The piston rod can be used in hydraulic startup when it is in use. The processing requirements of its products are relatively high, so the quality of the hydraulic cylinder is mostly influenced by the quality of the piston rod. The piston rod is the connecting part that supports the work of the piston. Most applications Among the oil cylinder and cylinder motion execution parts, it is a moving part with frequent movements and high technical requirements.
The processing quality of the piston rod directly affects the life and stability of the entire product. The processing requirements of the piston rod are high, the surface roughness of the veneer repair machine is Ra0.4-0.8um, and the requirements for coaxiality and wear resistance are strict.
Although the piston rod does not want to bear radial force from the design point of view, it will be directly limited by the actual structure during use, and the piston rod of the hydraulic cylinder will bear a considerable part of its radial external force. For this purpose, the length of the hydraulic cylinder piston must be appropriate.
The piston rod is used to increase its guiding effect and increase the bearing surface area, so as to reduce wear and increase the service life of the hydraulic cylinder. The quality of the hydraulic cylinder almost depends on the quality of the piston rod. Therefore, the machining of the piston should require precise geometric tolerances. .
Generally speaking, the error of the outer diameter of the piston, the roundness of the inner hole and the cylindricity should not be greater than half of its dimensional tolerance; the tolerance of the outer diameter of the piston rod to the inner hole and the concentricity of the sealing groove should be within 0.02mm. It is generally required that the verticality tolerance of the end of the hydraulic cylinder to the axis of the hydraulic cylinder should be less than 0.04mm/100mm.
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