What are the types of fully automatic cutting machines
The cutting machine with general mechanical transmission has a fast speed, stable operation (after adjustment, the lower limit of stroke will not change), and a large punching force; Its disadvantage is that it is noisy. So since the 1960s, it has gradually been replaced by hydraulic cutting machines.
Hydraulic transmission cutting machine
The main basis for determining the function of a hydraulic cutting machine is the magnitude of the punching force and the punching speed. Machines with high punching force but low punching speed or high punching speed but low punching force cannot successfully complete the punching task. For mechanical transmission cutting machines, the cutting speed is generally high, about 250 times/minute; Its punching speed is a variable value, with an average punching speed of 200 millimeters per second. The punching speed of hydraulic cutting machines is generally greater than 75 millimeters per second.
The differences between mechanical transmission cutting machines and hydraulic transmission cutting machines are mainly determined by the different characteristics of the two types of transmission: mechanical transmission is a rigid transmission, while hydraulic transmission does have a certain degree of flexibility.
The characteristic of hydraulic cutting machine is that when the punching head acts on the processed object through the cutting die, the pressure inside the action cylinder does not reach the rated pressure. The pressure will increase with the increase of contact time (cutting into the working object), until the electromagnetic directional valve receives a signal, the directional valve changes direction, and the punching head begins to reset; At this point, the pressure inside the cylinder may not have reached the set rated pressure value due to the limitation of the pressure oil time entering the cylinder; That is to say, before the system pressure reaches the design value, the punching has already been completed.