What is the cylinder mainly made of?

The cylinder is a pneumatic actuators, generally a cylindrical metal part. It consists of a cylinder, an end cover, a piston, a piston rod and a buffer device. When working, the piston is used to increase the air pressure, and then the pressure of compressed air is converted into mechanical energy, and the driving mechanism does linear reciprocating motion, swinging and rotating motion. Let's introduce the working process of the cylinder, so that we can understand the structural principle of the cylinder. 1. What are the cylinders mainly made of?

Cylinder is a cylindrical metal part that guides the piston to do linear reciprocating motion in the cylinder. It is a pneumatic actuator that converts the pressure energy of compressed gas into mechanical energy. The cylinder mainly includes:

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 connection methods between the cylinder and the end cover mainly include integral type, riveted type, threaded type, flange type and pull rod type.

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.

3. Piston

The piston is a pressure-bearing part in the cylinder. In order to prevent the left cavity and the right cavity of the piston from forming a channel with each other, a piston sealing ring is provided. The wear ring on the piston can improve the guidance of the cylinder, reduce the wear of the piston sealing ring and reduce the friction resistance.

4. Piston rod

The piston rod is also an important mechanical part in the cylinder. High carbon steel, hard chromium plating or stainless steel are usually used to prevent corrosion and improve the wear resistance of sealing rings.

5. Buffer device

Buffer device is an important component to ensure the service life of cylinder. Without the buffer device, when the piston moves to the end, it will hit the end cover with great kinetic energy, and the parts will be damaged soon.

Second, what is the working principle of the cylinder?

The cylinder is composed of cylinder, end cover, piston, piston rod, buffer plunger and buffer throttle valve. The specific working principle is as follows:

When the cylinder is working, the air pressure is increased by the piston, and then the pressure of compressed air is converted into mechanical energy through air pressure transmission, and the driving mechanism does linear reciprocating motion or swinging and rotating motion. The specific process is as follows:

Input compressed air into the rodless cavity and exhaust the rodless cavity. The pressure difference between the two chambers of the cylinder and the force acting on the piston push the piston to move and make the piston rod extend. When there is air intake in the rod cavity and no air exhaust in the rod cavity, the piston rod retracts. If there is a rod cavity and a rodless cavity alternately intake and exhaust, the piston can do linear reciprocating motion or rotary motion.