The Differences Between Hydraulic Press Brakes and CNC Press Brakes


Differences Between Hydraulic Press Brakes and CNC Press Brakes

The CNC press brake machine is a normal hydraulic press brake machine with a numerical control operating system. It is an upgraded product of the ordinary press brake machine. Frequent process changes can reduce the labor intensity of the operator. However, the operating skills of the operators are higher than those of ordinary hydraulic press brakes.


Compared with the hydraulic press brake machine, the most distinctive feature of the CNC press brake machine is its CNC operating system. This is an upgrade of the ordinary press brake machine, which reduces the labor force of the operator and enhances the processing efficiency. But at the same time, the operational requirements and skills of CNC press brake machines are much higher than that of hydraulic press brake machines and relatively complicated. The CNC press brake machine has a multi-step programming function, which can realize multi-automatic operation and complete multi-step parts processing at one time.


The hydraulic press brake machine is energized by the wire to the coil, and after being energized, it generates a gravitational force on the pressure plate, thereby achieving the clamping of the thin plate between the pressure plate and the base. Due to the use of electromagnetic force clamping, the pressure plate can be made into a variety of workpiece requirements, and the workpiece with sidewalls can be processed.


How to Choose A Suitable CNC Press Brake

What the user needs to do is carefully consider the material grade and the maximum processing thickness and length. If most of the work is low carbon steel with a thickness of 16 gauge and a maximum length of 10 feet, the free bending force need not be greater than 50 tons. However, if you are engaged in a large number of bottomed die forming, perhaps a 150-ton machine tool should be considered. Assuming that the thickest material is 1/4 inch, 10 feet of free bending requires 165 tons, and bottomed die bending (correction bending) requires at least 600 tons. If most of the workpieces are 5 feet or shorter, the tonnage is almost halved, which greatly reduces the purchase cost. The length of the parts is very important to determine the specifications of the new machine.


Of course, the choice of bending machine is mainly based on the user’s own situation, which is certain and is also a direct factor to reduce production costs. The bending machine can also be used to press the working edge, first bend the workpiece to 30 degrees, and then press the workpiece with a flat knife, but generally, the pressing edge that can be completed with an ordinary punch is not arranged to the bending machine as much as possible, because the press The effect of the dead side is relatively better. When arranging the process, it is often necessary to consider whether it is good to bend and whether it can be bent, because bending is a very important process, and the good operation of bending directly affects the guarantee of the quality of the bend, and often appears The quality problems are due to the fact that the bending size is not well controlled, so special attention should be paid to the bending problem during the design process, which is related to the stability of the quality of the product during mass production.


In the actual bending process, various problems will be encountered. Many times, the influence of bending on other processes will also be considered. Many times, specific problems will be analyzed, and the process will be properly arranged. At the same time, under some special needs, the supplier will also manufacture special bending knives, but if the shape of the tool is stranger or the curvature is larger, it will inevitably affect the rigidity of the tool and shorten the tool life. At present, the development of CNC bending machines is also facing many tests. The application of CNC systems, CAD and CAPP, and flexibility are developing rapidly. However, China’s CNC bending machine industry wants to continue to develop and grow, there is still a long way to go.