AutoCAD 2013 tutorial book pdf-4

By | May 25, 2014

AutoCAD 2013 tutorial bookRandy H. Shih (Oregon Institute of Technolog)

Cover book - AutoCAD 2013 tutorial 2D Foundational

OVERVIEW

Learning to use a AutoCAD system is similar to learning a new language. It is necessary to begin with the basic alphabet and learn how to use it correctly and effectively through practice. This will require learning some new concepts and skills as well as learning a different vocabulary. Today, the majority of the Mechanical CAD systems are capable of creating three-dimensional solid models. Nonetheless, all CAD systems create designs using basic geometric entities and many of the constructions used in technical designs are based upon two-dimensional planar geometry. The method and number of operations that are required to accomplish the basic planar constructions are different from one system to another. In order to become effective and efficient in using a CAD system, we must learn to create geometric entities quickly and accurately. In learning to use a CAD system, lines and circles are the first two, and perhaps the most important two, geometric entities that one should master the skills of creating and modifying. Straight lines and circles are used in almost all technical designs. In examining the different types of planar geometric entities, the importance of lines and circles becomes obvious. Triangles and polygons are planar figures bounded by straight lines. Ellipses and splines can be constructed by connecting arcs with different radii. As one gains some experience in creating lines and circles, similar procedures can be applied to create other geometric entities. In this chapter, the different ways of creating lines and circles in AutoCAD 2013 are examined.

CONTENT

Section 1: Controlling the Display in Drawings

  1. Precision
  2. Zoom Extent
  3. Drawing LIMITS
  4. Status Bar
  5. GRID Display
  6. PAN Realtime

Section 2: Creating Basic Drawings

  1. Format
  2. Units Setup
  3. LINE command
  4. Coordinates
  5. Interactive Input method
  6. SNAP Option
  7. World space
  8. User coordinate system
  9. World coordinate system
  10. UCS icon Display
  11. TTR, circle
  12. Relative Coordinate
  13. Coordinate systems
  14. Cartesian coordinate system
  15. Absolute coordinates
  16. Positions, defining
  17. LINE, Close option
  18. CIRCLE command
  19. TTT, circle
  20. ARC command

Section 3: Manipulating Objects

  1. ERASE command
  2. Selection window

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