It also serves as a visual reference that marks the working area. Setting the Drawing Limits controls the extents of the display of the grid. Pick OK to exit the Drawing Units dialog box.ĭrawing Area Setup Next, we will set up the Drawing Limits by entering a command in the command prompt area. Set the Precision to two digits after the decimal point as shown in the above figure.
This will set the measurement to the default English units, inches.ĥ. In the Drawing Units dialog box, set the Length Type to Decimal. On your own, examine the other settings that are available.Ĥ. Confirm the Length Type is set to Decimal.ģ.
Click on the Length Type option to display the different types of length units available. Note that many of the menu items listed in the pull-down menus can also be accessed through the Quick Access toolbar and/or Ribbon panels.Ģ. In the Menu Bar select: The AutoCAD Menu Bar contains multiple pull-down menus, where all of the AutoCAD commands can be accessed. We should determine the system of units within the CAD system before creating the first geometric entities.ġ. The Menu Bar provides access to all AutoCAD commands.ĭrawing Units Setup Every object we construct in a CAD system is measured in units. If necessary, click on the down-arrow in the Quick Access bar and select Show Menu to display the AutoCAD Menu Bar.
In our example, AutoCAD opened the graphics window using the default system units and assigned the drawing name Drawing1.Ģ. Note that AutoCAD automatically assigns generic name, Drawing X, as new drawings are created. Once the program is loaded into memory, the AutoCAD 2012 drawing screen will appear on the screen. Select the AutoCAD 2012 option on the Program menu or select the AutoCAD 2012 icon on the Desktop. In this chapter, the different ways of creating lines and circles in AutoCAD 2012 are examined. As one gains some experience in creating lines and circles, similar procedures can be applied to create other geometric entities. Ellipses and splines can be constructed by connecting arcs with different radii. Triangles and polygons are planar figures bounded by straight lines. In examining the different types of planar geometric entities, the importance of lines and circles becomes obvious. Straight lines and circles are used in almost all technical designs. 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. In order to become effective and efficient in using a CAD system, we must learn to create geometric entities quickly and accurately. The method and number of operations that are required to accomplish the basic planar constructions are different from one system to another. 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. Today, the majority of the Mechanical CAD systems are capable of creating three-dimensional solid models. This will require learning some new concepts and skills as well as learning a different vocabulary.
#AUTOCAD 2009 TUTORIAL FIRST LEVEL 2D FUNDAMENTALS HOW TO#
It is necessary to begin with the basic alphabet and learn how to use it correctly and effectively through practice. IntroductionLearning to use a CAD system is similar to learning a new language. Section 3: Manipulating ObjectsERASE command. 1-17 Absolute coordinates.1-17, 1-18 Positions, defining.1-18 LINE, Close option. Section 2: Creating Basic DrawingsFormat. Section 1: Controlling the Display in DrawingsPrecision.1-4 Zoom Extent.1-5 Drawing LIMITS. Schroff Development Corporationselected tutorials and exercisesĬreate and Save AutoCAD drawing files Use the AutoCAD visual reference commands Draw, using the LINE and CIRCLE commands Use the ERASE command Define Positions using the Basic Entry methods Use the AutoCAD Pan Realtime optionĪutoCAD Certified Associate Examination Objectives CoverageThis table shows the pages on which the objectives of the Certified Associate Examination are covered in Chapter 1.
0 kommentar(er)
