A hardened gear train is a mechanical transmission element used in a gearbox..... Gear transmission transmits motion and power between any two shafts in space through the meshing of gear teeth, which can vary in shape and speed. Gearing has a wide range of applications and its gear ratio is constant. It is highly efficient and has a long service life. In the process of designing and manufacturing mechanical parts, it is not only necessary to consider the material properties to adapt it to the working conditions of the parts and make them durable. Better machinability and economy of the material are also necessary to improve the performance of the parts.

How to select gears for hardened gears?

The mechanical properties of selecting hardened gears are the mechanical transmission elements to be used in a gear reducer. A gear transmission transmits motion and power between any two shafts in space through the meshing of gear teeth, which can vary in shape and speed. Gears have a wide range of applications. The gear ratio is constant. They are highly efficient and have a long service life. In the process of designing and manufacturing mechanical parts, it is not only necessary to consider the material properties to adapt to the working conditions of the parts and make them durable. Better machinability and material economy are also necessary to improve part performance. This results in lower costs and material consumption. If the material for gears is not properly selected, the part may fail prematurely or even break. Therefore, the intelligent selection and use of metal materials is a very important topic.

It meets the mechanical properties of hardened gearbox including strength, hardness, ductility and toughness. And it reflects the characteristics of the materials used. When the gear enters the meshing, there are contact stresses on the contact part of the tooth surface, and high bending stresses at the tooth root, which can reduce the strength of the tooth surface or tooth body. Each point on the tooth surface slides relative to each other, causing wear. The main types of gear failure are point wear, tooth galling, tooth plastic deformation and tooth fracture. Therefore, the gear material is required to have high bending fatigue strength and contact fatigue strength, the tooth surface should have sufficient hardness and wear resistance, and the core should have a certain degree of strength and toughness.

According to the material properties, determine the grade of the material. It is necessary to determine the mechanical properties or hardness of the material, and then achieve the required hardness range through various heat treatment processes, giving the material different mechanical properties. The machinability of a material is its ability to adapt to different machining requirements. Hardened gearbox gears are manufactured by forging, cutting and heat treating, so when selecting a material, attention should be paid to its machinability. Generally, carbon steel is good at forging and cutting, and its mechanical properties can meet the requirements of general working conditions.

The role of hardened gear reducer in crane operation

A hardened gear reducer is a drive transmission mechanism that utilizes the variable speed of the gear train to reduce the speed of the motor to that required to produce more torque. In modern power and fitness transmission mechanisms, the range of applications of gear reducers has become quite wide.

It can be mainly seen in the transmission of various mechanical equipment, ranging from vehicles, ships, automobiles, electric locomotives, medium- and heavy-duty machines used in mechanical engineering, process equipment widely used in mechanical engineering, and automation technology. At present, in Russia and abroad, electric drives are used in mechanical engineering, automation technology, as well as in household appliances and quartz watches in everyday life. The application range shifts from large driving force to small load. Its application areas can be seen. In industrial production, the speed reducer has the functions of slowing down and increasing torque. Therefore, it is widely used in mechanical equipment to convert speed and torque.