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What Is The Difference Between A Bevel Gear And A Spiral Gear?
- Jan 12, 2018 -

What is the difference between a bevel gear and a spiral gear?

Bevel gear

The tooth distribution on the cone, so the tooth to the big end of the small end is gradually shrinking, tooth thickness and tooth height along the conical line direction changes gradually, so the modulus and diameter change. In order to facilitate the design and manufacture, shall prevail with big, top gear A, high F, high tooth pitch diameter D, diameter of addendum and dedendum circle diameter Da DF (unlabeled graphs) are in the main measure; and as the standard big endian modulus touch number (GB/T12368 - 1990), on which it is the basic parameters of the size of each part of the bevel gear. The big end of the back cone generatrix and pitch cone generatrix vertical. The angle delta between the axis of the conical gear and the conical line of the dividing cone is called the conical angle. It is another basic parameter of the conical gear.

Spiral bevel gears are widely used in mechanical transmission fields such as automobiles, aviation and mines because of their advantages such as large overlap coefficient, strong bearing capacity, high transmission ratio, smooth transmission and low noise. There are two kinds of spiral bevel gears, one is the spiral bevel gear, the large wheel axis intersects with the small wheel axis, one is the hypoid spiral bevel gear, the large wheel axis and the small wheel axis have a certain offset distance. At present, the production of spiral bevel gear (world-class firms) is mainly the United States Gleason Corp and the Swiss olconn. The spiral bevel gear made of Gleason tooth is widely used in China at present. Because of its meshing principle and complexity, China has organized a lot of manpower and material resources to study related spiral bevel gears in the 70s of last century. The famous scholars in this field are Ceng Tao, Tang Jinyuan, Fang Zongde, Wu Xutang, Wang Xiaochun and so on.


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