The document provides an overview of the Theory of Machines course. It is divided into three parts: kinematics of machines deals with motion only, dynamics of machines deals with both motion and forces. The study of TOM is important for understanding how machines work, designing machines, and synthesizing mechanisms. It requires knowledge of vectors, displacement, velocity, acceleration, and basic mechanics. The course modules will cover topics like mechanisms, inversions, cams, power transmission devices, flywheels, governors, and references. The goal is for students to understand machine motion and design, calculate kinematic effects, and synthesize mechanisms.

1. THEORY OF MACHINES
(DME 5201)
UNIVERSITY POLYTECHNIC
GLA UNIVERSITY,
MATHURA
LECTURE ZERO

2. What is Theory of Machines?
• The subject Theory of Machines may be defined as
that branch of Engineering-science, which deals with
the study of relative motion between the various
parts of a machine, and forces which act on them.
• The knowledge of this subject is very essential for an
engineer in designing the various parts of a machine.
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3. TOM is subdevided into two parts-
1. Kinematics of Machines- Deals with only
motion.
2. Dymamics of Machines- Deals with motion
as well as forces and their effects.
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4. Why to study TOM?
• To have knowledge about how machines work.
• It helps in designing of machines.
• Its helps in synthesis of mechanisms.
• It reduces hit and trial tactics.
• It gives you better understanding of the machines and their
working.
• It helpd knowing the effect of force on each element of
machines.
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5. Prerequisite for the Subject
You should have the knowledge of following items before
starting this subject:
1. Vectors
2.Concepts of displacement, velocity and acceleration
3. Basic mechanics.
4. And some part of engineering graphics.
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6. MODULE -1 : Contents
Review and Basics
Definition of statics, kinetics, kinematics and dynamics, Rigid body
and resistant body
Mechanism &
Machines
Links , Kinematics pairs and their types, Kinematics pairs- types;
Degree of freedom, Kinematics chain and their types, Constrained
motion and mechanisms
Inversion OF
Mechanisms
Classification of mechanisms ; Equivalent mechanism, Laws of
inversion of mechanisms, Single slider crank chain and its
inversions, Quick return mechanism, pantograph
Clutches
Introduction of clutches and its working principle, Single plate
Clutch, Multi-plate clutch, Cone clutches
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7. MODULE -2 : Contents
Cams & Cam
Follower
Mechanism
Definition of cam , Classification of cams-followers, Dispacement
Diagram for knife edge and roller follower having uniform velocity
and SHM
Power
Transmission
Devices
Introduction ,Belt and rope drives, Open and crossed belt drives,
actions of belt on pulleys, velocity ratio, Slip in belts & ropes, Types
of V Belt and Flat belt, Laws of belting and length of belt (open &
cross belt)
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8. MODULE -3 : Contents
Flywheel
Functions of fly wheel & types, Kinetic Energy of rotating masses,
Turning moment diagram, Co-efficient of energy & speed, Simple
numerical problems.
Governors
Functions of governor; comparison between a fly wheel and
governor, Types of governor, Watt governor (Principle, construction
and working), Watt governor-Numericals, Porter governor
(Principle, construction and working), Porter governor-Numericals,
Terminology used in Governors: Height, equilibrium speed, Hunting,
isochronism, stability, sensitiveness, Terminology used in Governors:
Height, equilibrium speed, Hunting, isochronism, stability,
sensitiveness.
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9. Reference Books
• Theory of Machines by R.S. Khurmi
• Theory of Machines by S.S. Rattan
• Mechanisms and Mechanical Devices by Neil
Sclater
• Machines and Mechanisms by David H. Myszka
(Illustrative examples-Good for beginners)
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10. Outcomes of Subject ‘TOM’
After you finish the entire syllabus you will be able to-
• See the machines and mechanisms from a new angle.
• Understand how machines work.
• Design or modify a new mechanism.
• Calulate how motion changes the mechanisms.
• Synthesise the mechanisms.
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GLA UNIVERSITY, MATHIURA
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11. Thank You!!!
Will meet in next session.
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UNIVERSITY, MATHIURA
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