Taking any slice gear pair in Fig. 1 as an example, the calculation method of micro element meshing force FIJ is described in detail. The load-bearing deformation of gears makes a pair of teeth enter and exit meshing ahead of time, and the actual meshing interval is longer than...
40CrMnMo is selected as the solar gear and planetary gear. The material is assumed to be isotropic. Next, constraints are added to the model to fix the planetary gear. Add the force to the sun wheel, and input the couple value converted from torque into 955000n · mm in...
In order to further illustrate the superiority of this method, the order spectrum obtained by EMD and itd is compared It can be seen from Figure 1 that there are many interference factors in the order spectrum of broken tooth fault obtained by ITD method, which is more prominent...
By introducing the quadratic penalty factor α and Lagrange operator λ (T), the constrained variational problem is transformed into the unconstrained variational problem, and the following augmented Lagrange function expression is formed The eigenmode components and their central frequencies are updated iteratively by using the alternating direction of multiplier...
As an important transmission system of mechanical equipment, mechanical gear has the advantages of high transmission efficiency, high transmission precision, wide range of use, reliable work and so on. It is widely used in aerospace, navigation, automobile, coal mine, engineering machinery, electronics and other fields. The machining and forming...
The mechanical fault comprehensive simulation test bench produced by a company is used to carry out the fault feature extraction test of gearbox under variable speed. The test-bed is mainly composed of motor, tachometer, acceleration sensor, two-stage parallel gearbox and magnetic powder brake. The speed is changed by matching...
The signal f is decomposed into k IMF components, each of which is a finite bandwidth with different center frequency. Then the variational problem can be described as minimizing the sum of the bandwidth of each component, and the constraint condition is that the sum of each component is...
In order to calculate the order tracking, a reference axis should be selected as the basis of calculation. The main idea is to collect the rotation speed signals of the reference axis with equal time intervals by hardware, and then obtain the order spectrum by angle domain resampling, cubic...
According to the energy method, the bending potential energy, shear deformation energy and radial compression deformation energy are also stored during gear meshing, thus forming Hertzian stiffness, bending stiffness, shear stiffness and radial compression stiffness.Therefore: In the equation, is the meshing force,, s and alpha respectively represent the bending...
Using the improved LTCA method to calculate the time-varying meshing stiffness of gears is another high-efficiency and high-precision calculation method. Based on LTCA, this method can accurately obtain the tooth surface load distribution P and the load transmission error Z under the current contact position load P. According to...