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Analysis on the classification of PEEK gears for gear materials
Release Time:2016-1-24 11:35:30
Analysis on the classification of PEEK gears for gear materials
The gear can be classified according to the tooth profile, the gear profile, the tooth line shape, the tooth surface and the manufacturing method.
The tooth profile of gear includes tooth profile curve, pressure angle, tooth height and displacement. Involute gear is easy to manufacture, so the gear used in modern times, the involute gear accounted for the absolute majority, and cycloid gear and circular arc gear is less. PEEK products - gear material PEEK, hotline: 020-36536603
The pressure angle, the smaller the carrying capacity of small pressure angle gear; and large pressure angle of gear, although the carrying capacity is higher, but the bearings in the transmission torque under the same load increases, so only for special cases. The gear tooth height has been standardized, generally using the standard tooth height. There are many advantages of the modified gear, which has been widely used in all kinds of mechanical equipment.
In addition, the gear can also according to their appearance: cylindrical gears, bevel gear and non-circular gear, rack, worm and worm gear; tooth shape is divided into straight gear, helical gear, herringbone gear, gear curve; in the tooth's surface into gear, gear; manufacturing methods can be divided into cast gear cutting, gear, gear, gear rolling sintering etc..
The material and heat treatment process of the gear have a great influence on the bearing capacity and the size and weight of the gear. Before 1950s, the gear with carbon steel, alloy steel and in 70s to 60s, by surface hardening steel, and now the gear has gradually become a trend of plastic steel, all plastic gear with PEEK optimal gear. According to the hardness of tooth surface can be divided into soft and hard gear surface two.
The gear bearing capacity of the soft tooth surface is low, but the manufacture is easy, the running performance is good, and the utility model is not used for the size and the weight of the drive, and the general machinery of small volume production is used. Because the pair of gears, a heavy burden, so as to make the size of the working life of the gear are roughly equal, the tooth surface of the gear wheel hardness than high.
The carrying capacity of gear is high, it is after finishing gear cutting, and then quenching, case hardening or carburizing and quenching treatment, in order to improve the hardness. However, in the heat treatment, the gear will inevitably produce deformation, so after heat treatment must be grinding, grinding or cutting, in order to eliminate the error caused by deformation, improve the accuracy of the gear.