ME2155 - Computer Aided Drafting & Modeling Laboratory

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Ex.No: 01

Date :

ABSOLUTE AND RELATIVE COORDINATE SYSTEM

Aim :

To study the capabilities of softwares for drafting and modeling coordinate

systems. (Absolute & Relative).

Software Used :

AutoCAD 2006

Procedure :

ABSOLUTE-SQUARE RELATIVE-SQUARE

Command: limits

Reset Model space limits:

Specify lower left corner or [ON/OFF]

: 0,0

Specify upper right corner

: 150,150

Command: z

ZOOM

Specify corner of window, enter a scale

factor (nX or nXP), or

[All/Center/Dynamic/Extents/Previous/Sca

le/Window/Object] : a

Regenerating model.

Command: line Specify first point: 10,10

Specify next point or [Undo]: 60,10


Specify next point or [Close/Undo]: 10,60


Specify next point or [Close/Undo]: enter.

Command: dimlinear Specify first extension line origin or

:

Specify second extension line origin:

Specify dimension line location or

[Mtext/Text/Angle/Horizontal/Vertical/Ro

tated]:



Command: limits



: 0,0


: 150,150

Command: zoom




le/Window/Object] : all

Regenerating model.


Specify next point or [Undo]: @50



Command: mtext

Current text style: "Standard" Text

height: 6.0000

Specify first corner: 10,90

Specify opposite corner or

[Height/Justify/Line

spacing/Rotation/Style/Width]: h

Specify height :6



spacing/Rotation/Style/Width]: 80,70

Type the word of ABSOLUTE SQUARE) ENTER

Command: mtext


height: 6.0000




spacing/Rotation/Style/Width]: h

Specify height : 6




Type the word of ALL DIMENSIONS ARE IN mm Enter.

2



Command: MTEXT Current text style: "Standard" Text

height: 4.0000



[Height/Justify/Line spacing/Rotation/Style/Width]:

80,70

Type the word of Relative square PRESS OK

Command: mtext


height: 4.0000



[Height/Justify/Line spacing/Rotation/Style/Width]:

80,2

Type the word of ALL DIMENSIONS ARE IN mm Press OK



PENTAGON

ABSOLUTE RELATIVE

Command: limits



:


: 150,150

Enter

Command: zoom





Regenerating model.

Command: line

Specify first point: 20,20


Specify next point or [Undo]: 85.45,67.55

Specify next point or [Close/Undo]:

44.99,96.93


4.53,67.55


Specify next point or [Close/Undo]: enter

Command: dimaligned

Specify first extension line origin or

:



[Mtext/Text/Angle]:

Dimension text = 50

Command: mtext


height: 6.0000





Type the word of Absolute Pentagon Press OK

Command: mtext

Current text style: "Standard" Text height: 6.0000



Command: limits



: 0,0


: 150,150

Command: zoom

Specify corner of window, enter a scale factor

(nX or nXP), or


le/Window/Object] : all Regenerating

model.

Command: line










ABSOLUTE HEXAGON Command: limits



:


: 150,150

Command: zoom





Regenerating model.

Command: line



Specify next point or [Undo]: 105,63.3

Command: MTEXT


height: 6.0000





Type the word of ALL DIMENSIONS ARE IN mm Press OK.

RELATIVE HEXAGON Command: limits



:


: 150,150

Command: zoom





Regenerating model.

Command: LINE






80,106.6


30,106.6

Specify next point or [Close/Undo]: 5,63.3



Command: dimaligned

Specify first extension line origin or

:



[Mtext/Text/Angle]:

Dimension text = 50

Command: mtext Current text style: "Standard" Text

height: 6.0000





Type the word of ABSOLUTE HEXAGON Press

OK Command:

mtext Current text style: "Standard" Text

height: 6.0000







@50



Result:

The capabilities of softwares for drafting and modeling were studied and the shapes

like square, pentagon and hexagon was drawn using Absolute and Relative coordinate

system.

