CIIHATTISGARII SWAMI VIVEKANAND TECHNICALUNIVERSITY, BHILAI (C G)Semester: B.E. V Sem. Branch: Mechanical Engg.Subfect: Manufacturing Science - ll

UNIT.I

ForgingPrinciple, types, tools and fixture of forging, forging dies, forging machines, forging design, drop forging die design,upset forging die design, forging practice and process capabiliS, forging defects, lnspection and testing of forgedparts.

ExtrusionPrinciple, extrusion processes, process parameters, extrusion equipment, extrusion defects.

uNtT - il

RollingPrinciple, classification of rolled products, types of rolling, rolling mill train components, roll pass design forcontinuous mill.

DrawingWire drawing, tube drawing: Principle, setup, type, process capability.

uNrT - ilt

Press Working

Types of presses, selection of press, components of a simple press, press working operations - shear, bending,drawing etc., types of dies, die sets, considerations in die design, scrap strip layout.

Jigs & Fixtures

Degree of freedom, principles of location and clamping, locating, clamping and indexing devices, principles ofdesign, design of simple jigs and fixtures.

UNIT- IV

Grinding

Processes, machines, design consideration for grinding, specification of grinding wheel, process parameters,economics of grinding.

Gear Gutting

Principle of gear generations, principle motion and kinematic arrangement of gear shaping and gear hobbingmachines, gear cutting on milling machines.

UNIT-V

Unconventional MachiningAdvantages, application and limitation, survey of Non-conventional machining processes, mechanics of metalremoval, tooling, equipment, process parameters and surhce finish obtained & specific application of followingprocesses - EDM, ECM, USM, AJM, EBM and LBM.

Flow Turning

Principles, production of conical, cylindrical and parabolic shapes, spinability test, forces in power spinning,numerical problems.

Thread RollingPrinciple, advantages and disadvantages, types of thread rolling, numerical problems.

'frf-ff\../iwf:

,, {.1

CSVTUB. Tech. (Fifth Semester) Examination Nov-Ilec, ?009

Subject: Manufacturing Science -IIBRANCH: MECTIANICAL NN GINEER.ING

"i-ime: Three Hours

Note: I) Attempt all questions.2) All parts of each question should be answered together.

Code; n{ffi S9515

Max Marks: 80Min Marks: 28

(A) i) What are forging design consideration?

, ii) Explain drop forging, Press forging, and upset forging.(B) uExplain

Direct Forward ExtrusionIndirect or Backward Extrusion

(C) Describe characteristics and Defects of Forged part.

(A) Elaborate the Principle of Rolling operation.(B) Desciibe the method i:nd considerations slflssigning of rill pass.

(C) Explain the method of Tube drawing operation

(A) Explain Blanking and Piercing operation.(B) Define and differentiate the Jigs and Fixtures.(C) Describe 6-Point location principle ol JiSs & Fixture.

(A) Explain the f'ollowing of Grinding Wheeli) Glazing andii) Dressing

(B) Explain Extemal Center less Grinding operation.(C) Describe Gear I{obbing process.

III

I8

I

Write short Note on an;'fol.r:

(A) Electron Discharge machining

(B) Laser Beam machining

(C) Write the Principle of production of cylindrical shapes through flow turning.

(D) Forces in Power Spinning

(E) Thread rolling-Principle, advantages and disadvarrtages"

16

),:1tl o 6o \Y

CSVTU

Time: Three hours

Code: &{ru 08515

B" Tech,(nmn serneste$ Examination l{o',v-f}ec zsOgSubject: Manufacturing Scienc* -. trX

Branch : Mechanical Engineering

r Max iV{arks; B0

'rMin Pass Marlcs: 28

Note: Attempt all five questions. Each quesfion carribs equal marks.Illustrate the answers by means of neat diagrarhs.

Q.l Attempt enJt two parts:

(a) What ave various forging defects. Discuss their causes atlil

(ti) Discuss the advantages of forging as compared to machinby taking a suitable exarnple.

(c) 'What different processes are used in extrusion? E>radvantages and"their lirnitations.

Q.2 (a) Explain in brief the following (any.four,\:

(i) Tube Drarving

(ii) Continrlous Rolling Mill(iii) :-Fligtrr reversing Mill

'

(ir,) T'ypes of Rolling Mill Train

(u) Roli protection & Reconditioning

(vi) Longitudinal &, cross rolling.'l

Q.3 Atternpt arcy four of the foilowing: <,,,i;.i.r.i*,r: y_a.,,*

(i) Explain three clarnping devices. f- *-""

(ii) {Jse of Indexing on milling machine

(iii) Sirnple and compound die

(iu) Stripper plate and Bolster plate

(v) Blanking and piercing i.

(r,i) Angle bending and form bending

0s

08

08

4xA

PTO

,$x4

;s't

:

{

I

I

Attempt anyiwo,l

Explain the I nrincinle of gear generation and its application in gear

manufacturif. , 0g

Define grindihc. Differentiate between Internal and External grinding. 08

How a gindilig rvheel is manufactured? Describe its various .o*o*"no *otheir specific{tions.

Write strort nttes on any truo:

(i) S{innabilitr test

(ii) Pfduction of conical shape by spinning

(iii) Fl{t -die thread roliing machineI(iv) A{rasive Jet lvfachining. 6x2

Explain the.{asic principle_ of ttnead rolling. What are its advantages averconventionat

$uead cutting? G4

Iri

Q"4

(a)

Q.5 (a)

(b)

(c)

!g!