Fatigue crack growth rate formula of heavy transmission gear under different stress ratio
The experimental measurement shows that the lower threshold of fatigue crack growth is 15.29 and 5.08 when the stress ratio […]
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Tooth surface curvature of spiral bevel gear
The right-hand wheel and the left-hand production wheel are an aligned hyperboloid gear pair, and the tooth surface of the
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Calculation of Tooth Surface coordinates of Spiral Bevel Gear
When the parameters of the motion law of the machine tool are determined, the motion equations can be formed by
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Parameters of spiral bevel gear big wheel machine tool
The process pitch cone node of the spiral bevel gear coincides with the design pitch cone node, the pitch cone
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Establishment and discretization of Tooth Surface equation of Spiral Bevel Gear
The workpiece coordinate system is established by taking the installation surface of the workpiece gear as the coordinate plane and
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Cutting Surface equation of Spiral Bevel Gear Cutter head
The axial section of the cutter head is made, and the coordinate system is established as shown in the figure.
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Mathematical Model of NC Machine tool for Spiral Bevel Gear
Establish the coordinate system as shown in the figure according to the geometric model of the machine tool. Among them,
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Direct and indirect generating method of Spiral Bevel Gear and hypoid Gear
Gear machining usually has direct generating method and indirect generating method. The direct generation method is to make the cutting
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Development processing method of Spiral Bevel Gear and hypoid Gear
Spiral bevel gears and hypoid gears are on hypoid machine tools. The design principle of this machine tool is shown
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Constraint conditions of working tooth surface of spiral bevel gear
When the gear pair is driven, the meshing point of the tooth surface expands into an approximate elliptical contact area
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The test of non-circular gear accurate transmission design result of a kind of stepless transmission mechanism
1. Simulation of gear shaping In order to verify the correctness of non-circular gear profile, matlab programming is used to
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Solving the profile of noncircular gear
The formula is the calculation equation of non-circular gear profile (XCK, yck), and (XG, YG) is the involute profile of
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Design of tooth root transition curve of noncircular gear
Generally, transition curve should be designed for gear root, which can reduce stress concentration and improve gear bearing capacity. There
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Tooth profile design of noncircular gear shaper cutter
As shown in Figure 1, OC is the center of gear shaper cutter, G is any point on the initial
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Solving the movement track of gear shaper cutter center by noncircular gear
When the gear shaper cutter Hobbes the non-circular gear, its indexing circle does pure rolling on the pitch curve of
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Flexibility matrix and stiffness matrix of contact finite element model of spiral bevel gear
The flexibility matrix method is used to solve the three-dimensional elastic contact problem. The solution of the contact problem of
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Solving pitch curve curvature radius of noncircular gear and selecting gear shaper cutter parameters
The design methods of non-circular gear tooth profile mainly include envelope method, hobbing tooth profile normal method and shaping tooth
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Solving arc length of pitch curve of noncircular gear
Suppose that the pitch curve arc lengths of the driving and driven noncircular gears are S1 and S2, respectively The
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Solving pitch curve of noncircular gear
As shown in Figure 1, P is the initial meshing point of the non-circular gear, O1 and O2 are the
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Kinematics simulation of pure rolling internal meshing line gear based on cylindrical helix
According to the tooth surface generation method of parallel shaft internal meshing linear gear and pure rolling meshing condition introduced
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Tooth surface construction of parallel shaft pure rolling gear
The different choice of sign in the tooth profile section curve equation will affect the convexity and convexity of tooth
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Technological normal curvature and short-range torsion of spiral bevel gears
The obtained normal curvature and short-range torsion Aa1, BA1 and CA1 are along the direction of EA1 and TA1. Let
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Tooth surface equation of parallel shaft pure rolling gear
Taking the points on the contact lines R1 and R2 as the coordinate origin and the base vectors of fixture
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Prospect of spiral bevel gear NC Machining Technology
Because the research idea is novel, the electromechanical combination involves a wide range, and needs solid mathematical theoretical knowledge, especially
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Establishment of conjugate contact line for parallel shaft pure rolling internal meshing line gear
Establish the space right-handed coordinate system, as shown in the figure. The installation center distance of linear gear pair is
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Improvement measures and validity verification of forging crack of a fuel gear pump shell
According to the cause analysis of the shell forging crack, the forging deformation is increased by increasing the forging process,
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Principle of combined measurement for super large gear
The combined measurement network of super large gear includes laser tracker and its measurement system, flexible joint coordinate measuring arm
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Finding the proper measuring ball diameter of helical gear
Diagramming the imaginary circle diameter DPT of helical gear measuring ball The figure is a diagram of the imaginary circle
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The conversion formula for calculating the diameter of measuring ball of helical gear end profile
The figure shows the geometric relationship of the measuring ball in the alveolar. The N-N section is the normal section
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Tooth profile drawing and auxiliary line drawing of helical gear end face
