Computer-Assisted Methods for Defining 3D Geometric Structure of Mechanical Parts

  • Z. Chen
  • D. B. Perng

Abstract

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.

Keywords

Intersection Line Editing 

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Copyright information

© Plenum Press, New York 1985

Authors and Affiliations

  • Z. Chen
    • 1
  • D. B. Perng
    • 1
  1. 1.Institute of Computer EngineeringNational Chiao Tung UniversityHsinchuTaiwan, R.O.C.

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