The future development trend of gear anti fatigue manufacturing technology
The development of gear machinery manufacturing industry in the world can be divided into three stages according to the characteristics […]
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Heat treatment hardening and surface integrity control of gears
The non main load-bearing gear is often machined directly after quenching and tempering of 45 steel. The recently developed low
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Calculation of Tooth Face Friction Factor of Spur Gear under Different Lubrication Conditions
Gear transmission system mainly has 4 different lubrication states, including elastohydrodynamic lubrication, mixed lubrication, boundary lubrication and dry friction.The friction
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Division of Tooth Deformation Stages during Hot Precision Forging of Cylindrical Helical Gears
The figure shows the load stroke curve of the cylindrical helical gear during hot forging.At the early stage of forming,
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Tooth Deformation Law of Cylindrical Helical Gear during Hot Precision Forging
Cylindrical helical gears are widely used in ship, automobile, aviation and other industries because of their smooth transmission, good engagement
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Time-varying meshing stiffness calculation of spur gear potential energy method
The profile shape of standard involute gears generally consists of two sections, i.e. transition rounded curve AB and involute curve
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Geometric motion model of spur gear meshing
According to the engagement principle of involute spur gear, when a pair of involute profiles engage and drive, any engagement
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Accurate modeling of time-varying meshing stiffness of spur gear pair based on geometry and potential energy method
In mechanical transmission system, gear transmission system is the most widely used in power and motion transmission devices.Time-varying meshing stiffness
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Laser tracking in place measurement method for oversize gears
As far as the gear in place measurement is concerned, the common problem is how to accurately determine the position
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Calculation of tooth surface contact temperature of spur gear
During gear meshing, the tooth contact temperature and the instantaneous tooth surface temperature change in real time, which can be
Scientific
Calculation of instantaneous temperature on tooth surface of spur gear
Tooth surface instantaneous temperature is the instantaneous high temperature generated by contact points during gear meshing, which is mainly distributed
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Simulation Analysis of Residual Stress on Gear Forming Grinding
Due to the different normal grinding depths and wheel speeds at different locations of the involute, the intensity of the
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China has a class 1 precision standard gear
In many important fields such as industrial production, aerospace and military equipment, precision gear processing technology plays a key role,
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A new method for measuring the tooth profile of large gears
As shown in the figure, when using the generating method to measure the big gear, the conical probe should start
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Multi site integrated parallel measurement technology for super large gears
The diameter of the oversize gear is large, the number of teeth is large, and the inertia is large. If
Scientific
The difficulty of measuring big gear
Gears are usually divided into vehicle gears and industrial gears. According to the Convention, gears with a diameter greater than
Scientific
Geometric and Kinematic Analysis of Forming Grinding of Spur Gears
As shown in Fig. 1, spur gear shape grinding is to trim the wheel shape to the desired profile and
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Residual stress on tooth surface of spur gear forming grinding
Forming grinding of spur gears is to trim the grinding wheel into an outer profile exactly the same as the
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The realization of gearbox system of agricultural machinery tractor
1. Create gear parametric model Nx software itself can generate gear model, but it can only generate the bottom features
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Obtaining spur gear parameters using machine vision
1.Obtaining Basic Gear Parameters There are many gear parameters and there are certain connections among them. The most important one
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Online measurement of spur gears using machine vision
Gear is one of the most important parts in modern industrial production. In mass production of gears, on-line measurement and
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Conclusion on surface oxidation of Cr Mo Si steel used in automobile gearbox during gas carburizing
The hardness results of carburized layer of heat treated 2.3cr-0.9si-0.3mo steel were measured in the conversion gas reduction furnace and
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Knowledge engineering technology for gearbox of agricultural machinery tractor
Knowledge is the decisive factor of new product competitiveness. The product design based on knowledge engineering is to summarize and
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Experimental conclusion on contact temperature of spur gears
The experimental results of ZHY gear only verify the correctness of the calculation method of tooth contact temperature under EHL
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Contact temperature of spur gears
Gears are widely used in mechanical transmission. Due to the existence of tooth friction, the tooth contact temperature of the
Scientific
Analysis of the mechanism of the uneven load of the gear transmission
The abstract diagram of the cogwheel split torque drive is shown in Figure 1. The transmission direction shown in Figure
Scientific
Study on surface oxidation of Cr Mo Si steel used in automobile gearbox during gas carburizing
With the increasingly strict global regulations on carbon dioxide emissions and fuel consumption efficiency, automobile powertrain systems become more compact
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The main reducer of a helicopter’s coaxial gear split torsional transmission
The overall configuration of the main reducer of a helicopter’s coaxial gear split torsional transmission is shown in Figure 1.
