74

MECHANICAL ENGINEERING 2013.14

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD llYear B.Tech. ME-l! Sem L T/P/D C

4

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4

(A40309) KTNEMATTCS OF MACHINERY UNIT

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I

Mechanisms: Erements or Links fluid link

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- crassification - Rigid Link, frexibre and Types of kinematics pairs -Types of constiined motion-kinetic

chain-. Mechanism-machine-Structure - inversions of mechanism

inversions

UNIT

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II

Kinematics:

or ld .in

of quadric cycle chain, single and double slider crank chains, Mechanical Advantage-Grubler's Criterion. Velocity and accereration

Determination of verocity and accereration of relative velocity method.

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Motion of link in machine

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Graphicar method -Apprication

Plane Motion of Body: rnstantaneous center of rotationcentrodes and axodes - Three centers in rine theorem Graphicar determinaiiln

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ot instantaneous center, determination of angurar veiocity of points and rinks by instantaneous cente method.

Kliens construction

- corioris

component of acceleration

accereration

- determination of corioris

mechanism.

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Analysis of Mechanisms: Anarysis of srider crank chain for dispracementvelocity and accereration of srider Accereration diagram

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roi

"-gir",

straight'Line Motion Mechanisms: Exact and approximate copied and peauceilier generated

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types - Hart - scott Russer -'Grasshopp"i Tchebicheffs and Robert Mechanism _ pantographs

steering Gears: conditions for correct steering

Ackerman's steering gear.

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Davis steering gear,

Hooke.'s Joint: singre and doubre Hooke's joint -verocity ratio problems.

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-w"tt

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apprication

UNIT- IV CAMS: Definitions of cam and folowers

- their uses - Types of folowers and cams - Terminorogy Types of forower motion Uniform verocitv, iimpre harmonic motion and uniform accereration and retardation. tvtaximum'vetocity and maximum accereration during outward and return strokes in the above 3 cases.

Analysis of Motion of Folrowers: Tangent cam with Rofler foilower - circurar arc cam with straight, concave and convex flanks.

MECHANICAL ENGINEERING 2013-1 4

UNIT _ V

- tyrys ..law of gearing' of motion - velocity of for transmission conOition for constant velocity ratio Higher Pair: Friction wheels and toothed gears sliding.

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worm geanng.

- Types - SimPle - compo n. Methods of finding train Selection of gear box - D automobile.

TEXT BOOKS:

2.

Theory of Machines and Mechanisms/JosEPH E. SHIGLEY/Oxford/ 3d Edition/lntemational Edition' Theory of Machines / Thomas Bevan/Pearson/3'd Edition'

REFERENCE BOOKS:

or

1.

,l.TheoryofMechanismandMachines/JagdishLal/MetropolitanBook

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ComPanY.

2.TheoryofMachines/S.S.Rattan/TataMcGrawHillPublishers.

3. 4. 5.

Kinematics & Dynamics Of machinery/NortonffMH' Theory of Machines / Sadhu Singh / Pearson' / New Mechanism and Machine Theory / JS Rao and RV Duggipati Age.

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6.TheoryofMachinesby/R.K.Bansal(LakshmiPublications).