How to calculate the cylinder force
Bottom area of cylinder inner diameter × System pressure = output force ----- n
for example: bore 40, system pressure 0.5MPa
20 × twenty ×π× 0.5 = 628n
thrust F1 on cylinder piston rod= π/ four × D2 × P ×&# 223; N)
tension on cylinder piston rod F2= π/ four × D2-d2 × P ×&# 223; N)
F1: push force when piston rod is pushed out
F2: pull force when piston rod is pulled back
D: inner diameter of cylinder pipe (piston diameter)
D: diameter of piston rod
P: air source pressure
& Load rate (at slow speed)= About 65% fast time= For example,
air pressure 0.5MPa (5.0985811kg force / square centimeter (kgf / cm))
cylinder diameter 50mm (5cm)
cylinder cross section = 3.14x (5 / 2) ^ 2 = 19.63 (square centimeter)
therefore, The theoretical output under 0.5MPa = 5.0985811 * 19.63 = 100.085 (KGF) can also be directly referred to the following cylinder output table
but it is only the theoretical output. Actually, it will be very fast to look up the table according to the working conditions
Calculation formula of theoretical output force of cylinder: F = P * d-f ′
F: theoretical output force of cylinder (KGF)
F ′: output force at 85% efficiency (KGF) - (f ′ = f) × 85%)
D: cylinder diameter (mm)
P: working pressure (kgf / cm2)
first of all, your idea of mini punch is feasible
secondly, the power of the cylinder is compressed air. For household use, you need to buy an air pump with an air tank. I'm not sure what you mean by "point" or "air pump"
there is a piston in the middle of the cylinder, and the maximum force that the cylinder can achieve is equal to the proct of
piston area and the maximum allowable compressed air pressure (pressure).
The calculation formula of cylinder pressure is: F = P * a-f. F: Cylinder output (KGF) a: sectional area (cm2) P: applied pressure (kgf / cm2) f: frictional resistance (KGF). Calculate the pressure and multiply it by the force area. The pressure is the pressure of the air source, and the stressed area is the area of the piston
the calculation formula of supercharging cylinder output = supercharging ratio * air source pressure * cylinder piston area = cylinder piston area / supercharging rod area * air source pressure * cylinder piston area. The calculation formula can get the supercharging ratio from cylinder piston area / supercharging rod area
in the actual calculation, the cylinder piston area and supercharging rod area of the gas-liquid supercharging cylinder will not be shown in the parameter table, and the details have to be known by consulting the manufacturer
In general, the cylinder force is required according to the theoretical balance condition of external load, and different load rates are selected according to different speeds, so that the cylinder output force has a little margin The cylinder diameter is too small, the output force is not enough, but the cylinder diameter is too large, which makes the equipment bulky, increases the cost, increases the gas consumption and wastes energy. In fixture design, force expanding mechanism should be used as far as possible to rece the overall size of the cylinder When the horizontal cylinder pushes the load, the exhaust throttle is recommended; When the cylinder installed vertically lifts the load, it is recommended to use the intake throttle to adjust the speedF
: theoretical output force of cylinder (KGF)
F & # 39;: Output force at 85% efficiency (KGF) -- (F & # 39; =) F × 85%)
D: cylinder diameter (mm)
P: working pressure (kgf / cm2)
the international unit of cylinder diameter is mm, the unit of piston area is QMM, that is mm
(R / 20) * (R / 20) * 3.14 * 5
for example, 0.6MPa (= 600kpa = 6.1182973 kgf / cm & # 178;))
the theoretical output can be obtained by calculating the cylinder block (inner) area * pressure value;, This is more intuitive)
for reference