The document is a study on AutoCAD, a 2D and 3D CAD software application developed by Autodesk. It discusses AutoCAD's applications in mechanical and civil engineering for digital drafting and design. The study also covers basic AutoCAD interface tools, commands, and functions for drawing objects like circles and applying modifications such as mirror, fillet, and array. It provides an overview of how 2D drawings can be converted to 3D models in AutoCAD.

1. An Study About
“Auto CAD”
(Computer Aided Drawing)
By
Ninad Babarao Ghormade
Guided by
M.S.Ingalkar Sir
(Lecturer, Mechanical Engineering. Department)

2. Summary
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3. Introduction
 AutoCAD is a CAD software application for 2D and 3D design and
drafting.
 It was developed and sold by Autodesk, Inc. First released in
December 1982.
 Autodesk was founded in 1982 in USA by John walker.
 Some of its finest products are AutoCAD,3ds Max,
Alias studio,Autodesk ECS Luster, MAYA and many more.
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4.  AutoCAD Is one of the basic software
 Now a days more advanced softwares like proE,catia,solid
works etc are used in industry.
 AutoCAD basically used for 2-d modeling .
 The latest version of AutoCAD is AutoCAD-2013 and
company is ready for its advanced version called AutoCAD-
2014 with some new added features.
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5. Applications of AutoCAD
 AutoCAD is generally used for digital
drafting in an industry.
 We can make designs and layouts of
our product with an ease.
 Produce professional drawings in the
minimum time.
 AutoCAD is used mostly for 2-d
designs.
 There are lot of other versions of
AutoCAD which are used by not only
by mechanical or civil engg but also by
electrical engg. for there circuit
diagrams.
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6. Introduction to AutoCAD
interface
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7. Some basic facts and terms in
Autocad ….
 Autocad is always written as
AutoCAD
 There are many ways of doing the
same thing in AutoCAD.
 The ISO standard size of the sheet is (420,
420 X 297mm. 290)
 The background on which we draw
is known as GUI(Graphical User
Interface).
 The pointer is known as crosshair.
(0
 The UCS stands for user co-ordinate
,0)
system which shows the different x,y
and z planes.
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8. SELECTION PANEL OF Auto CAD
 When we move our cross here from left to right
then BLUE area is formed and when we move it
from right to the left then GREEN area is formed.
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9. X, Y Coordinate System
 Every object is located
in relation to the
origin.
 Positive and negative
X axis
 Positive and negative
Y axis
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Auto CAD

10. How to enter commands
 By clicking Menu item
 By clicking Toolbar icon
 By typing in Command line
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11. Commands used in autocad
 Circle :- draw circle options
use Circle button on Draw Toolbar.
 Or by typing C in command prompt and then
enter.
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12. Ellipse:
 Draw > ellipse > center
Home tab > draw panel > center
 Type ELLIPSE and then enter
in command prompt.
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13. Trim:- {TR enter}
Trim command is used to delete the extended parts of
An object.
Extend:- {Ex enter}
Extend command elongates an object to a boundary.
Grid:- {By pressing f7 key}
This is pattern of dots displayed on the screen
to guide.
Offset:- {offset/o enter}
Offset an object(parallel) by a set distance.
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14. Mirror:-{Mi enter}
It creates a mirror image of an object
or selection set.
Stretch:- {s enter}
It stretches an object after you have selected a
Portion of it.
Fillet:- {f enter}
Creates a round corner between the two lines
Chamfer:- {cha enter}
Creates an angled corner between two lines.
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15. Array:- {AR enter}
Creates a repeating pattern of the selected
Object.
Zoom:- {Z enter or with scrolling}
Zoom command gives you zoomed version of an object.
Revcloud:- {REV enter}
A revision cloud is used to highlight something.
Hatch:- {H enter}
Hatch is used to make shaded portion, it represents
The cross-sectional area of an object.
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16. Object snap:- {OS enter/f3}
This is a method of snapping to certain, precise points
On an object.
Ortho mode:- {f8 key}
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17. Let’s took a quick view of 2D Drawing:-
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18. At last let’s take a quick view about , How convert 2D Object to 3D:-
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19. References
 http://www.usa.autodesk.com
 http://en.wikipedia.org/wiki/AutoCAD
 http://www.sciencedaily.com
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20. September 17, 2012 Auto CAD