Discussion On The Function And Operation Instructions Of The Mandrel Of The Bending Machine

During the bending process, the core rod mainly plays the role of supporting the inner wall of the pipe bending radius to prevent its deformation. At present, it is difficult to guarantee the quality of domestic pipe bending on machine tool without mandrel. There are many types of mandrels, such as cylindrical mandrels, universal single, double, three and four ball head mandrels, directional single and multiple ball head mandrels, etc.
When the core rod of the small pipe bending machine is far away from the tangent point and is in the rear position, it will not be able to fully stretch the data on the outside of the bend, so the position of the core rod will cause a large rebound, which may make the complete angle smaller and may also increase the radius. If the radius becomes larger, it can advance towards the tangent point. Adjust the setting of the mandrel. If the pipe keeps breaking, it will be clarified that the data is too hard, and the data that is too hard can not be fully stretched. The problem can be solved by using the completely annealed pipe.
The so-called springback control refers to the possibility of changing back to the original size after the bend is processed and formed. The springback will reduce or increase the bending degree according to the bending radius of the bend. Generally, the smaller the bending degree, the smaller the springback will be. The position of the springback compression die and the influence of pressure have different radii.
The pipe of small pipe bender will be twisted or folded. The reason for this may be that the data is too hard, so the inner diameter cannot be shrunk during bending. This phenomenon can be handled by inserting a mandrel.