Aiming at the problem that the applicable scope and results of the three existing domestic standards for the gluing of involute cylindrical gears are not clear, the flash temperature method and the integral temperature method are studied in detail. Through a large number of examples, the similarities and differences...
As one of the key basic parts of the mechanical industry, involute cylindrical gears are widely used in aerospace, rail transit, large ships and other major national engineering fields. In recent years, the service environment of involute cylindrical gears has been deteriorating, the demand for reliability has been increasing,...
The double-input-single-output helical gear system is an important part of many marine power propulsion devices. The nonlinear instability of the system caused by asymmetric dynamic parameters cannot be ignored. Based on the scientific description of the internal parameters of the system, this paper studies the dynamic behavior of the...
As shown in the figure, the maximum value of dimensionless vibration displacement u Max (u) and the minimum value of vibration displacement v Min (v) vary with load ratio λ And load value f1, indicating: (1) The change of load ratio of helical gear has little effect on the...
Miter gears and internal gears are two different types of gears commonly used in mechanical systems. While both serve the purpose of transmitting rotational motion between two shafts, they have distinct characteristics and applications. Let’s compare these two gear types: Miter gears are suitable for transmitting motion at a...
Figure 1 shows the dimensionless vibration displacement u and v with load ratio of p, g tooth pairs and q, g tooth pairs λ Bifurcation diagram of change. For p and g tooth pairs, the system successively undergoes quasi-periodic motion with the increase of load ratio（ λ= 0 →...
Figure 1 shows the dimensionless vibration displacement u and v with load ratio of p, g tooth pairs and q, g tooth pairs λ Bifurcation diagram of change. For p and g tooth pairs, with the increase of load ratio, the system moves from quasi-periodic（ λ= 0 → 0.57)...
Case hardening is a widely used heat treatment process to enhance the surface hardness and wear resistance of components. However, it can sometimes be accompanied by various defects that can compromise the integrity and functionality of the heat-treated parts. Troubleshooting these heat treatment defects is crucial to identify the...
The time-varying meshing stiffness, stiffness phase difference, time-varying backlash, comprehensive transmission error, meshing damping and various meshing states of helical gears are considered comprehensively. They are dynamic equations with strong nonlinearity. Therefore, it is difficult to obtain the evolution law of their dynamic characteristics through analytical methods. The dynamic...
The double-input-single-output helical gear transmission system under asymmetric load has become an important structure in the important power propulsion device of large ships due to its advantages of high power density, compact structure and flexible power parameter ratio. However, due to the particularity of the structure, with the improvement...