| It is important that the intersecting lines of square tube is the processing and manufacturing in research areas, along with the tube structure of the increasingly widespread application. In accordance with previous graphics artificial contour cutting out the intersecting lines of the shape of space could no longer meet the needs of society and the market. Interface traditional quality assurance method is not only inefficient, low precision machining and workpiece vulnerable, high reject rate. However, in high-tech fields, such as marine engineering, aerospace engineering, and the daily life of the common area of construction steel, there are many pieces of the management of intersecting, precision machined intersection of the workpiece geometry can be put into production, the reliability of security can be assurence. For the present to be able to control, such as the cone-shape parts of the Multi-angle intersection of cutting equipment still needs further research and development, It is necessary that the mathematical model is proposed the intersecting and cutting of tube based on square types.This paper used to the conditions typical of one of the main subjects, and the establishment of a governing party with the governing party, the square tube and oneself intersection, the square tube and conical intersection mathematical model, and on this basis, VC＋＋for a three-dimensional space tube cutting intersecting path of static simulation, achieved a tube intersecting lines cutting trajectory of three-dimensional graphics. Meanwhile, the paper also CNC Machining of Pro/NC as the core module, clarify the application of Pro/NC dynamic simulation module design the basic process, Finally, the establishment of the mathematical model-based simulation of intersecting lines cutting tool path. Tube cutting enable the machining process more intuitive, as well as analysis the processing of tube intersecting cutting edge of change by specific issues.
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