Swing rolling, namely swing rolling, also known as axial rolling, is a new plastic processing technology gradually and widely used in production since the 1970s. Because of the unique processing method and many advantages of this process, scholars and enterprises all over the world attach great importance to it. The process features are as follows:
(1) The rotary rolling die has two parts. The active pressurizing part is the cone die (also known as the swing head), which is in local contact with the workpiece during processing and makes rolling or rolling + sliding on the workpiece. The other part of the die is coaxial with the machine tool, and the workpiece is installed on this part of the die.
(2) During rotary rolling, the conical die installed on the swing head is in local contact with the workpiece (as shown in the figure), which is only 1 / N of the deformation area of the workpiece (n = 5-10). The contact area is axially compressed and extends tangentially and radially. The contact surface moves continuously due to the swing of the die. When covering the whole deformation area of the workpiece, one feed cycle is completed, and multiple feed cycles are superimposed to complete the overall deformation required by the workpiece. It is equivalent to the cone rolling + sliding on the workpiece along the bus, and the contact surface is biased to one side, that is, the machine tool bears periodic deformation eccentric load.
(3) Compared with the traditional plastic machining method, the motion forms of rotary forging are diverse and complex.
(4) Rotary forging process is mainly suitable for forming axisymmetric parts.