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1. Pipelined regular design and platooning should avoid excessive arcs, random curves, compound bends, and greater than 180 degrees. The arc. Excessive arcs not only make the tooling bulky, but also are limited by the size of the bender machine tool; arbitrary curve and compound bend design are unreasonable, which greatly hampers mechanization and automatic production, making it difficult for operators to get rid of bulky physical labor. Greater than 180. The arc makes the bender unable to remove the mold.
2. Bending Radius The standardized bending radius should try to achieve "one tube and one mold" and "multiple tube and one mold". For a pipe, no matter how many bends, the bending angle can only have one bend radius, because the pipe bender does not change the module during the bending process, which is “one pipe and one moldâ€. The "multi-tube-die" method means that the same diameter pipe should use the same bending radius as much as possible, that is, using the same set of modules to bend different shapes of the pipe shape, so that it is beneficial to reduce the number of modules.
3. The proper bend radius value of the bend radius of the catheter determines the resistance of the catheter during bending. In general, a large bending radius of the pipe diameter, the phenomenon of internal wrinkling and slipping is likely to occur when bending, bending quality is difficult to guarantee, so the R value of the pipe bending die is generally 23 times the pipe diameter.
4. Moderate bending forming speed The main influence of the bending forming speed on the forming quality is: the speed is too fast, and the curvature of the bent portion of the duct is easily caused. The roundness is not satisfactory and the duct is pulled or cracked. The speed is too slow and it is easy to cause The corrugation and compression of the catheter are slipping, and the large-diameter tube tends to form a sagging of the curved portion of the catheter. For a large number of tests on these two CNC pipe bending machines, it is advisable to determine the bending speed of the pipe as 20%-40% of the maximum bending speed of the machine.
5. A suitable mandrel and its location The mandrel primarily acts as an inner wall supporting the bend radius of the catheter to prevent it from deforming during bending. At present, if the domestic pipe is bent on a machine tool without using a mandrel, its quality is difficult to guarantee. There are many types of mandrels, such as cylindrical mandrels, universal single, double, triple, and four-ball headed mandrels, directional single, multi-ball headed mandrels, and the like. In addition, the location of the mandrel also has a certain influence on the bending of the catheter: In theory, its tangent line should be flush with the tangent line of the bending die, but after a lot of tests prove that the advance 1 ~ 2mm is better, then the quality of the elbow Ideal. Of course, if the advance amount is too large, the so-called “goose head†phenomenon will occur on the outer wall of the curved part.
What are the technical characteristics of CNC pipe bending machine?
CNC pipe bending machine is mainly used for electric power construction, public railway construction, boiler laying, bridges, ships and other aspects of pipe laying and repairing, CNC pipe bending machine is simple to operate, easy to move, fast installation, occupy the leading product position in the domestic bending machine market With a wide range of applications, what are the technical features of CNC pipe bending machines?