Different requirements for different working methods of the piston rod

The piston rod can improve the anti-fatigue strength of the cylinder rod, especially the surface of the piston rod after hydroforming and rolling will form a relatively hard cooling layer, which can reduce the damage caused by grinding contact with the surface. The phenomenon of plastic deformation is caused, which greatly improves the wear resistance of the surface of the cylinder rod, and also effectively avoids burns caused by grinding.
The working method of the piston rod is actually a reciprocating movement. In order to effectively improve the service life of the piston rod and reduce the amount of wear of the piston rod, we will choose the structure of 38CrMoAlA alloy steel as the rough material of the piston rod, because the whole production type All belong to mass production. In order to effectively improve the efficiency of the entire production, we can use free forging to produce blank materials. We can also according to the assembly and technical requirements of the piston rod, the left and right ends of the piston rod and the center hole In fact, many parts on the surface of parts can use both ends as the main datum to complete the processing, which can not only effectively avoid the transformation of datum error, but also follow the unified words of the datum well, but The central axis between the two axes must be the basis for the entire design.
Choosing the central axis as the benchmark is mainly to ensure the positional accuracy of the surface after machining, and to realize the errors in design and process, because the two axes are required to be uniform and have a small margin when finishing. , so we can use itself as the main reference point.