Integral error model of helical gear transmission
The overall error curve of helical gear is a complete error curve of helical gear, which is formed by measuring […]
Scientific
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Machining principle and error of gear hobbing
With the progress of science and technology, the introduction of technology and the deepening of technological transformation, the processing technology […]
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Forging process of driven spiral bevel gear blank
The purpose of this paper is to simulate the forging process of the blank of the driven spiral bevel gear […]
Scientific
Expression of ease off modification tooth surface of hypoid gear pinion
According to the meshing theory and installation relationship of hyperboloid gear, the gear tooth surface is regarded as an imaginary […]
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Tooth surface vibration reduction of ease off modified hypoid gear
In order to improve the comprehensive transmission performance of automobile drive axle, the ease off modification hypoid gear tooth surface […]
Scientific
Analysis and calculation of helical gear after changing speed conditions
Increase the speed of helical gear from 25rad / s to 35rad / s, and keep the torque unchanged. Using […]
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Vibration reduction optimization of ease off modified hypoid gear
Hypoid gear is widely used in vehicle main reducer. With the development of spiral bevel gear towards high speed and […]
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Research on spur gear forging
The research on spur gear forging at home and abroad mainly focuses on the precision forging of spur gears. The […]
Scientific
Error of generating surface of gear hobbing hob
When machining and manufacturing gear hobs, there is an error between the generating surface of gear hobs and the theoretical […]
Scientific
Gear cutting processing of straight bevel gear split wheel blank
Before machining the straight bevel gear to split the wheel blank, first measure the flatness of the upper and lower […]
Scientific
Principle of helical gear profile modification
Because the coincidence degree of helical gear is not an integer, its meshing transmission process is alternating between single and […]
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Transmission error and meshing impact of Helical Gears Considering tooth surface friction
Transmission error is an important excitation that causes the vibration and noise of helical gears. It is a parameter that […]
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Digital simulation of cylindrical gear hobbing process
The basic research idea is: carry out digital simulation on the gear hobbing process of cylindrical gear, analyze the position […]
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Helical gear transmission considering tooth friction
(1) This paper breaks through the condition limitation of calculating the time-varying contact line length of helical gear multi tooth […]
Scientific
Equivalent stress nephogram of helical gear
(1) Equivalent stress nephogram of helical gear at 0.0025s It can be seen from Fig. 1 that the contact stress […]
Scientific
Time varying contact line load distribution of helical gears
The load distribution along the contact line is affected by the position and length of the helical gear contact line. […]
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Spiral bevel gear forging
Forging is a plastic forming processing method, which uses various pressure machines to exert pressure on the metal blank under […]
Scientific
Calculation of helical gear modification drum shape and determination of drum shape center
(1) Through analysis, it can be seen that there is no mechanism to determine the size of helical gear drum […]
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Common helical gear modification methods
Many scholars at home and abroad have put forward a variety of theories and methods for helical gear modification. At […]
Scientific
Classification of tangential and axial machining errors of gear hobbing
The machining error of gear is determined by the process error factors of machine tool, cutting tool, wheel blank and […]
Scientific
Machining technology and NC machining of straight bevel gear split gear blank cutting
According to the structural characteristics and the complexity of the tooth profile of the split straight bevel gear, the vertical […]
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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 […]
News
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 […]
Scientific
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 […]
Scientific
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 […]
Scientific
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 […]
Scientific
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 […]
Scientific
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 […]
Scientific
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 […]
Scientific
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 […]
Scientific
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, […]
Scientific
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 […]
Scientific
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 […]
Scientific
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 […]
Scientific
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 […]
Scientific
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 […]
Scientific
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 […]
News
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 […]
Scientific
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 […]
Scientific
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 […]
News
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 […]
Scientific
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 […]
Scientific
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 […]