Download - Intro Autocad 2
-
7/29/2019 Intro Autocad 2
1/20
Introduction to AutoCAD
Ipek Gursel
-
7/29/2019 Intro Autocad 2
2/20
OUTLINE
Giving commands
Object snap
Zooming and panning
Drawing 2D shapes Drawing 3D shapes
Editing
UCS
Assignment
-
7/29/2019 Intro Autocad 2
3/20
How do we give a command?
Command line
Toolbars(view/Toolbars)
Drop-down menus
You can pick any one(s) that you are comfortable with.
-
7/29/2019 Intro Autocad 2
4/20
What is OSNAP?
Osnap (Object Snap) settings make it easierto select a 2d objects points Endpoint
Midpoint
Perpendicular
Center ntersection
Osnap will be active when
AutoCAD is expecting you to
pick a point on the working area Type osnap on your
command window:
-
7/29/2019 Intro Autocad 2
5/20
Zooming...
You will need to zoom in and out while drawingwith AutoCAD. This doesnt change your objectsor UCS, only the way you see your workingspace. This can be done in many ways:
1. Scroll bars2. Typing z or zoom in your command window.
All
Center
Dynamic Extents
Previous
Scale
Window
-
7/29/2019 Intro Autocad 2
6/20
Lets draw a LINE:
remember that AutoCAD recognizes anobject by its coordinates. You will need twogiven points to draw a line.
You can start at a random point on yourWCS for your FIRST POINT, but you shouldspecify the coordinates of your SECONDPOINT.
(x1,y1,z1)
(x2,y2,z2)
-
7/29/2019 Intro Autocad 2
7/20
Lets draw a LINE (1):
1. Give the command Type line on the command window, OR Click on the line icon on the Draw toolbar, OR Select Line on the Draw menu
2. Specify the first point (a) Click on a random point on your working area
(black space)3. Specify the second point in relation to the
first point @distance
-
7/29/2019 Intro Autocad 2
8/20
Lets draw a LINE (2):
1. Hit F8 (ortho on)2. Give the command3. Specify the first point4. Specify the second point in relation to the
first point Point the cursor to the left hand side. You will
see that the cursor snaps only to 0o-90o-180o-270o
Type 7 and hit enter
a b7 units
-
7/29/2019 Intro Autocad 2
9/20
Lets draw a LINE (3):
If we know the coordinates of the line we wantto draw, we can simply type them into thecommand line. (However, this mostly isnot the case.)
1. Give the command2. Specify the first point (4,8,11)
3. Specify the second point (5,11,23)
a
b
(4,8,11)
(5,22,13)
-
7/29/2019 Intro Autocad 2
10/20
What else?
Rectangle: two diagonal lines(pick first point, select the second one
with relation to the first. @5
-
7/29/2019 Intro Autocad 2
11/20
Editing
COPY
MOVE
MIRROR
ARRAY
SCALE
STRETCH
-
7/29/2019 Intro Autocad 2
12/20
More editing
STRETCH
EXPLODE
OFFSET
ROTATE
ERASE
-
7/29/2019 Intro Autocad 2
13/20
Polyline (pline)
The PLINE command creates a chain linewith multiple vertexes and straight orcircular segments between the vertexes
Draw a closed shape with the plinecommand:
Then type PEDIT (polyline edit) on thecommand line and see what you can dowith it:Enter an option [Close/Join/Width/Editvertex/Fit/Spline/Decurve/Ltype gen/Undo]:
Try Width and Spline
-
7/29/2019 Intro Autocad 2
14/20
Hatching
Hatching is used to add shaded patterns to objects andshapes within an Autocad drawing. Hatch patterns canbe used to indicate a material to be used, such as aconcrete hatch. Alternatively it could be used to make anarea of a drawing stand out.
You will pick:
Pattern
Scale
Angle
points
-
7/29/2019 Intro Autocad 2
15/20
Solids contain the mass properties of 3Dobjects.
You can use the Solids toolbar for readilyaccessible objects
Box Cylinder
Wedge
You can use the Boolean operations of
more complicated shapes. Union (join two solids)
Subtract (carve out the second solid from thefirst)
Intersection (only the common area)
Drawing SOLIDS
Torus Cone
Sphere
-
7/29/2019 Intro Autocad 2
16/20
To increase the number of faces
Tools > Options > Display tab >
-
7/29/2019 Intro Autocad 2
17/20
We can create solids by extruding as well
If youextrude
a surface into the thirddimension, you simply add a thickness insection. This basically is same as creating asolid object
Extrude 5units 5 units
Extrude -4units
4 units
-
7/29/2019 Intro Autocad 2
18/20
UCS and WCS
The AutoCAD world is 3 dimensional. However, if wewant to draw a 2d object, such as a plan or a section,we will use only 2 dimensions (x and y).
WCS (world coordinate system) is the imaginary planethat is parallel to the ground. It is the default coordinatesystem.
Modifications made to the World Coordinate System(WCS) result in a User Coordinate System (UCS). It isthe plane that you work on. It enables the user to draw3 dimensional objects.
To create a new UCS, type ucs on the command window,
then say New and specify 3 points on your new UCSplane.
-
7/29/2019 Intro Autocad 2
19/20
Lets change the UCS
Prompt: Command: Type ucs and press Enter. Prompt: Enter and option [New/Move/ orthoGraphic
/Prev/ Restore/Save/Del/ Apply/?/World] : Typein n for the New option and press Enter. Prompt: Specifyorigin of new UCS or [Zaxis/ 3point/ OBject/ Face/View/X/Y/Z : Type 3 to select the 3point option andpress Enter.
Prompt: Specify a new origin point :Use an Osnapor coordinate to select the position for a new 0,0,0 point (thisselects the junction of the X, Y, and Z axes). NOTE: TheintersectionOsnap will NOT work with solid models.
Prompt: Specify point on positive portion of X-axis:Use an Osnap or coordinate to selectthe direction of the desired X-axis. NOTE: The numbers inside the
brackets< > will not necessarily be the same as those shown inthis example.
Prompt: Specify point on positive-y portion of the UCS XYplane : Use an Osnap or coordinate toselect the direction of the Y-axis. The UCS icon should changeposition to indicate the new UCS orientation.
-
7/29/2019 Intro Autocad 2
20/20
Homework Assignment
Your perspective assignments are due nextweek (March 16, 2006, 5pm)
You will submit your *.dwg files by email.([email protected])
Late submission will be accepted subject toa mark penalty of 20% per day, up to twodays. No late submission will be acceptedafter March 18, 2006.
You can email me with your questions, orstop by my office anytime (A301)