This document provides an outline and overview of AutoCAD, a commercial 2D and 3D computer-aided design software. It discusses AutoCAD's history and development since 1982, how to use basic drawing tools and commands, editing functions, working with user and world coordinate systems, and creating solid 3D objects. The advantages of AutoCAD include compatibility with other CAD programs and reduced training costs, while disadvantages include limited file formats and non-parametric design capabilities.
Autocad designing demo for freshers.
ANY ENGINEERING GRADUATE IN MECHANICAL DISCIPLINE NEED TO KNOW ABOUT AUTOCAD AND ITS USE THEN IT WILL BE HELPFUL FOR HIM/HER
ZENUS INFOTECH INDIA PVT. LTD. is an ISO 9001:2008 certified Engineer’s Training Company in Roorkee& provides training to the B.E./B.TECH/DIPLOMA/MCA/BCA and related field students in 25+ cutting-edge technologies like AutoCAD, Solid-Works, CATIA, REVIT, Pro-E, UG-NX .NET, JAVA, PHP, Android, Linux, oracle Wireless & Telecommunication and many more. Zenus Infotech always works for the benefit of its students and provide high profile job opportunities for its students
Autocad designing demo for freshers.
ANY ENGINEERING GRADUATE IN MECHANICAL DISCIPLINE NEED TO KNOW ABOUT AUTOCAD AND ITS USE THEN IT WILL BE HELPFUL FOR HIM/HER
ZENUS INFOTECH INDIA PVT. LTD. is an ISO 9001:2008 certified Engineer’s Training Company in Roorkee& provides training to the B.E./B.TECH/DIPLOMA/MCA/BCA and related field students in 25+ cutting-edge technologies like AutoCAD, Solid-Works, CATIA, REVIT, Pro-E, UG-NX .NET, JAVA, PHP, Android, Linux, oracle Wireless & Telecommunication and many more. Zenus Infotech always works for the benefit of its students and provide high profile job opportunities for its students
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2. OUTLINE
Introduction
History
Giving commands
Object snap
Zooming and panning
Drawing 2D shapes
Drawing 3D shapes
Editing
UCS
Assignment
The AutoCAD Advantage
The Disadvantages of AutoCAD
References
3. Introduction
AutoCAD is a commercial software application for 2D and
3D computer-aided design (CAD) and drafting — available
since 1982 as a desktop application and since 2010 as a
mobile web- and cloud-based app marketed as AutoCAD
360.
4. History
AutoCAD was derived from a program begun in 1977 and
released in 1979 called Interact CAD, also referred to in
early Autodesk documents as MicroCAD, which was
written prior to Autodesk's (then Marinchip Software
Partners) formation by Autodesk cofounder Mike Riddle.
The first version by the AutoDesk Company was
demonstrated at the 1982 Comdex and released that
December.
The 2016 release marked the 30th major release for the
AutoCAD for Windows. The 2014 release marked the
fourth consecutive year for AutoCAD for Mac.
5. 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.
6. What is OSNAP?
Osnap (Object Snap) settings make it easier to
select a 2d object’s points
Endpoint
Midpoint
Perpendicular
Center
İntersection
Osnap will be active when
AutoCAD is expecting you to
pick a point on the working area
Type osnap on your
command window:
7. Zooming...
You will need to zoom in and out while drawing with
AutoCAD. This doesnt change your objects or UCS,
only the way you see your working space. This can be
done in many ways:
1. Scroll bars
2. Typing z or zoom in your command window.
All
Center
Dynamic
Extents
Previous
Scale
Window
8. Lets draw a LINE:
remember that AutoCAD recognizes an object by
its coordinates. You will need two given points to
draw a line.
You can start at a random point on your WCS for
your FIRST POINT, but you should specify the
coordinates of your SECOND POINT.
