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SCHOOL OF DILOMA STUDIES, RK. University, RAJKOT
MECHANICAL DRAFTING.
LABORATORY MANUAL
MECHANICAL DRFTING
(DME201)
PREPAIRED BY
SHIRAJ R.S.
MECHANICAL DEPARTMENT
SCHOOL OF DIPLOMA STUDIES,
R.K. UNIVERSITY
KASTURBADHAM, RAJKOT-360020
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SCHOOL OF DILOMA STUDIES, RK. University, RAJKOT
MECHANICAL DRAFTING.
SHEET No.-1 MULTIVIEW PROJECTION
Que. Draw following views of the pictorial drawing given in figure using first
Angle projection and give dimensions according to unidirectional method.1. Front view, 2. Top view, 3. Bottom view, 4. Left hand side view
5. Left hand side view 6.rear view.
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MECHANICAL DRAFTING.
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SCHOOL OF DILOMA STUDIES, RK. University, RAJKOT
MECHANICAL DRAFTING.
SHEET No.-2 PROJECTION OF SOLIDS
Que.-1 A Square Pyramid of base side 30 mm and Axis 80 mm long is lying onH.P. Such that its base sides are equally (45) inclined to V.P. and one
of its slant edge is perpendicular to H.P. draw its Projections.
Que.-2 A Cylinder 40 mm diameter and 50 mm axis is resting on one point of a
base circle on H.P. while its axis makes 450 with H.P. and plane of the
axis 350 with V.P. Draw Projections.
Que.-3 A Regular hexagonal Pyramid, side of base 35 mm and height 70 mm is
resting on one of its triangular faces on the H.P. and the edge of base
contained by that triangular face make an angle of 30 with V.P. Draw
its Projections.
Que.-4 Draw the Projections of a cone having base diameter 50 mm and axis 60
mm long, when it is resting on the H.P. on a Point on its base circle in
such way that one of its generator to the H.P. and the plan of axis makes
an angle of 45 with V.P.
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MECHANICAL DRAFTING.
SHEET No.-3 SECTIONS OF SOLIDS
Que.-1 A Cylinder of 50 mm base diameter and 80 mm long axis is standing on
the H.P. on its base. A section plane which is perpendicular to V.P. and
inclined at 45 H.P. is bisecting the axis of the cylinder. Draw the front
view, sectional top view and true shape of Section.
Que.-2 A Cone having base diameter 60 mm and axis 80 mm long is standing on
its circular base on the H.P. A section plane making an angle of 45 with
the H.P. and passing the midpoint of axis cutting this cone. Draw the front
view, sectional top view and true shape of section.
Que.-3 A hexagonal Pyramid 30 mm base side and height 70 mm long axis is
resting on its triangular faces on the H.P. Its axis is parallel to V.P. A
horizontal cutting plane bisects the axis of Pyramid. Draw sectional top
view and true shape of the section.
Que.-4 A cone 50 mm diameter and axis 60 mm long is resting on the H.P. on its
base. A Vertical cutting plane inclined at 60 to V.P. and perpendicular to
H.P. cuts this cone 7 mm away from its axis. Draw sectional front view
and true shape of the section.
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SHEET No.-4 D
Que. 1 Fig-A shows a v
surface develop
Que.2 Fig -B show the
as shown. Draw
Fig.-A
Que.3 Fig -C show view
.
Que.4 Fig-D shows a vie
SCHOOL OF DILOMA STUDIES, RK. Univers
MECHANICAL DRAFTI
VELOPMENT OF SURFACES
iew of hexagonal prism, side of base 30 mm. D
ent of part-A.
part of cone and part of cylinder joined with
the development of lateral surfaces A and B.
Fig.-B
f an object, draw development of the surface o
if cylinder. Draw the surface development of
ty, RAJKOT
G.
aw
ach other
f part A
part -P.
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Fig.-C
SCHOOL OF DILOMA STUDIES, RK. Univers
MECHANICAL DRAFTI
Fig.-D
ty, RAJKOT
G.
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SCHOOL OF DILOMA STUDIES, RK. University, RAJKOT
MECHANICAL DRAFTING.
