HINDUSTHAN
COLLEGE OF ENGINEERING
AND TECHNOLOGY
Coimbatore – 641032
Anna University Anna University - Chennai
DEPARTMENT OF MECHANICAL ENGINEERING
GE6261 - COMPUTER AIDED DRAFTING AND MODELING LABORATORY
II SEMESTER 2014-2015
REG. NO.
:
NAME
:
COURSE
:
YEAR/SEM :
INDEX
EXP.
NO.
DATE
EXPERIMENT NAME
PAGE
NO.
MARKS
STAFF
INITIAL
GE6261
COMPUTER AIDED DRAFTING AND MODELING LABORATORY
LTPC
0122
List of Exercises using software capable of Drafting and Modeling
1. Study of capabilities of software for Drafting and Modeling – Coordinate systems
(absolute, relative, polar, etc.) – Creation of simple figures like polygon and general
multi-line figures.
2. Drawing of a Title Block with necessary text and projection symbol.
3. Drawing of curves like parabola, spiral, involute using Bspline or cubic spline.
4. Drawing of front view and top view of simple solids like prism, pyramid, cylinder,
cone, etc, and dimensioning.
5. Drawing front view, top view and side view of objects from the given pictorial views
(eg. V-block, Base of a mixie, Simple stool, Objects with hole and curves).
6. Drawing of a plan of residential building (Two bed rooms, kitchen, hall, etc.)
7. Drawing of a simple steel truss.
8. Drawing sectional views of prism, pyramid, cylinder, cone, etc,
9. Drawing isometric projection of simple objects.
10. Creation of 3-D models of simple objects and obtaining 2-D multi-view drawings from
3-D model.
Note: Plotting of drawings must be made for each exercise and attached to the
records written by students.
List of Equipments for a batch of 30 students:
1. Pentium IV computer or better hardware, with suitable graphics facility -30 No.
2. Licensed software for Drafting and Modeling. – 30 Licenses
3. Laser Printer or Plotter to print / plot drawings – 2 No.
TOTAL: 45 PERIODS
COMPUTER AIDED DRAFTING AND MODELING LABORATORY
List of Exercises using software capable of Drafting and Modeling
1. Study of capabilities of software for Drafting and Modeling – Coordinate
systems (absolute, relative, polar, etc.) - Creation of simple figures like
polygon and general multi-line figures.
2. Drawing of a Title Block with necessary text and projection symbol.
3. Drawing of curves like parabola, spiral, involute using Bspline or cubic spline.
4. Drawing of front view and top view of simple solids like prism, pyramid,
cylinder, cone, etc, and dimensioning.
5. Drawing front view, top view and side view of objects from the given pictorial
views (eg. V-block, Base of a mixie, Simple stool, Objects with hole and
curves).
6. Drawing of a plan of residential building ( Two bed rooms, kitchen, hall, etc.)
7. Drawing of a simple steel truss.
8. Drawing sectional views of prism, pyramid, cylinder, cone, etc,
9. Drawing isometric projection of simple objects.
10. Creation of 3-D models of simple objects and obtaining 2-D multi-view
drawings from 3-D model.
EX NO: 01
DATE:
CREATION OF SIMPLE FIGURES LIKE POLYGON AND GENERAL
MULTI-LINE FIGURES
AIM:
To draw the simple figures like polygon and Multi-Line figures using any drafting
software.
COMMANDS USED:
1. Limits,
2. Zoom,
3. Line,
4. Dimlinear.
PROCEDURE:
Construct a regular Pentagon and Hexagon of side 35mm
RESULT:
EX NO: 02
DATE:
DRAWING A TITLE BLOCK WITH NECESSARY
TEXT AND PROJECTION SYMBOL
AIM:
To draw a title block with necessary text and projection symbol using any drafting software.
COMMANDS USED:
1. Limits,
5.Offset,
2. Zoom,
6.Trim,
3. Line,
7.Dimlinear etc.
4. Rectangle,
PROCEDURE:
RESULT:
EX NO: 03
DATE:
DRAWING OF CURVES LIKE PARABOLA, SPIRAL, INVOLUTE
USING BSPILNE OR CUBIC SPLINE
AIM:
To draw a given curves using B spline or Cubic spline commands using any drafting
software.
COMMANDS USED:
1. Limits,
5.Offset,
2. Zoom,
6.Trim,
3. Line,
7.Dimlinear etc.
