Research status of helical gear modification in China and abroad
The purpose of gear modification is to make the pressure distribution on the tooth surface as uniform as possible after […]
The purpose of gear modification is to make the pressure distribution on the tooth surface as uniform as possible after […]
In the field of scientific research and engineering technology, numerical simulation is a basic research method that pays equal attention […]
Automotive automatic transmission lubricating oil (ATF) not only meets the lubrication of automotive helical gears and bearings, but also undertakes […]
In order to study the bending stress of helical gear tooth root, the test will be measured under three working […]
MCL ⁃ 1A helical gear wear testing machine is used for the experiment, which is driven by the spindle motor, […]
After the transmission test bench is assembled, the contact spot detection experiment of helical gear is carried out below. Because […]
According to the theoretical knowledge of orthogonal helical gear, when the helical gear and helical cylindrical gear mesh, the two […]
Before hobbing helical gear, first, prepare the combined fixture and clamp it correctly according to the relative position of each […]
In order to meet the requirements of hobbing helical gear on the gear hobbing machine, the tooling fixture is designed […]
Before the solid modeling of helical gear in Pro/E software environment, firstly, the coordinates of discrete data points calculated in […]
Due to the complexity of face gear tooth surface, it is very difficult to create a complete helical gear model […]
When the helical gear meshes with the tool, the speed of the former at the contact point is zero. At […]
When deriving the helical gear equation, the main parameters of the tool need to be determined are: normal surface modulus: […]
In recent years, with the continuous research in the field of face gear, according to the axis relationship of transmission […]
The feed motion of hobbing helical gear is a helix, which can be divided into the vertical motion VZ of […]
The helical gear is divided into m slice helical gears along the tooth width direction AA ‘, the M slice […]
Since the theoretical model does not carry out finite element modeling on the box, and the effective value of vibration […]
Take the modification amount of helical gear profile CA = 30 μ m. The helical gear profile modification length La […]
Zhang Liang et al. Proposed a calculation method for the position and length of helical gear meshing line. Because this […]
In helical gear transmission system, internal excitation such as stiffness excitation and error excitation of helical gear is an important […]
The helical gear tooth direction modification length Lc = 10mm, and the helical gear tooth direction modification amount CC is […]
On the basis of considering the nonlinear coupling excitation of stiffness and error, without considering the tooth direction modification of […]
The dynamic equation of helical gear system shown in the following formula is established by finite element method: Where m […]
Figure 1 shows that the tooth profile modification length Lc = 10mm and the tooth profile modification amount CC are […]
The strain of helical gear forging is different under different blank temperature. Figure 1 shows the strain distribution of blank […]
In order to study the influence of different tooth profile modification amount and different modification length on the stiffness and […]
Fig. 1 shows the blank flow velocity field under different pressing amounts. The velocity field of helical gear die forging […]
The die forging process of helical gear studied adopts closed die forging process, which is divided into two processes: blanking […]
According to the operating conditions of high-speed railway traction gear transmission system, different experimental conditions are designed and steady-state experiments […]
According to the interference diagram of hobbing helical gear and the change of width parameters of helical gear and length […]
As required, the helical gear hobbing take the modulus of 2.5mm as an example for solid modeling. Using the designed […]
(1) Undercutting theory of helical gears When the face gear engages with the tool, the speed of the former at […]
According to Newton’s second law of motion and D’Alembert’s principle, an 8-DOF torsional vibration and translational vibration coupling dynamic model […]
The above single pair of tooth stiffness algorithm is used to calculate the comprehensive meshing stiffness of helical gears with […]
For helical gear system, generally, the total coincidence degree is greater than 2, that is, at least two tooth pairs […]
The noise generated by structural vibration is an important noise source in helical gear system. In the design stage of […]
Gear transmission is the most important and widely used mechanical transmission device, which is widely used in machinery, transportation, chemical […]
Using the parametric design of helical gear in Chapter 2, a helical gear with the same modulus as helical cylindrical […]
In the parametric design of involute helical cylindrical gear, the meshing motion simulation of helical cylindrical gear and helical surface […]
When hobbing helical gear, first check the correctness of fixture installation, the accuracy of tool setting and the adjustment of […]
(1) Outer diameter of helical gear hob The outer diameter of helical gear hob not only affects the stability of […]
Helical gear hob is one of the most widely used high-efficiency tools. Gears with any number of teeth with the […]
Gear hobbing belongs to the generating method, and its principle is equivalent to the meshing transmission of a pair of […]
Before deriving the equation of helical gear, the meshing equation is obtained first. The process of machining helical gear is […]
When the generating method is used to process helical gear, the main parameters are determined first: the rotation direction of […]
In order to verify the accuracy and rapidity of the method in this paper, the same gear parameters are used […]
When the helical gear is an ideal tooth profile, assuming that there is no backlash between the gear pairs and […]
The defects in the forging process of helical gear are shown in the figure. In the process of helical gear […]
For the research of traditional helical gear forging process, scholars and researchers at home and abroad mainly focus on the […]
The helical gear can be regarded as a sheet helical gear. The helical gear is divided into m sheet helical […]
The modification amount of helical gear profile CA = 30 μ m. The helical gear profile modification length La = […]
Because the load of gear transmission system fluctuates greatly in the alternating area of tooth number, it will cause vibration […]
The mentioned feature line family is also of great significance to study the machining principle of gear profile, because any […]
Diagramming the imaginary circle diameter DPT of helical gear measuring ball The figure is a diagram of the imaginary circle […]
The figure shows the geometric relationship of the measuring ball in the alveolar. The N-N section is the normal section […]
It is known that the parameter of an external cylindrical helical gear is Mn = 5, α n= 20 °, […]
In the manufacture, inspection and design of gears, the span of measuring ball is widely used to measure the tooth […]
The following equation can be obtained from the geometric knowledge of involute gear: Where, α T is the end face […]
The measurement can be divided into two cases: the measurement of the profile error of the end face on the […]
Three dimensional crack models at different positions are established on the helical gear, and the stress intensity factor and J-integral […]