SHEET No.-5 INTERSECTION OF SOLIDS
Que.1 A square prism 30 mm base sides and 70 mm axis is completely penetrated
by another square prism of 25 mm sides and 70 mm axis, horizontally. Both
axis intersects & bisects each other at right angle. All faces of prisms are
equally inclined to V.P. Axes of both are parallel to V.P. Draw Projections
showing curves of intersections.
Que.2 A Vertical Cone having base diameter 75 mm and axis 110 mm long is
resting on the H.P. on its base. A cylinder of 40 mm diameter, intersects the
axis of the cone at right angle and 27 mm above the base. The axis of the
cylinder is parallel to both H.P. and V.P. Draw the projections with showing
lines of intersections.
Que.3 A vertical cylinder of 50 mm base diameter is penetrated by another cylinderof same dimensions. The axis of the penetrating cylinder is parallel to H.P.
and V.P. as well as 7 mm away from the axis of vertical cylinder. Draw
their projections showing the curves of intersection.
Que.4 A square vertical prism having 50 mm base sides is penetrated by another
horizontal prism of 30 mm sides. The axis of the penetrating solid is 7 mm
in front of the vertical Prism. If the rectangular faces of both the prism are
equally inclined to V.P. then draw Projection showing the lines of
intersection.
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SHEET No.-6
A.) Draw a details of1. Cotter joint with2. Knuckle joint in f
SCHOOL OF DILOMA STUDIES, RK. Univers
MECHANICAL DRAFTI
DETAILS & ASSEMBLY DRA
iven assembly:
leeve in fig.-aig.-b
FIG.-b
ty, RAJKOT
G.
ING
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SCHOOL OF DILOMA STUDIES, RK. University, RAJKOT
MECHANICAL DRAFTING.
SHEET No.-7 LIMITS AND FITS
QUE.-1 In a drawing fit is shown 60H7g6 .Draw fit diagram and find.
1. Max. & Min. limits for hole.2. Max. & Min. limits for shaft.3. Tolerance for shaft & hole.4. Max. & Min. clearance, if any.5. Max. & Min. interference, if any.6. Type of fit.7. Reason for type of fit.
For 60 mm diameter deviations in microns are
QUE.-2 In a drawing fit is designated as 120H6e8 .Draw fit diagram and find1. Max. & Min. limits for hole.2. Max. & Min. limits for shaft.3. Tolerance for shaft & hole.4. Type of fit.5. Reason for type of fit.
Deviation in microns for 120 mm diameter as per IS-919 is as under
QUE.-3 A 25 mm diameter shaft & hole pair is designated as H8d9. Findtolerance and allowance limit using information given bellow. Give your
opinion the applicability of this type of fit.
QUE.-4 The following information is for a hole & shaft. Hole 50+0.05
-0.00 mm
& shaft 50
-0.05
-0.05 mm. Draw free hand fit diagram for this pair &answer the following Question by computation.
1. Max. & Min. limit for Hole & Shaft.2. Tolerance for Hole & Shaft.3. Max. & Min. clearance, if any4. Type of fit.
Upper Lower
H7 +25 +00
g6 -09 -25
Upper Lower
H6 +22 +00
e8 -78 -128
Hole H8 Shaft d9
Go 0.00 -0.065
Not Go 0.033 -0.117
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SCHOOL OF DILOMA STUDIES, RK. University, RAJKOT
MECHANICAL DRAFTING.
SHEET No.-8 WELDING, MACHINING SYMBOLS &
PIPING DRAWING
1. SYMBOL OF CONVETION FOR WELDING. (Page No.-207, GTUM.D. Text Book By S.V.Gosai)
2. MACHINING SYMBOLS. (Page No.-217, GTU M.D. Text Book ByS.V.Gosai)
3. STANDARD SYMBOLS FOR FLANGED & THREADED PIPESFITTING & VALVES. (Page No.-223, GTU M.D. Text Book By
S.V.Gosai)
4. SYMBOL & LAYOUT OF PIPING. (Page No.-221, GTU M.D. TextBook By S.V.Gosai)