension values; iii) generating data defining one or more subsections included in each said piece surface section according to said geometric and defect-related characteristics of said piece; iv) generating data defining for each said subsection a plurality of arrangements of parts to be included therein and selected from said subset of parts, to be obtained through a secondary cutting operation with respect to said first reference axis; v) estimating yield values associated with said arrangements of parts; vi) comparing said yield values to select one of said arrangements of parts having a highest yield value; vii) estimating a basic yield value for said arrangement of subdivided piece surface sections; viii) repeating said steps ii) to vii) for one or more new arrangements of subdivided piece surface sections to estimate corresponding basic yield values; and ix) comparing all said basic yield values one with another to select said arrangement of subdivided piece surface sections associated with said arrangements of parts providing a maximal basic yield value to be included in said optimized layout of selected parts to be cut.