Research on Dynamic Characteristics of Involute Spur Gear Drive System
Vibration characteristics of two-stage fixed-shaft gear drive system and single-stage planetary gear drive system were tested, and the correctness of […]
Vibration characteristics of two-stage fixed-shaft gear drive system and single-stage planetary gear drive system were tested, and the correctness of […]
The bearings and gears are simplified as concentrated mass points and the rolling bearings are simplified as isotropic elastic supports.A […]
1.The cut-off frequency of low-pass filtering for strain test data is 3kHz of sampling frequency of dynamic strain gauge. 2.As […]
According to the test results of torsional shear strain of drive shaft, the torsional shear stress is calculated by formula […]
The transverse displacement test principle of the drive shaft is shown in the figure.O-point is the center position of the […]
According to the test results of transverse vibration displacement of transmission, the displacement of axle in test direction is calculated […]
For acceleration, the main reasons for errors between simulation results and test results are as follows: 1.The parameters such as […]
Torsional angular acceleration of gears 1 and 4 can be obtained by substituting acceleration test results of each gear into […]
1.The acceleration test signal is filtered with low-pass filter whose cut-off frequency is 10kHz, the highest response frequency of the […]
If there is tooth profile modification, the dynamic boundary condition of the modification area should be added on the basis […]
In order to obtain the dynamic engagement stiffness in the process of gear transmission, besides determining the engagement positions, the […]
Abroad, it is first pointed out that the load of the gear changes in a stepped manner. This method can […]
The experimental research shows that the gear transmission system shows obvious non-linear vibration characteristics, and the traditional linear model can […]
The engagement position of individual gear teeth during gear transmission can be determined by analysis.In order to ensure the continuity […]
The engagement stiffness of the gear pair is calculated by applying the rotating speed of 2000r / min on the […]
Most gear dynamic models assume that the meshing force is evenly distributed along the tooth width direction, but during actual […]
Gear modification is a key technology to reduce vibration, noise and improve reliability of gear transmission system.Since the tooth profile […]
The engagement state of the tooth surface can be determined by the formula at any time during the transmission process.From […]
It can be seen from the analysis that the dynamic boundary conditions α B (T) and the dynamic boundary conditions […]
The three-dimensional solid model of involute spur gear drive is shown in the figure, and the following assumptions are used […]
During gear transmission, changes in center distance cause changes in the direction of the engagement line, resulting in the actual […]
According to the method used in establishing dynamic model, the dynamic model of gear transmission system can be divided into […]
The experimental study on gear transmission system can repeat the same test condition several times, thus helping researchers to find […]
For involute spur fixed-shaft gear drive and planetary gear drive respectively, a nonlinear dynamic model of yaw-torsion coupling was established […]
In fact, the engagement parameters such as engagement angle, clearance and time-varying rigidity of gears are affected to some extent […]
For involute spur gear drive and planetary gear drive, the yaw-torsion coupling non-linear dynamic model including the dynamic changes of […]
(1) Nonlinear dynamic model of yaw-torsion coupling of involute spur gear drive For involute spur fixed-shaft gear drive and planetary […]
Nonlinear factors such as backlash and time-varying meshing stiffness inevitably exist in gear meshing process, which belongs to the research […]
Before 1950s, gear dynamics was based on impact theory, and meshing impact was used as the basis to describe and […]
The figure shows the distribution cloud of the tooth surface contact temperature on the lubricant viscosity and the tooth side […]
The figure shows the distribution cloud of the tooth contact temperature in the clearance plane between the torque and the […]
The figure shows torque T=10 N_m for four different lubrication states and oil viscosity 0=0.033At Pa_s, the distribution cloud of […]
The figure shows a cloud diagram of the temperature change of the tooth contact in the plane of the rotational […]
The figure shows the backlash Jn=0 mm and the lubricant viscosity 0=under 4 different lubrication conditions.0.033At Pa_s, a cloud diagram […]
The figure shows the backlash Jn=0 mm and the lubricant viscosity 0=under 4 different lubrication conditions.0.033At Pa_s, a cloud diagram […]
The main and driven gear materials in the gear temperature measuring test stand are constantan and 40Cr steel respectively. In […]
According to the accurate modeling idea of spur gear pair, the meshing stiffness calculation can be calculated by the inductive […]
Gear transmission system mainly has 4 different lubrication states, including elastohydrodynamic lubrication, mixed lubrication, boundary lubrication and dry friction.The friction […]
The profile shape of standard involute gears generally consists of two sections, i.e. transition rounded curve AB and involute curve […]
According to the engagement principle of involute spur gear, when a pair of involute profiles engage and drive, any engagement […]
In mechanical transmission system, gear transmission system is the most widely used in power and motion transmission devices.Time-varying meshing stiffness […]
During gear meshing, the tooth contact temperature and the instantaneous tooth surface temperature change in real time, which can be […]
Tooth surface instantaneous temperature is the instantaneous high temperature generated by contact points during gear meshing, which is mainly distributed […]
As shown in Fig. 1, spur gear shape grinding is to trim the wheel shape to the desired profile and […]
Forming grinding of spur gears is to trim the grinding wheel into an outer profile exactly the same as the […]
1.Obtaining Basic Gear Parameters There are many gear parameters and there are certain connections among them. The most important one […]
Gear is one of the most important parts in modern industrial production. In mass production of gears, on-line measurement and […]
The experimental results of ZHY gear only verify the correctness of the calculation method of tooth contact temperature under EHL […]
Gears are widely used in mechanical transmission. Due to the existence of tooth friction, the tooth contact temperature of the […]
The ratio of the relative tangential speed of the gear pair between the tooth surfaces at the meshing point and […]
Shot peening is an important key link in gear production and manufacturing. When the steel shot repeatedly impacts the tooth […]
At present, the forging process of straight bevel gear mainly includes the following “two fire two forging” and “one fire […]
Geometric dimension calculation of standard spur gear Name Code Calculation formula Tooth shape angle α 20 ° for standard gear […]
Names of gear parts 1.Cogging: the space between two adjacent cogs on a gear. 2.Addendum circle: the circle at the […]
Comparison of spur gear and helical gear in gear reducer 1.It is difficult and uneconomical to make and assemble a […]
This section will introduce the method of parametric creation of spur gears. The process of parametric creation of gears is […]
In the process of gear transmission and meshing, there are many reasons that affect the vibration of gear, including large […]
In gear processing, we often use the tooth profile template when checking the tooth profile. In the past, in this […]
Gear transmission is one of the most important mechanical transmission. Gear parts have the advantages of high transmission efficiency, stable […]
Spur gears are among the most common types of gears used in various mechanical systems due to their simplicity and […]