Working principle of cylinder

2016-06-07

Determine the thrust and pull on the piston rod according to the size of the work force. Thus, when selecting the cylinder, the output force of the cylinder should be slightly margin. If bore choose to small, output power is not enough, cylinder not working properly; but bore too large, not only the heavy equipment, high cost, and gas consumption increases, resulting in a waste of energy. In fixture design, should adopt the reinforcement mechanism as far as possible, to reduce the size of the cylinder.


 Cylinder
The following is the calculation formula of the cylinder theory output:


 F: cylinder theory output force (KGF)
F ': the efficiency of output force of 85% when the (KGF) - (F' =F * 85%)
The cylinder (mm): D
P: working pressure (kgf/C m)
Example: 340mm diameter of the cylinder, working pressure of 3kgf/cm2, the theoretical output of how much?
P, D F, F 'connection, find the point on it:
F=2800kgf; F '=2300kgf
Select the cylinder bore in the engineering design, according to the size of the pressure and the theory push or pull, from experience to the Table 1-1 found.
With a cylinder pressure 5kgf/cm2, out of the cylinder in the thrust for 132kgf. (cylinder efficiency is 85%) ask: select the cylinder bore.
85% - by the efficiency of the thrust force of the cylinder 132kgf and the cylinder, can be calculated from the theory of thrust cylinder for F=F '/85%=155 (KGF)
By using 5kgf/cm2 theory - thrust pressure and cylinder bore, found 63 cylinder selection? Can be used to meet the requirements.

 

Cylinder manufacturer:Ningbo Lida Pneumatic Complete Sets Co.,Ltd.