Research on the roller feed track during spinning of hollow part with triangle cross-section

The roller feed track during spinning of hollow part with straight edge triangle cross-section was researched. The variation characteristic of the contact point between the roller and workpiece was obtained: the contact point moves not only along the axial direction caused by the roller axial feed, but also along the radial, circumferential and axial directions caused by the non-circular cross-section profile of workpiece. Based on the variation characteristic of the contact point, a graphical analytic method for the calculation of roller radial feed movement was put forward. The software MSC.ADAMS was adopted to verify the calculation results, the tolerance range is [-0.09mm, +0.09mm], it indicates that the calculation method is reasonable and can be used to calculate the roller feed track during spinning of hollow parts with various non-circular cross-section.