Research status of gear hobbing abroad
According to the research results, the existing problem is to simplify the gear hobbing process in three-dimensional space to two-dimensional […]
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Determination of helical gear modification
There are many methods to modify the helical gear drum shape. At present, there are mainly the following two methods; […]
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Influence of helical gear modification on dynamic contact stress
The impact and vibration of helical gear will inevitably occur in the process of transmission meshing, which will increase the […]
Scientific
Determination of axial position of gear hob
The alignment of gear hob refers to the coincidence degree between the symmetry axis of any tooth (or groove) of […]
Scientific
Influence of cutting ratio of wheel blank on deformation of spur gear with different modulus
Ensure that the diameter of the spur gear is 3600mm, change the modulus of the spur gear to make it […]
Scientific
Second order superharmonic resonance response of helical gear drive
Figure 1 shows the influence curve of friction on the second-order superharmonic resonance. With the increase of friction, the vibration […]
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Research status of gear hobbing in China
Gear hobbing machine is widely used in automobile, machine tool, engineering machinery and other machinery manufacturing industries. In gear hobbing, […]
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Helical gear transmission considering tooth surface friction
The dynamic characteristics of helical gear transmission considering tooth surface friction are studied and further studied and discussed: (1) Due […]
Scientific
Variation law of equivalent stress and time in helical gear meshing process
As shown in the figure, the dynamic contact equivalent stress of helical gear and the history curve changing with time […]
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Nephogram of contact pressure distribution and contact state of helical gear
Nephogram of contact pressure during helical gear meshing: It can be seen from Figure 1 that the contact pressure is […]
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Control system of spiral bevel gear machining machine tool
In view of the above problems existing in the current spiral bevel gear machining and manufacturing, a new theory and […]
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Time varying contact line load model for spur gears
The load distribution rate of spur gear in the double tooth meshing area near the root of the tooth is […]
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Adjustment of installation angle of gear hob
During gear hobbing, the gear hob axis and workpiece axis must conform to a certain axis intersection angle. Therefore, the […]
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Analysis of time-varying contact line characteristics of helical gears
Helix angle is an important structural parameter of helical gear, and it is also the main factor causing time-varying contact […]
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Dynamic simulation and calculation of helical gear model with different support shaft stiffness
The simulation process of helical gear dynamic contact has been introduced in detail before. The mesh division is also divided […]
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The influence of the cutting proportion of the wheel blank on the deformation of spur gears with different diameters
By changing the thickness of spur gear split wheel blank and carrying out finite element analysis on spur gear blank […]
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Determination of the modification amount of involute helical gear
Local stress concentration is very easy to damage the normal operation of helical gear. Adopting the method of helical gear […]
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Development of gear processing machine tools in China
In the early 1950s, China’s gear machine tool manufacturing industry began to develop through the full introduction of the technology […]
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Dynamic characteristics of helical gear transmission considering tooth friction
The dynamic characteristics of the main influencing factors of helical gear vibration and noise are studied. Considering the dynamic characteristics […]
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Influence of helical gear accuracy grade on Meshing Impact
Helical gear accuracy mainly controls the transmission accuracy between helical gears during operation, such as transmission stability, instantaneous speed fluctuation, […]
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Cloud chart of equivalent stress distribution during helical gear meshing
Pressure nephogram during helical gear meshing: It can be seen from figures 1 to 4 that when two helical gears […]
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Mapping Law of gear hobbing machining accuracy
The mapping law between machining system error, gear hobbing principle error, tool error, machine tool vibration and gear machining accuracy […]
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Establishment of time-varying contact line load model for spur gears
The elastic potential energy u formula of spur gear teeth is written as: Where: ux – bending potential energy; un […]
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Selection of basic worm of gear hob
Gear hob is one of the most widely used high-efficiency gear machining tools. As shown in Figure 1, it is […]
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Effect of support shaft stiffness on dynamic contact of helical gear
In fact, the helical gear is installed on the support shaft. When the gear teeth transmit power through the support […]
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Algorithm verification of time-varying contact line model for helical gears
The provided helical gear parameters are substituted into the algorithm in this paper. The comparison of calculation results is shown […]
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Thickness and deformation of straight bevel gear blank
The simulation results show that the deformation of the split gear is related to the thickness. In order to determine […]
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Research on the mechanism of vibration and noise of spur gears
Figure 1 shows the meshing diagram of spur gear. Single tooth and double tooth meshing are carried out alternately. The […]
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Main frequency resonance response of helical gear transmission
Figure 1 shows the influence curve of helical gear tooth surface friction coefficient on dominant frequency resonance. It can be […]
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Tooth direction modification method of involute helical gear
In recent years, the academic circles have made great progress in the research of helical gear modification methods. The modification […]