(x1,y1,z1)
(x2,y2,z2)
9. 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<degrees
@5<30
30
a
b
10. Lets draw a LINE (2):
1. Hit F8 (ortho on)
2. Give the command
3. Specify the first point
4. 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 b
7 units
11. Lets draw a LINE (3):
If we know the coordinates of the line we want to
draw, we can simply type them into the command
line. (However, this mostly is not the case.)
1. Give the command
2. Specify the first point (4,8,11)
3. Specify the second point (5,11,23)
a
b
(4,8,11)
(5,22,13)
12. What else?
Rectangle: two diagonal lines
(pick first point, select the second one with
relation to the first. @5<-33)
Circle/Arc: center and radius
Polygon: specify the number of edges
and length of a side
A small tip: you can use the EXPLODE command for the tool to
split the object into its components or lines
a
b
a
d
d
15. Polyline (pline)
The PLINE command creates a chain line with
multiple vertexes and straight or circular
segments between the vertexes
Draw a closed shape with the pline command:
Then type PEDIT (polyline edit) on the
command line and see what you can do with it:
Enter an option [Close/Join/Width/Edit
vertex/Fit/Spline/Decurve/Ltype gen/Undo]:
Try Width and Spline
16. Hatching
Hatching is used to add shaded patterns to objects and shapes
within an Autocad drawing. Hatch patterns can be used to
indicate a material to be used, such as a concrete hatch.
Alternatively it could be used to make an area of a drawing stand
out.
You will pick:
Pattern
Scale
Angle
points
17. Drawing SOLIDS
Solids contain the “mass properties” of 3D objects.
You can use the Solids toolbar for readily
accessible 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 the first)
Intersection (only the common area)
Torus
Cone
Sphere
18. To increase the number of faces
Tools > Options > Display tab >
19. We can create solids by extruding as well
If you “extrude” a surface into the third
dimension, you simply add a thickness in section.
This basically is same as creating a “solid” object
Extrude 5
units 5 units
Extrude -4
units
4 units
20. UCS and WCS
The AutoCAD world is 3 dimensional. However, if we want 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 plane that is
parallel to the ground. It is the default coordinate system.
Modifications made to the World Coordinate System (WCS) result
in a User Coordinate System (UCS). It is the plane that you work
on. It enables the user to draw 3 dimensional objects.
To create a new UCS, type ucs on the command window, then say
New and specify 3 points on your new UCS plane.
21. Lets change the UCS
—Prompt: Command: Type ucs and press Enter.
—Prompt: Enter and option [New/Move/ orthoGraphic /Prev/
Restore/Save/Del/ Apply/?/World] <World>: Type in n for the
New option and press Enter. —Prompt: Specify origin of new
UCS or [Zaxis/ 3point/ OBject/ Face/ View/X/Y/Z <0,0,0>: Type 3
to select the 3point option and press Enter.
—Prompt: Specify a new origin point <0,0,0>:Use an Osnap or
coordinate to select the position for a new 0,0,0 point (this selects
the junction of the X, Y, and Z axes). NOTE: The intersection
Osnap will NOT work with solid models.
—Prompt: Specify point on positive portion of X-axis
<1.000,0.000,0.000>:Use an Osnap or coordinate to select the
direction of the desired X-axis. NOTE: The numbers inside the
brackets< > will not necessarily be the same as those shown in
this example.
—Prompt: Specify point on positive-y portion of the UCS XY
plane <1.000,0.000,0.000>: Use an Osnap or coordinate to
select the direction of the Y-axis. The UCS icon should change
position to indicate the new UCS orientation.
22. Homework Assignment
Your perspective assignments are due next week
(March 16, 2006, 5pm)
You will submit your *.dwg files by email.
Late submission will be accepted subject to a
mark penalty of 20% per day, up to two days. No
late submission will be accepted after March 18,
2006.
You can email me with your questions, or stop by
my office anytime (A301)
23. AutoCAD Advantage
Removal of Data Translations
SolidWorks / Solid Edge / Inventor Compatibility
Industry Standard Translators
Reduced Training Time/Cost
Rapid Product Advancements