Sheet Metal · 2021年11月20日

Offset analysis of gear axis in automobile reducer

The main reducer of the rear axle of the automobile adopts hyperbolic gear transmission with smooth meshing, low noise, light weight and compact structure. Due to the axis offset of the driving and driven gears, the helix angle of the driving gear is greater than the helix angle of the driven gear, which improves the coincidence of the gears, the transmission is more stable, the noise is greatly reduced, and the carrying capacity is improved. On the other hand, this gear transmission not only causes rolling friction between the tooth surfaces of the driving and driven gears, but also longitudinal sliding friction. Under such harsh working conditions such as high temperature and high pressure, the oil film between the tooth surfaces is easily damaged. Therefore, hyperbolic gear oils with extreme pressure additives and reliable overall performance must be used.

At present, organic compounds of phosphorus, sulfur, and chlorine are used as additives at home and abroad. Under extreme pressure, additives can generate metal phosphides, sulfides, chlorides and other low-melting substances, forming a layered structure on the friction surface, which is easy to shear, so under extreme pressure conditions, it can replace the broken oil film , Play the role of extreme pressure lubrication.

Ordinary gear oil is refined from lubricating oil. In use, it mainly relies on the viscosity and physical adsorption of its own arsenic oil to form an oil film on the gear surface to separate the tooth surface for lubrication. The thickness of the oil film produced by ordinary gear oil will also change with the change of load. When the load increases to a value, it will cause the oil film to rupture, causing dry wear on the gear surface, causing scratches between the gear teeth, Glue and severe wear, so the final drive must use hyperbolic gear oil with extreme pressure performance. For automotive parts and parts machining, PTJ Shop offers the highest degree of OEM service with a basis of 10+ years experience serving the automotive industry. Our automotive precision shop and experts deliver confidence. We have perfected the art of producing large component volumes with complete JIT reliability, backed by the quality and long-term reliability our customers expect.

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