Countermeasures for technical difficulties in gear cutting
1.Synchronous phase locking Synchronous phase locking is a method of frequency capture in the field of communication, in order to […]
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Meshing performance of Hypoid Gear Considering installation error
In engineering application, due to machining error, installation error and support deformation, the meshing position of hypoid gear pair can
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Establishment of finite element model of spur gear
Cold extrusion process is a complex elastic-plastic deformation process with many influencing factors. Die shape, material properties, lubricant selection and
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Original forming technology of spur gear
Large module gear in power transmission of heavy industry (m ≥ 3) is essential. With the rapid development of heavy
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Calculation example of tooth contact of cycloid hypoid gear based on installation error
The mathematical model of hypoid gear with split cutter face rolling cutting method is established. The three-dimensional model of small
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Tooth surface contact analysis of hypoid gear
Figure 1 shows the gear pair meshing coordinate system, S1 and S2 are the dynamic coordinate system of small wheel
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Precision forming technology of large modulus and large specification spur gear
With the rapid development of automobile industry, precision forming of spur gear has become an inevitable trend in the development
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Tooth surface equation of hypoid gear
In the process of generating, the wheel blank and the forming wheel are hobbed to form a cycloid hypoid gear.
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Finite element calculation model of meshing stiffness of spiral bevel gear
The stiffness calculation of spiral bevel gear requires the comprehensive elastic deformation UN of contact force FN and contact position.
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Equation of hypoid gear face hobbing cutter
According to the cyclo palloid method, the gear is processed with a multi head cutter head. The cutter head adopts
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Kinematic die for strong tooth scraping of cylindrical gear
Kinematic model of strong tooth scraping take spur gear as an example. The kinematic model of strong tooth scraping is
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Loaded meshing stiffness of hypoid gear
Then, the contact analysis of the gear under loading is carried out. The resistance moment applied at the output end
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Meshing assembly and motion simulation of helical cylindrical gear
Using the parametric design of helical gear in Chapter 2, a helical gear with the same modulus as helical cylindrical
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Transmission error of hypoid gear under small load
According to the gear meshing stiffness calculation model, before calculating the gear meshing stiffness under loading, the transmission error of
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Parametric modeling of helical cylindrical gears
Before the meshing motion simulation of helical gear, the involute helical cylindrical gear is created first. According to the involute
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Realization of helical gear hobbing
When hobbing helical gear, first check the correctness of fixture installation, the accuracy of tool setting and the adjustment of
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Establishment of finite element model of hypoid gear
The established three-dimensional model of hypoid gear is saved in *. STP format and imported into the software HyperMesh for
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Structural parameters of helical gear hob
(1) Outer diameter of helical gear hob The outer diameter of helical gear hob not only affects the stability of
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Verification of meshing stiffness model of hypoid gear
The spur gear is selected as the object to verify the model. This is mainly because the current spur gear
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Selection of basic worm of helical gear hob
Helical gear hob is one of the most widely used high-efficiency tools. Gears with any number of teeth with the
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Time varying meshing stiffness of hypoid gear of automobile drive axle
The previous gear meshing model is based on empirical design formula or gear geometric meshing analysis. With the improvement of
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Hobbing principle of helical gear
Gear hobbing belongs to the generating method, and its principle is equivalent to the meshing transmission of a pair of
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Influence of hypoid gear torque on time-varying meshing parameters
1. Effect of torque on coincidence degree Calculate the large wheel torque as 1000 n respectively · m、2 000 N
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Tooth surface equation of helical gear
Before deriving the equation of helical gear, the meshing equation is obtained first. The process of machining helical gear is
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Establishment of meshing coordinate system of helical gear
When the generating method is used to process helical gear, the main parameters are determined first: the rotation direction of
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Time varying equivalent meshing parameters of hypoid gears
The meshing position, meshing force, action direction and meshing stiffness of hypoid gear all change with time period. In the
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Error coupling compensation principle of herringbone gear
Due to the limitation of manufacturing difficulty and production cost, it is difficult to improve the transmission stability by improving
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Finite element model of hypoid gear
Relevant parameters of hypoid gear. It is defined that the axis of the small wheel is parallel to the x-axis
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Detection and error compensation technology of spiral bevel gear
With the development of bevel gear processing and detection technology, bevel gear tooth surface detection and error compensation feedback technology
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Time varying meshing characteristics of hypoid gears based on finite element method
In the dynamic modeling and analysis of hypoid gear system, the meshing relationship of hypoid gear is treated as spring
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Analysis on the influence of distortion of hypoid gear cutting compensation heat treatment
1. Cutter compensation heat treatment distortion The tooth profile of hypoid gear is complex, which has the problems of difficult
