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Briefly talk about some nonfunctional characteristics of the pipe bending machine

1.Standardization of bending radius

The bending radius should be as close as possible to “one tube, one mold” and “multiple tubes, one mold”. For a tube, no matter how many bends there are and what the bending angle is, it can only have one bending radius, because the pipe bending machine does not change the module during the bending process, which is “one tube, one mold”. “Multiple tubes, one mold” means that tubes with the same diameter should accept the same bending radius as possible, that is, use the same set of modules to bend tubes of different shapes, which is conducive to selecting the number of modules.

2.Appropriate bending radius value

The size of the bending radius of the conduit determines the size of the resistance encountered by the conduit during bending. Generally speaking, the larger the diameter of the tube, the smaller the bending radius, and the more likely it is to wrinkle and slip when bending, and the bending quality is difficult to ensure. Therefore, the R value of the tube cutting die is generally 2 or 3 times the diameter of the tube.

3.Moderate bending forming rate

The bending forming rate of the pipe bending machine has an important influence on the forming quality: if the rate is too fast, it is easy to cause the flattening of the bending part of the pipe, the roundness does not meet the requirements, and the pipe is torn and broken; if the rate is too slow, it is easy to cause the wrinkling of the pipe and the slipping of the pressing block, and the pipe with a large diameter is easy to cause the sinking of the bending part of the pipe. According to many tests on these two pipe bending machines, the bending rate of the pipe is determined to be 20%-40% of the maximum bending rate of the machine.

4.Regularization of pipe shape

When planning and arranging pipes, it is necessary to avoid excessive arcs, arbitrary curves, compound bends and arcs greater than 180. An arc that is too large not only makes the tooling bulky, but also is restricted by the machine tool specifications of the pipe cutting machine; the design of arbitrary curves and compound bends is very unreasonable, which greatly hinders mechanized and automated production, making it difficult for operators to get rid of heavy manual labor; an arc greater than 180. makes it impossible for the pipe cutting machine to unload the mold.

5.Suitable mandrel and its position

The mandrel plays an important role in supporting the inner wall of the bending radius of the tube to prevent its deformation during the bending process. Of course, if the advance is too large, the outer wall of the bending part will appear the so-called “goose head”. There are many types of mandrels, such as column mandrels, universal single, double, triple, and quadruple ball head mandrels, directional single and multi-ball head mandrels, etc. In addition, the position of the mandrel also has a certain influence on the bending of the tube: theoretically, its tangent should be flush with the tangent of the bending die, but after many experiments, it has been proved that it is better to advance 1 to 2 mm, and the quality of the bending tube is relatively ideal at this time.

For small and medium batches of pipe processing and relatively simple bending tasks, we recommend the use of NC pipe bending machines. Below is the parameter of NC bender. If you are interested, welcome to consult ANTISHICNC. We also have CNC pipe bending machine which can meet various needs.

Main specifications Unit DW38NC DW50NC DW63NC DW75NC DW89NC DW130NC
Max. bending diameter x Wall thickness mm Φ38×2 Φ50×2 Φ63×2 Φ75×6 Φ89×6 Φ130×10
Max. bending radius mm R200 R250 R300 R350 R450 R520
Mini. bending radius mm R≥1.5D R≥1.5D R≥1.5D R≥1.5D R≥1.5D R≥1.5D
Max. bending Angle Degree 190 190 190 190 190 190
Standard core length mm 1600 2200 2600 2800 3500 4500
Control system Microcomputer control
Number of elbow allowed for pipe fitting Unit 16 16 16 16 16 16
Number of parts that can be stored Unit 16×16 16×16 16×16 16×16 16×16 16×16
Oil motor power KW 4 5.5 7.5 7.5 11 22
Max system pressure Mpa 12 12 12 12 14 14
Hydraulic system control Solenoid valve
Tank volume L 110 150 220 250 260 400
Machine dimensions mm 2500×750×1250 2950×800×1230 3300×1000×1300 4300×900×1300 4500×1300×1400 6400×1850×1500
Machine weight Kg 600 1220 1300 1900 2200 8000

Tags: pipe bending machine, NC bending machine, pipe bender

Our equipment has CE, ISO quality inspection certificate, so the quality is guaranteed to be cost-effective. According to different processing requirements, machines can be customized to fit for your usage, to provide customized services. In the processing period, we strictly control the production process, to ensure the quality of clearance, standardize the process, strict implementation.