The 72 h salt spray corrosion surface morphology of 20mncr5 steel, an automobile gear test material after normalizing and isothermal […]
1. Material preparation The automobile gear steel 20mncr5, which is widely used, is selected as the experimental material. The energy […]
The size and position of the contact area of spiral bevel gear can reflect the contact performance of spiral bevel […]
The variation law of actual speed and torque can reflect the approximate meshing characteristics of spiral bevel gears. In order […]
In order to obtain the real meshing performance of spiral bevel gear in reduction box, the meshing performance parameters were […]
The load contact analysis method of spiral bevel gear can quickly and efficiently obtain its meshing transmission characteristics, but the […]
In order to study the influence of different speed and load conditions on the gear stress in the meshing transmission […]
After the calculation, extract the speed change law of spiral bevel gear meshing transmission under various working conditions, as shown […]
The dynamic loading analysis adopts the same finite element mesh model as the static analysis, but the dynamic explicit analysis […]
The finite element static analysis method can be used to analyze the load contact of spiral bevel gear in detail, […]
According to the formula, the value of each calculation coefficient and the basic parameters of spiral bevel gear, the values […]
According to the formula, the nonlinear ultrasonic coefficients of different samples are calculated according to the amplitude of the fundamental […]
In order to further analyze the tooth surface contact stress and tooth root bending stress of spiral bevel gear under […]
In order to study the influence of the mean value of time-varying meshing stiffness of helical gears on the vibration […]
The contact stress of tooth surface and the bending stress of tooth root affect the working performance of gear, such […]
Input the obtained time-varying meshing stiffness curve and meshing impact curve into the dynamic equations at the same time to […]
In order to study the influence of the time-varying meshing stiffness amplitude of gears on the vibration characteristics of the […]
The coincidence degree represents the average value of the number of wheels participating in meshing at the same time. The […]
In order to study the influence of the above two excitation factors on the system vibration, the vibration speed diagram […]
After the calculation is completed, the change laws of contact force of four adjacent tooth surface contact pairs under the […]
The high-speed helical gear drive of an electric vehicle is taken as the research object, and its structure diagram is […]
After the calculation, in order to obtain the meshing transmission accuracy of spiral bevel gear, in the ABAQUS post-processing module, […]
The basic parameters of spiral bevel gears are shown in Table 1. Parameters Driving wheel Driven wheel Number of teeth […]
According to the geometric characteristics of spiral bevel gear, the gear can be divided into multiple independent teeth with the […]
The finite element analysis method of spiral bevel gear has gradually developed into a widely used numerical analysis method, and […]
(1) The influence of compound optimization modification scheme of top involute and tooth direction drum of long tooth profile of […]
The gear tooth surface obtained by virtual machining and the gear tooth surface actually processed by the machine tool are […]
There are three schemes for drum shape optimization modification of tooth profile, namely, the modification amount of driving wheel is […]
According to the virtual machining theory, the geometric model of spiral bevel gear is created. The tooth system of spiral […]
Figure 1 shows the influence curve of the pinion tooth width on the time-varying meshing force of the helical gear […]
The optimal modification scheme of the top broken line arc of the long tooth profile is the modification amount of […]
With the development of computer technology, the method of using virtual machining technology to create gear geometric model has been […]
For the dynamics of nonlinear helical gear system, the solid collision method, the finite element transient analysis method and the […]
The tooth profile of spiral bevel gear is a complex free-form surface. At present, its measurement is mainly carried out […]
The linear optimization modification scheme of long tooth profile addendum is the modification amount of driving gear 3 μ m. […]
As shown in the figure, the three-dimensional cloud diagram of contact stress of No. 0 unmodified, No. 1 optimization scheme […]
Figure 1 shows the influence curve of helix angle on the time-varying meshing force of the helical gear pair at […]
The correctness of research methods and theories needs to be verified by relevant experiments. The experiment is divided into two […]
As shown in the figure, the tooth surface load distribution of No. 0 unmodified, No. 1 optimization scheme and No. […]
The earlier gear cutting of spiral bevel gear was carried out on mechanical gear milling machine. The mechanical gear milling […]
Under the ideal oil lubricated meshing condition, the big and small gear teeth will be completely separated by the oil […]
According to the influence law of the impression shape on the internal excitation of the spiral bevel gear, a pair […]
The meshing impression shape of the spiral bevel gear is an important index to measure its meshing quality, which will […]
Meshing impact is another factor that produces vibration and noise in the process of hypoid gear transmission. It is caused […]
After obtaining the comprehensive meshing stiffness of spiral bevel gear, in order to obtain the stiffness excitation force curve of […]
When calculating the meshing stiffness of single tooth with finite element method, first extract the contact force resultant force of […]
Stiffness excitation is the phenomenon that the time-varying meshing stiffness of the gear produces the dynamic meshing force of the […]
(1) Gear profile optimization modification+tooth direction drum modification Figures 1, 2, 3, 4 and 5 respectively show the composite modification […]
(1) Influence of pressure angle on transmission error of helical gears Figure 1 shows the relationship curve between pressure angle […]
(1) Optimal modification of linear addendum with long tooth profile Figures 1, 2 and 3 respectively show the simultaneous long […]
After obtaining the cutting adjustment parameters and cutter head parameters of the large and small gears of spiral bevel gear, […]
Ideally, the meshing form of spur gear pair is shown in Figure 1. It can be seen that one end […]
(1) Selection of long and short modification methods Long modification refers to the repair and removal of the part from […]
Through the above contact characteristic control methods and contact area analysis methods, we can easily obtain the desired contact area […]
For helical gear pair transmission, the number of rotation cycles of the pinion is more than that of the big […]
The large number of studies have proved that dynamic excitation is the main cause of spur gear vibration, which is […]
It can be seen from the figure that with the increase of the inclination angle of the large and small […]
(1) Time-varying meshing stiffness Because the gear teeth will produce elastic deformation when the gear is engaged, and the gear […]
The spiral bevel gear processed by face hobbing adopts the principle of indirect generation method to ensure that the large […]
Under the ideal condition that all components in the gearbox except the helical gear are regarded as absolute rigid bodies […]
