Analysis of load stroke curve in precision forming process of spur gear
The load stroke curves of the two processes are shown in the figure. It can be seen from the figure […]
The load stroke curves of the two processes are shown in the figure. It can be seen from the figure […]
The traditional and improved processes are used for experimental study. The typical deformation conditions of the blank during the deformation
In this paper, the first mock exam of the internal gear of a solid cylinder with no hub hub and
The traditional closed die forging of internal gear is shown in figure (a). In the process of pressing the blank
With reliable transmission quality and efficiency, gears are widely used in mechanical field, especially in military industry, aerospace and other
The figure is the confusion matrix corresponding to the method in this paper, through which the identification of each type
Gear is of great significance to all kinds of mechanical equipment. Its performance may directly affect the service life and
In order to verify the advantages and effectiveness of intelligent fault diagnosis of gearbox bearing based on Sanc and 1d-cnn,
The parameters of neural network mainly include: learning rate, cost function, activation function, number of learning rounds, batch size, network
In order to verify the effectiveness of the proposed method, the experimental study is carried out on the zjs50 comprehensive
Combined with the signal separation ability of Sanc and the intelligent feature extraction and fault identification ability of 1d-cnn, this
Combined with the signal separation ability of Sanc and the intelligent feature extraction and fault identification ability of 1d-cnn, this
Gear reducer is a kind of closed mechanical transmission device. Its main function is to reduce the speed of input
The data in normal working state is selected as the training set of the model, with a total of 12800
LSTM principle LSTM model is a special form of recurrent neural network (RNN), which can mine the relationship between the
Data preprocessing The data comes from the unit operation data recorded by SCADA system of a wind farm in Northwest
As an important part of wind turbine, gearbox is mainly composed of gear, rolling bearing and other parts. The common
In order to verify the superiority of this method in engineering application, relevant tests are carried out on the closed
When multiple faults coexist, different fault features need to be decomposed into different intrinsic mode functions. Therefore, EEMD is needed
In the process of tractor gear transmission, the transmission load is large, the running speed is low, and the transmission
As the most commonly used mechanical transmission components, gearbox faults are very common, including gear faults, bearing outer ring, inner
Gearbox has the advantages of compact structure and high transmission efficiency, which is the most widely used transmission component at
Because the wind turbine often works in the harsh environment, the number of units is too much, so the fault
According to the analysis of the forming process of the mechanical gear forging parts, there are two main forming processes
In order to further verify the effectiveness of this modification method, the optimized gear is assembled on the transmission for
Gear modification has great influence on the vibration and noise of gear and the load distribution on the tooth surface.
There are some defects in the process of die forging, such as insufficient mold filling and cracks. In order to
Taking the gear transmission mechanism of a five speed transmission as the research object, the gear transmission mechanism model of
Gear is the most common power transmission mechanism used in various types of transmission. It has the advantages of strong
As an important transmission system of mechanical equipment, mechanical gear has the advantages of high transmission efficiency, high transmission precision,
Although the conventional design can meet the requirements of transmission function, the design scheme is not the optimal design scheme
Due to the advantages of small volume, large transmission ratio, strong bearing capacity and high efficiency, planetary gearbox is widely
Because planetary gearbox has larger transmission ratio and higher load efficiency than traditional fixed shaft gearbox, it is widely used
Wind energy is a kind of clean and renewable energy, which develops rapidly in recent years, and the installed capacity
The transmission scheme is determined according to the technical requirements for the reducer. The transmission schematic diagram and assembly drawing
Gear as the transmission device of mechanical equipment, its health has a great impact on the stability and life of
Put the two standard S-N curves together, the abscissa is the number of stress cycles, the ordinate is the contact
The rudder plays an important role in the control of flight direction and attitude. The reducer of steering gear mainly
In the calculation of the two standards, the calculation service factors of the two factors are involved. In the international
20mncr5 hardenability alloy steel, which is commonly used in Europe and China, is selected as the material for tractor gearbox
In the gear standard design of American Standard ANSI / AGMA 2001-d04 and international standard ISO / TS 6336-2, the
The cutting of spiral bevel gear is carried out according to the principle of “imaginary flat top gear”. As shown
As the core component of mechanical transmission system, planetary gearbox is widely used in various mechanical equipment. Due to the
Bevel gear is widely used in vehicle differential, machine tool transmission box and other transmission machinery. The non-circular bevel gear
In the process of gear machining, it is often affected by geometric eccentricity and motion eccentricity, and causes corresponding gear
Gear shaving cutter has a very important impact on the machining accuracy of gears. Therefore, the relevant technical operators need
The machining accuracy of gear blank is very important for the final gear machining accuracy improvement. Therefore, in order to
The signal f is decomposed into k IMF components, each of which is a finite bandwidth with different center frequency.
For the improvement of gear machining accuracy, it is necessary to control and manage the related processes of gear machining
Gearbox is the core component of transmission machinery. Due to its high working intensity and complex environment, faults often occur.
In the gear processing process line, the corresponding processing technology of different parts is not the same, which requires the
At present, gear processing technology has developed a perfect processing line, and the quality and output of gear processing has
As the key component of power transmission of mechanical equipment, gearbox is widely used in wind power, automobile, aviation and
Wu Jiateng et al. Proposed a new analytical finite element method to solve the time-varying meshing stiffness of tooth root
Sun Huagang and others used ANSYS finite element method to obtain the comprehensive meshing stiffness under different crack positions. The
The crack of gear directly affects the time-varying meshing stiffness, and then affects the vibration response characteristics and dynamic characteristics
Gear cracks are mainly divided into root cracks and indexing circle cracks. In 2009, chaari et al. Proposed for the
As the key component of power transmission of mechanical equipment, gearbox is widely used in wind power, automobile, aviation and
Gear transmission system, as a device for transmitting motion and power, has been widely used in various machines and mechanical
Causes of gear cracking The pitch drive system is placed in a high altitude, and the planetary gear of pitch