KOM syllabus and lesson plan

1. ACADEMIC YEAR:2020-2021 SEMESTER: II
After completion of course the student should be able to:
1. Understand the fundamentals of mechanisms, Inversions and Ability to calculate
mobility
2. Analyze the velocity and accelerations of a given mechanism by graphical and
analytical methods.
3. Construct the cam profiles at various follower motions
4. Determine the velocity ratio of gears, gear trains,belts and chain drives

2. ACADEMIC YEAR:2020-21 SEMESTER: II
SYLLABUS
MECHANISMS : Elements or Links – Classification – Rigid Link, flexible and fluid link – Types of kinematic
pairs – sliding, turning, rolling, screw and spherical pairs – lower and higher pairs – closed and open pairs –
constrained motion – completely, partially or successfully constrained and incompletely constrained . Grublers
criterion , Grashoff’s law , Degrees of freedom, Kutzbach criterion for planar mechanisms, Mechanism and
machines – classification of machines – kinematic chain – inversion of mechanism – inversion of mechanism –
inversions of quadric cycle, chain – single and double slider crank chains.
LOWER PAIR MECHANISM: Exact and approximate copiers and generated types – Peaucellier, Hart and Scott
Russel – Grasshopper – Watt T. Chebicheff and Robert Mechanisms and straight line motion, Pantograph.
Conditions for correct steering – Davis Steering gear, Ackermans steering gear – velocity ratio; Hooke’s Joint:
Single and double – Universal coupling–application–problems.
KINEMATICS: Velocity and acceleration – Motion of a link in machine – Determination of Velocity and
acceleration diagrams – Graphical method – Application of relative velocity method four bar chain. Velocity and
acceleration analysis of for a given mechanism, Kleins construction, Coriolis acceleration, determination of
Coriolis component of acceleration. Plane motion of body: Instantaneous centre ofrotation, centroids and axodes
– relative motion between two bodies – Three centres in line theorem – Graphical determination of instantaneous
centre, diagrams for simple mechanisms and determination of angular velocity of points and links..
CAMS Definitions of cam and followers – their uses – Types of followers and cams – Terminology –Types of
follower motion: Uniform velocity, Simple harmonic motion and uniform acceleration and retardation. Maximum
velocity and maximum acceleration during outward and return strokes in the above 3 cases. Analysis of motion
of followers: Roller follower – circular cam with straight, concave and convexflanks.
GEARS Higher pairs, friction wheels and toothed gears–types – law of gearing, condition for constant velocity
ratio for transmission of motion, Form of teeth: cycloidal and involute profiles. Velocity of sliding – phenomena
of interferences – Methods of interference. Condition for minimum number of teeth to avoid interference,
expressions for arc of contact and path of contact – Introduction to Helical, Bevel and worm gearing..
Power Transmissions : Introduction,Belt and rope drives, selection of belt drive- types of belt drives,V-belts,
materials used for belt and rope drives, 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, Chains - length, angular speed ratio,
classification of chains. Introduction to gear Trains, Train value, Types – Simple and reverted wheel train –
Epicyclic gear Train. Methods offinding train value or velocity ratio – Epicyclic gear trains. Selection of gear
box-Differential gear for an automobile.
Text Books:
1. Mechanism and Machine Theory by Ashok G. Ambekar, PHI Publishers
2. Theory of Machines – S. S Rattan- TMH
3. Theory of machines and Mechanisms – J.J Uicker, G.R.Pennock&J.E.Shigley – Oxford
4. Theory of Machines – R.S.Khurmi

