In the “one fire two forging” process for forming bevel gears, the tooth profile of hot forgings is obtained by considering the thermal expansion of forgings on the basis of the tooth profile of room temperature forgings. Therefore, the tooth profile of room temperature forgings should be designed before...
The precision forged bevel gear tooth surface can be directly applied without machining. It requires that the precision forged gear tooth surface has high dimensional accuracy, so the tooth shape design plays a very important role in the precision forging of bevel gear. There are two main difficulties in...
1.Establish involute tooth profile curve equation The theoretical tooth profile curve of spur bevel gear is spherical involute. Because the spherical involute cannot be expanded into a plane, it brings great difficulties to the three-dimensional modeling of bevel gear. Based on the theory of back cone, the equation of...
For precision die forging, it is very important to remove the oxide skin on the bevel gear blank and forging surface. The following describes several common methods to remove the oxide skin on the surface of bevel gear blanks and forgings. According to the use requirements of bevel gears...
The open die forging of bevel gear with friction press can not ensure that each tooth shape cavity can be fully filled at one time, that is, the yield is low, and the flash must be removed and then forged again. Therefore, the open die forging of bevel gear...
In the hot precision forging of bevel gears, the selection of preform shape and size is very important. It not only affects the tooth forming, but also affects the internal quality of forgings and the service life of forging dies. The following factors need to be considered in the...
When the bevel gear is formed by “one fire two forging” process, the shape and size of preform, pre forging and die cavity size parameters are the main factors affecting whether the metal can fill the die cavity smoothly. Reasonable design of the shape and size of the straight...
Zhangyane of Shandong University estimated the forming force of forged half shaft gear and planetary gear, and used Defrom-3D to carry out numerical simulation on the process of precision forging planetary gears with different preformed reduction sizes, analyzed the stress, strain, strain rate, velocity distribution and load stroke curve...
In the 1950s, the former Bayer light metal company of West Germany took the lead in using the precision die forging method on the friction press to replace the original machining method to manufacture the bevel gear and obtained the patent right of this technology. The precision forged gear...
By using the moment area method, the deformation of the bevel gear blank when machining the tooth groove in the middle of the bevel gear blank is obtained. In the finite element analysis of the bevel gear blank, it can be seen that the calculated result is the average...