Angular relationship of fixed shaft eccentric gear train
The unequal model solution of a pair of fixed shaft eccentric gears is extended to the fixed shaft gear train. […]
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Study on continuous cold extrusion process of spur gear (sun gear)
Based on the numerical simulation, the cold extrusion process and die design of spur cylindrical gear (sun gear) are partially
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Continuous extrusion forming of external teeth of spur gear
Stack two spur gear ring blanks into the outer tooth female die sleeve, and insert the spur gear ring blank
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Gear precision forging technology – cold treatment process
As the first stage of gear precision forging, hot and warm forging process is relatively easy to control, because the
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Formulation of forming process scheme for spur gear
The external teeth of the part are spur gears and the internal teeth are involute spline teeth. Three forming process
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Numerical solution of differential eccentric gear based on unequal division model
According to the above model, the actual rotation angle of passive eccentric gear φ The numerical solution steps of 2
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Differential eccentric gear train transplanting mechanism
As the core component of the high-speed transplanter, the rotary transplanting mechanism first used the eccentric gear to drive the
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Rolling forming technology of spur gear
With the rapid development of China’s aerospace, engineering machinery and truck industries, spur gear is an indispensable part of heavy-duty
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Interpolation mechanism of differential eccentric gear system based on unequal division model
Two identical standard involute circular gears are installed eccentrically at their respective axes O1 and O2 in the same phase,
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Design of eccentric modified gear
Due to its simple design and convenient processing, eccentric circular gear is widely used in the transmission system of non-uniform
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Design example and test of eccentric displacement gear
According to the above tooth profile generation method, the tooth profile calculation software of eccentric modified gear is designed in
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Analysis of rice transplanting mechanism with eccentric gear planetary system
At present, rice transplanters used in China, such as 2zt-935 rice transplanter produced by Yanji rice transplanter factory in Jilin
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Solution of grinding crack of 20CrMnTi carburized gear
During grinding, a large number of regularly arranged gear grinding cracks often appear on the surface basically perpendicular to the
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Transformation of space coordinate and normal vector of theoretical tooth surface of spiral bevel gear
In order to measure the profile error of spiral bevel gear on machine, the spatial coordinates and normal vector parameters
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Future development of face gear manufacturing technology
Based on their manufacturing principles, the manufacturing technology of face gear can be generally divided into three categories: Based on
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Calculation of discrete point coordinates and normal vector of theoretical tooth surface of spiral bevel gear
Based on the gear meshing principle and the gear cutting principle of spiral bevel gear large wheel, the tooth surface
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Design of eccentric modified gear
The machining method of the eccentric modified gear generated by the modification method is the same as that of elliptical
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Crack analysis of aviation fuel pump gear
The distribution of gear cracks is shown in Fig. 1 and Fig. 2. Carry out magnetic particle flaw detection on
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Honing, milling and planing of face gear
In order to reduce the surface roughness of hard gear and trim the tooth surface texture after grinding, Wang Yanzhong
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Transmission principle of eccentric gear and eccentric displacement gear
The transmission between eccentric gears will produce backlash changes. Therefore, when calculating the displacement coefficient of eccentric modified gear in
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Technical requirements and process analysis of aviation fuel pump gear