Ex.No: 02

Date :

TITLE BLOCK WITH NECESSARY TEXT AND PROJECTION SYMBOL

Aim :

To draw a title block with necessary text and projection symbol on A3 size sheet of

420 X 297 mm using AutoCAD.

Software Used :

AutoCAD 2006

Procedure :

Command: limits


Specify lower left corner or [ON/OFF] :

Specify upper right corner : 440,317

Command: zoom

Specify corner of window, enter a scale factor (nX or nXP), or

[All/Center/Dynamic/Extents/Previous/Scale/Window/Object] : all

Regenerating model.

Command: line







Command: line









Command: zoom


[All/Center/Dynamic/Extents/Previous/Scale/Window/Object] : window


Specify opposite corner: 420,90

7



Command: line





Command: line



Specify next point or [Undo]: enter

Command: line




Command: line




Command: circle

Specify center point for circle or [3P/2P/Ttr (tan tan radius)]: 270,35

Specify radius of circle or [Diameter]: 8

Command: circle


Specify radius of circle or [Diameter] : 6

Command: line




Command: mtext



Specify opposite corner or [Height/Justify/Line spacing/Rotation/Style/Width]: 275,85

Enter the text of DATE and then press OK.



Command: MTEXT




Enter the text of REG.NO and then press OK

Command: MTEXT




Enter the text of NAME OF THE DRAFTMANS and then press OK

Command: MTEXT




Enter the text of NAME OF THE COLLEGE and then press OK

Command: MTEXT




Enter the text of TITLE OF THE DRAWINGS and then press OK

Command: mtext



Enter the text of ALL DIMENSIONS ARE IN mm and then press OK

Command: ZOOM


[All/Center/Dynamic/Extents/Previous/Scale/Window/Object] : ALL



Result:

Thus the title block with necessary text and projection symbol of a title block on A3

sheet was drawn using AutoCAD.



Aim :

To draw a parabola curve of given distance from the directrix to focus as 60mm using

B-spline.

Software Used :

AutoCAD 2006

Procedure: Command:

limits


Specify lower left corner or [ON/OFF] :0,0

Specify upper right corner : 300,300 enter

Command: zoom



Regenerating model.

Command: line




Command: line



Specify next point or [Undo]:enter

Command: line





Command: line


Specify next point or [Undo]: 225


EX.NO. PARABOLA

DATE:



Command: dimstyle

Enter

It can show the Dimstyle dialogue box, in this we press the button of modify it show

the another dialogue box of modify dimension style:standard. On this, we change the

following.

1. Symbols and arrows on arrow size box enter the value of 3

2. Text

Text style Times new roman, Font Height - 8

Text height - 8

3. Primary Units Precision single digit of 0

Command: '_dist Specify first point: Specify second point:

Distance = 30, Angle in XY Plane = 180, Angle from XY Plane = 0

Delta X = -29.8743, Delta Y = 0.0000, Delta Z = 0.0000

(For measuring the distance between two points, use a tool of Tool on menu bar, on

its drop down menu it shows a inquiry option, in its we have select the distance

option.)

Command: line




Command: line


Specify next point or [Undo]: 290,-200


Command: array

Select Rectangular array, enter 1 on row and 10 on column box, then enter 15 on

column offset box and then click the select object button. Now press the cursor on

which the required object to array.

Select objects: 1 found

Select objects: enter

Now press the preview button we can see the preview of arrayed object, if it is correct

then press accept otherwise press modify button.

Command: EXTEND

Current settings: Projection=UCS, Edge=None



Select boundary edges ...

Select objects or : press the space bar

Select object to extend or shift-select to trim or

[Fence/Crossing/Project/Edge/Undo]: select the required line to extend, then press enter.

Current settings: Projection=UCS, Edge=None

Select boundary edges ...

Select objects or : press space bar

Select object to extend or shift-select to trim or

[Fence/Crossing/Project/Edge/Undo]: select everyone arrayed line individually, then press

enter.

