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Based on Pro / Engineer Design and Application of the fast reverse

Product modeling, you can also switch to a four-view layout, user-edited from multiple angles and observation geometry. (1) image acquisition has reflected the true appearance of the shape of the clear physical picture is the reverse in the style of product under design. Photo collection reflects the principles and components are more similar to the drawings, generally with three or more pictures (including a positive image, side image, overlooking the image,mac makeup wholesale, etc.), more complex kind, the more pictures needed; the other hand, The more pictures, then reverse the same product modeling more accurate. Figure 1 shows the three images for the sample surface to be the reverse of the mouse to achieve three pictures, namely a positive image, side image, overlooking the image. (2) pictures in the style of input conditions, click the shape】【a】【tracking sketch, respectively, in the pop-up dialog box, select the front, right and top three base-level input phase should be the picture, and by adjusting the picture size ratio and position, complete the picture of the location,magasin abercrombie, size and location of the right picture is the same style key to success. Here, you can also move the base level through the establishment or to insert more pictures. Figure 2 has been inserted a good picture, three pictures were placed on the surface of the three benchmarks. Figure 1 View photo map of the mouse c ■ o (3) trace the sketch in the style environment, according to the picture profile to create shape curve, consists of three curves, namely, plane curve, a free curve,gorras ed hardy, COS curve (the curve on the surface.) Activities by setting the plane, flexible use of these curves, fast and accurate adjustment of the curve fitting. In this paper, the reverse surface of the mouse model, according to the shape of the mouse, using the first curve, plane curve. Thus, the first image contour tracking based on the input sketch (ie, by capturing the image of the boundary points to create curve) out of the three mouse contour; then you can change the shape of the mouse cross-section, flexible, cross-sectional curves drawn at different positions. As the mouse is symmetrical shape, where only the left half of the reverse design of the mouse, the last way you can quickly get through the right half of the mirror surface. Figure 3 shows the shape of curve drawing. (4) create a curved surface shape of curves, Figure 4, after the image obtained for the mixed boundary surface. Shape curve in Figure 3 ~ ~. . 'A ~ ~ ~ Figure 4,mulberry helsinki, the surface of the initial completion of the mouse model (5) surface treatment by surface treatment, are the ideal surface shape, which will benefit subsequent model generation, poor surface quality of the generated model could lead to failure, and This is the reverse design of the most difficult. The quality of the model the appearance of smooth, continuous requirement should be applied curvature, slope 32www. mould-cn. net analysis tools such as repeated analysis, to observe and adjust the curve (surface), to obtain reliable surface. Finally, the merger of multiple surfaces can be curved to form a surface of several independent groups, can also draw the cutting surface, cutting the excess surface, make the model more realistic and beautiful. Figure 5 shows the Gaussian curvature can be seen, the entire surface are guaranteed a good smooth, continuous, that is, the above-mentioned continuous G2 (curvature continuous) requirements; mouse buttons at the same time you can see the outside of the shape changed greatly, and thus the curvature changed significantly. (6) model the appearance of the processing and rendering the surface of the model in Figure 5 Figure 6, the Gaussian curvature of the surface model of the mouse to complete 4 Conclusion The article has pictures and flexible application of CAD software, rapid completion of the reverse surface of the mouse model. Established through the reverse design of the surface model can be directly used for processing or generating NC code for mold processing. This article is only done through the pictures of the surface of the mouse model of reverse, the accuracy of the model difficult to have both, here is the only imaging technology through the preliminary study of a reverse design, and also to provide a reverse design more innovative and complete Reverse design ideas quickly. At present our industry is still in development stage, design or copy a variety of products, mainly based on physical model of the main basis for design and production, and sometimes can only provide the pictures, from this point of view, such an attempt to still important practical significance. References [1】 Cao Dehe whole, Tang Dingyong. Pro/EngineerWildfire2.0 Chinese version of surface and reverse engineering [M】. Electronics Industry Press, 2004.10 [2】 Park Phase Zhang Jianguo and other text. Reverse engineering in the development and application of mold. U】 light vehicle technology. 2004 (6): 11 ~ 13 [3】 Hai, Wang Linxiang and so on. Several reverse engineering methods of analysis of free surface reconstruction. U】 Kunming University of Technology. 2001,26 (4) :81-84 a shout

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