Experimental results of dynamic characteristics of helical gear transmission system
Since the theoretical model does not carry out finite element modeling on the box, and the effective value of vibration […]
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Edge trimming of precision forged spiral bevel gear
According to the characteristics of the forging process, the tooth profile of the spiral bevel gear is trimmed, which is
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System dynamic response of synthesizing helical gear profile modification and tooth direction modification
Take the modification amount of helical gear profile CA = 30 μ m. The helical gear profile modification length La
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Improved algorithm for position and length of helical gear meshing line
Zhang Liang et al. Proposed a calculation method for the position and length of helical gear meshing line. Because this
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Establishment of three-dimensional model of cold precision forging spiral bevel gear blank
In actual processing, forging blanks are mostly formed by pre forging. First, the blank is pre forged into a blank
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Ease off surface synthesis of spiral bevel gears
Spiral bevel gear pair conjugate pinion tooth surface Σ 1 modification, in the field of calculation point m, it is
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The dynamic response of the system considering only the tooth profile modification of helical gear
The helical gear tooth direction modification length Lc = 10mm, and the helical gear tooth direction modification amount CC is
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The system dynamic response of helical gear profile modification only is considered
On the basis of considering the nonlinear coupling excitation of stiffness and error, without considering the tooth direction modification of
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Friction coefficient and meshing efficiency of spiral bevel gears
The mixed lubrication model is composed of basic equations, Reynolds equation is composed of oil film equation, density equation, viscosity
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Dynamic model of helical gear transmission system
The dynamic equation of helical gear system shown in the following formula is established by finite element method: Where m
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Only the influence of tooth profile modification parameters on the stiffness and transmission error of helical gear is considered
Figure 1 shows that the tooth profile modification length Lc = 10mm and the tooth profile modification amount CC are
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Empirical formula of friction coefficient of spiral bevel gear
Benedict and Kelley studied the instantaneous contact friction coefficient of spur gears through the gear test bench, and studied the
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Only the influence of tooth profile modification parameters on helical gear stiffness and transmission error is considered
In order to study the influence of different tooth profile modification amount and different modification length on the stiffness and
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Solution to forging folding defect of transmission second shaft gear
The reason of gear forging folding is that the metal flow is not smooth during final forging, so reducing the
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Trajectory analysis of the transplanting mechanism of the differential eccentric gear train
The transplanting mechanism can be regarded as a two-bar manipulator. The positive and negative planetary gears in the eccentric gear
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Angular relationship of differential eccentric gear train
Place the eccentric fixed shaft gear train in the gear box (planet carrier), and the center wheel 1 rotates in
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Angular relationship of fixed shaft eccentric gear train
The unequal model solution of a pair of fixed shaft eccentric gears is extended to the fixed shaft gear train.
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Formulation of forming process scheme for spur gear
The external teeth of the part are spur gears and the internal teeth are involute spline teeth. Three forming process
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Numerical solution of differential eccentric gear based on unequal division model
According to the above model, the actual rotation angle of passive eccentric gear φ The numerical solution steps of 2
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Interpolation mechanism of differential eccentric gear system based on unequal division model
Two identical standard involute circular gears are installed eccentrically at their respective axes O1 and O2 in the same phase,
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Design example and test of eccentric displacement gear
According to the above tooth profile generation method, the tooth profile calculation software of eccentric modified gear is designed in
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Solution of grinding crack of 20CrMnTi carburized gear
During grinding, a large number of regularly arranged gear grinding cracks often appear on the surface basically perpendicular to the
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Transformation of space coordinate and normal vector of theoretical tooth surface of spiral bevel gear
In order to measure the profile error of spiral bevel gear on machine, the spatial coordinates and normal vector parameters
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Calculation of discrete point coordinates and normal vector of theoretical tooth surface of spiral bevel gear
Based on the gear meshing principle and the gear cutting principle of spiral bevel gear large wheel, the tooth surface
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Design of eccentric modified gear
The machining method of the eccentric modified gear generated by the modification method is the same as that of elliptical
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Crack analysis of aviation fuel pump gear
The distribution of gear cracks is shown in Fig. 1 and Fig. 2. Carry out magnetic particle flaw detection on
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Transmission principle of eccentric gear and eccentric displacement gear
The transmission between eccentric gears will produce backlash changes. Therefore, when calculating the displacement coefficient of eccentric modified gear in
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Kinematic model of eccentric gear noncircular gear planetary transplanting mechanism
1. Analysis of transmission angular displacement of eccentric gear and conjugate noncircular gear The initial position of the five gear
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Prospect of ball gear manufacturing technology
1. Five axis NC machining Five axis NC machining is a technology with high technical content and the widest machining
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Manufacturing technology and equipment of ball gear
