Based On Pro / E System, Personalized Three-dimensional Modeling Of The Human Skeleton And Its Cnc Machining

It has always been the focal point to study the building and processing of the Individual of the human skeleton model. Quality of the model of human bone has a direct effect on the quality of medical treatment. Because of the feature of the complexity and irregularity of the human bone, the 3D modeling and machining of the human bone model becomes an urgent problem to be solved.This thesis regards human part femur as an object, adopts CT images of human bone, accomplishes the 3D model and machining of the model of human bone by using Pro/Engineer software and DMU 70V machining center.During the 3D modeling of the human bone, acquiring the 2- dimensional image from CT scanning, a series of discrete points are obtained through image processing. These discrete points are used as control points for interpolation and fitting, forming a group of curves, i.e., the profile curves of the femur. Then, these curves are fitted to form an ideal surface of the femur. Finally, this surface is adopted to generate a CAD solid model for NC machining.To the numerical control programming of the human skeleton, use Pro/NC module, has worked out the machining procedure of the human femur. To carrying on rough machining with " Volume Milling " the other outline of the human femur, carry on finish machining with " Surface Milling ".According to the characteristic of DMU 70V machining center, this thesis deals with the procedure after configuring its special-postprocessor, and the code (G-code) generated in Pro/Engineer system, which can be used in this machining center directly.