Method of generating numerical control codes directly based on industrial computed tomography image
Sheng Luo · Computer Integrated Manufacturing Systems · 2008
Considering the product with simple surfaces only by direct copy,a method of generating Numerical Control(NC) codes based on industrial Computed Tomography(CT) image was proposed.In this method,edge extraction and contour tracking for slice image of product were conducted firstly,and B-spline curve was applied to contour fitting.Then,regional machining and filling technology in arbitrary plane was introduced to generate tool-paths slice by slice linking each other orderly.Finally,NC codes were generated automatically.In the B-spline curve fitting,an approach of selecting control points based on featured points extraction and line type's recognition was proposed to improve fitting accuracy.The method of judging relationship between the contour islands in monolayer slice was improved to increase the rate of discrimination accuracy in the procedure of transforming NC codes.Furthermore,a software system generating NC codes was developed.After NC codes generated by the software system were input to the milling-emulation software,the validity and feasibility of the method were verified.