Spur Gear Design Straight Helical Machining Spur gears
There are two main types of Spur Gears: external and internal. The external gear has teeth cut on the outer surface of the cylinder. The two external gears mesh together and rotate in opposite directions. In contrast, internal gears have teeth cut on the inner surface of a cylinder. The outer gear is inside the inner gear, and the gears rotate in the same direction. Internal gear assemblies are more compact than external gear assemblies because the gear shafts are positioned closer together. Internal gears are mainly used for planetary gear transmission.
A spur gear is a cylindrical gear with parallel and coplanar shafts and spur teeth parallel to the output shaft. Spur teeth are the simplest and most common type of gear - easy to manufacture, our products Spur Gear Parts are suitable for a wide range of applications.
The role of spur gear Transmission Gears
Make multiple racks and gears mesh and perform multiple linkages to make the elevator move up and down; 3 racks and gear assemblies can be assembled on the same part; when installing the gears, in order to reduce the backlash, the position needs to be adjusted.
Frequently Asked Questions (FAQ) about this Toothed Parts
1. What is backlash?
Backlash, also known as backlash, is the distance between the tooth surfaces of a pair of gears when they mesh.
2. Is it possible for the gears to have no backlash?
In order to make the gear rotate smoothly, proper backlash is necessary. However, excessive backlash will deteriorate the meshing, and the noise will increase, resulting in a decrease in transmission accuracy. On the contrary, if the backlash is too small, it is easy to cause poor lubrication, resulting in damage to the gear teeth.
In addition, the two tooth surfaces are in contact, so the possibility of noise increases.
If there is a certain amount of backlash, the probability of problems with gear products will decrease, so please avoid no backlash.
3. How much torque can be transmitted when the gear is fixed with a top screw?
The screw fixing shaft is a simple fixing method. In actual use, please use keys and bushings (friction joint parts) together as much as possible.
4. What is the difference between the bending strength of the tooth and the strength of the tooth surface?
The strength of gears generally has two types: the bending strength of the tooth and the strength of the tooth surface.
Bending strength of the teeth: The maximum bending stress that the gears can withstand when meshing.
Tooth surface strength: The maximum contact stress that the gear can withstand when it is engaged.
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