4. Rectangle,
PROCEDURE:
1. Construct a parabola using rectangle method whose double ordinate , RS=70mm
and abscissa KV=30mm
2. Draw the locus of Point P for one revolution of the Link (Archimedean Spiral)
whose OA = 60mm, N = 1
3. Draw the involute of a Hexagon of side 25mm side.
RESULT:
ADDITIONAL QUESTIONS
1. Trace the different conic sections when the distance of the focus from the directrix is 30 mm
and eccentricity is : i) equal to 7/9, ii) equal to 1 and iii) equal to 9/7. Name the curves.
2. A shot is discharged from the ground level at an inclination of 50o to the ground which is
assumed to be horizontal. The shot returns to the ground at a point 80 m distant from the point
of discharge. Trace the path of the shot. Take suitable scale
3. Draw the involute of a pentagon of 20 mm side.
4. Draw the involute of a circle of diameter 40 mm. Also draw a tangent and normal at any point
on the curve.
5. Construct an Archimedean spiral for one revolution. The initial and final radius vectors are
25 mm and 100 mm respectively. Draw a tangent and the normal to the spiral at a point 50
mm from the pole.
6. Construct an ellipse with the major and minor axes lengths 90 mm and 50 mm respectively
using a standard drafting package.
7. Construct a parabola when the distance between focus and the directrix is 40 mm
using a standard drafting package.
EX NO: 04
DATE:
DRAWING OF FRONT VIEW AND TOP VIEW OF SIMPLE SOLIDS
LIKE PRISM, PYRAMID, CYLINDER, CONE AND DIMENSIONING
AIM:
To draw the front view and top view of simple solids like Prism, Pyramid, Cylinder,
Cone and Dimensioning using any drafting package.
COMMANDS USED:
1. Limits,
5.Offset,
2. Zoom,
6.Trim,
3. Line,
7.Dimlinear etc.
4. Rectangle,
PROCEDURE:
1. A square prism of 40mm base and 60mm length. Axis is perpendicular to the HP and
one of its rectangular face parallel to the VP. Draw its front view and top view.
2. A cylinder of base 60mm diameter and height 80mm has its axis perpendicular to HP.
Draw its front view and top view.
3. A pentagonal pyramid of 35mm and 70mm height is resting on hp on its base
draw its front view and top view
RESULT:
ADDITIONAL QUESTIONS
1. Draw the projections of a pentagonal prism 20 mm side of base and axis 40 mm long
resting on a corner such that the two base edges passing through it make equal inclinations
o
o
with HP and its base is inclined at 60 to HP, and the axis appears to be inclined at 30 to
the VP in the top view. Insert dimensions suitably.
2. A hexagonal prism base 20 mm side and axis 40 mm long is placed with one of its base
edges on HP such that the axis is inclined at 30o to HP and 45o to VP. Draw its projections.
Insert dimensions suitably
3. A pentagonal pyramid 20 mm side of base and axis 35 mm long rests with one of its
corners on HP such that the two base edges passing through the corner on which it rests make
o
o
equal inclination with HP. The axis is inclined at 45 to VP and 30 to the HP. Draw the top
and front views of the pyramid. Insert dimensions suitably.
4. A hexagonal pyramid, base 30 mm side and axis 60 mm long has one of its slant edges on HP
such that two of its triangular faces containing the slant edge on which it rests are equally
inclined to HP. The top view of the axis appears to be inclined at 45o to VP. Draw its
projections when its base is nearer to the observer than its apex. Insert dimensions suitably.
5. A cone of base 80 mm diameter and height 100 mm is lying with one of its generators on
HP and the axis appears to be inclined to the VP at an angle of 40o in the top view. Draw its
top and front views. Insert dimensions suitably.
6. Draw the top and front views of a right circular cylinder of base 45 mm diameter and 60
mm long when it lies on HP, such that its axis is inclined at 30o to HP and the axis appears to
be perpendicular to the VP in the top view. Insert dimensions suitably.
7. A hexagonal headed bolt without chamfer is 30 mm in diameter and cylindrical portion is 65
mm long. The sides of the faces of the hexagonal head are 30 mm in length and the thickness
of the hexagonal head is 25 mm. The bolt is placed with horizontal edge of the head on
ground such that it is perpendicular to VP and the axis of the bolt is inclined at 30o to HP.
Draw the top and front views of the bolt. Insert dimensions suitably.
Draw the front and top view of the solid shown in the figure below using a standard drafting
package.
