Abstract
Metal spinning is a plastic forming process for forming the rotational shapes. In the process, the blank attached on the rotating mandrel is pushed by roller, and formed. This process is more suitable for high-mix low-volume production than press forming. Recently, several studies on forming non-axisymmetric shapes have been published. However, the shapes are limited to non-cylindrical shapes. In this study, synchronous multi-pass metal spinning for non-axisymmetric shapes such as rectangular box shapes is developed. In this method, position of roller is controlled synchronizing with the mandrel shape. To calculate the tool path easily, it uses the measurement of the mandrel shape using impedance control, and linear interpolation between the blank shape and the mandrel shape. This paper reports the forming experiments which made some non-axisymmetric shapes from thin aluminum sheets.
