Torsional vibration of bevel gear transmission
There are two kinds of torsional vibration of bevel gear transmission system: low-frequency torsional vibration and high-frequency torsional vibration. Low […]
There are two kinds of torsional vibration of bevel gear transmission system: low-frequency torsional vibration and high-frequency torsional vibration. Low […]
In the dynamic analysis of the hypoid gear, the difference from the static analysis is that the input end of
The dynamic model of bevel gear transmission contains various geometric parameters, physical parameters and load parameters. The geometric parameters include
The torsional vibration analysis model only considers the torsional vibration of the system. In the vibration analysis of the gear
1.Analysis type First, the static nonlinear meshing analysis is carried out. In the analysis step, the class’ static stress /
The installation deviation of hypoid gears is mainly divided into four categories. The definition of installation deviation direction is shown
The dynamic excitation caused by the time-varying characteristics of meshing stiffness during gear meshing is called stiffness dynamic excitation of
Since the early 1970s, people have begun to use the finite element method to calculate the elastic deformation and tooth
Different angular velocities are applied to the meshing model of hypoid gears, and there is no concept of velocity in
Taking straight teeth as an example, the basic concept and properties of gear meshing stiffness are explained. Tooth meshing stiffness
Load different resistance moments on the output end of the large gear, and the corresponding transmission error is shown in
Gear mesh generation strategy is directly related to the calculation speed and accuracy. In order to determine the finite element
The effect of the installation deviation Gama of the cross angle of the hypoid gear on the fatigue stress of
The second-order error of logarithmic spiral bevel gear can be understood as the longitudinal and transverse drum shape error of
The influence range of each installation deviation on fatigue parameters is shown in the figure. According to the order of
As shown in Fig. 1, the influence of the installation deviation V of the offset distance of the hypoid gear
In the actual measurement of logarithmic spiral bevel gear, there is an offset in the measurement error. This offset can
Difference surface is a widely used surface error analysis tool. It was initially applied to the error discrimination of first-order
According to the requirements of the national driving axle fatigue test standard qc/t 533-1999, the test bench as shown in
The tooth surface data point coordinates of logarithmic spiral bevel gear are collected by 3D laser scanner, and the tooth
The variation of the maximum stress of the pinion root with the installation deviation is shown in Figure 1 and
The formation process of the tooth surface of the logarithmic spiral bevel gear can be regarded as that when the
An important goal of hypoid gear design is to optimize the performance of gear pair installation deviation. By measuring the
There are many ways to express the tooth surface equation of logarithmic spiral bevel gear, including explicit, implicit, parameter and
As shown in Figure 1, when the axial installation position h of the hypoid gear pinion changes, the change trend
Tooth surface reconstruction is the core part of the whole reverse engineering technology. The basic idea of logarithmic spiral bevel
As shown in Figure 1, when the deviation g of the big axle of the hypoid gear changes towards the
In order to verify the accuracy of the established finite element model, the tooth root bending stress in the meshing
In China, there are few studies on the bending stress of the hypoid tooth root of the drive axle, mainly
Curve is the basis of building surface. In reverse engineering, the commonly used curve reconstruction method is to interpolate the
As shown in Figure 1, the change diagram of meshing footprint during the ideal meshing process of hypoid gear is
Submit the established model to abaqus/standard solver, and finally get the finite element analysis results, as shown in Figure 1
Spiral bevel gear modeling is determined by spiral bevel gear calculation software based on the basic parameters of the tooth
According to the function of the mechanism in the seedling picking cycle, the whole movement is divided into four processes:
The research object is a light truck drive axle, which is mainly composed of main reducer, axle housing, axle shaft,
On the basis of clarifying that the non-circular gear planetary gear train mechanism can be used as the actuator of
Through ABAQUS loading characteristic analysis, the contact spots on the convex surface of the big wheel are compared with the
Parameters Offset distance E/mm Axis intersection angle σ / (°) Number of headers Z0 Number of teeth Z Initial installation
Import the hypoid gear coordinates into CATIA, use the surface function to get the gear surface of the hypoid gear,
For the noncircular gear planetary gear train mechanism shown in Figure 1, the noncircular closed track of the end point
Table 1 shows the basic parameters of hypoid gears, and table 2 shows the basic parameters of large and small
The schematic diagram of the seedling taking mechanism of non-circular gear planetary gear train is shown in the figure. The
Theoretical tooth surface equation of spiral bevel gear pinion spiral bevel gear is processed on milling machine. The shaking table
In generating machining, the tooth surface equation is still statically indeterminate through the formula, and the incremental angle of the
1. Reverse engineering inspection process Firstly, the digital model of the specified workpiece is obtained through the three-dimensional optical scanning
Ollicon hypoid gear processing machine tool (as shown in figure (a)) is mainly composed of cutting cutter head, cutter tilt
1. Small module gear processing method and its advantages and disadvantages At present, the common processing methods of small module
1. Create global variable equation Click the command “Σ equation” in the “tools” menu of SolidWorks software, and use the
Oricon hypoid gears are machined by end face hobbing. Figure 1 shows the gear cutting principle of the end face
1. Data preprocessing Because the point cloud data of the involute cylindrical spur gear measured by the three coordinate machine
(1) Reverse engineering modeling technology construction curve The principle is to use as few control points as possible under the
As we all know, the tooth surface of spiral bevel gear is a very complex spatial surface. Using coordinate measuring
According to the linear fatigue cumulative damage theory Miner theory, the stress amplitude of each stress level will cause certain
1. Division of nodes on tooth surface The axis plane coordinate system is established based on the arc tooth surface
Spiral bevel gears have the advantages of stable transmission ratio, strong bearing capacity, low transmission noise and long service life,
1. Verification of tooth profile shape in reverse engineering software The figure shows the tooth profile in the reverse engineering
There are mainly two kinds of hypoid gears for axle: Gleason circular arc involute teeth and cycloid contour teeth, which
Taking involute spur gear as an example, this paper explains the mapping, calculation and verification of involute spur gear. In
When the nominal stress method is used to calculate the contact fatigue of spur gear of reducer, it is mainly
Based on TCA technology, the corresponding high-speed and heavy-duty spiral bevel gear surface impressions and transmission error curves before and