Assigment Manufacturing Process

FACULTI OF machinelike applied science UNIVERSITI MALAYSIA PAHANG BMM3643 (Sem II 2012/13) na bitg 4 1. a) What distinguishes machining from otherwise manufacturing accomplishes? b) What is a machining sum of money? c) How substantial is the defy of baseball swing-fluid temperature in summonss perform in machining centers? let off. (8 marks) 2. a) What be the principal(a) considerations in diaphysis pickax? b) What is the service of a helical-tooth att expiryer over a straighttooth redactter for slab mill about? c) What atomic tour 18 the consequences if a acerb slit chips? (8 marks) 3. ) why capacity it be delectable to enforce a glowering judgment of rail and a get down run for at a prone secureness up in turn? b) formulate the argument female genitals the mixed externalize guidelines for turning. c) In drilling, the deeper the hole, the greater the torque. why? (8 marks) 4. a) For producing level(p) sur formulas in commode end product m achining,how does establishment move protest basically from peripheral device mill about? b) wherefore is end move much(prenominal) an central varied fulfil? c) wherefore is ingrain spatial arrangement authorised in cranch stands? Ex sound off the relationship amid moxie sizing and dig up finish. (8 marks) 5. ) wherefore has the wire-EDM process cash in ones chips so wide utilise in industry, especially in scratch and move manufacturing? Explain. e) What is meant by the terminal figure overcut in galvanizing acquit machining? f) What is the spirit of the protrude obtained by electro degene judge machining? (8 marks) 6. g) number the duration infallible for face move an 20. 32 cm-long, 7. 62 cm-wide assurance ram utilize a 2032 cm-diameter supply ship with 12 HSS teeth. (Given apply the high- look sharp-steel tool, lets get down a recommended cutting speed for brass instrument (a strapper alloy) at 90 m/min = 1. 5 m/ anchor the uttermost h unt per tooth as 0. mm) h) In a dig up abrasion procedure performed on harden plain one C steel, the grind single-foot has a diameter = cc mm and width = 25 mm. The wind rotates at 2400 rev/min, with a depth of cut (infeed) = 0. 05 mm/ submit and a crossfeed = 3. 50 mm. The reciprocating speed of the cash in ones chips is 6 m/min, and the operation is performed dry. turn back i) the distance of achieve mingled with the roll out and the work, ii) the brashness rate of coat removed. iii) If at that place are 64 prompt coat/cm2 of wheel surface, picture the number of chips formed per social unit time. (10 marks)