Structural form of cylinder

The cylinder is composed of a cylinder barrel, an end cover, a piston, a piston rod and a seal, and its internal structure is as shown in the figure:

Schematic diagram of SMC cylinder

1) cylinder barrel

The inner diameter of the cylinder represents the output force of the cylinder. The piston should slide back and forth smoothly in the cylinder, and the surface roughness of the inner surface of the cylinder should reach Ra 0.8 micron. ..

The pistons of SMC and CM2 cylinders adopt combined sealing rings to realize bidirectional sealing, and the pistons are riveted with piston rods without nuts.

2) End cover

The end covers are provided with air inlets and air outlets, and some end covers are also provided with buffer mechanisms. The end cover on the rod side is provided with a sealing ring and a dustproof ring to prevent air from leaking from the piston rod and prevent external dust from mixing into the cylinder. The guide sleeve is arranged on the rod side end cover to improve the guiding accuracy of the cylinder, bear a small amount of lateral load of the piston rod, reduce the downward bending of the piston rod when it is extended, and prolong the service life of the cylinder. Guide sleeves are usually made of sintered oil-bearing alloy and inclined copper castings. Malleable cast iron is usually used for end caps. In order to reduce the weight and prevent rust, aluminum alloy die casting is often used, and the miniature cylinder is made of brass.