The form of pipe-cutting machine oil leakage.

The principle of the pipe-cutting machine is to cooperate with the air to push the oil, and the electrical system controls the movement direction of the air pressure system to push the oil circuit to do a linear reciprocating motion. Control and change Qi. The oil circuit moves to achieve the desired toolpath.

The oil leakage of the pipe-cutting machine mainly includes crevice oil leakage, porous oil leakage, adhesion oil leakage, power supply oil leakage, etc.

(1) Gap leakage: refers to the leakage caused by the hydraulic oil flowing in the gap under the action of the pressure difference between the two ends, such as the gap between the top of the vane pump and the inner surface of the stator; the gap between the piston of the hydraulic cylinder and the inner wall of the cylinder hole, etc. Leakage is the main form of leakage of hydraulic components, and the amount of leakage is related to the pressure difference at both ends of the gap and the viscosity of the liquid. , and the length, width, and height of the gap.

(2) Porous oil leakage: refers to the leakage of hydraulic oil through these pores due to the influence of the surface roughness of various cover plates and flange joints of hydraulic components. This kind of leakage is caused by the loose structure of the casting, the inclusion of weld defects, and the presence of capillary pores in the sealing material.

(3) Adhesive oil leakage: It refers to the certain adhesion between the viscous hydraulic oil and the solid surface. After the two contacts, a layer of hydraulic oil adheres to the solid surface. When the liquid layer is too thick, droplets will form and be scraped off by the seal ring. Glue leakage occurs. Such as the leakage caused by the expansion and contraction of the piston rod of the hydraulic cylinder.

(4) Power supply oil leakage: It refers to the leakage of hydraulic oil flowing along the spiral groove under the action of the rotating force of the rotating shaft. For example, the leakage caused by the processing marks on the seal lip of the transmission shaft, the higher the shaft speed, the greater the leakage.