AutoCad tutorial part:1(Starting Up, AutoCAD Drawing Units Setup,Drawing Area Setup)

AutoCad tutorial part:1(Starting Up, AutoCAD Drawing Units Setup

Hello, guys I am here for teach you AutoCAD .lets read my post and learn AutoCAD.

Learning to use a CAD 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® 2012 are examined.

Starting Up AutoCAD® 2012:

1. Select the AutoCAD 2012 option on the Program menu or select the

AutoCAD 2012 icon on the Desktop.

Once the program is loaded into memory, the AutoCAD® 2012 drawing

screen will appear on the screen.

Note that AutoCAD automatically assigns generic name, Drawing X, as new

drawings are created. In our example, AutoCAD opened the graphics window using

the default system units and assigned the drawing name Drawing1.

2. If necessary, click on the down-arrow in the Quick Access bar and select

Show Menu to display the AutoCAD Menu Bar. The Menu Bar provides

access to all AutoCAD commands.

Drawing Units Setup

Every object we construct in a CAD system is measured in units. We should

determine the system of units within the CAD system before creating the first

geometric entities.

1. In the Menu Bar select:

[Format]  [Units]

 The AutoCAD Menu Bar contains multiple pull-down

menus, where all of the AutoCAD commands can be

accessed. 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.

2. Click on the Length Type

option to display the different

types of length units

available. Confirm the Length

Type is set to Decimal.

3. On your own, examine the other settings that are

available.

4. In the Drawing Units dialog box, set the Length Type to Decimal. This will

set the measurement to the default English units, inches.

5. Set the Precision to two digits after

the decimal point as shown in the

above figure.

6. Pick OK to exit the Drawing Units

dialog box.

Drawing Area Setup:

 Next, we will set up the Drawing Limits by entering a command in the

command prompt area. Setting the Drawing Limits controls the extents of the

display of the grid. It also serves as a visual reference that marks the working

area. It can also be used to prevent construction outside the grid limits and as a

plot option that defines an area to be plotted/printed. Note that this setting does

not limit the region for geometry construction.

1. In the Menu Bar select:

[Format]  [Drawing Limits]

2. In the command prompt area, the message “Reset Model

Space Limits: Specify lower left corner or [On/Off]

<0.00,0.00>:” is displayed. Press the ENTER key once to

accept the default coordinates <0.00,0.00>.

3. In the command prompt area, the message “Specify upper right corner

<12.00,9.00>:” is displayed. Press the ENTER key again to accept the default

coordinates <12.00,9.00>.

AutoCAD Fundamentals 1-7

4. On your own, move the graphic cursor near the upper-right comer inside the

drawing area and note that the drawing area is unchanged. (The Drawing

Limits command is used to set the drawing area, but the display will not be

adjusted until a display command is used.)

5. Inside the Menu Bar area

select:

[View]  [Zoom]

[All]

The Zoom All

command will adjust the

display so that all objects

in the drawing are

displayed to be as large

as possible. If no objects

are constructed, the

Drawing Limits are used

to adjust the current

viewport.

6. Move the graphic cursor near the upper-right comer inside the drawing area and

note that the display area is updated.

7. Hit the function key [F7] once to turn off the display of the Grid lines.

>>>Note that function key [F7] is a quick key which can be used to quickly toggle

on/off the grid display.