The document discusses different types of steering gears used in vehicles. It focuses on the worm and wheel steering gear. It describes how the worm and wheel steering gear system works, with a worm keyed to the steering shaft that meshes with a worm wheel mounted in bearings in a cast iron case. The worm wheel is connected to steering linkages to convert the rotary motion of the steering wheel into linear motion of the front wheels. Worm gears can increase torque or reduce speed while providing a smooth and quiet operation. However, they also have high power losses and generate heat.

2.  The steering gear is a device for converting the rotary
motion of the steering line motion of the linkages with a
mechanical advantages.
 If the steering wheel is connected directly to the
steering linkages it would required a effort to move the
front wheel
 A higher steering ratio means that you have to turn the
steering wheel more to get the wheels turning ,but it will
be easier to turn the steering wheel.

4.  Worm and wheel steering gear
 Worm and sector steering gear
 Cam and lever / peg steering gear
 Recirculating ball steering gear
 Rack and pinion steering gear

6.  The system consists of worm wheel which is carried in bearings in
a cast iron case . The case is made in halves . The outer end of the
worm wheel is fixed to a drop arm which is having ball end to
connect the side rod is connected to the steering arm which is
fixed to the stub axles . The worm which is keyed on to a steering
shaft have a mesh with the worm wheel . The steering wheel is
mounted at the upper end of the steering shaft.

7.  Worm gears can be used to either greatly
increase torque or greatly reduced speed.
 They are also the smoothest and quietest of
the gear systems .
 It has the good meshing effectiveness.
 They occupy less space as compared to
other gears
 They are self-locking.

8.  Worm gear materials are expensive.
 Worm drives have high power losses and
low transmission efficiency.
 They produce a lot of heat

11.  Gate control mechanisms
 Hoisting machines
 Automobile steering mechanisms
 Lifts
 Conveyors
 presses

12.  EDX, COUSERA, LINKEDIN LEARNING
 MECH WORLD
 GOOGLE
 WIKIPEDIA

13. PPT PRESENTED
BY
166R5A0304(BASURI NIKHIL)
156R1A0307(ADITYA)