Üç görünüşü verilen prizmatik parça çizimlerinden 3B' lu katı modellerin elde edilmesi

Bu çalışmada, 2B'lu çizimlerden otomatik olarak 3B'lu katı modellerin elde edilmesi için bir program geliştirilmiştir. Geliştirilen program kullanıcı tarafından AutoCAD ortamında oluşturulan 2B'lu prizmatik parçaların görünüşlerini DXF formatında kaydederek bir veri tabanı oluşturmaktadır. Çizime ait geometrik bilgiler program tarafından yorumlanarak prizmatik parça üzerindeki unsurlar (delik, cep, vb.) dönel ve lineer süpürme operasyonları ile oluşturulmaktadır. Aynı zamanda görünüşlerin dış profil çizgileri komşu görünüşlerdeki bilgiye göre lineer süpürme operasyonu ile süpürülmektedir. Bu süpürülen katılardan önceden oluşturulmuş unsurlar çıkarılmaktadır. Son olarak bu katılar bir araya getirilerek 3B'lu katı modeller elde edilmektedir. Programlama dili olarak VisualLISP programlama dili kullanılmıştır.

Obtaining 3D solid models from drawings of prismatic parts with three orthographic views

In this study, a program for automatically reconstruction of 3D solid models from 2D drawings has been developed. Developed program generates a database, saving in DXF format of the orthographic views of 2D prismatic parts drawn by the user in AutoCAD. Having been evaluated the geometric information by the program, features (hole, pocket, etc.) in a prismatic part are obtained by rotational and linear sweeping operations. Contour of views also is extruded by linear sweeping operation according to the information in the neighbouring views. Features perviously generated are subtracted from this sweeping solids. Finally 3D solid models are obtained by combining of these solids. VisualLISP was used as a programming langauage.

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1. Gülesin, M., 1997, "MCAD-2 ½ Boyutlu Bilgisayar Destekli Tasarım Programı", İ.T.Ü. Makine Fakültesi 1. Makine Mühendisliği Kongresi, Sayfa 275-283, İstanbul.
2. Woo, T. C., Hammer, J. M., 1977, "Reconstruction Of Three Dimensional Designs From Orthographic Projections", Proc. Ninth CIRP Conference, pp. 247-255.
3. Haralick, R. M., Queeney, D., 1982, "Understanding Engineering Drawings", Computer Graphics and Image Processing, Vol. 20, pp. 244-258.
4. Sakurai, H., Gossard, D. C., 1983, "Solid Model Input Through Orthographic Views", ACM/SIGGRAPH, Vol. 17, pp. 243-252.
5. Preis, K., 1984, "Constructing The Solid Representation From Engineering Projections", Computers and Graphics, Vol. 8, pp. 381-389.
6. Nagendra, I. V., Gujar, U. G., 1988, "3-D Objects From 2-D Ortoghraphic Views – A Survey", Comput and Graphics, Vol. 12, No. 1, pp. 111-114.
7. Richards, T. H., Onwubolu, G. C., 1986, "Automatic Interpretation Of Engineering Drawings For 3d Surface Representation In Cad", Computer Aided Design, Vol. 18, No. 3, pp. 156-160.
8. Ghosh, S. K., Li, Y.B., Munns, A. K., Wang, X. C., 1995, "Generating Solid Models From Two– Dimensional Representations", Journal of Materials Processing Tecnology, pp. 211-217.
9. Gujar, U. G., Nagendra, I. V., 1989, "Construction Of 3d Solid Objects From Orthographic Views", Comput and Graphics, Vol. 13, No. 4, pp. 505-521.
10. Wang, W., Grinstein, G. G., 1993, "A Survey Of 3d Solid Reconstruction From 2d Projection Line Drawings", Computer Graphics Forum, Vol. 12, No. 2, pp. 137-158, Lowell.
11. Chen, Z., Perng, D. B., Chen, C. J., Wu, C. S., 1992, "Fast Reconstruction Of 3d Mechanical Parts From 2d Orthographic Views With Rules", Int. J. Computer Integrated Manufacturing, Vol. 5, No. 1, pp. 2-9.
12. Yan, Q. W., Chen, C. L. P., Tang, Z.,1994, "Efficient Algorithm For The Reconstruction Of 3d Objects From Orthographic Projections", Computer Aided Design, Vol. 26, No. 9, pp. 699-717.
13. Watanabe, T., Tashiro, A., Fujii, S., 1995, "Estimation Of Three – Dimensional Objects From Orthographic Views With Inconcistencies", Comput and Graphics, Vol. 19, No. 6, pp. 815-829.
14. You, C. F., Yang, S.S., 1996, "Reconstruction Of Curvilinear Manifold Objects From Orthographic Views", Comput and Graphics, Vol. 20, No. 2, pp. 275-293.
15. Masuda, H., Numao, M., 1997, "A Cell – Based Approach For Generating Solid Objects From Orthographic Projections", Computer Aided Design, Vol. 29, No. 3, pp. 177-187.
16. Tanaka, M., Iwama, K., Hosada, A., Watanabe, T., 1998, "Decomposition Of A 2d Assembly Drawing İnto 3d Part Drawings", Computer Aided Design, Vol. 30, No. 1, pp. 37-46.
17. Idesawa, M., 1973, "A System To Generate A Solid Figure From Three View", Bulletin of JSME, Vol. 16, pp. 216-225.
18. Lafue, G., 1976, "Recognition Of Three Dimensional Objects From Orthographic Views", ACM/SIGGRAPH, pp. 103-108.
19. Preis, K., 1981, "Algorithms For Automatic Conversion Of A 3 View Drawing Of A Plane Faced Part To The 3-D Representation", Computers in Industry, Vol. 2, pp. 133-139.
20. Markowsky, G., Wesley, M. A., 1981, "Fleshing Out Projections", IBM Journal Research and Development, Vol. 25, pp. 934-954.
21. Lequette, R., 1988, "Automatic Construction Of Curvilinear Solids From Wireframe Views", Computer Aided Design, Vol. 20, No. 4, pp. 171-180.
22. Shin, B. S., Shin, Y. G., 1998, "Fast 3d Solid Model Reconstruction From Orthographic Views", Computer Aided Design, Vol. 30, No. 1, pp. 63-76.
23. Aldefeld, B., 1983, "On Automatic Recognition Of 3d Structures From 2d Representations", Computer Aided Design, Vol. 15, No. 2, pp. 59-72.
24. Bin, H., 1986, "Inputting Constructive Solid Geometry Representations Directly From 2d Orthographic Engineering Drawings", Computer Aided Design, Vol. 18, No. 3, pp.147-155.
25. Chen, Z., Perng, D. B., 1988, "Automatic Reconstruction Of 3d Solid Objects From 2d Orthographic Views, Pattern Recognition", Pattern Recognition Society, Vol. 21, No. 5, pp. 439-449.
26. Shum, S. S. P., Lau, W. S., Yuen, M.M.F., Yu, K.M., 1997, "Solid Reconstruction From Orthographic Opaque Views Using Incremental Extrusion", Comput and Graphics, Vol. 21, No. 6, pp. 787-800.

ISSN: 1302-0056
Yayın Aralığı: Yılda 5 Sayı
Başlangıç: 1998
Yayıncı: KARABÜK ÜNİVERSİTESİ

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Üç görünüşü verilen prizmatik parça çizimlerinden 3B' lu katı modellerin elde edilmesi

Adem ÇİÇEK, Mahmut GÜLESİN