The advantages and disadvantages of helical gears and spur gears used in gear reducers

The advantages and disadvantages of helical gears and spur gears used in gear reducers are as follows, for reference.

XNUMX. The advantages and disadvantages of using helical gears

1. Disadvantages:

a. It will cause bad axial force.

b. Slightly increased manufacturing costs.

2. Advantages:

The,helical gearIt can be regarded as a cylindrical gear made of a set of thin gears with suitable teeth. In this way, the contact of each piece is in a different part of the tooth profile, which has the effect of compensating the error of each thin gear. This compensation effect is due to the gear teeth. It is elastic and very effective, so the result is that the gear teeth with an error of less than 10mm can make the error take an average effect, so under load, it can run as smoothly as the gear with an error of 1mm.

Because at any instant, about half of the time (assuming the coincidence is about 1.5) there will be two teeth meshing, which brings additional benefits in terms of strength.Therefore, the stress can be established on the basis of 1.5 times the tooth width instead of a tooth width.

b. The advantages in terms of vibration and strength far outweigh the disadvantages caused by axial thrust and slightly increased manufacturing costs.

c. Use helical gears instead of helical gears in reducer manufacturingSpur gear.

Second, the advantages and disadvantages of using spur gears

1. Disadvantages:

a. It can only bear radial load but not axial load, resulting in unreasonable load distribution and reducing the overall life of the gearbox.

b. Whether due to design, manufacturing or deformation, some changes in the involute profile may occur along the entire tooth surface at the same time.

c. This will result in a regular, once per tooth excitation, which is often very strong.The resulting vibration not only causes a large load on the gear, but also causes noise

d. In addition, sometimes the additional strength obtained by the engagement of two pairs of teeth during the contact time cannot be used because the stress is limited by the condition of the single tooth engagement during the cycle.

e. The main reason is that they produce vibrations.

2. Advantages:

Large transmission ratio range, high efficiency and easy processing.

The above is a description of the advantages and disadvantages of helical gears and spur gears used in gear reducers, including but not limited to, welcome to add if there are any deficiencies.

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