(A) of the gear drive

1, gear transmission classification:

(1) Classification according to: According to the automatic axis and driven axis in the space relative position of the plane and space classification Two parallel shaft between the transmission - plane gear drive (spur gear, helical gear drive, Word gear transmission; rack and pinion drive)

Drive-space gear drive (bevel gear drive, helical gear drive (interlaced shaft)) between two intersecting axes or interlaced shafts

For the transmission of space two vertical axis of the movement - worm gear drive.

(2) drive the fundamental need: an instant angular velocity ratio is necessary to adhere to the same.

(3) the basis of involute gear specification: addendum circle, root circle, sub-degree circle, modulus, number of teeth, pressure angle.

2, involute gear of the main features:

Transmission ratio accurate, stable, high power;

High reliability, long service life;

Manufacturing high precision, high cost;

Not suitable for long-distance transmission.

3, used in the project reducer, gearbox and so on.