Prediction of fatigue life of spur gears
For the analysis of fatigue crack propagation of spur gears, the calculation of crack propagation life of spur gears is […]
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Scientific
Design of gear shaft profile milling cutter with modulus of 65mm
According to the connection mode between the tool and the shank used by our company, the tool structure is designed […]
Scientific
Machining of tooth profile of large module gear shaft
The gear shaft with modulus of 65mm (see Figure) is one of the key parts in the transmission mechanism of […]
Scientific
Finite element analysis of cylindrical gear with variable hyperbolic arc tooth profile
In the finite element analysis of the whole machine, the contact between parts has a great impact on the analysis […]
Scientific
Comparative analysis of stress field between cold extrusion and hot extrusion of spiral bevel gear blank
It can be seen from Fig. 1 that the stress distribution near the bevel of the extrusion die is also […]
Scientific
Structure of cylindrical gear machine tool with variable hyperbolic arc tooth profile
In finite element analysis, the solution efficiency is low and the time cost is greatly increased because the machine tool […]
Scientific
Manufacturing and forming principle of cylindrical gear with variable hyperbolic arc tooth profile
The special machine tool for variable hyperbolic arc tooth line cylindrical gear is designed based on the principle of spatial […]
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Extrusion closed die forging forming of driving spiral bevel gear blank
Although the production efficiency of cross wedge rolling forming active spiral bevel gear blank is very high, the material utilization […]
Scientific
Comparison of heat treatment defects of cast steel large gears
Heat treatment is not only a heating and cooling process of workpiece, but also a process of stress generation and […]
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Two processing techniques and flaw detection of large cast steel gear
Steel casting defects are common. Large gears are steel castings in terms of material, and various defects often appear. Before […]
Scientific
Fatigue crack growth rate of spur gear
Within the scope of on-line elasticity, the theory of fatigue crack growth rate of spur gear is mainly Paris theory. […]
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Three dimensional crack propagation analysis of spur gear root
Spur gears are widely used in electric power, chemical industry, petroleum, aerospace, automobile and other fields. Almost all these spur […]
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Variable hyperbolic arc tooth profile cylindrical gear machine tool
With the rapid development of modern industry, new requirements are put forward for mechanical transmission devices in the manufacturing field. […]
Scientific
Metal flow analysis of spiral bevel gear blank
(1) Metal flow field during hot extrusion Figure a ~ C in Figure 1 shows the metal flow state at […]
Scientific
Stress, strain and temperature analysis of spiral bevel gear blank
(1) Stress analysis of vertical forging process It can be seen from Figure 1 that the stress at the conical […]
Scientific
Analysis of damage value of spiral bevel gear blank
The damage value in deform does not indicate whether there is damage, but the possibility of defects in this part […]
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Numerical simulation of precision forming of driving spiral bevel gear blank
(1) For the cross wedge rolling process to form the driving spiral bevel gear blank, can we consider selecting the […]
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Cross wedge rolling closed die forging forming of driving spiral bevel gear blank
Due to the material head, the material utilization rate is not high and the coaxiality of the product is not […]
Scientific
Folding defect of spiral bevel gear blank
During the rolling process, the rolled piece begins to fold in the wedge section II, and the shaft is rolled […]
Scientific
Dimensional error analysis of spiral bevel gear blank
Use the measuring tool in dfeorm post processor to measure the dimensions of each part of the spiral bevel gear […]
Scientific
Derivation of calculation formula for compound mode crack propagation rate of spur gear
The fatigue crack growth rate of spur gear is the basis for predicting the crack growth life. Paris formula is […]
Scientific
Geometric analysis of spiral bevel gear blank
After the end of the wedge section, the forming of the workpiece is coming to an end, and the parts […]
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Compound crack fracture theory of spur gear
The cracks in practical components are often composite cracks composed of two or more cracks. Considering the random combination of […]
Scientific
Cross wedge rolling closed die forging process for spiral bevel gear blank
The process adopts two processes: first, the rod is rolled by cross wedge rolling, and then the cone head is […]
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Precision plastic forming process of automotive driving spiral bevel gear blank
As one of the core parts of the automobile drive axle, the driving spiral bevel gear is easy to be […]
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Development of warm precision plastic forming of spiral gears
For the swing rolling forming of spiral bevel gear, the key parameters such as taper of cone die, common angle […]
Scientific
Demoulding method of spiral gear forging
The tooth profile of a spiral gear has a helical angle with a certain angle. Therefore, when demoulding the spiral […]
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Cross wedge rolling forming of driving spiral bevel gear blank
The most traditional method of producing driving spiral bevel gear blank in China is pre forging cross forging method, which […]
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Study on precision forming process of bevel gear by cold rotary forging
The cold rotary forging precision forming process of bevel gear is an advanced manufacturing technology. Its process design in actual […]
Scientific
Design of concave die for spiral cylindrical gear centripetal bearing structure
