Classification of gear structure

Generally, there are gear teeth, tooth slots, end faces, normal faces, addendum circles, tooth root circles, base circles, and index circles.

gear teeth

Teeth for short, are each raised part of the gear for meshing. These raised parts are generally arranged in a radial pattern. The teeth on the paired gears are in contact with each other, so that the gears can be continuously meshed.

cogging

It is the space between two adjacent gear teeth on the gear; the end face is the plane on the cylindrical gear or cylindrical worm, which is perpendicular to the axis of the gear or worm.

end face

are the planes at both ends of the gear.

Dhamma

Refers to the plane perpendicular to the gear tooth line.

Addendum

Refers to the circle where the tip of the tooth is located.

Root circle

Refers to the circle where the groove bottom is located.

base circle

The occurrence line forming the involute is a pure rolling circle.

Index circle

It is the reference circle for calculating the geometric dimensions of the gear in the end face.