28-04-2014, 12:00 PM
CLUTCH
CLUTCH.pdf (Size: 482.98 KB / Downloads: 170)
Clutch Introduction
A Clutch is ia machine member used to connect the driving shaft to a driven
shaft, so that the driven shaft may be started or stopped at will, without stopping
the driving shaft. A clutch thus provides an interruptible connection between two
rotating shafts
Clutches allow a high inertia load to be stated with a small power.
A popularly known application of clutch is in automotive vehicles where it is used
to connect the engine and the gear box. Here the clutch enables to crank and
start the engine disengaging the transmission Disengage the transmission and
change the gear to alter the torque on the wheels.
FRICTION CLUTCHES
As in brakes a wide range of clutches are in use wherein they vary in their are in
use their working principle as well the method of actuation and application of
normal forces. The discussion here will be limited to mechanical type friction
clutches or more specifically to the plate or disc clutches also known as axial
clutches
Frictional Contact axial or Disc Clutches
An axial clutch is one in which the mating frictional members are moved in a
direction parallel to the shaft. A typical clutch is illustrated in the figure below. It
consist of a driving disc connected to the drive shaft and a driven disc
co9nnected to the driven shaft.
members.
A friction plate is attached to one of the
Actuating spring keeps both the members in contact and
power/motion is transmitted from one member to the other. When the power of
motion is to be interrupted the driven disc is moved axially creating a gap
between the members as shown in the figure.
Single Clutch and Multiple Disk Clutch
Basically, the clutch needs three parts. These are the engine flywheel, a friction
disc called the clutch plate and a pressure plate. When the engine is running
and the flywheel is rotating, the pressure plate also rotates as the pressure plate
is attached to the flywheel. The friction disc is located between the two.
Clutch Construction
Two basic types of clutch are the coil-spring clutch and the diaphragm-spring
clutch. The difference between them is in the type of spring used. The coil
spring clutch shown in left Fig 3.2.6 uses coil springs as pressure springs (only
two pressure spring is shown). The clutch shown in right figure 3.2.6 uses a
diaphragm spring.
CLUTCH.pdf (Size: 482.98 KB / Downloads: 170)
Clutch Introduction
A Clutch is ia machine member used to connect the driving shaft to a driven
shaft, so that the driven shaft may be started or stopped at will, without stopping
the driving shaft. A clutch thus provides an interruptible connection between two
rotating shafts
Clutches allow a high inertia load to be stated with a small power.
A popularly known application of clutch is in automotive vehicles where it is used
to connect the engine and the gear box. Here the clutch enables to crank and
start the engine disengaging the transmission Disengage the transmission and
change the gear to alter the torque on the wheels.
FRICTION CLUTCHES
As in brakes a wide range of clutches are in use wherein they vary in their are in
use their working principle as well the method of actuation and application of
normal forces. The discussion here will be limited to mechanical type friction
clutches or more specifically to the plate or disc clutches also known as axial
clutches
Frictional Contact axial or Disc Clutches
An axial clutch is one in which the mating frictional members are moved in a
direction parallel to the shaft. A typical clutch is illustrated in the figure below. It
consist of a driving disc connected to the drive shaft and a driven disc
co9nnected to the driven shaft.
members.
A friction plate is attached to one of the
Actuating spring keeps both the members in contact and
power/motion is transmitted from one member to the other. When the power of
motion is to be interrupted the driven disc is moved axially creating a gap
between the members as shown in the figure.
Single Clutch and Multiple Disk Clutch
Basically, the clutch needs three parts. These are the engine flywheel, a friction
disc called the clutch plate and a pressure plate. When the engine is running
and the flywheel is rotating, the pressure plate also rotates as the pressure plate
is attached to the flywheel. The friction disc is located between the two.
Clutch Construction
Two basic types of clutch are the coil-spring clutch and the diaphragm-spring
clutch. The difference between them is in the type of spring used. The coil
spring clutch shown in left Fig 3.2.6 uses coil springs as pressure springs (only
two pressure spring is shown). The clutch shown in right figure 3.2.6 uses a
diaphragm spring.