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The characteristics and functions of the bevel gear
-2019-05-24 10:40:16-

The bevel gear is one of the gears that is widely used in various industrial equipments. Let's introduce it below.

Bevel gears are bevel gears, bevel gears. Bevel gears are most commonly used as transmissions for two vertical axes, but are also suitable for two-axis transmissions at other angles. The most typical application is to drive a vertical pump with a horizontal drive. The two main differences between bevel gears and spur gears are their shape and their relationship to the axis. The bevel gear is conical in shape, and the spur gear is originally a cylinder. The bevel gear transmits two angled axes, ie the movement between the intersecting axes, while the spur gear transmits the movement between the two parallel axes.

Bevel gear features

Bevel gears are mainly used to realize the movement and power transmission between two intersecting axes. The two-axis intersection angle is called the shaft angle. The value of ∑ can be determined according to the needs of the transmission. Usually, 90 degrees is used, that is, vertical intersecting. The teeth of the bevel gear are arranged on the truncated cone. Therefore, the expression corresponding to each "cylinder" in the spur gear becomes a "cone", such as an indexing cone, a pitch cone, a base cone, a tip cone, etc. This is also the origin of the name of the bevel gear.

Main features and functions of the bevel gear

There are many mechanical transmission methods used in various machines, the most important ones are belt drive, chain drive, friction wheel drive, gear drive and crowbar nut drive.

Gear transmission, in general, enables one shaft to rotate while the other shaft rotates; or to change the rotational motion of one shaft into a linear motion.

Its main features are: a tight mesh with each other, the transmitted torque is much larger than the belt and chain drive; its transmission efficiency is higher than other mechanical transmission; and can be a large transmission force Keep the speed ratio between the two axes unchanged. There are many types of gears, which are generally classified into cylindrical gears, bevel gears and worm gears depending on the shape of the tooth surface. The commonly used spur gears and helical gears are cylindrical gears, which are used to drive the rotational movement of two mutually parallel shafts, and the bevel gears (cone gears) are used for the rotational movement of the two axes of the transmission. When the teeth of a pair of bevel gears mesh with the transmission, the situation is similar to that of the two semi-conical friction wheels. However, in the transmission of the friction wheel, if the force driven on the driven shaft is greater than the friction between the two wheels, the two wheels will slip, or even a driven wheel cannot be driven. If the friction wheel is made into a toothed wheel, and the tooth on the gear is used to transmit the tooth on the other axis, the rotational force of the shaft can be transmitted to the other axis. The meshing drive of the bevel gear is based on this.

The use of the bevel gear is very wide, especially when the two axes intersect, the distance between the two axes is very close, the power of the transmission is large, and the rotation ratio is fixed. The bevel gear is most suitable.



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