1. Casting technical requirements The structure of gear parts of an oil pump is shown in Fig. 1 and Fig.
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Additive manufacturing and secondary machining 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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Kinematic model of eccentric gear noncircular gear planetary transplanting mechanism
1. Analysis of transmission angular displacement of eccentric gear and conjugate noncircular gear The initial position of the five gear
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Delayed crack of aviation fuel pump gear
The design accuracy of gear pair of fuel oil gear pump is high, and the gear accuracy generally reaches level
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Single tooth indexing grinding gear with straight edge cutter
Because the first three machining methods are based on the simulation of the meshing between the small wheel (or production
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Prospect of ball gear manufacturing technology
1. Five axis NC machining Five axis NC machining is a technology with high technical content and the widest machining
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Disc cutter grinding face gear
Dr. Stadtfeld of Greenson first outlined the idea of machining face gear with dished grinding wheel. The use of dished
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Manufacturing technology and equipment of ball gear
In the available literature, the manufacturing technology of ball gear pair explored can be summarized as casting molding, forming processing
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Worm cutter grinding face gear
Due to the low efficiency and accuracy of gear shaping and can only cut soft tooth surface gears, which is
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Study on error of spiral bevel gear
Combining the research of machine tool adjustment parameters with finite element analysis is of great significance to the research of
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Determination of length parameters of helical gear hob
According to the interference diagram of hobbing helical gear and the change of width parameters of helical gear and length
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Gear shaping machining of face gear
Fellows company has invented the gear shaping processing of face gear as early as 1945. The parameters of the gear
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Component assembly of helical gear hobbing motion simulation
As required, the helical gear hobbing take the modulus of 2.5mm as an example for solid modeling. Using the designed
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Virtual machining of spiral bevel gear
In intersecting shaft transmission, spiral bevel gear has the advantages of large bearing capacity, low noise and stable transmission. With
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Structural parameters of gear hob
(1) Outer diameter of gear hob The outer diameter of gear hob not only affects the stability of cutting, but
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Analysis of NC machining process of spiral bevel gear
1. NC machining process principle of spiral bevel gear Spiral bevel gear is only a kind of gear transmission, and
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NC machining technology of spiral bevel gear
The processing technology of spiral bevel gear is to first cut the gear surface, then select some reference points on
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Cause analysis of grinding crack of shearer gear
The material composition of the shearer gear meets the technical requirements, the hardness of the oxidation zone at the tooth
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Failure analysis of grinding crack of shearer gear
1. Material composition inspection The gear of shearer needs surface carburization and quenching. The material is 25CrMo steel specified in
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Selection of basic worm of gear hob
Gear hob is the most widely used high-efficiency tool. Gears with any number of teeth with the same modulus can
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Mechanism analysis of grinding cracks on automobile steering shaft teeth
The microstructure before carburizing and quenching is ferrite + pearlite. Pearlite is distributed on the ferrite matrix in lamellar form.
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Detection and analysis of grinding cracks in automobile steering shaft teeth
1. Chemical composition analysis Firstly, the chemical composition of the original forging is analyzed, and it is found that the
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Theoretical analysis of undercutting and tooth tip sharpening of helical gear
（1） Undercutting theory of helical gears When the face gear engages with the tool, the speed of the former at
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Surface crack test of s40c steel gear
1. Chemical composition analysis The chemical composition analysis results of steel gears are shown in Table 1, which meet the
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Surface crack of s40c steel gear
With the advent of China’s high-speed, heavy load, alpine and other models, especially the successful launch of China’s standard EMU,
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Grinding burn and grinding crack of hard tooth surface of cylindrical gear
In the general NC grinding process, when the grinding wheel bears different loads, the cutting force changes accordingly. The change
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Technological process of grinding burns and cracks on hard tooth surface of cylindrical gear
There is a heat treatment tooth surface hardening process before grinding the hardened cylindrical gear, which will inevitably lead to
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Influence of elastic support system on dynamic transmission error of spiral bevel gear
The dynamic transmission error of spiral bevel gear system is related not only to the mechanical and geometric properties of
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Example comparison of digital real tooth surface modeling of hypoid gear
Taking a hypoid gear as an example, the geometric parameters of the hypoid gear and the setting parameters of the
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Parameter determination and tooth surface error analysis of spiral bevel gear
The real tooth surface of large and small wheels is obtained by scanning measurement of spiral bevel gear tooth surface
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Improvement of machining technology of large size and high precision spiral bevel gear
The design of side gear and quasi double-sided curved surface gear is the same as that of arc gear and
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Pretreatment of finite element model of spiral bevel gear
The pre-processing of spiral bevel gear finite element analysis includes element selection, application of load boundary conditions and setting of
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Smoothing algorithm for discrete data points of digital tooth surface of hypoid gear
The traditional discrete data fairing algorithm is based on the curvature calculation of interpolation curve, and the “noise points” are
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Machining technology of large size and high precision spiral bevel gear
Processing principle of spiral bevel gear: the Simulation wheel is a processed spiral bevel gear, and the unified chuck is
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Establishment of finite element model of spiral bevel gear
Three finite element models of gear pairs are established on ABAQUS platform: theoretical tooth surface, only large wheel meshing surface
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Improved local interpolation algorithm for digital tooth surface of hypoid gear
The traditional NURBS surface interpolation algorithm interpolates the curve first and then fairs the curve. The defect of this method
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Dynamic transmission error of spiral bevel gear with real tooth surface
1. Mathematical model of transmission error Figure 1 shows the dynamic model of spiral bevel gear transmission system under elastic
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Machining of large size and high precision spiral bevel gear
Spiral bevel gear is a key part in the field of mechanical transmission, which transmits motion or power between intersecting
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Real tooth surface model of hypoid gear based on non feature discrete data block technology
In the process of constructing the real tooth surface of digital hypoid gear, in order to quickly and accurately describe
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Coupling dynamic modeling of helical gear modification and friction excitation
According to Newton’s second law of motion and D’Alembert’s principle, an 8-DOF torsional vibration and translational vibration coupling dynamic model