The difference between internal gear and external gear

The difference between internal gear and external gearThe descriptions are as follows, for reference and understanding. If you have any related questions or processing needs, you can consult EP free of charge.

1. Internal gearIt is the product with the gear teeth on the inner circle; and the external gear is the product with the gear teeth on the outer circle.

2. The addendum circle of the internal gear is within its index circle, and the tooth root circle is outside its index circle.

   

3. The tooth profile curve of the internal gear is also involute, but the shape of the internal gear is different from that of the external gear. The tooth profile of the internal gear is concave while the tooth profile of the external gear is convex.

4. The top cut of the internal gear is equivalent to the undercut of the external gear.When designing and calculating the parameters of the internal gear, the cogging can be regarded as the teeth of the external gear.

5. The inner gear is annular, the outer ring is smooth, and the inner ring has teeth; while the outer gear is the original disc shape, and the outer ring has teeth.

6. In order to make the tooth profile on both sides of the tooth tip of the internal gear all involute, the tooth tip circle must be greater thangear的基圆。 The base circle.

EP -Professional processing and customization of various precision internal gears and external gears, quality assurance.Regarding the difference between them, if you have any unclear points or related needs, you can click the consultation window on the right to consult for free.