The optimization problem in forging process includes two aspects: first, analyze the optimization design problem and establish the corresponding mathematical […]
In precision forging process, die technology is closely related to the performance, accuracy and processing mode of parts. The development
The large gear of converter secondary reducer is the tilting of converter and the main bearing component in the process
The forming and filling of spiral bevel gear is complex. The process analysis of forging should focus on the plastic
In the original process, the forged gear blank is directly air cooled to room temperature after forging, and then rough
Programmed and calculated under Matlab, when the number of coordinate points of involute working tooth profile of reference tooth is
The level of gear precision forging technology represents the development of a country’s manufacturing industry to a certain extent. The
The schematic diagram of the eccentric gear non-circular gear planetary system transplanting mechanism is shown in Figure 1. The relative
The transplanting mechanism is the core working part of the rice transplanter, which realizes the action of transplanting and transplanting.
In the process of gear blank forging, due to the cylindrical upsetting effect of the blank, the contact area between
In order to further improve the machining efficiency of rough cutting soft tooth face gears with straight edge tools, Dr.
Precision forging technology has obvious advantages: low cost, high efficiency, energy and material saving, high precision and so on. There
Taking the forging of a large gear blank as an example, the forging drawing is shown in Figure 1, with
Hypoid gear is a key part in the transmission system of automobile drive axle. Its tooth surface meshing quality directly
Face gear drive is a transmission mechanism in which involute cylindrical gear (small wheel) meshes with bevel gear, as shown
Involute ring gear ball gear is a new type of gear mechanism, which plays a key role in realizing multi
According to the comparative analysis of the four schemes in Figure 1, Φ 100mm bar has the best forming effect
The workpiece processed by precision forming technology can meet the requirements of parts with little or no processing, so precision
Ball gear is a new type of gear transmission mechanism. The flexible wrist mechanism of painting robot developed by trallfa
The main reference standards for evaluating the final forming quality of gear blanks are as follows: (1) The hub part
The setting of finite element preprocessing is very important, which not only determines whether the spiral bevel gear can converge
With the continuous development of the world automobile industry, the machining technology of spiral bevel gear is also changing, and
Spiral bevel gear transmission mainly transmits the motion and power between vertical shafts, which requires the existence of bevel gear
A gear blank requiring precision forging is studied. The number of teeth of the gear is 29 and the diameter
Spiral bevel gear is mainly used in high-speed and heavy-duty staggered shaft transmission. The gear pair has compact structure and
In the traditional forging production, the material is fed manually and positioned by relying on the positioning block with simple
At present, this spectrum analysis method based on the envelope of the signal generated by high-frequency impact excitation has been
The steering system is an important part of the vehicle safety system. The steering shaft tooth is a core part
The shearer needs to work in the underground roadway of the coal mine, and its working environment is poor. An
Firstly, the cold rotary forging precision forming process of bevel gear is systematically studied. This paper makes a systematic theoretical
The stress released in the grinding process of gears generally comes from two aspects: one is the residual stress formed
In order to improve the machinability of gears for transmission and stabilize the final heat treatment deformation, a company purchased
According to the above inspection results, the cracking of steel gear tooth surface is caused by contact fatigue caused by
In recent years, the research and application of CAD / CAPP Technology in gear mostly focus on the design of
The gear material of the failed rolling mill is 17CrNiMo6 steel, the modulus Mn is 9mm, the carburizing and quenching
Produced by a company φ 2100mm large forged gear blank with a weight of 6000kg was found to be cracked
Bevel gear is widely used in mechanical transmission, especially in automobile transmission mechanism. The traditional bevel gear processing adopts the
Velocity field is a vector to measure the flow of material in the process of plastic deformation. Through the observation
The rolling mill gear shaft with grinding cracks is made of 17CrNiMo6 steel, the modulus Mn is 18mm, the carburizing
Gear is an important basic part of mechanical products. Gear grinding is a finishing process of gear processing. Gear grinding
Swing rolling, namely swing rolling, also known as axial rolling, is a new plastic processing technology gradually and widely used
1. Processing with Norton 3SG60 grinding wheel (1) rough grinding: the 1st ~ 3rd cutters are in the form of
Figure 1 shows the driven bevel gear of rear axle in 46910 / 37 commercial vehicle. It can be seen
The general plastic precision forming process is precision die forging, which is a less cutting process gradually developed from general
The precision forging process of spiral bevel gear generally has some problems, such as difficult forming, difficult cavity filling, low
Taking the transmission gear of heavy equipment as the research object, the fatigue crack propagation and fatigue fracture of gear
In the process of EDM, the electrode will have a certain amount of burning loss, which will change the electrode
For the finish machining of hardened cylindrical gears, gear grinding technology is a common choice at present. On the premise
The model used for the numerical simulation of gear bending fatigue is the same as that used in the bending
Hypoid gear is widely used in aviation, automobile and other fields. As an important index to predict its dynamic performance,
When rolling the thick cylinder of the pier, the relationship between the feed rate s per revolution and the average
1. Technical analysis of forging process In offshore engineering, the requirements for large herringbone gears are relatively high. The original
When testing the bending fatigue of 42CrMo heavy equipment transmission gear by experimental method, the data results have obvious advantages,
The feed rate per revolution of the cone die is the reduction amount per revolution, which is the reduction amount
Before the formal bending fatigue test, the load level of the test needs to be determined. Pick two from the
For the five kinds of swing head motion trajectories in the figure, they are analyzed one by one as follows:
The bending fatigue characteristic curve and bending fatigue limit stress of the test gear shall be combined according to different
1. Advantages of large herringbone gear in aviation and ocean engineering The diameter of large gears used in aviation and
The motion track of the swing head refers to the projection track of any point on the axis of the
Figure 1 shows the front view of the temperature field on the single tooth profile surface and the middle section
