Lecture 10 Asشsembly Exercises

8/18/2019 Lecture 10 Asشsembly Exercises

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PED | Production Engineering Department | Alexandria University | www.alexu.edu.eg

Drawing of Machine Elements I (PE151)

Lecture 10: Assembly Drawing Exercises


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© PED| Alexandria University | Dr. Mohamed Nassef | No.2

Exercise: Simple Screw Jack Assembly

The following are the different parts of a screw jack. A

screw jack is a lifting tool, the rotation of screw resultsin the vertical movement of the cup, hence, lifting the

load. Assume any missing dimensions. Draw in scale

1:1 in third angle projection the following views:

1. A front view at the axis of the casting (Omit hidden

details).

2. A right side view (Show hidden details).

3. Top View (Omit hidden details).


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Simple Screw Jack Individual Parts

1) Casting

(1 Required - Cast Steel)

3) Screw

(1 Required - Mild Steel)


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Exploded View Solution

Cup

Screw

Casting

Base

Nut

Handle

Set screw and

washer


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Collapsed View Solution


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Exercise 2

The following figures show the detailed components

of a Non Return Valve. The parts are fitted in thefollowing sequence:

1) The valve (Item 3) and valve stop (Item 2) are

assembled to the body (Item 1).

2) The gland bush (Item 5) with the spindle (Item 6)

passing through it is fitted to the body.

3) The gland (Item 4) is screwed into the gland bushand adjusted to prevent any fluid leakage via the

spindle.


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Valve Body (C.I. - 1 Item), Front View


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Valve Body (C.I. - 1 Item), Top View


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Spindle (C.I. – 1 Item Required)


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Gland Bush (C.I. - 1 Item required)


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Valve Stop ( C.I.- 1 Item Required)


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Bush (C.I. – 1 Item Required)


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Valve ( C.I. – 1 Item)


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Valve

Body

+

valve

Spindle

Gland

Bush

+

Bush

Valve

Body


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Exercise 3

Draw with a scale of 1:2 in first angle projection an

assembly drawing comprising the following views:

a) A sectional front view A-A.

b) A top view (showing hidden details).

c) A left side view (showing hidden details).

All dimensions are in mms.

All fillets R = 12 mm unless otherwise stated.

Draw the nut and screw (not shown) in their correct

positions.


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(1) Body

(Ductile Iron – 1 Required)


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(6) Centre

(Cast Alloy Steel – 1 Required)

(2) Barrel



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(4) Spindle


(3) Cap(Cast Alloy Steel – 1 Required)


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(5) Hand Wheel

(Ductile Iron – 1 Required)


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(7) Pin



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Contact

PED | Alexandria University

Abi Kir street, Hadarah

21544 Alexandria

Mohamed Nassef

[email protected]

Lecture 10 Asشsembly Exercises

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