What is the difference between bevel gear and spiral gear?
Spiral bevel gear is a kind of stable transmission ratio in stable, low noise transmission transmission parts, have different names in different regions, also called arc tooth bevel gear, bevel gear, spiral bevel gears, bevel gear, spiral bevel gear. The spiral bevel gear with high efficiency, stable transmission ratio, arc overlap coefficient, high carrying capacity, smooth transmission smooth, reliable operation, compact structure, material saving, space saving, abrasion resistance, long service life, low noise. In all kinds of mechanical transmission, the transmission efficiency of spiral bevel gear was the highest in all kinds of transmission especially high power transmission has great economic benefits; the need to transfer the same torque transmission a transmission pair, space, belt, chain drive than the space required for small size; spiral bevel gear transmission ratio of permanent stability often, stable transmission ratio is a basic requirement for transmission of the transmission properties of the various types of machinery and equipment; spiral bevel gear reliable work, long service life.
In bevel gears, according to the length of the teeth, there are straight gears and curved gears. The straight line is the straight tooth bevel gear, and if it is a curve, it is called a curve gear. At present, spiral bevel gear should be the synonym of curve bevel gear. According to the curve, there are three kinds of spiral bevel gears, which belong to different companies. The hypoid gears (including circular bevel gears) designed by the Gleason Corp of the United States, the extended involutes gears of the Swiss Corporation, and the quasi involute gears of the forest of germany.In simple terms, the Japan US car department is equipped with Gleason gear, such as BUICK, TOYOTA. The European car systems, such as BENZ, BMW and AUDI, use the Ollie gear.
Spiral bevel gear is widely used in automobile, aviation, mine and other mechanical transmission fields for its advantages of large overlap coefficient, high carrying capacity, high transmission ratio, stable transmission and little noise. There are two kinds of spiral bevel gears, one is spiral bevel gear, the big wheel axis intersects the minor axis, and the other is hypoid spiral bevel gear, the big wheel axis and the small shaft line have a certain offset distance. At present, the production of spiral bevel gear world-class firms mainly Gleason Corp in the United States and Switzerland's Kang Kang company. The spiral bevel gears with Gleason teeth are widely used in our country. Because of its meshing principle and complex, our research of spiral bevel gear from the last century in 70s organized a large number of manpower, the famous scholars in this field are Ceng Tao, Tang Jinyuan, Fang Zongde, Wu Xutang, Wang Xiaochun etc..
Bevel gearThe 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 between the axis of a conical gear and the index cone of a cone is called the cone angle of graduation, and it is another basic parameter of the bevel gear.
