Calibration of automobile gear hob
Most of the inherent accuracy of the gear hob can be destroyed. Therefore, if the tolerance of tooth profile is […]
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Scientific
Deviation analysis of parametric modeling for reverse measurement of double circular arc gears
The sources of gear errors are as follows: machining deviation, measurement deviation and wear deviation. In terms of machining, the
Scientific
3D modeling of helical gear
By combining the basic involute equation with the involute in the gear machining coordinate system, the involute curve equation of
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Backlash of automobile gear and gear hob
In general, the tooth side clearance of automobile gear is switched with the matching wheel. It only happens when the
Scientific
Contact stress of spiral bevel gear in limit state
The contact strength is a key link to be considered in the design of spiral bevel gears. The strength calculation
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Comprehensive error inspection of automobile gear parts
The comprehensive error shows the ring gear runout, pitch error, tooth thickness change, tooth profile error and change. The inspection
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Basic parameters of spiral bevel gear
Parameter name Parameter value Tooth ratio 31/26 Large end modulus / mm 8.654 Helix angle / (°) 35 Pressure angle
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Single error detection of automobile gear parts
1. Diameter jump of ring gear The diameter jump of the ring gear of the automobile gear is the value
Scientific
Machining test of bevel gear tooth top trimming
1. Part installation and positioning Install the NC turntable in the middle of the workbench of the vertical machining center,
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Machining error and tool improvement of automobile gear hob
Gear inspection is an important part of gear manufacturing. Lack of inspection and process control will lead to the outflow
Scientific
Test preparation of bevel gear tooth top trimming technology
1. Software preparation The secondary development is carried out on the basis of NX software, and a small plug-in is
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Automobile gear hob material
Almost all auto gear hobs are made of high-speed steel. High speed steel is a tool steel with high hardness,
Scientific
Calculation error of large coincidence degree of spiral bevel gear
According to the relevant provisions of GB / T 11365-2019 standard, the specific accuracy values of spiral bevel gears and
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Accuracy of automobile gear hob
In order to achieve the purpose of standardization, we classify automobile gear hobs according to manufacturing accuracy. The main purpose
Scientific
Fatigue simulation evaluation of hypoid gears with super reduction ratio
The established three-dimensional assembly model of super reduction ratio hypoid gear is imported into the finite element software Ansys Workbench.
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An example of the design of spiral bevel gear with large degree of reconnection
Taking the working surface of a pair of spiral bevel gear pairs that can be paired (in which the large
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Tooth profile of automobile gear hob
In the process of tooth profile generation, the tooth profile of automobile gear hob works in conjugate form. The formation
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Strength failure mechanism of hypoid gears with super reduction ratio
At present, miniaturization, high speed and low consumption are the important development direction of gear transmission parts. Compared with other
Scientific
Preset meshing performance of spiral bevel gear
The main indexes of meshing performance of spiral bevel gears include transmission error, tooth surface impression and design coincidence degree.
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Number of hob heads for automobile gears
Although most automotive gear hobs still have only one head number, multi head hobs have great advantages under appropriate working
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Spiral groove of automobile gear hob
The groove type of automobile gear hob is divided into straight groove and spiral groove. The straight groove is very
Scientific
Calculation of starting and final tangent points of gear hob
The positions of the starting and final tangent points of the gear hob along the tooth axis are shown in
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Driving mode of automobile gear hob
There are generally two ways to install and drive automobile gear hobs. Automotive gear hobs are usually mounted on a
Scientific
Determination of installation position of gear hob
The starting position of gear hobbing tool installation is shown in the figure. End position of tool channeling: LPO /
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Design elements of automobile gear hob
At present, as an efficient gear making process, automobile gear hobbing is widely used in automobile production enterprises all over
Scientific
Selection of cutting path for gear hobbing
Calculate the tool travel according to Hoffmeister’s formula: Where: FA — axial tool path of gear hobbing cutting; H1max –
Scientific
Determination of the shifting length of gear hobbing hob
As shown in the figure, the tool shifting length of gear hobbing hob is calculated according to the following formula:
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Carbide gear hob
Taking accuracy as the basic dimension of gear hob classification, it can be divided into finish machining, semi finish machining
Scientific
Calculation of the length of generating area of gear hob
The calculation method of the length of the generating area of gear hobbing hob is shown in Figure 1. If:
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Carbide gear hob
