Refer to the commonly used materials for heavy gear processing in China, consult the steel brand manual, and compare the material composition and mechanical properties of 18Cr2Ni4WA, a typical heavy gear processing material, with that of 3310 Chemical in the United States. The comparison results are shown in Table...
Based on TCA technology, the corresponding high-speed and heavy-duty spiral bevel gear surface impressions and transmission error curves before and after optimization are obtained, as shown in Figure 1 and Figure 2. It can be seen from Figure 1, figure 2 and table 1: comparing the contact marks of...
Since the coincidence degree and the transmission error amplitude at the transition of high-speed and heavy-duty spiral bevel gears are mainly affected by the second-order contact parameters, and the three second-order contact parameters are independent of each other, based on the local synthesis method and TCA, LTCA technology, the...
Without considering the elastic deformation of the tooth surface (assuming that the gear is completely rigid), a pair of local conjugate surfaces, that is, point contact surfaces, are formed between the tooth surfaces of large and small gears. At the same time, in order to ensure the normal operation...
In the fields of aerospace vehicles, high-speed and heavy-duty spiral bevel gears, as the key of the transmission system, have strict requirements on its load-bearing capacity, contact performance, dynamic characteristics and reliability. With the development of modern machinery in the direction of high power to weight ratio, the load...
The spiral bevel gear of heavy vehicles generally adopts high-strength alloy steel such as 30CrMnTi. This kind of steel is a special material. The problem of large deformation cannot be solved by using the common heat treatment process. In order to ensure the grinding accuracy, the grinding allowance is...
Heavy duty spiral bevel gear has many excellent characteristics, such as stable transmission performance, low noise, large transmission torque and so on. Therefore, it is widely used in the transmission system of heavy vehicles. At the same time, it meets the requirements of light weight, high bearing capacity, low...
Taking the transmission gear of heavy equipment as the research object, the fatigue crack propagation and fatigue fracture of gear teeth are studied. The compact tensile specimen made of 42CrMo steel was tested for fatigue crack growth and numerically simulated to verify the feasibility of the test; Then, the...
The model used for the numerical simulation of gear bending fatigue is the same as that used in the bending fatigue test of 42CrMo steel heavy equipment transmission gear. Therefore, the analysis model is created according to the design parameters of heavy-duty gear in the finite element software ABAQUS,...
When testing the bending fatigue of 42CrMo heavy equipment transmission gear by experimental method, the data results have obvious advantages, such as: the data results are true, reliable and authoritative. Referring to the national standard GB / t14230-1993, the test data obtained can most truly and directly reflect the...