Mvs 311 Unit 3 Research Paper
Copyright reserved | Department of Mechanical Engineering | Semester Test 2 - 2011 | | Manufacturing Systems MVS 311 | Date - 15 April 2011 | Duration – 90 minutes This is an open book examinationInternal examiner: Mr E.T. BrettExternal examiner: Mr. J.J. Pienaar | * Answer ALL THE questions. * State and motivate all assumptions clearly. * Please Note: All questions do not carry the same marks. * This paper consists of 2 pages | |
Question One a Establish the initial total length of a 12 mm round material slug required to manufacture a bolt by upset forging the bolt head and by impact extruding the shank portion where the thread is required. The bolt has the following dimensions (12 mm shank diameter, 20 mm unthreaded portion of shank, 30 mm length of threaded portion on the shank, m12 x 1.75 thread with a bolt shank pitch diameter of 10.75 mm, 19 mm bolt head width across flats, 8 mm bolt head thickness). …show more content…
at each station i. Calculate the new diameter of the rod after the first station. ii. Calculate the diameter of the “wire” after it has passed through four stations. iii. Establish the percentage increase in length of the wire after the wire has passed through the four stations.
Question Two
a Describe how the electroplating process applicable to “plastics” functions. b Under what circumstances would the following finishing processes be used: i. Cladding, ii. Burnishing iii. A iv. B
Question Three
Describe what the following mean to you (provide sketches to clarify your answer) a Metal removal rate (state as well the appropriate ISO units that will be used to measure the metal
Question One a Establish the initial total length of a 12 mm round material slug required to manufacture a bolt by upset forging the bolt head and by impact extruding the shank portion where the thread is required. The bolt has the following dimensions (12 mm shank diameter, 20 mm unthreaded portion of shank, 30 mm length of threaded portion on the shank, m12 x 1.75 thread with a bolt shank pitch diameter of 10.75 mm, 19 mm bolt head width across flats, 8 mm bolt head thickness). …show more content…
at each station i. Calculate the new diameter of the rod after the first station. ii. Calculate the diameter of the “wire” after it has passed through four stations. iii. Establish the percentage increase in length of the wire after the wire has passed through the four stations.
Question Two
a Describe how the electroplating process applicable to “plastics” functions. b Under what circumstances would the following finishing processes be used: i. Cladding, ii. Burnishing iii. A iv. B
Question Three
Describe what the following mean to you (provide sketches to clarify your answer) a Metal removal rate (state as well the appropriate ISO units that will be used to measure the metal