Now measure the distance of every arrayed line from axis line to the inclined line.


Distance = 45.0000, Angle in XY Plane = 270, Angle from XY Plane = 0

Delta X = 0.0000, Delta Y = -45.0000, Delta Z = 0.0000



























Command: circle


Specify radius of circle or [Diameter]: 45 press enter

press enter

Command: CIRCLE

Specify center point for circle or [3P/2P/Ttr (tan tan radius)]: 70.0000,150.0000


press enter

Command: CIRCLE



press enter

Command: CIRCLE



press enter

Command: CIRCLE



press enter

Command: CIRCLE



press enter

Command: CIRCLE



press enter



Command: CIRCLE



press enter

Command: CIRCLE



press enter

Command: CIRCLE



press enter

Command: zoom


[All/Center/Dynamic/Extents/Previous/Scale/Window/Object] : 0,0


Press enter button.

Command: SPLINE

Specify first point or [Object]:40,150

Specify next point: intersecting point 1

Specify next point or [Close/Fit tolerance] : intersecting point 2









Press enter button.

Specify start tangent:40,150

Specify end tangent: intersecting point 10



Command: erase

Select all the drawn circles.

Select objects: 1 found

Select objects: 1 found, 2 total









Select objects: enter

Command: zoom



Press enter

Command: mirror

Select objects: 0,160

Specify opposite corner: 300,-200

16 found

Select objects:

Specify first point of mirror line: 10,150

Specify second point of mirror line: 290,150

Erase source objects? [Yes/No] : No

Press enter.

Command: zoom



Press enter.

Command: dimlinear

Specify first extension line origin or : 10,150

Specify second extension line origin: 70,150

Non-associative dimension created. Specify



dimension line location or

[Mtext/Text/Angle/Horizontal/Vertical/Rotated]: h

Specify dimension line location or [Mtext/Text/Angle]: 10,-50

Press enter

Dimension text = 60

Result:

Thus the parabola curve of given distance was drawn using AutoCAD.



EX.NO.

SQUARE INVOLUTE

DATE

Aim :

To draw a Square involute of 30mm side using AutoCAD.

Software Used :

AutoCAD 2006

Procedure : Command:

limits


Specify lower left corner or [ON/OFF] : Specify

upper right corner : 200,200

Press enter

Command: zoom



Regenerating model.

Press enter

Command: rectangle

Specify first corner point or [Chamfer/Elevation/Fillet/Thickness/Width]: 40,40

Specify other corner point or [Area/Dimensions/Rotation]: 70,70

Press enter

Command: line




Command: line


Specify next point or [Undo]: -20,70


Command: line






Command: line




Command: arc

Specify start point of arc or [Center]: 40,10

Specify second point of arc or [Center/End]: e

Specify end point of arc: 70,40

Specify center point of arc or [Angle/Direction/Radius]: 40,40

Press enter

Command: arc

Specify start point of arc or [Center]: -20,70




Press enter

Command: arc



Specify end point of arc: -20,70


Press enter

Command: arc





Press enter

Command: region

Select objects: -30,0


9 found

Select objects:

2 loops extracted.



2 Regions created.

Command: dimlinear

Specify first extension line origin or : 40,40

Specify second extension line origin: 70,40



[Mtext/Text/Angle/Horizontal/Vertical/Rotated]: h

Specify dimension line location or [Mtext/Text/Angle]: 40,0

Dimension text = 30.0000

Command: zoom





Result:

Thus the square involute of 30mm side was drawn using AutoCAD.



Ex.No: 05

Date :

FRONT AND TOP VIEW OF HEXAGONAL PRISM

Aim :

To draw the front view and top view of simple hexagonal prism solid of base 20mm

and axis length 50mm rest on the HP using Auto CAD.

Software Used :

AutoCAD 2006

Procedure :

Command: limits

Reset Model space limits: Specify lower left corner or [ON/OFF] : 0,0


Command: zoom Specify corner of window, enter a scale factor (nX or nXP), or


Regenerating model.