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Helical gear transmission resonance considering tooth surface friction
Helical gear error and time-varying meshing stiffness and other parameter excitation have been considered as the main sources of helical […]
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Research status of spur gear transmission error
Gear error is another important excitation source of gear vibration and noise. The error is the difference between the actual […]
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Dynamic characteristics of helical gear transmission
At present, foreign researchers gradually realize that the influence of gear friction on the dynamic characteristics of transmission can not […]
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Equivalent stress nephogram of helical gear at different times
(1) Equivalent stress nephogram of helical gear at 0.075s, as shown in Figure 1. (2) The equivalent stress cloud of […]
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Structural optimization of milling cutter head of equal height spiral bevel gear
1. Single nail clamping structure The contour spiral bevel gear milling cutter head for machining contour spiral bevel gears is […]
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Influence of machine tool vibration on gear hobbing machining accuracy
Gear hobbing accounts for more than 90% of the gear forming process. In the cutting process of gear hobbing machine […]
Scientific
Influence of tool tooth thickness error and helix error on Gear Hobbing
The model is shown in the figure. The tooth thickness error of the tool in the axis direction will affect […]
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Load distribution and deformation of helical gear contact line considering tooth surface friction
High power gear transmission mainly adopts wide helical gear transmission, which has complex form and structure, large load and high […]
Scientific
Setting of basic parameters of helical gear
The basic parameters that determine the geometry of helical gears include the number of teeth Z and the normal pressure […]
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Mixed elastohydrodynamic lubrication model of helical gear tooth surface
The friction coefficient between two meshing tooth surfaces has an important influence on the magnitude of tooth surface friction, so […]
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Stress analysis of cylindrical gear teeth
Nominal torque T1: calculate the contact strength of cylindrical gear transmission. Generally, the power P (k, w) transmitted by driving […]
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Residual stress of typical wheel blank material of straight bevel gear
Aluminum alloy 7075-t7451 is selected as the material for splitting the wheel blank of straight bevel gear. This material is […]
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New method of hypoid gear design
According to the Gleason algorithm, the mathematical model of hypoid gear always has 16 independent equations, and its central axis […]
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Time varying contact line characteristics of helical gears
The influence curve of axial coincidence degree on contact line length calculated by this algorithm is shown in Figure 1. […]
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Cutting force and parameter optimization of spiral bevel gear NC milling machine
The research content provides a reference for improving the cutting efficiency of spiral bevel gear milling machine, reasonably selecting the […]
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Establishment of time-varying contact line model algorithm for helical gears
For helical gears, the whole coincidence degree is greater than 2, which means that at least 2 tooth pairs are […]
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Mechanism of vibration and noise of spur gears
The causes of spur gear vibration and noise are complex, and there are many sources. It has always been a […]
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Formation mechanism of residual height on tooth surface of spiral bevel gear
As shown in the figure, spiral bevel gear milling machines mostly use disk milling cutters, and multiple groups of blades […]
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Time varying contact line and time varying tooth surface friction in multi tooth meshing of helical gears
The time variation of contact wire is one of the important characteristics of helical gear transmission. The change of the […]
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Influence of backlash and stiffness of gear support shaft on dynamic contact stress of helical gear
The contact process of helical gear in the movement process is a highly nonlinear problem, and its contact strength is […]
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Calculation results and analysis of static contact of helical gear
Through the general post processor, we can view and analyze the solution results, observe various displacement, stress and other cloud […]
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Research status of spur gear tooth surface friction
In the early research, because the dynamic impact theoretical analysis and experimental analysis of tooth friction are also limited, the […]
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Dynamic excitation and loading mode of spur gear transmission
The dynamic excitation of spur gear transmission system is an important part of studying the dynamic characteristics of spur gears, […]
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Spur gear meshing impact
Scholars at home and abroad have also done a lot of research and Analysis on the meshing impact of gear […]
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Variation law of equivalent stress and time in helical gear meshing process
The variation law between the dynamic contact equivalent stress and time of helical gear is shown in the figure: It […]
Scientific
Influence of cutter profile error on Gear Hobbing
First, create the process model of cutting tool machining gear, as shown in the figure. Therefore, we create the following […]
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Influence of tool error on gear hobbing accuracy
When the gear hobbing machine processes the gear, the accuracy of the cutter has a great influence on the gear […]
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Dynamic contact analysis and tooth profile modification of helical gears
There are many methods about helical gear modification. Only the transient dynamic contact and tooth direction modification of helical gear […]
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Meshing deformation and meshing stiffness of helical gears
In the past 30 years, a large number of scholars have used finite element, experimental analysis and theoretical calculation to […]
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Finite element modeling of straight bevel gear blank with initial stress field
In order to achieve the effect of simulation, the initial stress of spur bevel gear blank material needs to be […]