It is known that the parameter of an external cylindrical helical gear is Mn = 5, α n= 20 °，
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Geometric Model of NC Machine tool for Spiral Bevel Gear
According to the spiral bevel gear CNC machine tool of Gleason Company, the geometric model of the CNC machine tool
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Effect of applied torque on vibration of cylindrical gear pair
In order to study the influence of different applied torques on the vibration characteristics of gear pair and keep other
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Influence of helix angle on vibration of cylindrical gear pair
In order to study the influence of different helix angle on the vibration characteristics of gear pair, keeping other parameters
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Influence of tooth thickness deviation on vibration of cylindrical gear pair
In order to study the influence of tooth thickness deviation on the vibration characteristics of gear pair and keep other
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Influence of tooth thickness deviation on vibration response of gear pair
With the help of ANSYS / LS-DYNA, the finite element model of gear meshing pair is solved, and the gear
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Influence of tooth thickness deviation on meshing stiffness and transmission error of gear pair
The time-varying meshing stiffness excitation and the transmission error excitation are two very important excitations in the actual operation of
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Establishment of vibration characteristic model of cylindrical gear pair considering tooth thickness deviation
Because the backlash of gear pair is usually realized by controlling the tooth thickness deviation, there must be a certain
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Establishment of numerical model for pitting corrosion process of gear in lubrication contact
Based on ABAQUS software, contour integral and MTs criterion are used to simulate the process of pitting corrosion crack propagation
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Analysis of experimental results of shearer rocker gear fault
The vibration data of each state of gear under 50% load is selected for experiment, and the sample length is
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Fault data acquisition of shearer rocker gear
The working environment of shearer is bad, and the gear fault data of rocker transmission system is not easy to
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Prediction of RBF neural network model for planetary gear
1. Training data validation The 90 groups of trained samples are predicted by the RBF neural network established. Fig. 1
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Influence of speed and load on meshing force and frequency coupling of planetary gears
The rotational speed of P10 row is set at 3 000 R / min, and the load of P20 row
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Expression of meshing force of parallel planetary gears
The connection form of parallel coupling planetary gear is shown in Figure 1, and each row has two parts connected.
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Floating track of sun gear in planetary gear transmission system
Under the same basic working condition, the floating track of the sun wheel under three kinds of fault factors is
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Dynamic analysis of planetary gear transmission system with sun gear failure factors
1. Simulation of planetary gear transmission system under fault free condition Using the established planetary gear dynamic model, when all
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Fatigue crack life analysis of internal meshing modified gear
After the completion of the first propagation, the stress intensity factor is calculated, and the second crack propagation is carried
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Life analysis of internal meshing modified gears with cracks
ABAQUS software and FRANC3D software will be used to analyze the fatigue life of internal gear plate crack [4-6]. The
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Finite element analysis of internal modified gear
Because the working condition of the gear is the same when the inner gear plate and the outer gear contact
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Dynamic analysis of internal modified gear
According to the mechanical model of internal gear pair and gear dynamic model, the dynamic model of internal modified gear
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Establishment of internal modified gear model
The three ring drive mainly adopts the internal meshing angle modified gear, so the construction method of modified gear is
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Experimental data validation of planetary gearbox
The effectiveness of arcmde features is verified by using the fault simulation experimental data of planetary gearbox. As shown in
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Multi scale dispersion entropy of planetary gear crack
DE is an index to measure the complexity or irregularity of time series, which has the advantages of high calculation
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Simulation verification test of noncircular gear stepless speed regulation
1. Construction of experimental platform In order to verify the correctness of the design of non-circular gear, the differential equation
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Simulation verification of noncircular gear stepless speed regulation
1. Modeling of non-circular gear stepless speed regulation mechanism This design mainly lies in the research of the output speed
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Parameter matching design of noncircular gear
Due to the different speed ratio characteristics of non-circular gears with different parameters, the design and processing of non-circular gears
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Branch matching design of noncircular gear
From the application characteristics of the stepless speed regulating mechanism, it can be seen that the non-circular gear stepless speed
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Pitch curve design of noncircular gear pair
According to the structural relationship of the non-circular gear stepless speed regulation mechanism shown in Fig. 1, as the generation
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Principle of noncircular gear stepless speed regulation
As shown in Figure 1, the non-circular gear stepless speed regulation mechanism mainly includes two parts: the non-circular gear speed
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Finite element analysis of noncircular gear
Due to the removal of part of the mass, especially the thinning of the tooth thickness, the load-bearing capacity of
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Optimization design of noncircular gear
Let the mass of non-circular gear be m and the speed be m ω， The angular acceleration is ε， If