National Skills Olympic 2017_Mechanical Engineering Design-CAD (CADD)
Competitor Station No. :_____________________
MECHANICAL ENGINEERING DESIGN - CAD
Module 3 – Day 2
Reverse Engineering from a Physical Model - 5 hours
INSTRUCTIONS
1. Do not open this question paper until you are told to do so.
2. Write your Station Number clearly at the top right-hand corner on the front page of this question paper.
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.
