Pressing force calculation and reasons for hydraulic punch machine without pressure
Pressure calculation method of hydraulic press
Hydraulic punch machine,do you knowhow to calculate the diameter of the ejector cylinder of it ? Need to use 10 tons of ejection force.
The ejection pressure of the single-arm hydraulic punch machine of the oil cylinder (Kg) = the area of the oil cylinder (square centimeter) × the pressure of the single-arm hydraulic press per unit area (Kg/square centimeter) Set:
The pressure of the single-arm hydraulic punch machine is 10T=10000Kg, the pressure of the single-arm hydraulic press is 160Kg/cm2
Cylinder area=10000/160=62.5(square centimeter) Cylinder diameter=9cm=90mm
The more commonly used calculation formulas for hydraulic punch machine’s pumps in hydraulic calculations
If it is a plunger cylinder, the single-arm hydraulic pressure of a cylinder is the cross-sectional area of the plunger multiplied by the pressure of the hydraulic punch machine’s system; for the piston cylinder, it is the inner diameter of the hydraulic cylinder multiplied by the pressure of the hydraulic punch machine’s system. The unit of diameter is cm, and the unit of pressure is kilogram-force per square centimeters, the calculated result is kilograms, divided by one thousand tons is the ton, it can be calculated by knowing the cross-sectional area of the cylinder and the system pressure. Total output = cross-sectional area * pressure oil pressure (kg/cm2) X cylinder area (3.14XR2) = single-arm hydraulic pressure
Single-arm hydraulic punch machine’s pressure cannot create zero current resistance. They can create the following conditions:
load single arm hydraulic punch machine’s pressure
Single arm hydraulic pressure (bar) = weight (kg): area (cm2)
Single arm hydraulic pressure generated by spring loaded valve
Single-arm hydraulic pressure generated by flow restriction
Single-arm hydraulic pressure generated by a head of fluid
Single-arm hydraulic press pressure = weight: area
Weight=volume×density
Volume=Height×Area
Single-arm hydraulic punch press machine pressure = height × density
What is the reason for the weakness of the hydraulic punch machine
A hydraulic machine is a machine that uses liquid as a working medium and is made according to Pascal’s principle to transfer energy to realize various processes. The hydraulic press is generally composed of the machine (host), power system, and hydraulic control system.
The reasons for the weakness of the hydraulic punch machine are as follows:
1) The oil level of the hydraulic oil tank is too low
2) Hydraulic oil is not used according to the season
3) The oil inlet pipe is seriously blocked by dirt;
4) The oil seal of the driving gear of the oil pump is damaged and air enters the hydraulic punch machine’s system;
5) The oil pump inlet and outlet oil port joints or elbow joint “O” seals are damaged, the elbow joint fastening bolts or inlet and outlet pipe nuts are not tightened, and air enters the hydraulic punch machine’s system;
6) Internal leakage of oil pump and aging of sealing ring;:
7) The end face of the oil pump or the end face of the main and driven gear shaft sleeves are worn or scratched, and the unevenness of the end faces of the two shaft sleeves is out of tolerance;:
8) Internal leakage caused by incorrect assembly of internal parts of the oil pump;
9) “Left-handed” installation of “right-handed” oil pump, causing damage to the skeleton oil seal;
10) The hydraulic punch machine’s oil is too dirty.
You can check out the hydraulic punch machine to determine where the problem is, and then replace or clean it.
