Brief introduction of optimization design method of automobile transmission gear
In the shift process of the manual transmission, the performance required by the shift gears of different gears is not […]
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Scientific
The method of precise modification of tractor gear profile
1. Shaving before heat Practice shows that concave phenomenon often occurs in the direction of tooth height during shaving. There […]
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The cause of gear failure of agricultural tractor
The phenomenon that a part loses its specified function is called failure. The main forms of parts failure can be […]
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Control of gear distortion by pressure quenching in gear manufacturing
The low life of the bevel gear of automobile rear axle in China is always a big problem. There are […]
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NGW type involute planetary gear drive
Involute planetary gear reducer is a kind of gear transmission with at least one gear moving around a fixed geometric […]
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Study on Optimization of gear parameters of automobile transmission
With the development of automobile towards high performance, gear system should meet the requirements of high efficiency, high reliability, high […]
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Modification of tractor gear profile
There are many methods of gear profile modification. According to the accuracy requirements of gear and gear batch, choosing the […]
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Cause of fatigue crack on gearbox of high speed EMU
Based on the acceleration signal of the key parts measured under typical working conditions, the dynamic stress response on the […]
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The significance of limiting hardenability in gear manufacturing to reduce distortion
1. Test to limit the effect of steel hardenability on distortion 1) Sample The test adopts two sizes of disk-shaped […]
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Basic characteristics of planetary gear mechanism
Through the analysis of the above three kinds of transmission relations, the kinematic characteristics of simple planetary gear mechanism can […]
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Research significance of gear parameter optimization of automobile transmission
In general, mechanical system is composed of power system, transmission system and executive system, in which the power system provides […]
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Research and application of tractor gear shaping technology
Due to the influence of manufacturing and installation errors, gear elastic deformation and thermal deformation, gear transmission will produce impact, […]
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Fracture analysis of gear box of high speed EMU
Fatigue failure is one of the most important failure modes in the use of structures. In the process of using, […]
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Effect of hardenability of steel on distortion in gear manufacturing
The metallurgical factors of steel, such as grain size, non-metallic inclusions, banded structure, hardenability, etc., have an impact on the […]
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Working principle of single row planetary gear mechanism
According to the law of conservation of energy, the algebraic sum of the input and output power of the three […]
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Optimization design method of gear pair optimization model of automobile transmission
In the shift process of the manual transmission, the performance required by the shift gears of different gears is not […]
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Characteristics of simple planetary gear mechanism
Composition of planetary gear mechanism: Simple (single row) planetary gear mechanism is the basis of transmission mechanism. Usually, the transmission […]
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Standardized and quantitative evaluation of the life quality index of the gear transmission system of the coal mine machinery
In order to ensure the stable and safe operation of coal mining machinery, the qualitative indexes in the life evaluation […]
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Application of new forming technology in China gear production
Although the traditional gear manufacturing process has been constantly improved, but it always has some inherent disadvantages. Many scholars completely […]
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Gear manufacturing quenching improves cooling uniformity and reduces distortion
It is the basic principle and method to reduce the distortion of workpiece to make the structure and quality of […]
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Solutions to five common defects in gear machining
In the NC grinder processing industry, the common internal grinding includes bearing ring internal circle processing, gear internal circle processing, […]
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Problems left over by the optimization design method of automobile transmission gear parameters
Through the study of the forming process of involute spiral tooth surface, and the application of ANSYS parametric language to […]
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Life evaluation index system of coal mine mechanical gear transmission system
The life evaluation of coal mine mechanical gear transmission system involves many aspects such as personnel, equipment and environment. The […]
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Improvement of heat treatment technology in Chinese gear production technology
With the deepening of the process of industrial globalization, environmental protection is another prominent and arduous task in front of […]
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Fault types of gear transmission system in coal mine machinery
In the gear transmission system which is the most prone to failure in coal mining machinery, the failure ratio of […]
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Distortion caused by inhomogeneity of quenching and cooling in gear manufacturing
During quenching and cooling, the workpiece will generate volume expansion and large thermal stress and structural stress. If the volume […]
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Brief introduction of distortion control technology in gear heat treatment
The distortion of gear heat treatment, especially the distortion of carburizing and quenching, makes the gear accuracy greatly reduced. In […]
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Material selection of spiral bevel gear
Spiral bevel gear transmission is to transmit the motion and power between any two shafts in space through the meshing […]
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Improvement of heat treatment technology in Chinese gear production technology
In the research of improving the quality of automobile gears, the priority should be given to the selection of materials, […]
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Several measures to prevent forging crack of gear shaft of hard gear reducer
In view of the main causes of the above cracks, we have taken corresponding measures. 1 Strengthen the strict inspection […]
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Casting process design and properties of spiral bevel gear
