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The design of precision machine tool gears is an important form of gear transmission, which can be widely used in various fields of machine manufacturing. However, different types of precision machine tool gears have different applications. The gear can be divided into the following three categories in terms of axial and positional relationship:

The first category: parallel axis classes, parallel axis classes are divided into the following:

[1], spur gear: a linear cylindrical gear whose tooth rib is parallel to the shaft center.

[2], rack wheel: Straight line gear that meshes with the spur gear, it can be considered that the pitch of the gear becomes infinite.

[3], internal gear: a linear cylindrical inner gear that meshes with a spur gear.

[4], helical gear: a cylindrical gear with a toothed rib.

[5], helical gear: a linear gear that meshes with a helical gear.

[6], double helical gear: a helical gear formed by left and right spurs.

The second category: cross-axis classes, cross-axis classes are as follows:

[1] Straight-toothed bevel gear: an umbrella gear with the tooth bar and the busbar of the pitch cone.

[2], curved bevel gear: a bevel gear with a curved line with a helical angle.

[3], zero spiral curved bevel gear: the spiral angle is zero curved bevel gear.

The third category: offset axis class, offset axis class has the following:

[1], cylindrical worm gear: cylindrical worm gear is the general term for worm and gear.

[2], misaligned helical gear: It is a cylindrical helical gear that requires the use of a transmission between the wrong axes.

[3] Face gear: A disk-shaped gear that can be engaged with a spur gear or a helical gear.

[4], drum-shaped worm gear: a general term for a concave drum worm and a gear that meshes with it.

Therefore, in summary, the above three categories have their own advantages and use different places. Therefore, when using various types of gears, you should look at the type of gears you need to prevent yourself from choosing. Wrong, resulting in the installation of mechanical equipment can not be used.