In the process of large production, the piston rod is mainly based on the accumulated technology to ensure high precision in the outer diameter tolerance, straightness, circumference and surface roughness of the shaft. The outer diameter tolerance of the piston rod has an appropriate gap for the allowable tolerance of the diameter of the diameter line bearing. However, in the case of precision motion, the tolerance of the solid shaft must be adjusted so that there is no gap or some slight pressure. If the straightness or circumference of the shaft is not good, periodic pressure on the solid shaft or linear bearing will not only achieve smooth linear motion, but also shorten the life, so pay attention to the choice of linear optical axis.
The piston rod is rolled to improve the surface corrosion resistance and delay the generation or expansion of fatigue cracks, thereby improving the fatigue strength of the cylinder rod. By rolling forming, the rolling surface forms a cold hardening layer, which reduces the elastic and plastic deformation of the grinding contact surface, thereby improving the wear resistance of the cylinder rod surface and avoiding burns caused by grinding. After rolling, the surface roughness value is reduced to improve the compounding property. At the same time, the friction damage to the sealing ring or the sealing member during the movement of the cylinder rod piston is reduced, and the overall service life of the oil cylinder is improved. The rolling process is an efficient and high quality process.
The rolling surface forms a cold hardening layer, which reduces the elastic and plastic deformation of the grinding contact surface, thereby improving the wear resistance of the cylinder rod surface and avoiding burns caused by grinding. After rolling, the surface roughness value is reduced to improve the compounding property. At the same time, the friction damage to the sealing ring or the sealing member during the movement of the cylinder rod piston is reduced, and the overall service life of the oil cylinder is improved.www.xhychromerod.com