Lab 1 Autocad

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COMPUTER AIDED DESIGN

UNIT 1 INTRODUCTION

Objectives

At the end of the lab student should be able to :

i. Explain CAD.

ii. Launching CAD.

iii. Identify Functions and Accelerator keys.

1.0 INTRODUCTION

CADis the short term for Computer Aided Designing or sometimes spelled as CADD which refers toComputer Aided Designing and Drafting. Its the process of conversion of design data into digital

format that enable the data handling easier, quicer and safer. !hrough CAD technolog", almost an" t"pe

of designs and drawings can be done. Designers from various fields such as #ngineering, Architecture,

$ashion, !e%tile, and &raphics are now da"s highl" dependent on CAD technologies.

CAD is a computer'assisted technolog", used for maing various t"pes of graphics designs. It has

inherited its base technolog" from Co'ordinate &eometr" and (athematics. $urther developments have

been made to suit different domains and their related design requirements. !he basic entities used in an"

CAD environment are point, line, pol"gon and te%t. !hese entities have been further modified to createcircle, ellipse, parabola, h"perbola, mesh and )D ob*ects lie +phere, rhombus, cube, c"linder and so on.

1.1 LAUNCHING AUTOCAD

. Choose +tart from the -indows program manager.

. Choose /rograms, Autodes, AutoCAD 00.

). Click the AutoCAD 00 for -indows icon.

or

1. Choose the AutoCAD 2004 icon from the destop.

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1.2 TET AND GRA!HIC" "CREEN"

!he graphics screen and the te%t screen are two different screens available in the drawing editor.

. !ress $unction e" #2 on the e"board.

TIPS:

2e sure the (odel !ab is highlighted at the bottom of the drawing window.

3a"outs will be covered in a later session.

!he Cursor must be in the drawing window in order to select ob*ects.

(a%imi4e the AutoCAD windows to be full screen. !his will mae the drawings bigger and easier to

read.

5se A3! 6 !A2 to move between -indows applications

1.$ CUR"OR

Controls the si4e of the crosshair. !he allowable range is from to 00 percent of the total screen. At

007 the ends of the crosshair are never visible. -hen the si4e is decreased to 887 or below, the

crosshairs have a finite si4e, and the crosshairs ends are visible when moved to the edge of the graphics

area. !he default si4e is 97.

. Choose !ools, :ptions.

. Dr%& the slider bar in the lower left corner of the dialog to set the cursor si4e.

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1.4 CANCELING A CO''AND

. /ress the E"CA!E (E"C) e" on the e"board.

TI!* !ressin& E"C t+ice cle%rs neste, co--%n,s.

1. 'ENU" AND COLOR"

!ull,o+n 'enus. Click :n the desired /ulldown menu.

. Click :n the command to be e%ecuted from the pulldown.

C%sc%,in& !ull,o+n 'enus

. Click :n a command that has a cascading menu ;menus with an arrow to the right of

the menu, the +/AC#2A> and >I&=! (:5+# will act as enter most of the time ;e%ceptions include

placing !#E! e" on the e"board

or

. !ress the +pace bar on the e"board.

or

). Click the right mouse button.

2.0 !OINTING DE9ICE ('OU"E)

AutoCAD uses either a mouse or digiti4ing tablet to select ob*ects in a drawing.

Le:t 'ouse utton

5sed to pic or select ob*ects

. Click the left mouse button to select an ob*ect area in the drawing.

. !ress #+C twice to deselect an ob*ect ;or to cancel a command


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Re,o

>everses the effects of a single 5D: or 5 command.

. Choose #dit, >edo.

or

. Click the >edo icon.

or

). T3e >#D: at the command prompt to redo the last undo command.

Command@ REDO

TI!"*

85D: has no effect on some commands and s"stem variables, including those that open, close, or save

a window or a drawing, displa" information, change the graphics displa", regenerate the drawing, ore%port the drawing in a different format.

'>#D: must immediatel" follow the 5 or 5D: command.

2.2 #UNCTION AND ACCELERATOR


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2.4 O!EN EI"TING DRA=ING"

. Choose $ile, :/#.

or

. !ress C!>3 6 :. or

). Click the :/# icon. or

1. T3e :/# at the command prompt. Command@ O!EN

9. !ress #!#>

. Doule Click the desired director" to find the drawing to open.

G. Click the drawing name to open.J. Click !he : button.

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Ti8 /review shows a bitmap image of the drawing selected. !his image is the view that was last saved in

the drawing. It will not show a preview of drawings saved before >) AutoCAD.

2. CREATING A NE= DRA=ING

NE= Co--%n,

Creates a new drawing file.

. Choose $ile, ew.

or

. !ress C!>3 6 or

). Click the ew icon.

or

1. T3e#- at the Command prompt.

Command@ NE=

9. Choose :ne of the options for creating a new drawing.

. Click !he : button.

G. "%>e the drawing as another name.

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!I/@

ew drawings can also be created from !emplate $iles.

2./ "A9ING DRA=ING"

+aves the most recent changes to a drawing. !he first time an unnamed drawing is saved the +ave As

dialog bo% appears. AutoCAD saves its drawings as files with e%tensions ending in .D-&.

. Choose #ile? "%>e or "%>e As.

or

. T3e +A?# or +A?#A+ at the command prompt.

Command@ "A9E or "A9E A"

). !ress ENTER

1. T3e A new drawing name or eep the e%isting drawing name.

9. Click !he : button.

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TI!*

Clicing the dropdown list for $ile t"pe changes the format that the

drawing can be saved in.

2. @uick "%>e

!he K+A?# command is equivalent to clicing +ave on the $ile menu. If the drawing is named,

AutoCAD saves the drawing using the file format specified on the :pen and +ave tab of the :ptions

dialog bo% and does not request a file name. If the drawing is unnamed, AutoCAD displa"s the +ave

Drawing As dialog bo% ;see +A?#A+< and saves the drawing with the file name and format "ou specif".

. !ress C!>3 6 +.

or

. Click the +ave icon.

or

). T3e K+A?# at the command prompt,

Command@@"A9E

!I/+@

Drawings can be saved as different versions of AutoCAD ;e.g. >), >1, > 000, etc.

Lab 1 Autocad

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Transcript of Lab 1 Autocad