As the name suggests, the piston rod is the connecting part that supports the piston to do work. Most of them are used in the cylinders and cylinders. It is a moving part with frequent movements and high technical requirements. Taking the hydraulic cylinder as an example, it consists of cylinder barrel, piston rod (cylinder rod), piston and end cover. The quality of its processing directly affects the life and reliability of the entire product. The processing requirements of the piston rod are high, and the surface roughness requirement is Ra0.4～0.8um, and the requirements for coaxiality and wear resistance are strict. The basic feature of the cylinder rod is the processing of the slender shaft, which is difficult to process and has always troubled the processing personnel.
