1. CAMELLIAINSTITUTEOF TECHNOLOGY& MANAGEMENT
DEPARTMENT OF MECHANICAL ENGINEERING
TOPIC-DESCRIPTION OF CAM & FOLLOWER
NAME :ANANTA KUMAR NANDI
ROLL NO.:25700722037
REG. NO.:222570120277 OF 2022-23
SUBJECT :KINEMATICS & THEORY OF MACHINES (PC-ME503)
YEAR :3RD
SEM :5TH
3. • A Cam is a rotating
element which
transfers its rotary
motion into
reciprocating motion
or oscillating motion
to another element
known as Follower.[1]
4. EXAMPLES FOR CAM
.In IC engines to operate the inlet and exhaust valves.
5. CLASSIFICATION OF CAM MECHANISM
Based on modes of Input / Output motion
Rotating cam – Translating follower
Rotating cam – Oscillating follower
Translating cam – Translating follower
10. • In radial cam
the follower
reciprocates
or oscillates
in a direction
perpendicular
to the cam
axis.[1]
11. In cylindrical cam the
follower reciprocates
direction parallel
or oscillates in the
to
the cam axis .
12. WHAT IS FOLLOWER?
A follower is a translating or
oscillating mechanical member
that follows the motion of the
cam. It can touch the surface
profile of the cam or can be
spring-loaded. It can have a
uniform velocity or can have
uniform acceleration motion.
Complicated output motion can
be achieved with the help of
the follower motion.[3]
13. A) According to the surface in contact :
- Knife edge follower
- Roller follower
- Flat faced follower
- Spherical follower
B) According to the motion of the follower :
- Reciprocating follower
- Rotating follower
C) According to the path of the motion of follower :
- Radial follower
- Offset follower
14. Knife edge follower :
When contacting end of
the follower has a sharp
knife edge, it is called
as a knife edge follower.
Roller follower :
When the connecting end
of the follower is a roller,
it is known as a roller
follower. [2]
15. Flat faced follower :
When the contacting
surface of the follower is
perfectly flat, it is known
as flat faced follower. [2]
Spherical follower :
When the contacting
surface of the follower is
un spherical shape, it is
known as a spherical
follower. [2]
16. Reciprocating follower :
When the follower
reciprocates in guides as the
cams rotates uniformly, it is
known as reciprocating
follower . [2]
Oscillating follower :
When
motion
the uniform rotary
of the cam is
into the
converted
predetermined oscillatory
motion of the follower, it is
known as oscillating follower .
17. Radial follower :
When the motion of the
follower is along the axis
passing through the cam
axis, it is known as a radial
follower . [2]
Off – set follower :
When the motion of the
follower is along an axis
away from the axis of cam
center, it is known as a off-
set follower .
19. Cam profile :
It is the outer surface
of the disc cam.
Base circle :
It is the shortest
radius from the cam
center to any part of
the cam profile. [1]
Pitch curve :
trace point
generated by
as
It is the path
the
the
follower is rotated by
a stationary cam. [2]
20. Prime circle :
It is the smallest circle from
the cam center through the
pitch curve.
Pressure angle :
It is the angle between the
direction of follower and
perpendicular to pitch
circle. [1]
Pitch point :
It corresponds the point of
maximum pressure angle.
[2]
21. Pitch circle :
It is the circle drawn from
the cam center and
passes through the pitch
point. [2]
Stroke :
It is the greatest diameter
or angle to which the
follower moves or rotates.
22. CONCLUSION
It is a simple mechanism that converts rotary motion
to reciprocating motion. With proper design, any
desired motion of the follower can be achieved. This
set-up can bear high vibrations. They are
accurate and versatile.
23. REFERENCES
1. THEORY OF MACHINES R.S. Khurmi & J.K. Gupta
S. Chand publication 2015 edition
2. KINEMATICS OF MACHINES F. Sayad Techmax
publication 2015 edition
3. https://themechanicalengineering.com/cam-and-
follower/
