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AUTOCADComputer Aided Design

CT 121

Engr. Marjee Rose B. Parreo, REE, CoE, MBA

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What is CAD?

Computer Aided Design.

Allows you to accomplish design anddrafting activities using a computer.

Design is a broad field involving theprocess of making an idea into a realproduct or system.

Drafting is generally known as theproduction of drawings that are used todocument a design from manufacturing orconstruction.

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Why Use CAD?

Accuracy

It stores numeric data with greatprecision.

Productivity for Repetetive Operations. Shaped, drawings and elements can

easily be duplicated (copy/paste)

Sharing the CAD file with othersoftware programs

Drawings can be imported to otherprograms.

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In this course you will learn

Basic drawing and modify commands.

Set up layers

Put color in your drawing

Define and insert blocks

Use text in your drawings

Putting dimensions in the floor plan.

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References:

AutoCAD 2004 and AutoCAD LT 2004by David Frey

AutoCAD 2006 Instructor: A student

Guide to Complete Coverage ofAutoCADs Commands and Featuredby Leach

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Getting to know AutoCADTitle bar Menu bar

Properties toolbarLayers

Toolbar

Crosshair Cursor

Model and Layout tabs

User Coordinate System

Draw Toolbar

Modify Toolbar

Command WindowStatusbar

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Parts of the AutoCAD Window

Title bar Contains the program name and the title of

the current drawing and its path.

Standard toolbar Contains standard commands use in the

program.

Menu bar

Bar that contains all the commands inautoCAD

Layers and Properties toolbar Contains buttons and commands use to

manipulate the properties and layers of thedrawin .

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Parts of the AutoCAD Window

Drawing area Blank middle section of the screen.

Where you draw your shapes

Crosshair cursor Pointer

User coordinate system icon Indicates the positive direction for the X and

Y coordinates Model and Layout tabs

Use to shift between different views.

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Parts of the AutoCAD Window

Command window Is where you tell the program what to do and

where the program tells you whats going on.

Status bar Displays the status of the programs

commands: Snap

Grid

Ortho

Otrack

LWT

Model

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Drop-Down Menus

View Contains tools for controlling the display of

your drawing file.

Insert Contains commands for placing drawings

and images or parts of them inside otherdrawings.

Format

Contains commands for setting up generalparameters for a new drawing.

Tools Contains special tools for use while you are

working on the current drawing.

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Drop-Down Menus

Draw Contains commands for displaying new

objects (lines, circles) on the screen.

Dimension Contains commands for dimensioning a

drawing.

Modify

Contains commands for changing existingobjects in the drawing

Window Contains commands for displaying currently

open windows and lists currently opendrawin files.

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Command Entry

Methods of Entering Commands: Toolbars Select the command by picking an icon from a

toolbar

Pull-down Menu Select the command from a pull-down menu

Screen (side) Menu

Select the command from the screen (side)menu.

Keyboard Type the command name, command alias or

CTRL (accelerator) keys at the keyboard.

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Command Entry

Using the Mouse Left button PICK Used to select commands or pick locations on

the screen.

Right button Enter or shortcut Menu This button either performs the same function

as the enter key or produces a shortcut menu.

Middle button or wheel Pan / Zoom Press and Drag Pan the drawing about on

the screen.

Wheel zoom in or zoom out

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Function Keys

F1 Help Opens help window providing written

explanation on commands and variables.

F2 Flipscreen Activates a text window showing the

previous command line activity (commandhistory)

F3 Osnap Toggle Turns the Osnap on or off.

F4 Tablet

Turns Tabmode variable on or off.

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Function Keys

F5 Isoplane Isometric Style Snap and Grid Setting,

Toggles the cursor to dram on one of theisometric planes.

F6 Coords Toggles the coordinate display between

cursor tracking mode and off.

F7 Grid Turns the grid on or off.

F8 Ortho Turns the ortho on or off.

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Function Keys

F9 Snap Turns the snap on or off.

F10 Polar

Turns the polar on or off.

F11 Osnap Tracking

Turns the osnap tracking on or off.

F12 Dyn Turns the dynamic input on or off.

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Drawing Aids

SNAP (F9) Grid Snap forces the cursor to snap to

regular intervals (grid)

Polar Snap forces the cursor to snapregular intervals along angular lines.

GRID (F7) Used as visual reference of units and

lengths. ORTHO (F8)

Lines are forced to an orthogonalalignment (only horizontal or vertical)

when drawing.

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Drawing Aids

Polar (F10) Makes it easy to draw lines at regular

angular increments, such as 30, 45 and

90 degrees. OSNAP (F3, Object Snap)

OTRACK (F11)

DYN (F12) A feature that helps you visualize and

specify coordinates when drawing lines,arcs, circles and the like.

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Basic Commands in

AutoCAD

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Standard Toolbar

New Drawing

Save

Open File

Print/Plot

Plot Preview

Publish

3DDWF

Copy

Cut

Paste

Match Properties

Block Editor

Undo

Redo

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Standard Toolbar

Zoom realtime

Pan realtime

Zoom window

Zoom previous

Properties

Design Center

Tool PalettesWindow

Sheet SetManager

Markup setmanager

Calculator

Help

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Drawing Toolbar

Line

Construction Line

Polyline

Polygon

Rectangle

Arc

Circle

Revision Cloud

Spline

Ellipse

Ellipse Arc

Insert Block

Make Block

Point

Hatch

Gradient

Region

Table

Text

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Modify Toolbar

Erase

Copy

Mirror

OffsetArray

Move

Rotate

Scale

Stretch

Trim

Extend

Break at Point

Break

Join

Chamfer

Fillet

Explode

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Modify Toolbar

Bring to front

Send to back

Bring AboveObjects

Send UnderObjects