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CORK INSTITUTE OF TECHNOLOGY
INSTITIÚID TEICNEOLAÍOCHTA CHORCAÍ
Autumn Examinations 2008/
Module Title: Manufacturing Technology
Module Code: MECH
School: Mechanical & Process Engineering
Programme Title: Bachelor of Engineering Mechanical Engineering Bachelor of Engineering Manufacturing Engineering
Programme Code: EMECH_7_Y3 EMANF_7_Y3 EMECN_7_Y
External Examiner(s): Mr. Alan Bateman, Dr. Patrick Delassus
Internal Examiner(s): Mr James Calvey Mr. Peter Curtin
Instructions: Answer Question 1 and 2 other questions.
Duration: 2 Hours
Sitting: Autumn 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 – Compulsory
(a) State Taylors tool life equation and define each of the terms. (4 Marks)
(b) The following data was obtained from a cutting test:
γ φ .d^ .f^ l^1 l^2 Fa Fv 19 o^90 o^ 4mm 0.25mm/rev 30.5mm 12.5mm 430N 1000N
Use Merchants analysis to calculate: (i) The magnitude and direction of the resultant force (5 Marks) (ii) The shear plane angle (5 Marks) (iii) The friction force (5 Marks) (iv) The coefficient of friction (5 Marks)
(c) List the advantages and disadvantages of external centerless grinding. (4 Marks)
(d) Name FOUR cutting tool materials used in Industry today and list one typical application for each. (4 Marks)
(e) List and explain FOUR outcomes achieved by Honing. (4 Marks)
Q
(a) The plug method is to be used to check the pitch diameter of a 36T tooth, 5mm module, 20 o^ Pressure angle spur gear, calculate (i) The plug size (ii) Distance over plugs placed in opposite spaces (iii) Distance over plugs spaced 10 teeth apart (12 Marks) Write a note on ONE of the following: Gear Burnishing Gear Shaving (8 Marks)
(b) Calculate the gear tooth vernier settings to measure a 33 Tooth, 2.5mm module, 20o pressure angle spur gear for tooth thickness for (i) Pitch Line (4 Marks) (ii) Constant chord (4 Marks)
(c) List FOUR advantages/disadvantages of Hot Working over Cold working. (4 Marks)