Figure 1 shows the engineering drawing of spiral cylindrical gear bearing structure female die. It can be seen from the […]
Scientific
Compound crack inclination of spur gear
In the process of three-dimensional composite crack propagation, the existing fracture criteria can not completely and accurately describe the crack […]
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Crack types of spur gear root
Although the emergence of fracture mechanics has only been half a century, with the unremitting efforts of scholars all over […]
Scientific
Overview of cross wedge rolling technology
Cross wedge rolling drives the workpiece to rotate in the opposite direction of the roll through the same rotation of […]
Scientific
Cross wedge rolling process of spiral bevel gear blank
This process is planned to adopt one-time rolling forming. Considering the requirements of cross wedge rolling process on the symmetry […]
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Precision plastic forming process of automotive driving spiral bevel gear blank
As one of the core parts of the automobile drive axle, the driving spiral bevel gear is easy to be […]
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Precision plastic forming of driving spiral bevel gear blank
Spiral bevel gear is the most critical part of the transmission system. The service life and vehicle performance of automobile […]
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Warm precision plastic forming of helical gear
Spiral gear is a key part used in mechanical transmission and power. It has high technical content, wide uses and […]
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Cold rotary forging process in precision machining of bevel gear
The precision forming of bevel gear by cold rotary forging is an advanced bevel gear processing technology adopted in recent […]
Scientific
Design of concave die for spiral bevel gear centripetal bearing structure
Figure 1 shows the engineering drawing of spiral bevel gear bearing structure female die. The outer diameter of the die […]
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Design of demoulding die for precision plastic forming of helical gear
After the precision plastic work is completed, the workpiece may be close to the punch or stuck in the die, […]
Scientific
Simulation results and analysis of swing rolling forming of spiral bevel gear
Swing rolling of spiral bevel gear is a processing method in which the blank is continuously and locally loaded by […]
Scientific
Initial conditions of spiral bevel gear simulation
In the swing rolling of spiral bevel gear, there are many factors affecting the forming quality and size of bevel […]
Scientific
Stress intensity factors in the process of compound crack propagation of spur gears
In the process of spur gear crack propagation, the stress intensity factor changes with the crack propagation. Compared with the […]
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Research trend of root crack of spur gear
At present, simplified models are used in the research of fatigue crack of spur gear tooth root. In these simplified […]
Scientific
Establishment of finite element model of spiral bevel gear
When using rigid viscoplastic finite element method to analyze metal plastic forming, the material meets the following assumptions: (1) ignoring […]
Scientific
Swing rolling of spiral bevel gear
In recent years, some scholars have done a lot of research on the rotary forging process. The rotary forging of […]
Scientific
Simulation results and analysis of closed die forging of spiral bevel gear
Figure 1 shows the equivalent stress distribution diagram of closed die forging of spiral bevel gear. Under four reduction quantities, […]
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Characteristics of rotary forging process of bevel gear
Due to the characteristics of the rotary forging process of bevel gear, it has the following main advantages: (1) Save […]
Scientific
Closed die forging of spiral bevel gear
1.Establishment of finite element model The finite element model is shown in Figure 1. The forging with gears is formed […]
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Precision plastic forming demoulding die for spiral bevel gear
Spiral bevel gear is one of the core parts of automobile engine to transmit power. It can transmit large load […]
Scientific
Numerical simulation of die forging of round bar blank of helical cylindrical gear
The blank with lower boss needs to be obtained by large bar cutting, which not only wastes man hours, but […]
Scientific
Realization of helical gear
The normal profile is scanned according to the spiral guide line to generate the helical gear profile surface, and then […]
Scientific
Simulation of compound crack propagation of spur gear
It is necessary to set up the parameters and mechanical model in the crack propagation process of spur gear by […]
Scientific
Numerical simulation of die forging of helical cylindrical gear blank
The blank material is DEFORM-3D material library AISI-4120, the temperature is 850 ℃, the temperature effect in heat conduction and […]
Scientific
Analysis of technological parameters of helical cylindrical gear
Figure 1 shows the helical cylindrical gear in the automobile gearbox. The normal surface modulus M = 2.5mm, the number […]
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Research status of root crack of spur gear
Most spur gears yield to cyclic load and are widely used in aerospace, wind power generation and other industrial fields. […]
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Precision plastic forming of helical cylindrical gear
Helical cylindrical gear is an important transmission part widely used in automobile and machinery industry. Its shape is complex, and […]
Scientific
Realization of helical gear
The solid contour is generated by cutting the solid contour as the spiral surface, and then the contour is generated […]
Scientific
Analysis of process parameters and gear parameters in numerical simulation of helical gear
For a long time, for designers, the design or development of a process scheme is basically based on production experience. […]
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Rotary forging process of bevel gear
Bevel gear swing rolling, namely swing rolling, also known as axial rolling, is a new plastic processing technology gradually and […]