Choosing the right CNC metal press brake machine from China


In my country’s automobile, aircraft manufacturing, light industry, shipbuilding, containers, elevators, railway vehicles and other industries, there is a CNC machine tool that is widely used. Unlike ordinary machine tools, it is often larger in size and has a strong bite force. , I believe netizens have guessed its name, it is a sheet metal CNC press brake bending machine. 

When most users choose a CNC bending machine, they mainly consider the material grade, as well as the maximum processing length and thickness, which is relatively easy to understand. Of course, this refers to the situation of the user’s own processing of items, which can make precise selections. Only in this way can the output of the cost be reduced. It should be known that whether the selection of the bending machine is appropriate or not can be directly related to the issue of cost.

right cnc bending machine

Generally speaking, it is to see what type of parts the user wants to produce, and to select on the basis of confirming the conditions of their own large bending machine, and it is not necessary to select those tons that are not required.

In addition, in order to select a low tonnage standard, it is possible to select a thickness greater than that of the parts made by itself. In this case, it can be ensured that the machine does not perform load work under certain circumstances, and the service life of the bending machine can be ensured. Of course, if the tonnage is too large, it will affect the degree of production of the part, and if it is slightly larger, it will not affect this.

metal press brake

What the user needs to do is to 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, then the free bending force does not need to 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 parts are 5 feet or shorter, the tonnage is almost halved, which greatly reduces the cost of purchase. The length of the part is very important to determine the specifications of the new machine.


Of course, the selection of the bending machine is mainly based on the user’s own situation, which is inevitable and a direct factor in reducing production costs.


The bending machine can also be used to press the dead edge of the workpiece, first bend the workpiece to 30 degrees, and then use a flat knife to press the workpiece to death, but generally the dead edge completed by the general punch is not organized into the bending machine as much as possible. The role of the dead edge is relatively better.


When arranging the process, it is often necessary to consider whether it is easy to bend and whether it can be bent. Because bending is a very important process, whether the bending is good or not directly affects the guarantee of bending quality, and many times it appears. The quality problems of the product are all caused by 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. In many cases, the influence of bending on other processes must be considered. In many cases, specific problems must be analyzed in detail and the appropriate organization process. At the same time, in the case of some special needs, the supplier will also make special bending knives, but if the shape of the knife is more strange or the curvature is larger, it will inevitably affect the rigidity of the tool and shorten the life of the tool.


At present, the development of sheet metal CNC press brake bending machine is also facing many challenges. The application of CNC system, CAD and CAPP and flexibility are developing rapidly. However, my country’s sheet metal CNC press brake bending machine industry wants to continue to develop and grow. there’s still a long way to go.