Manufacturing Technology Exam for Mechanical Engineering Students - Autumn 2007, Exams of Manufacturing Technologies

Download Manufacturing Technology Exam for Mechanical Engineering Students - Autumn 2007 and more Exams Manufacturing Technologies in PDF only on Docsity! Cork Institute of Technology Bachelor of Engineering in Mechanical Engineering – Stage 1 (NFQ Level 7) Autumn 2007 Manufacturing Technology (Production & Welding) (Time: 3 Hours) Instructions Answer FIVE questions, THREE from Section A and Two questions from Section B. Answers in ink, diagrams in pencil Use separate answer books for each Section. All questions carry equal marks. Examiners: Mr. M. Daly Mr. R. Kennedy Mr. J. Burns Mr. J. Connolly Dr. P. Delassus Section A Q1. (a) Give one use for a cross cut chisel and state the percentage carbon. (4 marks) (b) Give a use for an engineer’s straight pein hammer and state the percentage carbon in the head. (4 marks) (c) What material is used in hacksaw blades and what pitch of teeth should be used in a blade to cut 4mm steel tubing? Give reasons for your answer. (5 marks) (d) Give a use for an abra file and state the direction in which it cuts. (4 marks) (e) What advantages does a pad-saw have over a hacksaw and state where it might be used? (3 marks) Q2. (a) Name three materials that can be drilled without coolant and three materials that require soluble oil when drilling. (6 marks) (b) Distinguish between counter boring and spot facing. (4 marks) (c) Explain how a broken stud can be removed from a metal block using a suitable screw extractor. (6 marks) (d) Name and describe with a diagram the tool used to find the centre line of a parallel piece of material. (4 marks) 2 Q3. (a) Give two uses for a copper mallet. (3 marks) (b) Explain clearly how an outside calipers is set when checking the diameter of a round bar. (4.5 marks) (c) Name three standard grades of cut of file in common use. (4.5 marks) (d) State the difference between a flat file and a hand file. Use neat diagrams where necessary. (4 marks) (e) What type of file is suited to file aluminum and give a reason for your answer? (4 marks) Q4. (a) List five steps to obtain a good finish on a lathe exercise. (5 marks) (b) When using a knurling tool on the lathe list five steps to ensure a good knurl on the workpiece. (5 marks) (c) When drilling a hole on the end of a bar in the lathe, describe how the depth of the hole is measured accurately. (3 marks) (d) State the precautions to be taken when using a centre drill. (4 marks) (e) What criteria governs the speed at which a lathe is run when turning? (3 marks) Q5. (a) List six workpiece features which are produced by milling? (4 marks) (b) Name six important parts of a milling machine. (4 marks) (c) Name four cutters in a vertical milling machine and give a use for two of them. (6 marks) (d) What type of cutter is used in a vertical milling machine to (i) drill a hole (ii) mill a closed end slot (iii) mill a groove through a workpiece? (3 marks) (e) List three factors which affect milling operations. (3 marks)