In the early research, due to the limitation of computational resources and methods, the time-varying meshing stiffness of gears can […]
The meshing stiffness of gears refers to the ability of gear teeth to resist elastic deformation under the action of
Figure a) shows the influence of load torque T2 on the rattling state of gears. It can be seen from
In the past research on the dynamics of gear system with pitting corrosion fault, the main concern is that the
The ratio of the amplitude Kr to the average value K0 in the formula is defined as the amplitude coefficient
The variation law of gear vibration state with the eccentricity of reducer variable speed integrated gear is studied. Figure a)
Figure a) shows the influence of static error amplitude Er on gear slapping state. With the increase of static transfer
Speed is one of the external load parameters in gear system. Under theoretical conditions, gear slapping behavior will be more
We discuss the dynamic characteristics of the dynamic response of gears in time domain and frequency domain in three different
Because the stiffness excitation and error excitation only select the first harmonic, the r = 1 of SSI = 0
Since the gear tooth is simplified as a cantilever beam with variable cross-section, the stress distribution of the gear tooth
The transmission ratio of the reducer variable speed integrated gear is as follows: Where ε is the eccentricity. The expressions
In the system of equations Si, the coefficient Zi of the steady-state response q is the unknown quantity to be
The sensitivity of parameters is very important to the dynamic design and optimization of gear system. There are three commonly
In addition to the static transmission error, time-varying meshing stiffness and other internal excitation will affect the vibration of the
Figure a) shows the influence of the average value of gear meshing stiffness K0 on the response peak to peak
The static transmission error is one of the main excitations in gear transmission. It can be seen from the figure
The eccentricity ε determines the variation range of the transmission ratio of the reducer variable speed integrated gear. The larger
When the diagram shows the dynamic response peak to peak value with the input speed change law curve. When the
From the basic parameters, the time-domain response curve of the reducer variable speed integrated gear obtained by harmonic balance method
Considering the harmonic balance between the left and right sides of the formula, the angular acceleration term on the right
(1) Eccentricity, input speed and error amplitude have great influence on the rattle state of the gear pair. With the
When calculating the sensitivity of each parameter, other parameters remain unchanged. According to the data of noncircular gears in table
It can be seen from the formula that the harmonic components of ω C and N ω e (n is
In the formula, although the meanings of R2 (T) cos α inside and outside the brackets are different, the results
The tooth meshing error produced in the process of gear machining and installation is a kind of displacement type dynamic
The influence of stiffness excitation is directly reflected in the time-varying coefficient of elastic force term in the dynamic model
The circular gear mainly includes two kinds of internal excitation stiffness excitation and error excitation. As the power transmission of
Gear backlash is the amount of circumferential shaking of another gear when one gear is fixed, which is calculated by
The knocking dynamics of the vehicle transmission includes two aspects: one is the knocking in neutral, i.e. the knocking produced
The rattling force of gear is another important source of vibration and noise of gear. It produces rattling sound of
Transmission error is the main excitation of gear vibration. It combines the influence of meshing time-varying stiffness and manufacturing error,
To analyze the influence of gear displacement coefficient, it should be divided into equal displacement, unequal positive displacement and unequal
Figure 1 shows the variation trend of sliding rate with gear modulus in standard drives with the number of teeth
Double gear is widely used in gear boxes. In general transmission, it is not required to align the teeth.However, this
Electric traction shearer is a multi-motor driven shearer with transverse arrangement of motors and normal speed of mining adjusted in
The development of gear machinery manufacturing industry in the world can be divided into three stages according to the characteristics
As far as the gear in place measurement is concerned, the common problem is how to accurately determine the position
The diameter of the oversize gear is large, the number of teeth is large, and the inertia is large. If
The manufacturing technology of face gear is based on their manufacturing principles, which can be divided into three categories: Based
As the core part of most machines, the performance of gears directly determines the degree of mechanical excellence. In the
In addition to the lubrication of gears and bearings, ATF is also used for the lubrication and cooling of hydraulic
As human history enters the 21st century, it has become a consensus to build a digital earth. Manufacturing informatization brings
1. Spraying technology of superfine composite materials In recent years, Chinese and Japanese companies have studied and applied the spraying
After the founding of new China, especially since the reform and opening up, the technology of gear transmission has made
The machining method of the eccentric modification gear generated by the modification method is the same as that of the
Molybdenum disulfide (MoS2), as a high quality solid lubricating material, has good antifriction, antiwear and bearing capacity. Molybdenum disulfide (MoS2)
The transmission between the eccentric gears will produce the change of backlash. Therefore, when calculating the coefficient of deflection of
The application of manganese phosphate conversion coating technology in improving the surface strength of transmission parts first appeared in improving
Gear is an important part to transmit power in mechanical devices. The Japanese mechanical society has carried out systematic investigation
As the key component of transmission system, gear is not only the transmission power and energy, but also the inheritance
For the measurement of large gears, there are many shortcomings in the off position measurement and in position measurement, which
Face gear drive is a kind of transmission mechanism that the involute cylindrical gear (small wheel) and the bevel gear
For the gears whose coincidence degree is between (1 ~ 2), the meshing process is always in the alternating meshing
According to the definition of gear stiffness: It can be seen that the deformation of gear teeth has a linear
With the rapid development of information technology and material technology, many new technological achievements have appeared in the field of
（1） Cylindrical gear machining （2） Worm pair machining （3） Bevel gear machining （4） Special gear processing （5） Gear machining method
With the rapid development of information technology and material technology, many new technological achievements have appeared in the field of
For a long time, short life, poor reliability and heavy structure have become the three major problems restricting the development
For a long time, short life, poor reliability and heavy structure have become the three major problems restricting the development