As the starting point of the casting forging compound forming process, whether the casting process design and the casting defect […]
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Forging process of driven spiral bevel gear of vehicle main reducer
The driven spiral bevel gear of the vehicle main reducer is forged in one heat and two times. The technological […]
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Research progress of gear materials and heat treatment technology in China
As one of the most basic transmission parts in the mechanical industry, gear can continuously transmit power by using tooth […]
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Cause analysis of forging crack on gear shaft of reducer with hard tooth surface
High quality low alloy steel s17Cr2Ni2Mo is the first choice steel for hard tooth surface gear and gear shaft. In […]
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Research on the taper of preform of spiral bevel gear by closed hot die forging
Shu Qifu once put forward the concept of “equivalent blank” to study the influence of taper on the forming process […]
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Brief introduction of forming method of driven spiral bevel gear
This paper briefly introduces the characteristics of several forming methods of driven spiral bevel gear of vehicle main reducer, and […]
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Control of carburizing and quenching distortion of gear and gear shaft of reducer
In the whole manufacturing process, such as design, material, forging, machining, heat treatment, grinding and so on, the distortion of […]
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Study on the tooth profile of preformed spiral bevel gear by closed hot die forging
Based on the design of the process flow, the main purpose of the closed hot die forging step is to […]
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Advantages and disadvantages of 0 ° spiral bevel gear and straight bevel gear
1、 Straight bevel gear The straight bevel gear is the simplest form of the bevel gear. Its design, manufacture, installation […]
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Research on the uniform diffusion tooth profile scheme of cold precision forging preform of spiral bevel gear
The forming quality of forgings directly determines the product quality and service life. After hot die forging, the surface finish […]
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Present situation of rack and pinion drilling machine
The conventional drilling rig uses the hoisting system composed of winch, wire rope, crown block and traveling block to drive […]
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Characteristics of rack and pinion drilling machine
Since the end of 1990s, the multi-functional rack and pinion drilling rig has played an important role in the effective […]
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Failure form and analysis of spiral bevel gear in use
Gear failure generally occurs on the tooth surface, rarely in other parts. According to the basic form of gear failure […]
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Process analysis and forging drawing of spiral bevel gear
1. Part drawing analysis The figure is the part drawing of the rear axle driven spiral bevel gear of a […]
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Possible defects in heat treatment of bevel gears and preventive measures
The possible defects in the heat treatment of 20CrMnTi spiral bevel gear are as follows: 1. Uneven depth of carburized […]
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Six key technology upgrading of China gears industry
This part is the main content of gear technology roadmap. This paper analyzes the current situation, challenges and development goals […]
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The significance and direction of the research on Casting Forging Compound Forming Technology of spiral bevel gear
Using traditional manufacturing technology to produce high-performance and complex parts has become a bottleneck restricting the improvement of product quality […]
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Development and analysis of 20CrMnTi active spiral bevel gear processing technology
According to the technical requirements of the above parts, the following process route is hereby formulated for 20CrMnTi gear: blanking, […]
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Research status of Casting Forging Compound Forming Technology for spiral bevel gear
The advantage of casting process is that it can produce castings of any size and shape at low cost, but […]
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The influence of the transmission ratio and center distance of the worm gear combination on the rotation accuracy
The two-stage transmission mechanism combined with worm and gear is widely used because of its advantages of high transmission power, […]
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Service conditions and performance requirements of the driving spiral bevel gear of the loader
1. service conditions of driving spiral bevel gear parts Gears play the role of transmitting power and changing speed in […]
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On the new milling method of spiral bevel gear
Based on the generating principle of spherical involute tooth surface, a new method of cutting tooth surface of spherical involute […]
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Design example and test of eccentric displacement gear
According to the method of generating tooth profile, the software of calculating the tooth profile of eccentric displacement gear is […]
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Seven key development areas and goals of China gears industry
1.Seven key development areas of China gears industry There are many types of gear products and wide application fields. According […]
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Research status of forming technology for spiral bevel gear of automobile rear axle
Automobile rear axle (also known as drive axle) refers to the rear drive shaft and related components used to transfer […]
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The difference between helical gear drive and worm gear drive
Spiral gear transmission and worm gear transmission are two basic mechanical transmission modes. Spiral gear transmission is mainly the fit […]
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Service conditions and performance requirements of the driving spiral bevel gear of the loader
1. Service conditions of driving spiral bevel gear parts Gears play the role of transmitting power and changing speed in […]
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Seven major problems faced by China gears industry
During the 11th Five Year Plan period, driven by the rapid development of automobile, wind power, high-speed rail, construction machinery […]
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Production technology of spiral bevel gear for automobile rear axle in China
During the 12th Five Year Plan period, China’s automobile industry has made great progress, and the automobile production and sales […]
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Seven similarities between worm gear drive and spiral gear drive
1.The judgment method of rotation direction is the same The spiral gear drive and the worm drive have the same […]