The operating principle of the hydraulic cutting machine is: When the punching head passes through the die to act on the workpiece, the pressure in the working cylinder does not reach the rated pressure, and the pressure will increase as the time of contact (cutting into the workpiece) increases. Until the electromagnetic reversing valve receives the signal, the reversing valve is reversed, and the punching head begins to reset; at this time, the pressure in the cylinder may not reach the set rated pressure value due to the time limit of the pressure oil entering the cylinder; That is to say, the system pressure has not reached the design value, and the die cutting has been completed.
