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...
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Study on grinding surface performance of heavy duty spiral bevel gear
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...

Research conclusion of fatigue crack and data simulation of heavy load transmission gear
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...

Establishment of bending fatigue model of transmission gear in heavy equipment
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,...

Numerical simulation of bending fatigue of 42CrMo heavy equipment transmission gear
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...

Analysis of bending fatigue test results of heavy load transmission gears
Before the formal bending fatigue test, the load level of the test needs to be determined. Pick two from the processed test pieces for static strength test. According to the static strength test, the maximum load level is 32KN. Five load levels are selected for this bending fatigue test,...

Selection of fatigue crack evolution test method for heavy load transmission gear
The bending fatigue characteristic curve and bending fatigue limit stress of the test gear shall be combined according to different test points according to different test purposes. When using the group method to calculate the Reliability stress life curve (P-S-N curve) of the gear, the test results should include...

Sample design of heavy duty transmission gear
The transmission gear of heavy equipment used in the bending fatigue test is designed based on the gear applied in the actual factory. The success of gear design and manufacturing is related to the success or failure of the whole bending fatigue test. A successfully designed gear needs to...

Design of fixture for fatigue crack evolution test of heavy load transmission gear
The test adopts the form of single tooth loading. It is necessary to design special fixtures according to the standard requirements to carry out tooth fatigue test. When designing the fixture, the following requirements shall be met: 1) The fixture must have enough stiffness to ensure the correctness of...

Analysis of cycle times of different crack length and stress intensity factor at crack tip of heavy load transmission gear
The stress ratio r = 0.6, the number of cycles n corresponding to the stress intensity factor at the crack tip under different crack lengths and different crack lengths obtained by simulation, and the number of cycles n obtained from the test and the calculated n are drawn into...
