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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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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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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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
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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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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
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Calculation of geometric parameters of Gleason hypoid gear
The calculation method of geometric parameters of hypoid gear formulated by Gleason company is to preliminarily preset the initial value
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Preliminary determination of pitch circle radius of pinion of hypoid gear pair
In Gleason algorithm, the following calculation formula is recommended for the helix angle of hypoid gear and pinion: Generally, the
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Causes of helical gear tooth direction modification
During the operation of the machine, it is subjected to external load or self load. Some of these loads are
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Boundary conditions imposed by material parameters of helical gears
Both helical gear 1 and helical gear 2 are linear elastic materials. The young’s modulus of helical gear 1 is
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Principle analysis of the influence of tool error on gear hobbing accuracy
As shown in the figure, it is the schematic diagram of error transmission in the machining process on the gear
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Basic parameter relations of involute helical gears
The tooth trend of the involute helical gear is the helix angle, and the normal tooth profile is in the
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Determination of initial value of pitch circle radius of large gear of hypoid gear pair
The pitch diameter D2 of the large gear of the hypoid gear pair is directly related to the size of
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Study on the load distribution in the tooth direction of involute helical gear
Uneven load distribution of helical gear is a common engineering problem, which should be considered as a key issue in
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Modal analysis and solution of helical gear
According to the set boundary conditions, the helical gear is solved and analyzed, and the 20th order modal value of
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Establishment of finite element analysis model for helical gears
The geometric model of helical gear is established and assembled by using pro/e software. Here, it is agreed that the
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Principle and error analysis of gear hobbing
The machining principle of gear hobbing is shown in Figure 1. Theoretically, during gear hobbing, the gear hobbing hob meshes
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Oil film at contact position of concave bionic cylindrical gear
Using five basic equations and MATLAB software for numerical calculation, select six contact points in the direction of gear tooth
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Initial design conditions of Gleason hypoid gear pair
When calculating the geometric parameters of hypoid gear, Gleason company specifies detailed steps, and each step has a fixed formula.
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Evaluation of tooth surface roughness of spiral bevel gear
Different gear processing methods form the micro complex morphological characteristics of spiral bevel gear tooth surface, which brings difficulties to
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Calculation results and analysis of dynamic contact of helical gear
Figure 1-2 shows the maximum equivalent stress nephogram of the main and driven helical gears, and figure 3-13 shows the
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Ingenious setting of helical gear boundary conditions and calculation of partial order
(1) Set contact pairs For the convenience of analysis and calculation, the helical gear profile is selected through the namedselection
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Contact stress of helical gear in automobile transmission
Due to the complex contact problem of helical gear, further research is needed in the following aspects: ① Fully parametric
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Stress analysis of straight bevel gear in z direction
When different processing methods are selected, the z-direction stress nephogram of the upper surface of straight bevel gear blank is
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Gear tooth profile modification
In recent years, many scholars have done a lot of research on gear modification, and there are many modification methods
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Formation of tooth profile surface of spur helical gear
As shown in the figure, the forming process of the tooth profile surface of the involute straight tooth spur helical
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Limit characteristics of hypoid gear meshing
The induced normal curvature of the two conjugate surfaces is the difference between the normal curvature of the two surfaces,
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Finite element simulation analysis of optimization scheme of spur gear
As shown in Figure 1, the distribution of blank velocity field in the forming process after the optimization of spur
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Analysis steps of dynamic contact stress of helical gear
1. Establishment of dynamic contact model and meshing The solid model is imported into HyperMesh for meshing. The mesh model
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Simplification of helical gear model
Due to the large amount of three-dimensional finite element simulation calculation of helical gear, considering the factors such as computer
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Contour spiral bevel gear cutter
The contour spiral bevel gear milling cutter bar is mostly in the shape of prism, and the cross section in
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Equivalent stress analysis of metal forming force of spur gear
As shown in Figure 1, the second-order effect force field of scheme is shown. As shown in figure a, in
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Principle of helical gear tooth profile modification
The meshing process of helical gear is affected not only by the distribution of tooth profile load, but also by
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Oil film at contact position of smooth cylindrical gear
Using five basic equations and MATLAB software for numerical calculation, select six contact points in the direction of gear tooth
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Dynamic contact stress of helical gears with different backlash
According to the structural parameters of the fourth gear helical gear pair of a heavy truck transmission studied, the dynamic
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Induced normal curvature of hypoid gear pair nodes
In the meshing transmission process of hypoid gear pair, the relative speed of the two gear tooth surfaces at node
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The y-direction deformation of straight bevel gears with different thickness
When the thickness of straight bevel gear blank is 90mm, the y-direction displacement nephogram of straight bevel gear blank with
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Equal height spiral bevel gear milling cutter head
As shown in Figure 1, it is the three-dimensional model of the cutter head established on UG. The contour spiral
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Establishment of hypoid gear blank
The three-dimensional modeling of hypoid gear is based on the establishment of mathematical model. Firstly, the basic curve and gear
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Analysis of metal forming force stroke load curve and die wear of spur gear
The metal forming force of spur gear is the main consideration basis for determining the die size and structure and
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Stress analysis of straight bevel gear in y direction
When two different processing methods are selected, the stress nephogram in Y direction on the upper surface of spur bevel
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Status of spur gear finite element analysis in China
K. Lwang and h.s.cheng used the finite element method to analyze the size and distribution of tooth body temperature of
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Three dimensional contact stress of concave cylindrical gear
1. Equivalent stress analysis of three-dimensional contact of concave cylindrical gear After the calculation, the equivalent stress of the contact
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Additional torque in the processing of spur gear split wheel blank
It can be seen from the cross-section of the straight shaft that the cutting speed of the straight shaft tends
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Kinematic parameters of hypoid gear nodes
Gleason’s idea of designing hypoid gear pair is to calculate the contact parameters of hypoid gear pair. When studying the
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The x-direction deformation of straight bevel gear blank with different thickness
When the thickness of spur bevel gear blank is 90mm, the displacement nephogram in X direction of spur bevel gear
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Analysis on forging load of equal height spiral bevel gear blank
The service life of die and the selection of screw press are closely related to the forming load. Therefore, it
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Equivalent stress analysis of equal height spiral bevel gear forging
The equivalent stress in the forging process of equal height spiral bevel gear is an important analysis index, which affects
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Solid generation of helical gears
① Generation of single helical tooth Using “curved surface → swept”, select the gear profile as the swept section. Since
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Analysis of metal forming velocity field of spur gear
As shown in Figure 1, the velocity field distribution in the blank forming process of scheme 1 is shown. As
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Generation of helical gear profile curve and helix
To establish a curve in CAD, we first need to establish the parameter equation of the curve. The involute equation
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Stress analysis of straight bevel gear in X direction
Taking the 80mm thick straight bevel gear blank model as an example, the x-direction stress nephogram of the upper surface
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Three dimensional contact boundary of concave cylindrical gear
Keep the contact boundary condition with smooth gear consistent with the loading setting treatment method, restrict the degrees of freedom
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Machining deformation of split straight bevel gear
The finite element model simulation and mathematical model calculation of the deformation in the machining process of split straight bevel
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Analysis of additional torque in the process of bevel gear split blank machining
Before bevel gear cutting, the residual stress in the material is evenly distributed and balanced along the thickness direction of