CNC pipe bending machine is mainly used in boiler, bridge, ship, electric power construction, railway construction and other aspects of pipeline laying, CNC pipe bending machine simple operation, easy to move, fast installation, in the domestic pipe bending machine market occupy the leading product position, widely used, then CNC pipe bending machine what are the technical characteristics?

1. Appropriate bending radius value

The bending radius of the catheter determines the resistance of the catheter during bending. Generally speaking, the pipe diameter is large and the bending radius is small, the bending is prone to internal wrinkling and slipping, and the bending quality is difficult to ensure, so the R value of the bending die is generally selected to be 23 times the diameter of the pipe.

2. Tube normalization

Excessive circular arc, arbitrary curve, compound bend and greater than 180 should be avoided when designing and arranging pipes. The arc of... The excessive arc not only makes the tooling bulky, but also is limited by the size of the bending machine. Arbitrary curve, compound bending design is very unreasonable, greatly hindering mechanization, automatic production, so that the operator is difficult to get rid of heavy physical labor; Greater than 180. The arc of the pipe bending machine can not remove the mold.

3. Suitable mandrel and its position

In the bending process, the mandrel mainly plays the role of supporting the inner wall of the bending radius of the conduit to prevent its deformation. At present, if the domestic pipe is bent and formed on the machine tool without the use of mandrel, its quality is difficult to guarantee. There are many forms of mandrel, such as column mandrel, universal single, double, three, four ball head mandrel, directional single, multi-ball head mandrel and so on. In addition, the position of the mandrel also has a certain impact on the bending of the conduit: in theory, its tangent line should be flush with the tangent line of the bending die, but after a lot of tests have proved that 1 ~ 2mm in advance is better, and the bending quality is ideal at this time. Of course, too much advance will cause the phenomenon of the so-called "goose head" on the outer wall of the curved part.

4. Moderate bending forming speed

The main influence of the bending forming speed on the forming quality is as follows: the speed is too fast, which is easy to cause the bending part of the pipe to be flat, and the roundness can not meet the requirements, resulting in the pipe pulling and breaking; If the speed is too slow, it is easy to cause the pipe wrinkling and the pressing block slipping, and the pipe with large diameter is easy to form the sag of the bending part of the pipe. According to a large number of tests on these two CNC pipe bending machines, the bending speed of the pipe is determined to be 20%- 40% of the maximum bending speed of the machine.

5. Standardization of bending radius

The bending radius should be as far as possible to achieve "one tube one mode" and "multiple tubes one mode". For a pipe, no matter how many bends and bending Angle, its bending radius can only have one, because the bending machine does not replace the module during the bending process, which is "one tube and one mold". The "multi-tube one mode", that is, the pipe of the same diameter specification should try to use the same bending radius, that is, use the same set of modules to bend different shapes of tubes, which is conducive to reducing the number of modules. Article source: http://www.cn-wgj.com