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Contact stress of helical gear in automobile transmission

Due to the complex contact problem of helical gear, further research is needed in the following aspects: ① Fully parametric modeling of involute helical gear, including fully parametric modeling of helical gear shaft model. ② The problem of thermal fluid coupling of helical gear and helical gear contact field...

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Automobile gear meshing transmission

Based on the research of bionics theory, combined with the characteristics of automobile gear meshing transmission, and based on the model test, the bionic micro wear-resistant shape on the surface of the ring block sample is optimized, and the concave bionic wear-resistant gear is designed and processed; At the...

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Gluing failure of automobile gear tooth surface

In the high-speed and heavy-duty gear transmission of automobile gears, the pressure in the meshing area of the tooth surface is high, and the sliding speed is high, which makes the working surface temperature very high, and the viscosity of the lubricating oil is reduced, resulting in lubrication failure,...

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Pitting failure of automobile gear tooth surface

Fatigue pitting of the tooth surface of automobile gear is a common failure form of closed soft tooth surface gear transmission with good lubrication. When the gear teeth work, the transmitted working load is added to the limited actual contact area, and a great pressure will be generated on...

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Methods of improving wear resistance of Automobile Gears

Traditionally, the methods to improve the wear resistance of gears are mainly to change the gear manufacturing materials or the surface wear resistance of gears through heat treatment process. The common heat treatment processes of automobile gears include carburizing quenching, carbonitriding, shot peening strengthening, laser cladding and high-frequency quenching....

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Wear failure of automobile gear tooth surface

In automobile gear transmission, there are many different forms of tooth surface wear with different working conditions. There are mainly two kinds: abrasive wear caused by hard debris entering the friction surface; In addition to rolling, there is relative sliding between meshing tooth surfaces, which is abrasive wear caused...

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Basic situation of automotive gear steel in China

In China’s automobile industry, the materials used for gears in the gearbox have mainly used the gear steel series of the former Soviet Union for many years; In the 1960s and 1970s, in order to save Cr and Ni resources, China studied B steel and Si – Mn, Cr...

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Basic situation of automobile gear steel abroad

In foreign countries, the carburized gear steel initially used is basically manganese steel and manganese chromium steel. For example, the Japanese mainly use smn420 and SMN C420, while the Germans mainly use 16MnCr5 and 20mncr5. This kind of steel is cheap and has good comprehensive properties. At that time,...

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Wear resistance test of Automobile Gears

Through the friction and wear test, the comparative experimental research between the smooth sample and nine different pit bionic ring samples is carried out, the friction and wear between the two tooth surfaces of the automobile gear under the normal meshing wear state is simulated, and it is concluded...

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