Gear has an old history and its been in use since the ancient
time. It can easily be identified by the shape such as involute gear, cycloidal
gear. Gear can be classified as a rotating machine which has teeth cut around
cylindrical or cone surfaced and had equal spacing. Shaft position also helps
in the classification of Gear such as shaft gears and non-intersecting shaft
gear. Gear and Shafts are a
significant part of the transmission. Both have different types which have
specific working. A shaft is a machine which usually rotates in the circular
motion. Pulley and gear are fixed on the shaft for its working.
Types of gears and shafts
Screw gear is
the pair of helical hands with an angle of 45 degrees on non-intersecting,
non-parallel shafts . The lubricant is important in this gear as power is
produced by sliding of the tooth surface.
The internal gear
is used in shaft coupling and gear drives. The external gear is paired with
internal gear which has teeth cut on surfaces which can be cylindrical or cone.
Teeth limitation is there to prevent the additional interfaces and problems.
Bevel gear has
a surface which is like cone shaped.Pitch surface is like cone and teeth are
cut along it. This gear is used to transmit force between two different shafts.
Spur Gear is
a cylindrical gear and belongs to the category of parallel shaft gear. It is
one of the most commonly used because of its accuracy and easy production.
Transmission shafts
and Machine shafts are the two types
in which shaft is classified. The countershaft is the example of transmission
which is used for power transmission between source and machine that absorbs
power whereas crankshaft comes into machine shafts.
Gear and Shafts are
related to each other in working, and both are required for transmission and
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