The basic composition and principle of a general FESTO cylinder

The basic composition and principle of a general FESTO cylinder

FESTO cylinders can also compromise their speed and reliability during operation due to the size of the load. Generally, limit switch blocks are used to adjust the stroke arrangement of cylinders, and oil pressure buffers are used to reduce impact force when shifting gears. Therefore, the assembly of this set of cylinders is a bit complicated to construct. Secondly, pneumatic sealing is an important part, as the sealing ring is very prone to embrittlement and damage. The usage period depends on the natural environment and application frequency.

1、 First, let's talk about the basic structure and principle of a general FESTO cylinder:

Composition: engine cylinder block, piston, sealing ring, magnetic core (cylinder with sensor);

Principle: The working pressure gas causes the piston to move, and the movement direction of the piston rod is changed according to the change of the intake port orientation; Invalid method: piston stuck, not in position; The cylinder is weak, the sealing ring is damaged, and there is steam leakage.

2、 The construction and working principle of FESTO cylinder:

Taking the most commonly used single piston rod dual effect cylinder in FESTO as an example, it is composed of cylinder liner, piston, piston rod, front cover, rear bearing end cover, and hydraulic seals. The dual function cylinder is divided into two chambers by the piston inside. A cavity with a piston rod is called a rod cavity, and a cavity without a piston rod is called a rodless cavity.

When air is compressed from the FESTO cylinder, there is a rod chamber exhaust pipe, and the pressure difference effect of the second chamber of the cylinder releases the frictional resistance load on the piston, promoting the piston's fitness movement and causing the piston rod to extend outward; When there is a rod chamber air inlet and no rod chamber exhaust pipe, retract the piston rod. If there are rod chambers and rodless chambers replacing the intake and exhaust pipes, the piston completes reciprocating uniform linear motion.

3、 The construction and working principle of FESTO cylinders in mechanical equipment:

The structure of the FESTO cylinder for mechanical equipment is shown in the following figure. There is a groove in the radial direction of the cylinder tube, and the piston and guide rail slider move at the upper end of the groove. In order to better avoid leakage and prevent contamination, polyurethane rubber gaskets and anti fouling stainless steel strips are used to fix the opening on both sides of the FESTO cylinder head. The piston frame passes over the groove and connects the piston with the guide rail slider as a whole. The piston is connected to the guide rail slider, pushing the actuator fixed on the guide rail slider to complete repeated movements.

It is a stainless steel cylinder liner with a strong magnetic piston inside. There is a sealing ring on the piston, but no cylinder swing rod. There is also a set of strong magnetic sleeves outside the cylinder liner, which attract each other inside and outside, producing synchronized exercise inside and outside. It is called a magnetic coupling rodless cylinder, and the advantage of this type of cylinder is that it has a large stroke arrangement. The speed is faster, but the drawback is that the magnetic force is relatively limited, making it difficult to produce rodless cylinders with high thrust and tensile strength. The manufacturing cost is high.

The general benefit of FESTO cylinders is their high cost-effectiveness and common use. Low cost, technologically advanced. The torque is large, and large and medium-sized cylinders can achieve several tens of tons. The drawback is that the slide rail cannot withstand large lateral forces and needs to be used in conjunction with the slide rail. Cylinders are all operated by relays or pneumatic control valves to control the telescopic posture. Due to the variability of high-pressure gases, cylinders cannot be operated with high precision. They are easy to use in places where the requirements are not too high. Cylinders consume high-pressure gases during operation. Therefore, air compressors are energy consuming machinery and equipment, and they continuously work to ensure the stability of standard air pressure.