Manufacturing Technology Exam for Mechanical Engineering Students - Autumn 2008, Exams of Industrial Technology

Download Manufacturing Technology Exam for Mechanical Engineering Students - Autumn 2008 and more Exams Industrial Technology in PDF only on Docsity! Cork Institute of Technology Bachelor of Engineering in Mechanical Engineering – Stage 2 (EMECH_7_Y2) Autumn 2008 MANUFACTURING TECHNOLOGY- (Production Technology & Welding) (Time: 3 Hours) Answer Five questions. Three from Section A Examiner: Mr. R. Kennedy and TWO from Section B. Mr. J. Burns All questions carry equal marks. Dr. P. Delassus User separate answer books for Sections A and B. Mr. A. Bateman Section A 1.(a) The spindle speeds of a machine tool are usually arranged in a certain sequence. Name the sequence and state the necessity for it. (6 marks) (b) Describe how an imperial thread is cut on a metric lathe. (10 marks) (c) When turning work between centres in a lathe, it is found to be slightly tapered. Give two possible causes for this fault and state how they might be eliminated. (4 marks) 2. (a) State how the capacity of (i) a horizontal milling machine and (ii) a vertical milling machine is identified. (4 marks) (b) Give the angle, the sizes and type of taper on the bore of vertical milling machine spindles. (4 marks) (c) Why is a reversible motor fitted to the vertical milling machine? (4 marks) (d) How is the vertical spindle prevented from creeping downwards when using a vertical milling machine? (4 marks) (e) When milling what precautions should be taken to prevent vibration and chatter? (4 marks) 3. (a) State the functions of a standards room. (4 marks) (b) If the centre distance between rollers of a sine bar is 100mm, calculate the height of the slip gauge pile to measure an angle of 23.2º. (4 marks) (c) Describe and explain the use of “protector” slip gauges. (4 marks) (d) List four precautions to be observed in the care and use of slip gauges. (4 marks) (e) Give an example of where button boring is carried out in the workshop. (4 marks)