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
Scientific
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
Scientific
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
Scientific
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
Scientific
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
Scientific
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
Scientific
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
Scientific
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
Scientific
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
Scientific
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
Scientific
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
Scientific
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
Scientific
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
Scientific
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
Scientific
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
Scientific
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
Scientific
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
Scientific
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
Scientific
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
Scientific
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
Scientific
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
Scientific
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
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Cutting simulation of equal height spiral bevel gear
Equal height spiral bevel gear is widely used in automobile, aviation, aerospace and other fields because of its high transmission
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Real tooth surface model of hypoid gear based on three coordinate measurement
In the actual use of hypoid gears, the wear phenomenon can be regarded as tooth profile error. In order to
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Composition of gear cutting system
1.Hardware structure of gear cutting system Hardware structure of gear cutting system: main control computer and main control system are
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Theoretical tooth surface model of hypoid gear
In order to facilitate the establishment of the real tooth surface model, the theoretical tooth surface model is established first.
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CNC system for gear cutting
NC machining of gears is an effective way to improve gear accuracy and machining efficiency. It is one of the
Scientific
Calculation of meshing stiffness of helical gear before and after modification
The above single pair of tooth stiffness algorithm is used to calculate the comprehensive meshing stiffness of helical gears with
Scientific
Study on calculation method of helical gear friction excitation
For helical gear system, generally, the total coincidence degree is greater than 2, that is, at least two tooth pairs
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Melting and heat treatment of cast steel large gear of mining mill
The method of electric arc furnace primary smelting + LF refining is adopted for liquid steel smelting. In order to
Scientific
Cutting test of equal height spiral bevel gear
According to the cutting parameters of equal height spiral bevel gear determined by simulation and the inclined angle of cutter
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Research status of helical gear vibration and noise in China and abroad
The noise generated by structural vibration is an important noise source in helical gear system. In the design stage of
Scientific
Cutting simulation of equal height spiral bevel gear
① Import the cutter bar and gear blank models established in UG into advancededge software according to the actual machining
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Manufacturing technology of cast steel large gear for mining mill
Large gear is the core transmission part of mining mill, and its reliability is related to the safety and stability
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Coupling dynamics of helical gear modification and friction excitation
Gear transmission is the most important and widely used mechanical transmission device, which is widely used in machinery, transportation, chemical
Scientific
Cutter path in cutting simulation of equal height spiral bevel gear
The cutting path of contour spiral bevel gear with extended epicycloid cannot be fully simulated in advantageedge software. The actual
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Establishment of induction heating finite element model of large spur gear
The module of large spur gear is 40, the number of teeth is 35, the tooth width is 80mm, and
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Local induction heating process of large spur gear
Gear is one of the most widely used parts in mechanical transmission. Its quality and service life directly affect the
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Prospect of compound forming technology of continuous cold extrusion and cold shaping of spur cylindrical gears for trucks
The compound forming process of continuous “cold extrusion + cold shaping” of spur gear is studied, mainly for the purpose
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Manufacture and assembly of mould for spur gear
The process experiment mold design refers to the mold structure of the finite element model and the main size parameters
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Establishment of geometric model for cutting simulation of equal height spiral bevel gear
The cutting process of equal height spiral bevel gear with different cutting parameters is simulated, then the cutting force and