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Experiment on influence of relative tooth surface error on contact area of hypoid gear after heat treatment
1. Test purpose In order to more clearly understand the influence of the relative helix angle error of the driving
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Analysis method of gear heat treatment contact zone offset
The tooth surface error caused by gear heat treatment distortion is the main reason for the offset of gear contact
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Heat treatment distortion law of hypoid gear
In the process of heat treatment, heating and cooling of hypoid gear, due to the uneven thermal stress and tissue
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Causes of deformation and heat treatment defects of rear axle gear and preventive measures
1. Defect content The automobile rear axle gear is a hyperbolic bevel gear with complex shape. The deformation is inevitable
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Three dimensional modeling of hypoid gear transmission system
The hypoid gear transmission studied consists of a small hypoid gear and a large hypoid gear. Due to the complex
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Causes and preventive measures of hardened layer, hardness and heat treatment defects of rear axle gear
1. Defect content Including unreasonable distribution of hardened layer, heat treatment defects, surface hardness too high or too low heat
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Optimization of gear grinding machine parameters to improve gear grinding efficiency of carburized and quenched gears
Grinding parameter optimization According to the grinding characteristics of grinding wheel, reasonably improve the grinding parameters. Comparison of grinding efficiency
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Example of hobbing method for high order elliptic gear
Taking MATLAB as a tool, the three-dimensional virtual gear hobbing of high-order elliptical spur gear and helical gear is carried
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Methods of improving gear grinding efficiency of carburized and quenched gears
The heavy-duty gearbox gear bears a great load, which requires the characteristics of stable transmission, low noise and long service
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Influence of cutting edge shape of gear hobbing tool on tooth surface roughness
The shape of tool edge is also an important factor affecting the tooth surface roughness in gear hobbing. Two hole
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Influence of fillet radius of hob top edge on tooth surface roughness in gear hobbing
During gear hobbing, the surface quality at the gear root is determined by the fillet radius and rake angle of
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Influence of gear hobbing processing parameters on tooth surface roughness
Y3150 gear hobbing machine is selected as the experimental equipment, 6542 tungsten molybdenum high-speed steel, class a gear hob with
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Measuring method of tooth surface roughness in gear hobbing
Because the gear tooth surface roughness is affected by many factors, the results obtained from different tooth surface measurement directions
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Calculation results of meshing stiffness of helical gears without considering tooth profile trimming
In order to verify the accuracy and rapidity of the method in this paper, the same gear parameters are used
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Machining simulation experiment and analysis of driving gear of shearer cutting part
Based on the parameters of a shearer and combined with the actual operation, the simulation experiment is carried out by
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Machining error and influence of driving gear in shearer cutting section
The transmission system of shearer cutting part is mainly composed of cutting motor, cutting drum, fixed shaft gear, gear shaft
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Establishment of comprehensive meshing stiffness model of helical gear with tooth profile trimming
When the helical gear is an ideal tooth profile, assuming that there is no backlash between the gear pairs and
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Gear cutting test on universal milling machine
In order to realize the new gear cutting method on the general milling machine, a device which can make the
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Gear cutting test on shaft machining center
The proposed gear cutting method can be directly realized by using a 5-axis machining center. When the vertical machining center
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Gear cutting processing of helical gear blank conical end mill
In the case of machining helical gears, the tool moves along the rotation axis of the gear blank, which is
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Meshing stiffness and error model of Helical Gear Considering modification
The helical gear can be regarded as a sheet helical gear. The helical gear is divided into m sheet helical
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Adjustment method of module, number of teeth and pressure angle in gear cutting of conical end mill
In this method, the gear parameters, i.e. modulus m, number of teeth Z and pressure angle α ， It can
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Basic principle of gear cutting method of conical end milling cutter
The proposed method uses a conical end mill as a tool, moves back and forth in the tooth width direction,
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Causes of forging folding defects of transmission second shaft gear
Forging process flow of two shaft gear forgings: blanking with band saw（ φ 85mm round steel) → heating in medium
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Comprehensively consider the influence of tooth profile and tooth direction modification parameters on the stiffness and transmission error of helical gear
The modification amount of helical gear profile CA = 30 μ m. The helical gear profile modification length La =
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Isothermal normalizing process test of carburized gear blank forging waste heat
1.Microstructure and performance requirements of forged gear blank 20CrMnTi is selected as the material of automobile gearbox gear. The technical
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Forging folding defect of transmission second shaft gear
Folding is a common defect in gear forging production, which is formed by the local convergence of oxidized metal surfaces
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Mathematical model for optimization of forging process parameters of gear blank
The optimization problem in forging process includes two aspects: first, analyze the optimization design problem and establish the corresponding mathematical
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Key manufacturing technology of large gear blank
The large gear of converter secondary reducer is the tilting of converter and the main bearing component in the process