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The load sharing of the cogwheel of a helicopter
The coaxial gear split torque drive is a new type of helicopter main reducer. The enhanced rotorcraft drive system program
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Function analysis of gearbox system of agricultural machinery tractor
The virtual design method of gearbox gear based on knowledge integrates knowledge engineering and parametric design technology, and develops the
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Gearbox gear of agricultural machinery tractor based on knowledge
Due to the crisis of aging population and the sharp decrease of agricultural labor force, China attaches more and more
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Advantages of gear transmission in civil aircraft engines
In order to reduce the unstable factors, the designer thought of the gear transmission technology, which is different from the
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Knock test analysis of automobile transmission gear
According to the knock phenomenon of transmission gear, it is mainly divided into bench test and real vehicle test. In
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Development of gear transmission technology for civil aircraft engine
For decades, the main structure of civil aircraft engine has not changed until the appearance of gear transmission technology. Gear
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Dynamic characteristics of Cracked Gear Transmission System
With the all-round development of the mechanical industry, the requirements of the mechanical equipment for the transmission system are higher
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To improve the quality of gear steel and promote the high-end gear industry
In particular, the plan proposes to implement a special plan for improving the quality of gear steel. At present, the
Scientific
Theoretical research and solution method of knock model of automobile transmission gear
The phenomenon of gear knocking in automobile transmission belongs to the NVH dynamics problem of transmission system. The research idea
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“13th five year plan” gear industry will make full efforts to the high end
In the “13th five year plan” for the development of China’s gear industry (hereinafter referred to as the “plan”) previously
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Research on the knock model of automobile transmission gears based on multi pair gears
Automobile transmission includes many pairs of helical gear pairs, multiple bearings and synchronizer assemblies, etc. when considering the spatial meshing
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Stable development of gear industry and development towards high end
Recently, Professor Zhang Ruifen of ZHY gear said at a gear industry seminar: “there are many fundamental technical problems of
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Research on the knock model of automobile transmission gears based on single pair of gears
With the rapid development of the automobile industry, automobile users have higher and higher requirements for the comfort of automobile
Scientific
Effect of Variation Coefficient of Gear Center Distance on Gear Sliding Rate
The figure shows the gear drive with the number of teeth (Z1=31, Z2=32), modulus (m=6), pressure angle (a=20 degrees), crest
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Influence of Coefficient of Tooth Top Height on Sliding Rate of Gear
The diagram shows the variation trend of gear crest height coefficient when the number of teeth (Z1=31, Z2=32), modulus (m=6),
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The influence of gear number (transmission ratio) on gear sliding rate
Figure 1 shows the change trend of the sliding rate with the number of teeth (transmission ratio) of the gear
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Analysis of the slip rate curve of gear teeth
Theoretically, when k is engaged at N2, η 2 = ∞, η 1 = – 1; when k is engaged
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Independent innovation becomes the main theme of gear industry
In recent years, the gear industry is asking a question, where is the development direction of the industry? Where is
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Calculation of relative sliding rate of involute spur gear teeth
The ratio of the relative tangential speed of the gear pair between the tooth surfaces at the meshing point and
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Analysis of sliding rate of involute gear transmission
In the meshing process of involute gear teeth, the linear speed at a certain meshing point is different, except for
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Carburizing and quenching process of gear surface
Gear, as a widely used mechanical component in mechanical transmission, has the characteristics of accurate transmission ratio, high bearing capacity
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Gear industry will usher in the fourth opportunity
Gear is a key basic component with large quantity and wide range, which is almost used in various fields of
Scientific
Research on Design and Manufacture of Laser Cutting Chuck Drive Gear Pair
Laser cutting equipment mainly uses heat energy generated by laser beam emitted by laser to cut pipes with motion mechanical
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Additive manufacturing and secondary machined face gear
As an additive manufacturing technology, 3D printing is a new technology that subverts the traditional manufacturing, and has become the
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The influence of Involute Harmonic Gear Tooth on bending stiffness and stress concentration
In order to reflect the influence rule of parameters on the maximum circumferential stress, dimensionless radius of chamfered root of
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Future development of face gear manufacturing technology
The manufacturing technology of face gear is based on their manufacturing principles, which can be divided into three categories: Based
Scientific
Single tooth dividing cutting and gear grinding with straight edge cutter
Because the former three machining methods are based on the simulation of meshing between the small wheel (or the profile
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Analysis and diagnosis of abnormal noise of tractor chassis gearbox
Abnormal noise is a common fault of tractor chassis. The abnormal noise is mainly caused by the damage of the
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Stress Analysis of Spur Gear Tooth Face during Powerful Shot Blasting
Shot peening is an important key link in gear production and manufacturing. When the steel shot repeatedly impacts the tooth
Scientific
Maximum circumferential stress of ring gear considering the influence of gear teeth
1. Maximum circumferential stress of ring gear in design specification Considering the influence of tooth parameters, load distortion of flexible
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Milling and planing of face gear
In recent years, Professor Tang Jinyuan’s team has explored the generalization of cutters for the processing of single piece and
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Cutting and grinding gear with disc cutter
Dr. Stadtfeld of Greenson first outlined the idea of using disc wheel to machine face gear. It has the advantages