What are the advantages of double-rod Pneumatic cylinder? Calculation of thrust for double-rod Pneumatic cylinder
What are the advantages of double-rod Pneumatic cylinder?
The double-rod Pneumatic cylinder can also be called the double-shaft cylinder, and it is equipped with two piston rods inside. This type of Pneumatic cylinder guide part uses very short copper sleeves to prevent jamming. The double shafts have a large floating space. The two guide shafts can only be used in positions with small lateral forces. When in use, you can shake your hand.
The most prominent advantage of the double-rod Pneumatic cylinder is that it can ensure high precision. Firstly, the structural design is scientific, equipped with two guide shafts, among which the piston rod and the connection are combined into a floating shaft plate. When workshop workers use it, they will find that it can withstand relatively large lateral forces, second only to sliding Pneumatic cylinder. There are two types of this double-rod Pneumatic cylinder reversing rod, namely copper ring and ball linear bearing. The ball linear bearing has higher precision, but it is relatively expensive. Copper ring bearings are cheaper, but they are relatively rougher.
Secondly, the double-rod Pneumatic cylinder has obvious advantages in installation. Due to its standard embedded installation and fixation form, the double-rod Pneumatic cylinder can save a lot of space. In addition, it also has certain bending strength and torsional strength, and can absorb part of the lateral load. The installation holes of the fixed plate have three sides and can be loaded from multiple positions.
The installation of the double-rod Pneumatic cylinder is also very simple, and no additional accessories are needed. Because it uses two guide shafts, it has a strong anti-lateral capacity. Users can choose the appropriate installation location according to their actual needs. Even in some occasions with high requirements for installation accuracy, it can be used because it is specially set with two precise positioning holes, providing higher precision positioning installation.
The third feature of the double-rod Pneumatic cylinder is its high speed. The double-rod Pneumatic cylinder reduces resistance and improves buffering performance by measures such as extending the length of the Pneumatic cylinder barrel, improving the material of the sealing ring, and enhancing processing accuracy, enabling the Pneumatic cylinder to operate at a higher speed.
Thrust calculation of double-rod cylinder
The bottom area of the Pneumatic cylinder inner diameter × system pressure = output force -----N
For example: Pneumatic cylinder diameter 40, system pressure 0.5MPA
20×20×π×0.5 = 628N
The thrust F1 on the Pneumatic cylinder piston rod =π/4×D2×P×ß (N)
The pulling force F2 on the Pneumatic cylinder piston rod =π/4× (D2-d2) ×P×ß (N)
F1: The thrust when the piston rod is pushed out
F2: The pulling force when the piston rod is pulled back
D: Inner diameter of the Pneumatic cylinder tube (piston diameter)
d: Diameter of the piston rod
P: Air source pressure
ß: Load rate (about 65% at low speed and about 30% at high speed)
The double-rod Pneumatic cylinder should have double force
First, calculate the thrust of a single cylinder, P (working pressure) x S (piston area)
The double-rod Pneumatic cylinder has twice the pushing force
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