Module 3 - CADD_LKS2017

Competitor Station No. :_____________________

MECHANICAL ENGINEERING DESIGN - CAD
Module 3 – Day 2
Reverse Engineering from a Physical Model - 5 hours

INSTRUCTIONS
1.
2.
3.

Do not open this question paper until you are told to do so.
Write your Station Number clearly at the top right-hand corner
on the front page of this question paper.
Return this question paper at the end of the test.

National Skills Olympic 2017_Mechanical Engineering Design-CAD (CADD)

Task
: Reverse Engineering from a Physical Model
Time Allocation : 5 hours (part will be taken away after 2 hours)

I.

Given
a. A physical model of ……………………... The material is
Aluminium 6061
b. The Top, Front, X-X cutting plane, and Y-Y cutting plane
are all indicated on the model

II.

Notes
a. Accuracy of machined surface measurement is ± 0.5
mm.
b. Accuracy of cast surface measurement is ± 1 mm.
c. Accuracy of angle measurement is ±2.
d. Details such as parting lines, tolerances, draft angle,
trademarks etc are not required.

III.


Tasks and Output
a. 3D Solid Model
Create a 3D solid model of …………………….. Small fillet,
round and chamfer are not required to produce.
b. 3D View Drawings (scale 1 : 1)
Create and label following 3D shaded isometric view in
A2 size paper showing:
i. An isometric view showing top, front and right side
ii. An isometric view showing bottom, back and left
side
iii. X-X sectional isometric view showing top, right and
back
iv. Y-Y sectional isometric view showing front, top and
left
c. 2D Detail Drawings (scale 1 : 1)
Create and label the following views in either first or
third angle projection in A2 size paper showing:
i. Front view
ii. Side view from left of the front view
iii. Bottom view

iv. Section from view at cutting plane X-X
Dimensions for the machined surface and major
dimensions are required. Surface finishing symbols are
required. The value of weight and material are indicated.

National Skills Olympic 2017_Mechanical Engineering Design-CAD (CADD)