Command: polygon

Enter number of sides : 6

Specify center of polygon or [Edge]: 100,50

Enter an option [Inscribed in circle/Circumscribed about circle] : I

Specify radius of circle: 20

Press enter

Command: dimlinear Specify first extension line origin or :

Specify second extension line origin: Specify


[Mtext/Text/Angle/Horizontal/Vertical/Rotated]:

Dimension text = 10

Command:DIMLINEAR Specify first extension line origin or :







Dimension text = 50







Dimension text = 33
























For draw the Centre line









Dimension text = 20





Dimension text = 50

Command: mtext Current text style: "Standard" Text height: 6.0000



Type the word of FRONT & TOP VIEW OF AN HEXAGONAL PRISM Press OK




Type the word of ALL DIMENSIONS ARE IN mm



Result:

Thus the front and top view of a Hexagonal prism was drawn using AutoCAD.



EX.NO.

FRONT AND TOP VIEW OF PENTAGONAL PYRAMID DATE

Aim :

To draw the front and top view of a pentagonal pyramid of base side 30mm and axis

length 80mm rest on the HP using Auto CAD.

Software Used :

AutoCAD 2006

Procedure : Command:

limits

Reset Model space limits: Specify lower left corner or [ON/OFF] : Specify

upper right corner : 250,250



Regenerating model.








line location or


Dimension text = 28

Command: _dimlinear

Specify first extension line origin or :




Dimension text = 46

Command: _dimlinear Specify first extension line origin or :





Dimension text = 24

For finding the Centre point of the polygon








Specify next point or [Close/Undo]:enter













For draw the centre line








Command: line





Command: DIMALIGNED Specify first extension line origin or :



[Mtext/Text/Angle]:



Dimension text = 30





Dimension text = 80




Type the word of FRONT & TOP VIEW OF AN PENTAGONAL PYRAMID Press OK

Command: mtext





Press OK



Result:

Thus the front and top view of a pentagonal pyramid was drawn using AutoCAD.



Ex.No: 07

Date :

FRONT AND TOP VIEW OF SIMPLE CYLINDER

Aim :

To draw the front and top view of a simple cylinder of 50mm diameter and axis length

of 100mm resting on the VP using auto CAD.

Software Used :

AutoCAD 2006

Procedure :

Command: limits





Regenerating model.

Command: circle Specify center point for circle or [3P/2P/Ttr (tan tan radius)]: 150,225

















Command: dimdiameter

Select arc or circle:

Dimension text = 50



Specify dimension line location or [Mtext/Text/Angle]: click the required position to place





Dimension text = 100

Command: MTEXT Current text style: "Standard" Text height: 10.0000



Type the word of FRONT & TOP VIEW OF AN CYLINDER Press OK

Command: MTEXT





Press OK

Result:



Thus the front and top view of a simple cylinder was drawn using AutoCAD.



Ex.No: 08

Date :

FRONT AND TOP VIEW OF SIMPLE CONE

Aim :

To draw the front and top view of a simple cone of 50mm diameter and axis length of

80mm resting on the VP using auto CAD.

Software Used :

AutoCAD 2006

Procedure :

Command: limits





Regenerating model.




Command: circle Specify center point for circle or [3P/2P/Ttr (tan tan radius)]: 150,225


















Command: point Current point modes: PDMODE=0 PDSIZE=0.0000

Specify a point: 150,225

Command: dimdiameter

Select arc or circle:

Dimension text = 50

Specify dimension line location or [Mtext/Text/Angle]: position the value at required place





Dimension text = 80




Type the word of FRONT & TOP VIEW OF AN SIMPLE CONE

Command: MTEXT Current text style: "Standard" Text height: 8.0000




Result:



Thus the front and top view of a simple cone was drawn using AutoCAD.



