Why is backlash required between meshing gears

why is backlash required between meshing gears.Engagement refers to a transmission relationship between two mechanical parts, called an engagement drive. Gear transmission is the most typical meshing transmission and is the most widely used form of transmission. why is backlash required between meshing gears.According to the different transmission principle, there are spur gear meshing transmission and helical gear meshing transmission.


Gear meshing transmission has the characteristics of large adaptability range, high transmission efficiency, long working life, stable transmission, high reliability, constant instantaneous transmission ratio, and can realize various position requirements. It is used in modern mechanical transmission. Very extensive. why is backlash required between meshing gears.It consists of a drive gear, a driven gear and a frame. Through the meshing action of the gears, the movement and power of the driving wheel (shaft) are transmitted to the driven (shaft), and the required rotational speed and torque are obtained.

why is backlash required between meshing gears
(1) Advantages: It can adapt to a wide range of speed and power transmission. Its peripheral speed can be from very low to as high as 300m / s; high transmission efficiency, long working life, smooth transmission, high reliability; can ensure a constant instantaneous transmission ratio;why is backlash required between meshing gears, can achieve two-axis transmission of various position requirements.
(2) Disadvantages: The two wheels must be in contact, so it is not suitable for transmissions with large distance between shafts; the precision for manufacturing and installation is high, otherwise large noise will be generated.

why is backlash required between meshing gears

There are many types of gear meshing drives depending on the classification method.
According to whether the angular velocity of a pair of gear meshing transmission is constant,why is backlash required between meshing gears, it can be divided into a non-circular gear meshing transmission and a circular gear meshing transmission.
According to the shape of the teeth, it can be divided into involute gear meshing transmission, arc gear meshing transmission, cycloid gear meshing transmission and so on.why is backlash required between meshing gears.
According to the shape of the tooth, it can be divided into a straight tooth meshing transmission, a helical tooth meshing transmission, and a curved tooth meshing transmission.
According to the hardness of the tooth surface, it can be divided into a soft tooth surface gear (<350HBS) meshing transmission and a hard tooth surface gear (>350HBS) meshing transmission.

why is backlash required between meshing gears.According to the different working conditions of the gear, it can be divided into open gear meshing drive and closed gear meshing drive. why is backlash required between meshing gears.The former does not have a closed gear box, the teeth are exposed, it is easy to receive dust, and the lubrication conditions are also poor; the latter has a closed gear box.

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