Posted: March 3rd, 2022

Assigment Manufacturing Process

FACULTI OF MECHANICAL ENGINEERING UNIVERSITI MALAYSIA PAHANG BMM3643 (Sem II 2012/13) Task #four 1. a) What distinguishes machining from different manufacturing processes? b) What’s a machining heart? c) How necessary is the management of cutting-fluid temperature in operations carried out in machining facilities? Clarify. (eight marks) 2. a) What are the first concerns in software choice? b) What’s the benefit of a helical-tooth cutter over a straighttooth cutter for slab milling? c) What are the results if a chopping software chips? (eight marks) three. ) Why may it’s fascinating to make use of a heavy depth of minimize and a light-weight feed at a given velocity in turning? b) Clarify the reasoning behind the varied design pointers for turning. c) In drilling, the deeper the opening, the larger the torque. Why? (eight marks) four. a) For producing flat surfaces in mass manufacturing machining,how does face milling differ principally from peripheral milling? b) Why is finish milling such an necessary versatile course of? c) Why is grain spacing necessary in grinding wheels? Clarify the connection between grit measurement and floor end. (eight marks) 5. ) Why has the wire-EDM course of turn into so broadly utilized in trade, particularly in software and die manufacturing? Clarify. e) What is supposed by the time period overcut in electrical discharge machining? f) What’s the nature of the floor obtained by electro discharge machining? (eight marks) 6. g) Estimate the time required for face milling an 20. 32 cm-long, 7. 62 cm-wide brass block utilizing a 2032 cm-diameter cutter with 12 HSS tooth. (Given: Utilizing the high-speed-steel software, let’s take a advisable chopping velocity for brass (a copper alloy) at 90 m/min = 1. 5 m/sand the utmost feed per tooth as zero. mm) h) In a floor grinding operation carried out on hardened plain carbon metal, the grinding wheel has a diameter = 200 mm and width = 25 mm. The wheel rotates at 2400 rev/min, with a depth of minimize (infeed) = zero. 05 mm/cross and a crossfeed = three. 50 mm. The reciprocating velocity of the work is 6 m/min, and the operation is carried out dry. Decide ; i) the size of contact between the wheel and the work, ii) the quantity charge of metallic eliminated. iii) If there are 64 energetic grits/cm2 of wheel floor, estimate the variety of chips fashioned per unit time. (10 marks)

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