1) Base Edge length =40mm
Axis Length = 60mm
2) Base Edge length =40mm
Axis Length = 70mm
ALL DIMENSIONS ARE IN mm
3) Base diameter = 40mm
Altitude = 60mm
4) Base Edge length =40mm
Axis Length = 70mm
5) Base Edge length =40mm
Axis Length = 60mm
6) Base Edge length =40mm
Axis Length =100mm
ALL DIMENSIONS ARE IN mm
EX NO: 05
DATE:
DRAWING OF FRONT VIEW, TOP VIEW AND SIDE VIEW OF
OBJECTS FROM THE GIVEN PICTORIAL VIEWS
AIM:
To draw the front view and top view and side view of Objects from the given Pictorial
views.
COMMANDS USED:
1. Limits,
5.Offset
2. Zoom,
6.Trim,
3. Line,
7.Dimlinear etc.
4. Rectangle,
PROCEDURE:
RESULT:
ADDITIONAL QUESTIONS
Draw the front, top and right hand side views of a bearing block shown in Fig.
Isometric view of the bearing block
Draw the front, top and right hand side views of a half journal block shown in Fig.
Isometric view of the half journal bearing
All dimensions are in mm
Draw the front view, top view and right side view of the ‘V Block’ shown in figure using a
standard drafting package.
Draw the front view, top view and side view of the object shown in the figure using a standard
drafting package.
All dimensions are in mm
Draw the front view, top view and side view of the object shown in figure. Insert dimensions suitably.
All dimensions are in mm
EX NO: 06
DATE:
DRAWING OF A PLAN OF A RESIDENTIAL BUILDING
AIM:
To draw the plan of a residential Building using any drafting package.
COMMANDS USED:
COMMANDS USED:
1. Limits,
5.Offset
2. Zoom,
6.Trim,
3. Line,
7.Dimlinear, etc.
4. Rectangle,
PROCEDURE:
All dimensions are in mm
RESULT:
ADDITIONAL QUESTIONS
1. For 30 feet X 40 feet (9.144 m X 12.19 m) land area is to be constructed by leaving 2 feet
(0.609 m) space at all four sides. And in the remaining area a house is to be constructed
with 2 no’s of bed rooms, kitchen and 2 no’s of bath cum toilet one attaching to bed room
and other as common. Draw the plan for this residential house.
2. For 40 feet X 40 feet (12.19 m X 12.19 m) land area is to be constructed by leaving 2 feet
(0.609 m) space at all four sides. And in the remaining area a house is to be constructed
with 3 no’s of bed rooms, kitchen and 3 no’s of bath cum toilet each attaching to bed room.
Draw plan for this residential house.
3. Draw a plan of residential building with one bedroom, kitchen, and hall etc using software.
4.
Draw a plan of residential building with two bedrooms, kitchen, and veranda etc using
software.
5 . Draw the following Plan of the residential building with suitable wall thickness.
Window W = 1600 × 1200; Door D1 = 1000 ×
1950 mm Window W1 = 1200 × 1200; Door D2 =
900 × 1950 mm Window W2 = 1000 × 1200;
Door D3 = 800 × 1950 mm Ventilator V = 600 ×
450 mm
All dimensions are in mm
6. Draw the following Plan of the residential building with suitable wall thickness.
All dimensions are in mm
D : 1100 × 2200 mm, D1 : 800× 2200 mm; W : 1200 × 1200 mm; V : 800 × 600 mm
All dimensions are in mm
EX NO: 07
DATE:
DRAWING OF A SIMPLE STEEL STRESS
AIM:
To draw the Simple Steel Stress using any standard drafting package.
COMMANDS USED:
1. Limits,
5.Offset
2. Zoom,
6.Trim,
3. Line,
7.Dimlinear, etc.
4. Rectangle,
PROCEDURE:
a
b
c
e
d
a= Pratt bottom Chord
b= Warren bottom Chord
c= Hip Stepown
d= Belgian
e= Howe Bottom Chord
RESULT:
ADDITIONAL QUESTIONS
1. Draw the simple steel truss shown in the figure using a standard drafting package.
2.
Draw the simple steel truss shown in the figure using a standard drafting package. List out
the commands used
Overall Base length = 1300 mm
Height = 400 mm, Overhang on each side = 200mm
3.
Draw the simple steel truss shown in the figure using a standard drafting package.
