how to bend the chair pipe using pipe bening machine?

To bend the chair pipe using a pipe bending machine, you can follow these steps:

Prepare the work

Select the appropriate pipe bending machine: Choose a pipe bending machine that suits the material, diameter, and wall thickness of the chair pipe. Ensure that the machine has the required bending capacity and accuracy.

Check the machine: Before use, check whether the pipe bending machine is in good condition, including the integrity of the mold, the flexibility of the moving parts, and the normality of the hydraulic system or other power - driven systems (if any).

Prepare the pipes: Ensure that the surface of the chair pipe is smooth and clean, without any defects, rust, or debris, to avoid affecting the bending quality. Measure and mark the part of the pipe that needs to be bent according to the design requirements, determining the bending position and angle.

Install the mold

According to the diameter and bending radius requirements of the chair pipe, select the appropriate bending mold and install it on the pipe bending machine. Ensure that the mold is firmly installed and aligned with the machine's moving parts.

Set the bending parameters

If it is a manual pipe bending machine, you need to determine the direction and angle of bending according to the scale on the machine. For some advanced 数控弯管机 (CNC pipe bending machines), you need to input the required bending angle, radius, and other parameters into the control system.

Fix the pipe

Place the pipe in the mold of the pipe bending machine, aligning the marked bending position with the corresponding position of the mold. Then, use the fixing device of the pipe bending machine, such as a clamp or latch, to firmly fix the pipe to prevent it from moving or rotating during the bending process.

Perform the bending operation

For a manual pipe bending machine, slowly operate the handle or driving mechanism to make the pipe bend gradually. During the bending process, maintain a uniform force and speed to ensure a smooth bending arc without wrinkles or depressions. If it is a hydraulic or electric pipe bending machine, start the power - driven system and let the machine bend the pipe according to the set parameters. When the bending angle approaches the required value, pay close attention to the scale or display of the machine to avoid over - bending.

Check and adjust

After the bending is completed, release the fixing device and remove the pipe from the pipe bending machine. Use an angle ruler or other measuring tools to check whether the actual bending angle and shape of the pipe meet the design requirements. If there is a slight deviation, you can make appropriate adjustments according to the situation. If the pipe is slightly flattened, you can gently tap it with a rubber mallet to restore the circular cross - section.

Handle (Springback)

Since all materials will have a certain degree of springback after bending, it is necessary to reserve a certain springback compensation when bending. Usually, the springback angle is 1° - 3°, but the specific value should be determined according to the material and wall thickness of the pipe. You can pre - bend the pipe by a slightly larger angle than the required angle to offset the springback.

In the process of using the pipe bending machine, always pay attention to safety, wear appropriate protective equipment, such as gloves and safety goggles, to prevent accidental injuries.