Machining simulation of three-axis linkage milling of spiral bevel gear teeth
Based on the establishment of the simplified model, gear blank model and tool model of the gear cutting machine tool, […]
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Profile equation of face gear hobbing
The coordinate system of face gear hobbing is established, as shown in Figure 7. The fixed coordinate system SH0 (xh0,
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Cutting principle of convex tooth surface based on generation line of spiral bevel gear tooth surface
Based on the analysis of the generation principle of convex tooth surface, it can be seen that the convex tooth
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Heat treatment defects and technical improvement of tractor gears
Shanghai Tractor internal combustion engine Co., Ltd. studied the spline hole distortion of xf-125 primary transmission gear, carried out tests
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Basic worm equation of spherical hob for face gear
Taking right-hand rotation as an example, the coordinate system for the forming of face gear spherical hob based worm is
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Key geometric elements and names of spiral bevel gears
The tooth profile of spiral bevel gear is mainly composed of concave tooth surface, convex tooth surface, tooth top part
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Study on chemical heat treatment process of gears
1) Chongqing Changjiang diesel engine factory has carried out rapid gas nitrocarburizing process test and mass production assessment on 45
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Design principle of spherical hob based worm for face gear
Similar to the evolution from rack to ordinary gear hob, the evolution process from cylindrical gear to spherical hob based
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Influence of input torque on dynamic equation of bevel gear
In order to consider the influence of torque on the dynamic response of central transmission bevel gear, keep the input
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Study on gear annealing and quenching and tempering process
For a long time, the forging blanks of car gears are mostly treated by normalizing process. In recent years, with
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Tooth surface equation of face gear
The forming of face gear tooth surface is based on the generating cutting of cylindrical spur gear shaper and face
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Common heat treatment defects of gears and their prevention methods
1. Cracks 1) In the carburizing diffusion stage, the carbon potential is high, the carburizing layer carbon concentration is too
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Gear material and forming
1. Practice has proved that the general machine tool gears are made of medium carbon steel and treated by induction
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Defects of gear heat treatment and its influence
Whether carburizing quenching, carbonitriding quenching, induction heating quenching or overall heating quenching, the possible heat treatment defects during gear quenching
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Development prospect of gear hobbing technology
With the rapid development of information technology and material technology, many new technical achievements have appeared in the field of
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Traveling wave vibration speed of bevel gear
After the natural frequency and vibration mode of bevel gear are determined, the resonance speed diagram shown in the figure
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Study on dynamics of spiral bevel gear
Compared with cylindrical gears, due to the structural form of bevel gears, there are always vibration problems in bevel gear
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Research on key technologies and hot technologies of gear hobbing equipment manufacturing
Due to the greatly shortening of the transmission chain, the NC gear hobbing machine reduces the influence of manufacturing error,
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Failure analysis of heat treatment crack of spiral bevel gear
(1) Analysis of crack properties From the crack morphology, the crack originates from the stress concentration. Whether the root of
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Improvement of gear hobbing process and error control
For a long time, short service life, poor reliability and heavy structure have become the three major problems restricting the
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Process and results of heat treatment crack failure test of spiral bevel gear
(1) Macro morphology of crack: observe the crack morphology of three pairs of spiral bevel gears from the appearance, as
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Development and types of Involute Gears
Gears are widely used in mechanical transmission devices and are one of the common mechanical parts. Human beings began to
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Calculation of normal deviation of tooth surface of logarithmic spiral bevel gear
When measuring the tooth surface of logarithmic spiral bevel gear, there is an error between the theoretical value and the
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NC programming and machining of spiral bevel gear tooth top rounding
The three-dimensional tooth digital model is obtained through reverse engineering modeling. The digital model only includes tooth width, face cone,
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Research on logarithmic spiral bevel gear using reverse engineering technology
Based on the improvement of the meshing theory of logarithmic spiral bevel gear theory, aiming at the existing logarithmic spiral
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Technical development status of gear hobbing machine in China and abroad
Gear hobbing machines are divided into vertical and horizontal according to the structural form. Small gear hobbing machines and special
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Defects of gear heat treatment and its influence
Various defects produced during heat treatment of gears will have potential or obvious adverse effects on their quality and service
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First order error of difference surface equation of logarithmic spiral bevel gear
Expressed as the shape error of logarithmic spiral bevel gear, the vertical distance between each measuring point on the real
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Establishment of reverse engineering model of spiral bevel gear
The machining process of spiral bevel gear is to first establish the theoretical mathematical model, then convert the mathematical model
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Tooth surface reconstruction of logarithmic spiral bevel gear
Based on the idea of reconstructing the real tooth surface of logarithmic spiral bevel gear, the original data points of