Due to the high-quality machining characteristics and long tool life of cemented carbide gear hob, it has been explored and
Scientific
Calculation of working length of gear hobbing hob
The cutting process of gear hob should be divided into pre machining area and generating area; Most of the metal
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Multi head gear hob
Multi head gear hob is not a new concept. In the actual production, the experience of using this type of
Scientific
Selection principle of groove number of gear hob
Gear hobbing multi groove hob is shown in the figure. When using gear hobbing multi groove hob, the following conditions
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Gear rough hob
Gear rough hob is mainly used before fine rolling. They are mainly used to process large module gears, with a
Scientific
Influence of the number of hob slots on the tooth profile error of gear hobbing
The selection of gear hobbing multi groove hob has the following advantages: (1) Gear hob has many grooves and good
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Gear semi finish hob
Gear semi precision hobs are mainly used in the hobbing process before shaving or grinding. Hobs of any accuracy grade
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Gear non-standard fine hob
The current trend is that a large number of factories order and use non-standard hobs. Gear hob design engineers can
Scientific
Influence of the number of gear hobs on cutting efficiency
The number of hobs Z0 has an important influence on the machining time In some cases, the use of gear
Scientific
Influence of gear hob diameter on gear surface roughness
The selection of large diameter gear hobbing hob has the following advantages: (1) Under the condition of maintaining the same
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Design theory analysis of automobile gear hob
Based on the actual needs of gear hobbing tools in automobile gear production line, it is transformed into seven elements
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Design theory analysis of automobile gear hob
The gear hob used in the automobile industry is usually the tool for Machining Involute Cylindrical Gear by generating method
Scientific
Influence of gear hob diameter on cutting efficiency
The relationship between the outer diameter of gear hobbing hob and hobbing time Ht is shown in the figure. Where:
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Research status of design theory of automobile gear hob
At present, the production and sales volume of China’s automobile industry has reached more than 22 million through explosive growth,
Scientific
Calculation of main design angles of gear hob
Theoretically, the larger the rake angle of the gear hobbing hob, the smaller the cutting load of the cutter teeth.
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Main development trends of automotive gear cutting tools
Gear is the key basic part of automobile. Most speed change and transmission components in automobile are related to gear
Scientific
Cumulative error of groove circumferential pitch of gear hobbing hob
When the rake face of the chip holding groove is unevenly distributed relative to the center of the inner hole
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Conical gear hobbing tooling
The conical gear is a straight tooth with a module of 5 and a number of teeth of 20. The
Scientific
Original tooth profile angle error of gear hobbing hob
The linear part of the side edge of gear hobbing hob mainly completes the generation of gear tooth profile, but
Scientific
Calculation of Friction Arm on Helical Gear Meshing Surface
According to the change rule of the contact lines on the left and right sides of the pitch line in
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Design of main parts of conical gear milling tooling
(1) bearing pedestal. The design of the bearing seat is shown in Figure 1. This part is the basic part
Scientific
Influence of gear hobbing accuracy on gear machining error
The influence of gear hobbing hob accuracy on machining accuracy is shown in the figure. 100% of the total meshing
Scientific
Formation mechanism of gear hobbing profile error
Gear hobbing processing and application practice show that the manufacturing errors of machine tools, cutting tools and gear blanks are
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Conical gear milling tooling
The conical gear is a straight tooth with a modulus of 5 and a number of teeth of 20. The
Scientific
Stress analysis of gear hob shaft
According to the stress analysis of gear hobbing hob, further analyze the stress of gear hobbing hob shaft, as shown
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Detection technology of meshing area in spiral bevel gear machining and assembly
Spiral bevel gear transmission is widely used in high-speed and heavy-duty gear transmission systems with intersecting transmission of two axes,
Scientific
Cutting pattern and cutting area moment in gear hobbing
The cutting pattern of gear hobbing hob teeth reflects the metal process and tooth profile formation in the cutting groove
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Analysis of random vibration and friction characteristics of spur gear pair
Vibration characteristics of spur gear pair based on the randomness of error and tooth surface friction: (1) Using the method
Scientific
Vibration caused by automobile gear assembly error
The speed of driving wheel is 1200 R / min, the meshing frequency of automobile gear is 160 Hz, the
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Analysis of vibration characteristics of spur gear pair considering the randomness of error and tooth surface friction
With the development of spur gear transmission system towards high speed and high power density, how to solve vibration and
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Finite element analysis of contact characteristics of helical gears
Helical gear has the characteristics of good meshing performance, large coincidence degree and compact structure, resulting in less impact vibration