An analysis of tube nosing through rotary tool

The paper investigates the deformation mechanics of the tube during the rotational tube nosing process. Tube nosing is similar to the tube flaring process; however, its end is reduced rather than expanding. During the process, if the tube end is reduced, it is called a conventional tube nosing process. Along with the conventional, rotational tube nosing was also studied. The tool rotations were set to help reduce the tube end. Two conditions of tube softening were studied, i.e., not softening the tube while heat is generated due to friction and softening due to heat generation. In this research, numerical work was performed and analysed. The outcome revealed that drastic changes could be seen between the two tool rotation groups. This effect was due to the temperature generation with the tool rotation. The strains observed were compression with no sign of wrinkling. The nose region’s compression thickens the tube and is more dominant at higher tool rotation with a softening effect. The highest tube reduction with lower force requirement was observed at higher tool rotation as compared to the conventional process.