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Processing of data points on tooth surface of logarithmic spiral bevel gear
When the complex data of logarithmic spiral bevel gear tooth surface is obtained by laser scanner, the accuracy of data
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Reverse engineering of logarithmic spiral bevel gear
Gear is an important part of mechanical transmission device, which has the characteristics of high efficiency, compact structure, high reliability
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Basic principle of gear hobbing
Gear hobbing is cutting by using the meshing principle of helical gear. The essence of hob is a worm, and
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Insufficient hardness of gear core
The center of carburized gear is required to have a certain hardness. When the hardness is low, the yield point
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Comparative analysis of reverse engineering of non-circular gears
Select the seedling taking track in the seedling taking mechanism of double arm second-order free non-circular gear planetary system pot
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Gear hobbing equipment and its technical development
With a wide range of varieties and specifications, gears are widely used. They are one of the important basic components
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The surface hardness of gear is low after quenching
The low surface hardness of carburized gear will reduce the wear resistance and fatigue resistance of gear, and have an
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Reverse engineering solution of machining parameters of spiral bevel gear machine tool
Spiral bevel gear is widely used in power transmission of aviation, vehicles and machine tools because of its stable transmission
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Uneven carburizing layer depth of gear
The depth of carburizing layer on the gear surface is uneven, resulting in discontinuous performance of different parts. The weak
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Summary of crack failure in heat treatment of spiral bevel gear
Three pairs of spiral bevel gears for reducer were heat treated in the heat treatment processing company according to the
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Material selection and microstructure of hardened gear
Gears used in different machines have great differences in material and heat treatment process due to the differences in stress
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The hardened layer of gear is too shallow
The surface hardness of carburized gear is too shallow, which not only reduces the anti peeling performance of surface hardened
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Data acquisition of tooth surface point cloud in reverse engineering of spiral bevel gear
The so-called “cloud points” data refers to the three-dimensional data of the real object measured by various methods in the
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Tooth cutting test equipment for Hypoid Gear with small number of teeth
The gear cutting test of hypoid gear was carried out on gh-35 gear milling machine in gear laboratory. Gh-35 spiral
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Analysis of Gear Heat Treatment Defects
Gear is the main part of power transmission in all kinds of machinery. During operation, the tooth surface of the
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Excessive carburization of gear surface
Due to improper treatment and excessive carburization, massive and network carbides will appear on the surface of carburized gear. When
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Application of reverse engineering in surveying and mapping of involute cylindrical spur gear
In coal machinery equipment, many gear devices in China are imported from abroad. With the influence of factors such as
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3D reconstruction model of spiral bevel gear reverse engineering point cloud
3D model reconstruction mainly uses the point cloud data on the model surface collected by spiral bevel gear reverse engineering
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Processing of tooth surface point cloud in reverse engineering of spiral bevel gear
The processing of tooth surface point cloud in reverse engineering of spiral bevel gear is a very important process, which
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Research on reverse engineering modeling of spiral bevel gear
Spiral bevel gear is an important part of high-precision equipment. Spiral gear is generally processed by spiral milling machine. Because
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Calculation of axial force of hypoid gear pair
For loaded working side: The axial force fax1d of hypoid gear pinion is: The axial force fax2d of hypoid gear
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Tooth cutting test of hypoid gear with few teeth
Hypoid gears are difficult to manufacture due to the complex tooth surface structure. In this chapter, according to the theoretical
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Technical level of domestic gear heat treatment furnace
Computer technology is applied to the control of domestic heat treatment furnace, which realizes high precision and multi-function. Control accuracy:
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Causes and preventive measures of metallographic structure and heat treatment defects of rear axle gear
1. Defect content Including coarse martensite, excessive retained austenite as shown in figure (a), excessive surface carbides as shown in
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Accurate modeling of hypoid gear pair with small number of teeth and large reduction ratio
Taking the modeling process of small wheel as an example, this paper introduces the modeling process of hypoid gear with
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Research status of spiral bevel gear
Gleason of the United States has always been in a leading position in the world in the design and processing
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Calculation of tangential force of hypoid gear pair
In order to ensure that the working surface of the designed hypoid gear with small number of teeth bears the
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Influence of input torque on dynamic load performance of spiral bevel gear transmission
Other parameters remain unchanged. Under different input torques, the variation of dynamic load coefficient amplitude of spiral bevel gear transmission
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Principle of virtual gear hobbing
As shown in the figure 1, the tool rack pitch line AB is a straight line. During gear hobbing, AB
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Development of gear heat treatment equipment
In addition to the old standard well carburizing furnace, deep carburizing well furnace, sealed box multi-purpose furnace, single and double