In the available literature, the manufacturing technology of ball gear pair explored can be summarized as casting molding, forming processing
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Study on error of spiral bevel gear
Combining the research of machine tool adjustment parameters with finite element analysis is of great significance to the research of
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Determination of length parameters of helical gear hob
According to the interference diagram of hobbing helical gear and the change of width parameters of helical gear and length
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Component assembly of helical gear hobbing motion simulation
As required, the helical gear hobbing take the modulus of 2.5mm as an example for solid modeling. Using the designed
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Virtual machining of spiral bevel gear
In intersecting shaft transmission, spiral bevel gear has the advantages of large bearing capacity, low noise and stable transmission. With
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Structural parameters of gear hob
(1) Outer diameter of gear hob The outer diameter of gear hob not only affects the stability of cutting, but
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Analysis of NC machining process of spiral bevel gear
1. NC machining process principle of spiral bevel gear Spiral bevel gear is only a kind of gear transmission, and
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Failure analysis of grinding crack of shearer gear
1. Material composition inspection The gear of shearer needs surface carburization and quenching. The material is 25CrMo steel specified in
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Selection of basic worm of gear hob
Gear hob is the most widely used high-efficiency tool. Gears with any number of teeth with the same modulus can
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Detection and analysis of grinding cracks in automobile steering shaft teeth
1. Chemical composition analysis Firstly, the chemical composition of the original forging is analyzed, and it is found that the
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Theoretical analysis of undercutting and tooth tip sharpening of helical gear
（1） Undercutting theory of helical gears When the face gear engages with the tool, the speed of the former at
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Surface crack test of s40c steel gear
1. Chemical composition analysis The chemical composition analysis results of steel gears are shown in Table 1, which meet the
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Grinding burn and grinding crack of hard tooth surface of cylindrical gear
In the general NC grinding process, when the grinding wheel bears different loads, the cutting force changes accordingly. The change
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Influence of elastic support system on dynamic transmission error of spiral bevel gear
The dynamic transmission error of spiral bevel gear system is related not only to the mechanical and geometric properties of
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Example comparison of digital real tooth surface modeling of hypoid gear
Taking a hypoid gear as an example, the geometric parameters of the hypoid gear and the setting parameters of the
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Parameter determination and tooth surface error analysis of spiral bevel gear
The real tooth surface of large and small wheels is obtained by scanning measurement of spiral bevel gear tooth surface
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Pretreatment of finite element model of spiral bevel gear
The pre-processing of spiral bevel gear finite element analysis includes element selection, application of load boundary conditions and setting of
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Smoothing algorithm for discrete data points of digital tooth surface of hypoid gear
The traditional discrete data fairing algorithm is based on the curvature calculation of interpolation curve, and the “noise points” are
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Establishment of finite element model of spiral bevel gear
Three finite element models of gear pairs are established on ABAQUS platform: theoretical tooth surface, only large wheel meshing surface
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Improved local interpolation algorithm for digital tooth surface of hypoid gear
The traditional NURBS surface interpolation algorithm interpolates the curve first and then fairs the curve. The defect of this method
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Dynamic transmission error of spiral bevel gear with real tooth surface
1. Mathematical model of transmission error Figure 1 shows the dynamic model of spiral bevel gear transmission system under elastic
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Real tooth surface model of hypoid gear based on non feature discrete data block technology
In the process of constructing the real tooth surface of digital hypoid gear, in order to quickly and accurately describe
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Coupling dynamic modeling of helical gear modification and friction excitation
According to Newton’s second law of motion and D’Alembert’s principle, an 8-DOF torsional vibration and translational vibration coupling dynamic model
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Real tooth surface model of hypoid gear based on three coordinate measurement
In the actual use of hypoid gears, the wear phenomenon can be regarded as tooth profile error. In order to
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Theoretical tooth surface model of hypoid gear
In order to facilitate the establishment of the real tooth surface model, the theoretical tooth surface model is established first.
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Calculation of meshing stiffness of helical gear before and after modification
The above single pair of tooth stiffness algorithm is used to calculate the comprehensive meshing stiffness of helical gears with
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Study on calculation method of helical gear friction excitation
For helical gear system, generally, the total coincidence degree is greater than 2, that is, at least two tooth pairs
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Cutting test of equal height spiral bevel gear
According to the cutting parameters of equal height spiral bevel gear determined by simulation and the inclined angle of cutter
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Cutting simulation of equal height spiral bevel gear
① Import the cutter bar and gear blank models established in UG into advancededge software according to the actual machining
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Cutter path in cutting simulation of equal height spiral bevel gear
The cutting path of contour spiral bevel gear with extended epicycloid cannot be fully simulated in advantageedge software. The actual
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Manufacture and assembly of mould for spur gear
The process experiment mold design refers to the mold structure of the finite element model and the main size parameters