Technological normal curvature and short-range torsion of spiral bevel gears
The obtained normal curvature and short-range torsion Aa1, BA1 and CA1 are along the direction of EA1 and TA1. Let […]
Scientific
News
Comprehensive measurement method and technology of large gear
The comprehensive measurement method and technology of large gears are still developed from the comprehensive measurement of medium and small
Scientific
Tooth surface equation of parallel shaft pure rolling gear
Taking the points on the contact lines R1 and R2 as the coordinate origin and the base vectors of fixture
News
Measurement of large gear with side gauge
The side measuring instrument is positioned and installed on the machine tool (generally installed on the tool holder) to realize
Scientific
Prospect of spiral bevel gear NC Machining Technology
Because the research idea is novel, the electromechanical combination involves a wide range, and needs solid mathematical theoretical knowledge, especially
Scientific
Establishment of conjugate contact line for parallel shaft pure rolling internal meshing line gear
Establish the space right-handed coordinate system, as shown in the figure. The installation center distance of linear gear pair is
News
Measurement of large gear with top mounted measuring instrument
Aiming at the limitations of desktop measuring instrument, the upper measuring instrument has a great change in the measurement idea.
Scientific
Improvement measures and validity verification of forging crack of a fuel gear pump shell
According to the cause analysis of the shell forging crack, the forging deformation is increased by increasing the forging process,
News
Desktop instrument for measuring large gears
Desktop instrument the desktop measuring instrument used for large gear measurement is basically the amplification of the desktop measuring instrument
Scientific
Principle of combined measurement for super large gear
The combined measurement network of super large gear includes laser tracker and its measurement system, flexible joint coordinate measuring arm
News
Principle and technology of on machine measurement of large gear
Gear is famous for its complex shape all the time, and its various error inspection items are not only various,
Scientific
Finding the proper measuring ball diameter of helical gear
Diagramming the imaginary circle diameter DPT of helical gear measuring ball The figure is a diagram of the imaginary circle
News
Common methods to solve gear contact problems
The establishment of the mechanical model simplified the gear tooth as a cantilever beam, and the contact state under load
News
Tooth loaded contact analysis (LTCA) has become an important gear design technology
With the development of machinery industry, the gear transmission with compact structure, long life and suitable for heavy load and
Scientific
The conversion formula for calculating the diameter of measuring ball of helical gear end profile
The figure shows the geometric relationship of the measuring ball in the alveolar. The N-N section is the normal section
News
Gleason system is the main system of spiral bevel gears in China
Gleason system is the main spiral bevel gear produced and used in China. Gleason gear technology has been the research
Scientific
Tooth profile drawing and auxiliary line drawing of helical gear end face
It is known that the parameter of an external cylindrical helical gear is Mn = 5, α n= 20 °，
Scientific
Geometric Model of NC Machine tool for Spiral Bevel Gear
According to the spiral bevel gear CNC machine tool of Gleason Company, the geometric model of the CNC machine tool
News
Spiral bevel gear is widely used at present
Spiral bevel gear has been widely used in aviation, automobile, shipbuilding, engineering machinery and many other industrial fields. Spiral bevel
Scientific
Effect of applied torque on vibration of cylindrical gear pair
In order to study the influence of different applied torques on the vibration characteristics of gear pair and keep other
News
Tooth surface contact of spiral bevel gear based on genetic algorithm
The transmission performance of spiral bevel gear pair 1 is mainly manifested in the angle of tooth surface contact trace,
Scientific
Influence of helix angle on vibration of cylindrical gear pair
In order to study the influence of different helix angle on the vibration characteristics of gear pair, keeping other parameters
Scientific
Influence of tooth thickness deviation on vibration of cylindrical gear pair
In order to study the influence of tooth thickness deviation on the vibration characteristics of gear pair and keep other
News
Load bearing characteristics of large gear rotor of integral multistage centrifugal compressor
Integral multistage centrifugal compressor is widely used in energy, air separation and chemical industry due to its compact structure, strong
News
Noncircular gear of a stepless transmission mechanism
Circular gear is a kind of special gear parts, its pitch curve is not circular, so the speed ratio of
Scientific
Influence of tooth thickness deviation on vibration response of gear pair
With the help of ANSYS / LS-DYNA, the finite element model of gear meshing pair is solved, and the gear
Scientific
Influence of tooth thickness deviation on meshing stiffness and transmission error of gear pair
The time-varying meshing stiffness excitation and the transmission error excitation are two very important excitations in the actual operation of
News
Parallel shaft pure rolling internal meshing line gear
Due to the complex tooth profile of traditional industrial gears, it is very difficult to miniaturize and micro nano application.
