its on universal joints.

1. VENUS INTERNATIONAL
COLLEGE OF TECHNOLOGY.
M.E -3 A (2014).
Universal Joints

2. What is a Universal Joint? What is it’s purpose?
 A universal joint is a joint or coupling in a rigid rod
that allows the rod to 'bend' in any direction
 The purpose of a universal joint is to transfer torque
from one plane to another, retaining whatever
rotational energy applied to the shaft

3. Universal Joints
 The universal joint has been around since ancient
Greek times, but the person first credited with using
it for the transfer of drive was Gerolamo Cardano, an
Italian mathematician circa 1545
 Since then it has been adapted to many forms, and it
played a major role in the industrial revolution.
Modern adaptations include the use of needle roller
bearings and lightweight alloys instead of bushings
and cast iron but the principle remains the same

4. Types
 Normal universal joints
 Double universal joints

5. Design/structure
 A universal joint uses basic mechanical principles,
there are four points of attachment (usually with
needle bearings), two per shaft
 Each of these shaft ends (called yoke arms or yoke
ends) attaches to a cross piece, providing a flexible
joint which can take large loads

6. Features and functions
 As mentioned earlier the whole concept of a
universal joint is to provide a mechanical means for
transmitting torque and rotation
 The Universal joint only suffers from one major
problem: even when the input drive shaft axle
rotates at a constant speed, the output drive shaft
axle rotates at a varying speed

7. Materials Used
 Universal joints can be made out of almost any
material depending on the application
 Steel, cast iron, brass or even plastic
 Cost can effect the materials

8. Applications
 There are thousands of applications for universal
joints
 Single or double universal joints may be used
depending on the appliction
 Double universal joints should be used where the
velocity of the rotating shaft should remain the same

9. Installation & Maintenance
 The installation of a universal joint is quite simple
but it requires a high level of fabrication skills and a
well equipped engineering shop. Usually a universal
joint is selected from a catalogue that meets the
users requirements, or one is specially designed and
built
 Universal joints are very long lived components
provided they are not exposed to shock loads such as
dumping the clutch in a vehicle equipped with a
manual transmission or are used in applications
where extreme angles are involved

10. Conclusion
 Universal and double universal joints play a crucial
role in modern society
 Broad range of applications
 Cost effective compared to other solutions
 Very basic to maintain
 Allows a drive system to successfully operate without
all the components being linear

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