Book Details

Kinematics of Machinery

Kinematics of Machinery

Published by uLektz

Course Code:RT22031

Author:uLektz

University: JNTU Kakinada

Regulation:2013

Categories:Mechanical

Format : ico_bookePUB3 (DRM Protected)

Type :eBook

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Description :Kinematics of Machinery

Note : No printed book. Only ebook. Access eBook using uLektz apps for Android, iOS and Windows Desktop PC.

Topics
UNIT – I MECHANISMS

1.1 Elements or Links – Classification – Rigid Link, flexible and fluid link

1.2 Types of kinematic pairs – sliding, turning, rolling, screw and spherical pairs – lower and higher pairs – closed and open pairs

1.3 Constrained motion – completely, partially or successfully constrained and incompletely constrained

1.4 Gruibler’s criteria , Grashoff’s law , Degrees of freedom, Kutzbach criterian for planar mechanisms

1.5 Mechanism and machines – classification of machines – kinematic chain – inversion of mechanism – inversion of mechanism – inversions of quadric cycle

1.6 Chain – Single and double slider crank chains.

UNIT – II LOWER PAIR MECHANISM

2.1 Exact and approximate copiers and generated types – Peaucellier, Hart and Scott Russul – Grasshopper – Watt T.

2.2 Chebicheff and Robert Mechanisms and straight line motion, Pantograph.

2.3 Conditions for correct steering – Davis Steering gear, Ackermans steering gear – velocity ratio

2.4 Hooke’s Joint: Single and double – Universal coupling–application–problems

UNIT – III KINEMATICS AND PLANE MOTION OF BODY

3.1 KINEMATICS: Velocity and acceleration – Motion of a link in machine

3.2 Determination of Velocity and acceleration diagrams

3.3 Velocity and acceleration analysis of for a given mechanism, Kleins construction, Coriolis acceleration, determination of Coriolis component of acceleration.

3.4 Plane motion of body: Instantaneous center of rotation, centroids and axodes

3.5 Relative motion between two bodies – Three centres in line theorem – Graphical determination of instantaneous centre

3.6 Diagrams for simple mechanisms and determination of angular velocity of points and links.

UNIT – IV CAMS

4.1 CAMS : Definitions of cam and followers – their uses, Types of followers and cams – Terminology

4.2 Types of follower motion: Uniform velocity, Simple harmonic motion and uniform acceleration and retardation.

4.3 Maximum velocity and maximum acceleration during outward and return strokes in the above 3 cases.

4.4 Analysis of motion of followers: Roller follower – circular cam with straight, concave and convex flanks

UNIT – V Gears

5.1 Gears: Higher pairs, friction wheels and toothed gears–types

5.2 Law of gearing, condition for constant velocity ratio for transmission of motion

5.3 Form of teeth: cycloidal and involute profiles

5.4 Methods of interference. Condition for minimum number of teeth to avoid interference, expressions for arc of contact and path of contact

5.5 Introduction to Helical, Bevel and worm gearing

UNIT – VI Power Transmissions

6.1 Power Transmissions : Introduction, Belt and rope drives, selection of belt drive

6.2 Types of belt drives,V-belts, materials used for belt and rope drives

6.3 Velocity ratio of belt drives, slip of belt, creep of belt, tensions for flat belt drive, angle of contact, centrifugal tension, maximum tension of belt,

6.4 Chains- length, angular speed ratio, classification of chains

6.5 Introduction to gear Trains, Train value

6.6 Types – Simple and reverted wheel train

6.7 Epicyclic gear Train. Methods of finding train value or velocity ratio – Epicyclic gear trains.

6.8 Selection of gear box-Differential gear for an automobile.

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