Scientific
Establishment of vibration characteristic model of cylindrical gear pair considering tooth thickness deviation
Because the backlash of gear pair is usually realized by controlling the tooth thickness deviation, there must be a certain
News
Failure analysis and Discussion on forging of a fuel gear pump shell
The crack is located in the middle of the shell and at the root of the processed 8-shaped hole. The
News
Spiral bevel gear sharp tooth scraping cutter head
The scraping cutter head for hard tooth surface of spiral bevel gear is a direct tool for scraping processing. Its
Scientific
Establishment of numerical model for pitting corrosion process of gear in lubrication contact
Based on ABAQUS software, contour integral and MTs criterion are used to simulate the process of pitting corrosion crack propagation
News
Analysis on forging crack of a fuel gear pump shell
Fuel gear pump is a kind of product that relies on the change of working volume formed between the pump
News
Selection of cutter face form of scraping cutter head for spiral bevel gear
A Rake face selection Generally, tool regrinding is carried out on the rake face. The scraping cutter head is a
News
Precision improvement of laser tracking measurement for super large gear
In industry, the gear with diameter over 3000mm is called super large gear, which is the most widely used transmission
Scientific
Analysis of experimental results of shearer rocker gear fault
The vibration data of each state of gear under 50% load is selected for experiment, and the sample length is
News
Calculation of chord tooth thickness and chord tooth height of double circular arc gear drive by Newton iteration method
Our country began to study the double circular arc gear from the mid-1960s, but entered the substantive research, test and
Scientific
Fault data acquisition of shearer rocker gear
The working environment of shearer is bad, and the gear fault data of rocker transmission system is not easy to
Scientific
Prediction of RBF neural network model for planetary gear
1. Training data validation The 90 groups of trained samples are predicted by the RBF neural network established. Fig. 1
News
Using CAXA to figure out the proper measuring ball diameter of helical gear
In the manufacture, inspection and design of gears, the span of measuring ball is widely used to measure the tooth
News
Formation mechanism of micro pitting corrosion of gears and normal and tangential load conditions
Under the condition of non lubrication, according to Hertz theory, the contact geometry of gear tooth surface can be transformed
Scientific
Influence of speed and load on meshing force and frequency coupling of planetary gears
The rotational speed of P10 row is set at 3 000 R / min, and the load of P20 row
News
Spiral bevel gear is the most widely used spiral gear in production
Spiral bevel gear is the most widely used spiral gear in production. Because it has the characteristics of stable transmission,
News
Formation mechanism of micro pitting corrosion of gears
In the process of gear transmission, the maximum shear stress caused by repeated rolling sliding contact leads to the plastic
Scientific
Expression of meshing force of parallel planetary gears
The connection form of parallel coupling planetary gear is shown in Figure 1, and each row has two parts connected.
Scientific
Floating track of sun gear in planetary gear transmission system
Under the same basic working condition, the floating track of the sun wheel under three kinds of fault factors is
News
Micro pitting damage of lubricated contact gear based on contour integral
In the process of gear transmission, if it can not get good lubrication, a lot of micro pitting corrosion pits
Scientific
Dynamic analysis of planetary gear transmission system with sun gear failure factors
1. Simulation of planetary gear transmission system under fault free condition Using the established planetary gear dynamic model, when all
News
Residual life prediction of gear based on deep belief network integration
Due to the influence of alternating stress, the gears in many equipment often have the faults of tooth surface wear
News
Fault diagnosis of shearer rocker gear based on depth residual network
Shearer is one of the core equipment of coal mining face. Rocker arm is the key power component of shearer
Scientific
Fatigue crack life analysis of internal meshing modified gear
After the completion of the first propagation, the stress intensity factor is calculated, and the second crack propagation is carried
News
Gear fault diagnosis based on multi scale fuzzy entropy
As a common part of mechanical equipment to transmit power and motion, gearbox has been widely used in modern mechanical
Scientific
Life analysis of internal meshing modified gears with cracks
ABAQUS software and FRANC3D software will be used to analyze the fatigue life of internal gear plate crack [4-6]. The
Scientific
Finite element analysis of internal modified gear
Because the working condition of the gear is the same when the inner gear plate and the outer gear contact
News
Establishment of RBF neural network prediction model for planetary gear
1. Input and output of neural network The analysis of meshing force of parallel coupled planetary gear includes five factors:
Scientific
Dynamic analysis of internal modified gear
According to the mechanical model of internal gear pair and gear dynamic model, the dynamic model of internal modified gear
News
Dynamic meshing force analysis of parallel planetary gear based on RBF neural network
The coupling phenomenon of meshing force often appears in the dynamic response of coupled planetary gears. In previous scholars’ research,
Scientific
Establishment of internal modified gear model
The three ring drive mainly adopts the internal meshing angle modified gear, so the construction method of modified gear is
News
Design and Simulation of tractor gear system
Dongfanghong tractors produced by Luoyang No.1 tractor manufacturing plant of China are very important traction equipment for farming, harvesting and
Scientific
Experimental data validation of planetary gearbox
The effectiveness of arcmde features is verified by using the fault simulation experimental data of planetary gearbox. As shown in