Optimization of Digitized Cast Extrusion Molds of Sand Molds Based on Retrieval Algorithm

摘要

SUMMARY OF THE INVENTION The present invention provides a method for optimizing digital extrusion of semi-molded sand molds based on a retrieval algorithm, comprising: dividing a semi-molded region of a three-dimensional model of sand mold CAD, and three-dimensional sand mold CAD for semi-molded sand Obtaining the cavity surface function of the model, establishing the flexible extrusion array envelope volume optimization target function, determining the effective optimization interval R, and finding the cavity position of the three-dimensional model of the sand mold CAD to the initial position of the search. Parallel translation, determining the search direction, determining the search stride in the x and y directions respectively, performing an overall search within the effective optimization interval R and comparing the flexible extrusion array envelope volume values the V (x, y) the stored position and facing to _max (x, y) and the completion of the step, the search for storing a _max and the cavity of the three-dimensional CAD model of a sand mold Values (x, y) includes the step of moving parallel to the _max shifts to the flexible array extruded shape adjusting step. By applying the method, the cavity of the sand mold semi-formed within the margin of error can be as close as possible to the cavity of the sand mold.