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CORK INSTITUTE OF TECHNOLOGY
INSTITIÚID TEICNEOLAÍOCHTA CHORCAÍ
Semester 1 Examinations 2009/
Module Title: Manufacturing Engineering & Quality Systems
Module Code: MANU 6012
School: Mechanical & Process Engineering
Programme Title: Bachelor of Engineering in Mechanical Engineering – Year 2 Bachelor of Engineering in Biomedical Engineering – Year 2
Programme Code: EMECH_7_Y EBIME_7_Y
External Examiner(s): Mr. Alan Bateman, Dr. D. Fitzpatrick
Internal Examiner(s): Mr. Michael Walsh
Instructions: Attempt THREE out of five questions. All questions carry equal marks.
Duration: 2 hrs
Sitting: Winter 2009
Requirements for this examination:
Note to Candidates: Please check the Programme Title and the Module Title to ensure that you have received the correct examination paper. If in doubt please contact an Invigilator.
Q1 Compare the operations of Sand Casting and Investment Casting. Include simple diagrams to aid you.
List the main casting defects; state the reasons for them and ways of preventing them.
Briefly compare slow and fast cooling rates for castings.
Q2 With the aid is a sketch, show and name the 3 main angles in relation to a cutting tool.
Describe and sketch the 3 types of chip formation.
Using the equation ( ) 60
W
F N
P t
Find the increase in power required to turn a 100mm diameter mild steel bar at 80rpm and 160rpm when the tangential cutting force is 350N in both cases.
Q3 State Taylor’s Principle of Gauging.
Use Diagrams to illustrate the following i. Transition Fit ii. Clearance Fit iii. Interference Fit
A Cast Iron pulley is to fit over a mild steel shaft with a brass bush to fit between them, fig. 1. Using Table 1.1 find suitable tolerances between the pulley and bush and the bush and shaft.