Overall Base length = 1200 mm
Height = 350 mm
EX NO: 08
DATE:
DRAWING SECTIONAL VIEWS OF PRISM, PYRAMID, CYLINDER
AND CONE
AIM:
To draw the Sectional views of Prism, pyramid, Cylinder, and Cone using any drafting
package.
COMMANDS USED:
1. Limits,
5.Offset
2. Zoom,
6.Trim,
3. Line,
7.Dimlinear, etc.
4. Rectangle,
PROCEDURE:
RESULT:
ADDITIONAL QUESTIONS
1. A hexagonal pyramid 25 mm edge of base and axis 65 mm lies with a triangular face on
HP and the axis parallel to VP. A section plane perpendicular to HP and inclined at 30o to VP
bisects the axis of the pyramid. Draw the sectional front view and true shape of section.
Insert dimensions suitably.
2. A cylinder 60 mm diameter and 80 mm long stands with its circular base on HP.A section
o
plane perpendicular to VP and inclined at 60 to HP cuts the axis at a point 28 mm from its
top end. Draw the sectional top and right views and the true shape of section. Insert
dimensions suitably.
3. A cone diameter of base 60 mm and axis 70 mm long is resting on its base on HP. It is cut by
a section plane perpendicular to VP and inclined at 45o to HP. The vertical trace of the
section plane passes through the axis at a point 40 mm above HP. Draw the sectional top
view, front view and the true shape of section. Insert dimensions suitably.
4. A cube of 30 mm edges is cut by a section plane so that the true shape of section is a
regular hexagon. Draw the projections of the cube and find the inclination of the section
plane with HP. Also measure the length of the sides of the regular hexagon in the true
shape of section. Insert dimensions suitably.
5. Draw a hexagonal prism, has a face on the ground and the axis parallel to the V.P. It is cut by
a vertical section plane, the H.T. of which makes an angle 45o with xy and which cuts the axis
at a point 20 mm from one of its ends. Draw the sectional front view and the true shape of
the section. Side of base 25 mm long, height 65 mm. Insert dimensions suitably.
6. A pentagonal pyramid, base 30 mm side and axis 65 mm long, has its base horizontal and an
edge of the base parallel to the V.P. A horizontal section plane cuts it at a distance of 25 mm
above the base. Draw its front view and sectional top view. Insert dimensions suitably.
7. A cylinder of 40 mm diameter, 60 mm height and having its axis vertical, is cut by a
section plane, perpendicular to the V.P., inclined at 45o to the H.P. and intersecting the
axis 32 mm above the base. Draw its front view, sectional top view, sectional side view and
true shape of the section. Insert dimensions suitably.
8. A cone, diameter of base 50 mm and axis 50 mm long is resting on its base on the ground.
o
It is cut by a section plane perpendicular to the V.P., inclined at 75 to the H.P. and passing
through the apex. Draw its front view, sectional top view and true shape of the section.
Insert dimensions suitably.
9. Draw the sectional views of the following prism
Prism height
= 100mm
Base edge
= 40mm
One of its base edges parallel to VP Sectional Plane 20mm away from its axis.
10. Draw the sectional views of the following frustum of cone.
Frustum height = 40mm
Base diameter = 35mm
To
op diameter = 20mm
EX NO: 09
DATE:
DRAWING ISOMETRIC PROJECTION OF GIVEN SIMPLE OBJECT
AIM:
To draw the Isometric Projection of Simple Objects using any drafting software.
COMMANDS USED:
1. Limits,
5.Offset
2. Zoom,
6.Trim,
3. Line,
7.Dimlinear, etc.
4. Rectangle,
PROCEDURE:
Orthographic projections of a V-block
Orthographic projections of a block
RESULT:
ADDITIONAL QUESTIONS
Draw the isometric view of the orthographic view shown in figure’s
EX NO: 10
DATE:
CREATION OF 3-D MODEL OF SIMPLE OBJECT AND OBTAINING
2-D MULTI-VIEW DRAWING FROM 3-D MODEL
AIM:
To draw the 3-D Model of Simple Object and obtaining 2-D Multi-View Drawing from 3-D Model
using any modeling software.
COMMANDS USED:
1. Line,
2. Rectangle,
3. Circle,
4. Extrude,
5. Extrude cut
6. Revolve.
PROCEDURE:
All dimensions are in mm
RESULT:
ADDITIONAL QUESTIONS
Draw the 3D model of the given objects and obtain the 2-D multi-views.
All dimensions are in mm
All dimensions are in mm