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What are the types of gears and gear applications

Update:08 Jul 2020
Summary:

According to specifications or size, gear models are divided into standard and non-standard;According to different measurement units at home and abroad, gear models are divided into metric and imperial systems.Metric gear modelThe main models of metric gears are: M0.4 M0.5, etc.   Inch gear model.DP gear is an inch gear (diameter pitch gear) used in […]

According to specifications or size, gear models are divided into standard and non-standard;According to different measurement units at home and abroad, gear models are divided into metric and imperial systems.Metric gear modelThe main models of metric gears are: M0.4 M0.5, etc.

 

Inch gear model.DP gear is an inch gear (diameter pitch gear) used in Europe, America and other countries. It refers to the number of teeth on each inch of the circle diameter. The larger the value, the smaller the teeth. Diameter joint DP=z/D (z—the number of teeth, D—the diameter of the index circle, in inches), with the diameter joint DP unit (1/in). Its conversion relationship with the metric system is m=25.4/DP, which means that it is the same as our commonly used modulus.

The main models of inch gears are: DP1 DP1.25, etc.China's iron and steel smelting technology level is also continuously improving. The use of advanced smelting technologies such as ladle secondary smelting, fine-tuning of ingredients and continuous casting and rolling enables steel mills to produce gear steel for gears with high purity and hardenability with narrowing. The domestic production of imported steel for automobile gears has been achieved, which has brought China's gear steel production to a new level. Nickel-containing high hardenability steel for domestic heavy-duty automobile gears suitable for my country's national conditions has also been applied and achieved good results. The heat treatment technology for automotive gears has also evolved from the use of well-type gas carburizing shields in the original 50-60s to the current widespread use of computer-controlled continuous gas carburizing automatic lines and box multi-purpose furnaces and automatic production lines (including low-pressure (vacuum) carburizing Technology), gear carburizing pre-oxidation treatment technology, gear quenching control cooling technology (due to the use of special quenching oil and quenching cooling technology), gear forging isothermal normalizing technology, etc.

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