For the calculation of heavy load large module gear and rack drive, there are many literature research calculation methods, some use integral method, some use mapping function method. In the calculation method of gear root bending stress, the bending section is more accurate than the tooth root stress calculated...
The gear rack with large module and heavy load is not suitable for the conventional hobbing and slotting processing method. For small gears, the milling process is usually designed according to the tooth profile, and for racks, CNC cutting or casting is adopted according to the tooth profile. In...
With the rapid development of China’s economy, mining machinery, engineering machinery, marine engineering equipment and other heavy machinery and equipment are widely used in energy, marine, transportation, metallurgy and other fields. Due to the simple structure, direct transmission and other characteristics of heavy-duty gear and rack transmission, it has...
In order to verify the actual effect of domestic R&D and manufacturing of heavy gears, Shendong Coal Group Co., Ltd. selected the left rocker arm of 6C/LWS636 shearer and installed the corresponding domestic parts, and the right rocker arm is an imported heavy gear. Both of them went down...
The whole process of heavy gear processing shall strictly control the quality and make tracking records, and must be tested and inspected after completion. Relevant standardsT: (1) The surface hardness of gear teeth reaches HRC 59 ～ 62 or HV 670 ～ 750; (2) Metallographic examination The carburized layer...
By using the professional heavy gear simulation analysis software, combined with the actual measurement parameters and working condition parameters, the dynamic load simulation analysis of all heavy gears is carried out. Based on the analysis results, the optimal design scheme that is closer to the actual working condition is...
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...