Case Analysis of the Mathematical Model of Spur Gear Actual Coincidence
Take the traction spur gear of a certain type of locomotive as an example to calculate the actual coincidence before […]
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Design of planetary gear transmission structure of manipulator
In general, the underactuated manipulator driven by motor usually uses the dynamic coupling effect to realize the underactuated form of
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Parameter design of hypoid gear with super reduction ratio
As shown in the figure, the geometric relationship of hypoid gear pitch cone is shown. The pitch circle radius r1
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Self service method results of spiral bevel gears
The same batch of spiral bevel gears with the same spiral bevel gear material, CNC milling method and heat treatment
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Precise detection of spiral bevel gear
Under the condition of the same batch of spiral bevel and spiral bevel gears with the same spiral bevel gear
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Load characteristic analysis of tractor gear power output transmission system
In order to study the influence of rotary tillage working load on the power output transmission system, the tractor gear
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Simulation test verification of tractor gear dynamics model
To verify the accuracy of the model, the simulation results are compared with the test data in the time domain
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Influence of meshing impact time on vibration characteristics of high speed helical gear transmission
In order to qualitatively study the influence of meshing impact time on the vibration characteristics of helical gear transmission, the
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Vibration response of high speed helical gear drive under meshing impact excitation
In order to study the vibration characteristics of the system under separate excitation of meshing impact, the meshing impact curve
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Vibration Response of High Speed Helical Gear Transmission Excited by Time varying Meshing Stiffness
Input the obtained time-varying meshing stiffness curve into the dynamic equations, obtain the vibration response of single-stage helical gear transmission
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Vibration Characteristics of High Speed Helical Gear Transmission Excited by Time Varying Meshing Stiffness
The calculated vibration accelerations in all directions of the helical gear are combined into “relative vibration accelerations a in the
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Wind resistance power loss of spiral bevel gear pair
Figure 1 shows the pressure cloud diagram of the driven gear tooth surface. The pressure P is in MPa. It
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Wind resistance power loss result of spiral bevel gear pair
The numerical simulation results are shown in Table 1 and Table 2. Test No. Gap/mm Opening/(°) Wind resistance torque of
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Simulation of wind resistance power loss of spiral bevel gear pair
1. Simulation scheme design The numerical simulation calculation is carried out in two parts, one is the gearbox configuration without
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Model Solution Setting of Spiral Bevel Gear Pair
The model is solved with Fluent software, and the mesh file is imported into Fluent to set the boundary conditions;
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Turbulence model equation of spiral bevel gear pair
1) Fluid Reynolds number calculation Where, v is the characteristic velocity of the flow field, in m/s; L is the
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Basic governing equations of spiral bevel gear pair in fluid domain
The spiral bevel gear pair involved in the calculation is placed in a given reduction gearbox. If the wind shield
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Influence of optimal modification of addendum involute of long tooth profile on time-varying meshing stiffness and time-varying meshing force of helical gears
The optimal modification scheme of the addendum involute of the long tooth profile is the modification amount of the driving
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Influence of optimal modification of addendum arc of long tooth profile on time-varying meshing stiffness and time-varying meshing force of helical gears
The optimal modification scheme of the addendum arc of the long tooth profile is 5% of the modification amount of
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Influence of optimized modification on sliding coefficient of helical gear pair
The sliding coefficient is an important parameter to measure the relative sliding degree between the tooth surfaces of the meshing
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Compound modification scheme of helical gear
In order to further reduce the transmission error of the helical gear pair, it is necessary to consider the composite
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Optimization Analysis of Helical Gear Drum Modification Scheme
Figures 1, 2 and 3 respectively show the simultaneous tooth drum modification of wheel and pinion gears, the drum modification
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Influence of pinion tooth width on meshing performance of helical gear pair
(1) Influence of pinion tooth width on transmission error of helical gear Figure 1 shows the relationship curve between pinion
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Influence of gear width on meshing performance of helical gear pair
(1) Influence of gear width on transmission error of helical gear Figure 1 shows the curve of the relationship between
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Influence of helix angle on meshing performance of helical gear pair
(1) Influence of helix angle on transmission error of helical gears Figure 1 shows the relationship curve between the helix
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Helical gear pair check
1. Meshing interference inspection KISSsoft software can mark the contact point of the tooth surface of two gears in the
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Establishment of Helical Gear Pair Model for Electric Vehicle Reduction Box
1. Helical gear material selection Helical gear materials can be roughly divided into four categories, such as Q235, Q275, 45
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Solution of Herringbone Gear Meshing Stiffness by Finite Element Method
When Abaqus is used to simulate the meshing stiffness of herringbone gear, the calculation accuracy is affected by the increased
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Evaluation of experimental model of herringbone gear symmetry deviation
In order to evaluate the accuracy of the model, the measured results of herringbone gear at 1000r · min ^