3. ACADEMIC YEAR:2020-21 SEMESTER: II
LESSON PLAN
Sl.No
No.Of
Periods
Topics
Teaching aids
used
LCD/OHP/BB
Textbook/
Reference
page
UNIT-1
1. 1
Introduction to Mechanism and Machines
BB T4:
94-95Page
2. 1 Mechanism and Machine, Rigid and Resistant
bodies , link
BB T4:
96-97 Page
3. 1
Kinematic pair, Degrees of freedom
BB T4:
98-104 Page
1. 1
Classification of Kinematic pair
BB T4:
105-107 Page
2.
1 Kinematic pair , Kinematic chain, linkage BB
T4:
107-113 Page
3. 1 Mechanism and structure, Mobility of
Mechanisms
BB T4:
113-115 Page
4. 1
Four-bar chain mechanism and its inversions
BB T4:
119- Page
5. 1
Inversions of 4- bar slider crank chain
BB T4-26 Page
6. 1 Inversions of slider crank chain
BB T4-29 Page
7. 1
Double slider crank chain and its inversions
BB T4-32 Page
8. 1
Mechanical advantage, Transmission angle
BB T4-40 Page
12. 1 Miscellaneous Mechanism and problems BB
UNIT-2
13. 1
Introduction to lower pairs, pantograph
BB T4-57Page
14. 1
Exact Straight line mechanisms
BB T4-63Page
15. 1 Approximate Straight line mechanisms BB T4- 73Page
16. 1 T.Chebicheff mechanism BB T4-74 Page
17. 1 Robert’s mechanism BB T4-86Page
18. 1
Engine indicators
BB T4:
232-233Page
19. 1
Automobile steering gears
BB T4:
233-238 Page

4. 20. 1
Ackkermanns steering gear mechanism
BB T4:
238-242 Page
21. 1
Types of Hookes joint, Universal Hookes joint
BB T4:
242-246 Page
22. 1
Double Hookes joint and problems
BB T4:
246-255 Page
UNIT-3
23. 1 Introduction on Velocity Analysis, BB T3:
239-246Page
24. 1 Instantaneous method BB T4:
269-297Page
25. 1 Graphical method BB T4:
297-320Page
26. 1 Four link mechanisms ,Problems BB T3:
273-276 Page
27. 1 velocity images ,Angular velocity of links BB T3:
276-285 Page
28. 1 Problems BB T4605Page
29. 1 Velocity of rubbing, slider- crank mechanism,
Crank and slotted lever mechanism&Problems
BB T4611Page
30. 1 Klein’s construction method BB T4-612Page
31. 1 Problems BB T4-619Page
32 1 Tutorial
UNIT-4
33. 1
Classification of followers and cams(Cams) BB
T4-774 Page
34. 1
Motions of the follower of cam BB
T4-777 Page
35. 1
Uniform velocity BB
T4-778 Page
36. 1
Simple Harmonic Motion BB
T4-779 Page
37. 1
Uniform acceleration &retardation BB
T4-780Page
38 1 construction of cam profiles by using follower
motion BB
T4-784Page
39 1 problems of cam profiles by using follower
motion BB
T4-787Page
40 1
Tangent cam with roller follower PPT
T4-808Page
41 1
Circular arc cam with flat faced follower PPT
T4-818Page
42 1
problems on tangent & circular arc cams BB
T4-813Page
UNIT-5
43 1
Classification of toothed wheels, gear terms PPT
T4-382Page
44 1
Law of gearing
PPT T4- 388Page
45 1
Velocity of sliding of teeth,forms of teeth
PPT T4- 390Page
46 1
Length of contact,arc of contact
PPT T4-395 Page
47 1
problems on involute gears
PPT T4-397Page

5. 48 1
interference in involute gears
PPT T4-405 Page
49 1 minimum number of teeth required on pinion to
avoid interference
PPT T4- 408Page
50 1
Methods of avoiding interference
PPT T4-409 Page
51 1
Tutorial problem on Gears
PPT T4-425Page
52 1
Spiral gears- Efficiency of spiral gears
PPT T4-418 Page
53 1
Types of gear trains (Gear trains)
PPT T4-428Page
54
Simple, compound, reverted gear trains
PPT T4-429Page
55 1 epicyclic gear train Tabular method,Algebraic
method
PPT T4-436Page
56 1
problems on epicyclic gear trains
PPT T4-439 Page
57 1
Torques and tooth loads in epicyclic gear trains.
PPT T4- 440Page
58 1
Sun &planet gear train
PPT T4-442 Page
59 1
Epicyclic gear train with bevel gears
PPT T4-457 Page
UNIT-6
60 1
Types of belt drives
PPT T2-331Page
61 velocity ratio of belt drives, slip of belt, creep
of belt
PPT T2-332Page
62 1 tensions for flat belt drive, angle of contact,
centrifugal tension
PPT T2-331Page
63 1
maximum tension of belt
PPT T2-356Page
64 1 Chains- length, angular speed ratio,
classification of chains
PPT T2-362Page
65 1
Problems BB
T2-365Page