Ex.No: 09

Date :

FRONT, TOP VIEW & LEFT SIDE VIEW using First angle Projection

Aim :

To draw the front, top and lift side view of the given component using auto CAD.

Software Used :

AutoCAD 2006

Procedure :

Command: limits

Reset Model space limits: Specify lower left corner or [ON/OFF] :




Regenerating model.









Command: line






For draw an Dotted Line (Invisible)






Command: dimlinear

36







Dimension text = 20





Dimension text = 50

Command:DIMLINEAR





Dimension text = 15





Dimension text = 100







Command: line







Command: line






Command: line









Command: _dimlinear





Dimension text = 10





Dimension text = 20

Command: _dimlinear





Dimension text = 10





Dimension text = 80





Dimension text = 60








Command: line














Dimension text = 20

Command: _dimlinear





Dimension text = 20





Dimension text = 70

Command: _mtext Current text style: "Standard" Text height: 7.0000

Specify first corner: specify the required place

Specify opposite corner or [Height/Justify/Line spacing/Rotation/Style/Width]:












Result:

Thus the front, top and left side view of a given component was drawn using

AutoCAD.



Ex.No: 10

Date :

SECTION OF SOLID HEXAGONAL PRISM

Aim :

To draw the sectional top view and true shape of the given hexagonal prism solid of



50mm side and 100 Height and of 40

0 cutting plane angle and it is passing through at a point

of 30mm from the top of the solid.

Software Used :

AutoCAD 2006

Procedure :

Command: limits


Specify lower left corner or [ON/OFF] : 0,0


Command: zoom



Regenerating model.

Command: line



Specify next point or [Undo]: Enter

Command: polygon

Enter number of sides : 6

Specify center of polygon or [Edge]: 200,100

Enter an option [Inscribed in circle/Circumscribed about circle] : I

Specify radius of circle: 50

Command: line




Command: line




Command: line



Specify next point or [Undo]:



Command: line




Command: line






Command: line




Command: line




Command: line




Command: line







Select objects:

Specify base point or [Displacement] : Specify second point or

:

Specify second point or [Exit/Undo] :

Command: line





Analyzing internal islands...

Pick internal point or [Select objects/remove Boundaries]:

Pick or press Esc to return to dialog or :

Pick or press Esc to return to dialog or :

Result:

Thus the section of solid of a given Hexagonal prism solid was drawn using

AutoCAD.

Ex.No: 11

Date :

ISOMETRIC VIEW OF A SIMPLE OBJECT

Aim :

To draw isometric view for the given diagram.

Software Used :

AutoCAD 2006

Procedure :

Command: limits

Command: limits




Command: zoom



Regenerating model.



Command: line




Specify next point or [Close/Undo]: 60






Command:line

LINE Specify first point:




Command: line

Specify first point:













Command: line

Specify first point: specify the top of the two corner edges


Command: line





Command: ellipse

Specify axis endpoint of ellipse or [Arc/Center/Isocircle]: iso

Specify center of isocircle:

Specify radius of isocircle or [Diameter]: 30

Enter

Command: ellipse



Specify radius of isocircle or [Diameter]: 12.5

Enter

Command: line





Command:ELLIPSE

Specify axis endpoint of ellipse or [Arc/Center/Isocircle]:

Specify other endpoint of axis: Enter



Command:ELLIPSE



Specify radius of isocircle or [Diameter]: 12.5

Enter.

Command: line





Command: line






Result:

Thus the isometric view for the given diagram was drawn using AutoCAD.



Ex.No: 12

Date :

SIMPLE TRUSS

Aim :

To draw the simple steel truss using AutoCAD software.

Software Used :

AutoCAD 2006

Procedure :

Command: limits




Command: zoom



Regenerating model.

Command: '_quickcalc

Command: line





Result:

Thus the drawing of the simple steel truss was drawn using AutoCAD.

ME2155 - Computer Aided Drafting & Modeling Laboratory

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Transcript of ME2155 - Computer Aided Drafting & Modeling Laboratory