cam-follower mechanism

2.  A cam is a rotating element that
gives oscillating or reciprocating
motion to the follower which is
another element of this machine
by direct contact.
 This part is mainly used to
transform the motion from
rotary into linear and vice-versa.

3.  Disk or Plate cam
 Cylindrical cam
 Translating cam
 Wedge cam
 Spiral cam
 Heart-shaped cam
 Spherical Cam

4.  A disk or plate cam is a mechanical
component used in various machines
to convert rotational motion into linear
motion.
 It is essentially a circular plate with an
off-center groove cut into its surface,
which is connected to a sliding
follower.
 As the cam rotates, the follower moves
in and out of the groove, causing linear
motion in a connected component.

5.  A cylindrical cam is a
mechanical component used in
machinery to convert rotary
motion into linear motion or
vice versa.
 It is a type of cam in which the
cam surface is a cylinder.
 Cylindrical cams are commonly
used in engines, textile
machinery, and other industrial
equipment.

6.  This mechanism involves the use of
a cam, which is a rotating
component that has an irregular
shape, and a follower, which is a
component that moves along the
surface of the cam.
 The Translating Cam is made out of
a groove or contour plate with an
oscillating follower in front of it. The
movement of the follower is
specified by the groove or contour
plate.

7.  The wedge cam has a translation
motion, which has a shape of
wedge, but the follower that
paired with Wedge Cam can
oscillate or translate.

8.  A Spiral Cam is one of the
types of cams, mostly used
in computer applications.
 These spiral
grooves contain teeth that
make contact with a pin
gear follower.

9.  The Heart-Shaped Cam appears to be asymmetrical. It is
mostly used to turn a shaft in order to retain a cam in a
predetermined position by applying pressure from a roller.

10.  Spherical Cam is another main types of cams mechanism
which provide less back-lash and less friction loss.

12.  A follower is a rotating or an oscillating element of a
machine that follows the motion of cam by direct contact.

13.  Knife edge follower
 Roller follower
 Flat-faced follower
 Spherical follower
 Offset Follower
 Radial Follower

14.  Trace Point
 Base Circle
 Pitch Curve
 Prime Circle
 Cam Profile
 Pressure Angle
 Pitch Point
 Pitch Circle

15. Base Circle-
 Base circle is the smallest
circle that can be drawn
tangentially to cam
profile with center at cam
profile. The size of cam is
descided by the BASE
CIRCLE.

16. Trace Point:
 It is theoretical point
on the follower.It is
different for different
type of follower. For ex.
Trace point of knife
edge follower is at the
point of contact of
follower and cam. In
case of roller follower it
is at the center of roller.

17. Pitch Curve:
 In order to draw pitch
curve we use the
principal of inversion.
Now for drawing pitch
curve hold the cam fixed
and rotate the follower
then the curve obtained
passing through the
locus of trace point is
called pitch curve.

18. Pressure Angle:
 In order to determine the
pressure angle. Consider any
point on the pitch curve note
the direction of follower at
that point also draw a tangent
to pitch curve passing through
that point. Now draw a
prpendicular line passing
through that point. Therefore
the angle formed between the
followe movement and normal
to pitch curve is
called pressure angle.
 Pressure angle varies from
point to point.And attain
maximum and minimum
value.

19. Pitch point:
 It is point corresponding
to maximum pressure
angle.
Pitch circle:
 Pitch circle is circle drawn
taking center as center of
base circle and its radius
is equal to the distance
between the pitch point
and base circle center.