Computer-Assisted Methods for Defining 3D Geometric Structure of Mechanical Parts
In a mechanical CAD/CAM system the 3D geometric structure of parts have to be specified. There are two classes of methods for specifying the geometry of the parts, i.e., 2D-oriented and 3D-oriented. In the first class we examine the methods of representing the mechanical part by an engineering drawing with the top, front, and side views in orthographic projection. We shall propose a system which automatically interprets the engineering drawing by employing image processing techniques and derives the 3D geometry of the part from the 2D views.
Next, the class of 3D-oriented methods for part geometric modeling if reviewed. In this class we shall provide a system to facilitate the user to creat and edit a 3D part, with the aid of both wire frame and shaded displays.
KeywordsIntersection Line Editing
Unable to display preview. Download preview PDF.
- M. Idesawa, T. Soma, E. Goto, and S. Shibata, “Automatic input of line drawing and generation of solid figure from three-view data,” in Proc. Int. Comput. Symp., vol. 2, pp. 304–311, 1975.Google Scholar
- G. Lafue, “Recognition of three-dimensional objects from orthographic views,” in Proc. SIGGRAPH, pp. 103–108, 1976.Google Scholar
- A. A. G. Requicha and H. B. Voelcker, “Solid modeling: a historical summary and contemporary assessment,” IEEE CG andamp; A, pp. 9–23, March 1982.Google Scholar
- A. A. G. Requicha and H. B. Voelcker, “An introduction to geometric modeling and its applications in mechanical design and production,” The University of Rochester, Rochester, NY, Tech. Rep., Chapter 5, 1977.Google Scholar
- A. A. G. Requicha, “Representations for rigid solids: theory, method, and systems,” Computing Surveys, vol. 12, No. 4, pp. 437–465, Dec. 1980.Google Scholar
- J. W. Boyse and J. E. Gilchrist, “GMsolid: interactive modeling for design and analysis of solids,” IEEE CG and; A, pp. 27–40, March 1982.Google Scholar
- R. Hillyard, “The build group of solid modelers, ”IEEE CG and A pp; A, pp. 43–52, March 1982.Google Scholar
- A. Baer, C. Eastman, and M. Henrion, “Geometric modelling a survey,” CAD, vol. 11, No. 5, pp. 253–272, Sept. 1979.Google Scholar
- I. C. Braid, “The synthesis of solids bounded by many faces,” Commun. Assoc. Comput. Mach., pp. 209–216, April 1975.Google Scholar
- M. A. Wesley, T. Lozano-Perez, L. I. Lieberman, M. A. Lavin, and D. D. Grossman, “A geometric modeling system for automated mechanical assembly,” IBM J. Res. Develop., pp. 64–74, Jan. 1980.Google Scholar
- D. D. Grossman, “Procedural representation of 3D objects,” IBM J. Res. Develop., pp. 582–589, Nov. 1976.Google Scholar
- H. B. Voelcker and A. A. G. Requicha, “Geometric modeling of mechanical parts and processes,” Computer, pp. 48–57, Dec. 1977.Google Scholar
- J. D. Foley and A. Van Dam, Fundamentals of Interactive Computer Graphics, Massachusetts: Addison-Wesley, 1982.Google Scholar
- S. J. Joe, “3D reconstruction and graphic display of mechanical parts from orthographic drawings,” Master’s thesis, Inst. of Comput. Eng., National Chiao Tung University, Taiwan, R.O.C., 1983.Google Scholar
- C. Y. Lo, Z. Chen, and D. B. Perng, “A CAD/CAM system for mechanical part design and production,” in Proc. Int. Conf. Adv. Automation, pp. 266–272, 1983.Google Scholar