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Symmetry deviation of herringbone gear
Herringbone gear is composed of two helical gears with equal helix angle and opposite direction. If the tooth surfaces on
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Basic parameters of planetary gear transmission system
In the research of planetary gear transmission system, the module selection range is usually 1-50 mm. Because the small module
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Raw material characteristics of imported shearer rocker gear
The gear material was sampled, and its chemical composition was analyzed by three testing institutions. The chemical composition index was
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Influence of contact force on temperature of helical gear tooth surface
In order to study the influence of temperature on the contact force of helical gear tooth surface, the tooth surface
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Influence of helical gear tooth surface friction
The friction coefficient of tooth surface in helical gear meshing is f ≤ 0 2. Combined with the relevant research
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Influence of helical gear tooth plastic deformation
Based on the elastic-plastic model, the tooth surface contact force of helical gear under different loads (400, 1000, 1500, 2000N
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Contact analysis of helical gear teeth
The heating flow density is applied to the meshing contact helical gear tooth surface, and the convective heat transfer coefficient
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Contact analysis of helical gear tooth elastic model
The elastic and elastoplastic models can be obtained by inputting two different strain curves. Among them, the elastic model only
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Deviation analysis of parametric modeling for reverse measurement of double circular arc gears
The sources of gear errors are as follows: machining deviation, measurement deviation and wear deviation. In terms of machining, the
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3D modeling of helical gear
By combining the basic involute equation with the involute in the gear machining coordinate system, the involute curve equation of
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Contact stress of spiral bevel gear in limit state
The contact strength is a key link to be considered in the design of spiral bevel gears. The strength calculation
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Basic parameters of spiral bevel gear
Parameter name Parameter value Tooth ratio 31/26 Large end modulus / mm 8.654 Helix angle / (°) 35 Pressure angle
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Machining test of bevel gear tooth top trimming
1. Part installation and positioning Install the NC turntable in the middle of the workbench of the vertical machining center,
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Test preparation of bevel gear tooth top trimming technology
1. Software preparation The secondary development is carried out on the basis of NX software, and a small plug-in is
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Calculation error of large coincidence degree of spiral bevel gear
According to the relevant provisions of GB / T 11365-2019 standard, the specific accuracy values of spiral bevel gears and
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Fatigue simulation evaluation of hypoid gears with super reduction ratio
The established three-dimensional assembly model of super reduction ratio hypoid gear is imported into the finite element software Ansys Workbench.
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An example of the design of spiral bevel gear with large degree of reconnection
Taking the working surface of a pair of spiral bevel gear pairs that can be paired (in which the large
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Preset meshing performance of spiral bevel gear
The main indexes of meshing performance of spiral bevel gears include transmission error, tooth surface impression and design coincidence degree.
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Calculation of starting and final tangent points of gear hob
The positions of the starting and final tangent points of the gear hob along the tooth axis are shown in
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Determination of installation position of gear hob
The starting position of gear hobbing tool installation is shown in the figure. End position of tool channeling: LPO /
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Selection of cutting path for gear hobbing
Calculate the tool travel according to Hoffmeister’s formula: Where: FA — axial tool path of gear hobbing cutting; H1max –
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Determination of the shifting length of gear hobbing hob
As shown in the figure, the tool shifting length of gear hobbing hob is calculated according to the following formula:
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Calculation of the length of generating area of gear hob
The calculation method of the length of the generating area of gear hobbing hob is shown in Figure 1. If:
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Calculation of working length of gear hobbing hob
The cutting process of gear hob should be divided into pre machining area and generating area; Most of the metal
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Selection principle of groove number of gear hob
Gear hobbing multi groove hob is shown in the figure. When using gear hobbing multi groove hob, the following conditions
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Influence of the number of hob slots on the tooth profile error of gear hobbing
The selection of gear hobbing multi groove hob has the following advantages: (1) Gear hob has many grooves and good
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Influence of the number of gear hobs on cutting efficiency
The number of hobs Z0 has an important influence on the machining time In some cases, the use of gear
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Influence of gear hob diameter on gear surface roughness
The selection of large diameter gear hobbing hob has the following advantages: (1) Under the condition of maintaining the same
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Influence of gear hob diameter on cutting efficiency
The relationship between the outer diameter of gear hobbing hob and hobbing time Ht is shown in the figure. Where:
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Calculation of main design angles of gear hob
Theoretically, the larger the rake angle of the gear hobbing hob, the smaller the cutting load of the cutter teeth.
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Cumulative error of groove circumferential pitch of gear hobbing hob
When the rake face of the chip holding groove is unevenly distributed relative to the center of the inner hole