What is a Helical Gear?

Gear is a common part often used in mechanical transmission. The gear is made of high-quality high-strength alloy steel, carburized and hardened on the surface, with strong bearing capacity and durability. In practical applications, helical gears are widely used in high-speed and heavy-load occasions because of their stable transmission, low impact, vibration, and noise.

1. Helix angle: it refers to the helical gear

advantage:

(1) Good meshing performance: The meshing process between the teeth of helical cylindrical gears is an excessive process, and the force on the teeth is gradually from small to large, and then from large to small; helical gears are suitable for high speeds. Overload situation.

(2) Large coincidence: The increase of the coincidence increases the bearing capacity of the gear. Thereby extending the life of the gear. The degree of coincidence mainly depends on the meshing time, while the meshing time of the helical gear is long, the contact area is large, and the stress is reduced. And make the transmission smooth and increase its economy.

(3) Compact structure: The smaller the minimum number of teeth, the more compact the structure.

Disadvantages and corrections:

The helical gear reducer is a novel reduction transmission. It has many advantages, such as

The meshing line of the spur gear is parallel. Its simple processing and no axial component force are its advantages, but its smoothness is poor and there is vibration. The meshing line of the helical gear is a slanting line.

Helical gear is automotive power

1. Common problems and causes of helical gear reducers:

a. Reducer heat and oil leakage;

b. Worm gear wear;

c. Transmission pinion gear wear;

d. Worm bearing is damaged.

2. Solutions to common problems with helical gear reducers

(1) Guarantee assembly quality

Professional tools are necessary to ensure assembly quality. Original accessories are generally the best choice for disassembling and replacing parts. When one of the paired parts is damaged, the principle of pairing replacement is generally adhered to. When assembling the output shaft, pay attention to tolerance coordination: Hollow shafts are also the key objects to be protected. If there is abrasion, rust, or surface surface dirt, etc., it will affect disassembly in future maintenance.

(2) Selection of lubricants and additives

The purpose of using lubricating oil and additives is to make the reducer still have a layer of oil film on the surface to achieve protection when the reducer stops moving. Oil film protection can prolong the life of the machine when it is frequently started, while protecting the machine from running under high speed and heavy load. The use of additives can also effectively prevent oil leakage, make the seal mission longer, and maintain softness and elasticity. helical gear. The lubricating oil of the worm gear reducer is generally 220 # gear oil. The use of additives is generally used when the use environment is poor, such as large load, instability caused by frequent starting and so on.

(3) Selection of installation position of reducer

Where possible, vertical installations should be avoided. Vertical installation may cause problems such as oil leakage.

(4) Establish lubrication maintenance system

"Five Principles" is one of the lubrication maintenance systems. The first is to make regular inspections to ensure a clear division of responsibilities. The second is to strictly control the temperature. Generally, the temperature should not exceed 40 degrees and the temperature of oil should not exceed 80 degrees. The reducer is properly lubricated. When the quality of the oil is reduced or noise occurs, it should be stopped immediately and repaired ^[2] .