Technological device for turning slender shaft and machining method of slender shaft

The invention relates to a process device for turning a slender shaft and a machining method of the slender shaft, and belongs to the field of machine manufacturing. The process device comprises a supporting assembly (1), a seat body (2), a dial indicator (3), a threaded bushing (4) and a dial indicator locking handle (5). According to the method, a traditional machining mode is changed, namely three-point type supports such as a follow rest and a center frame are adopted, and sliding friction is generated between the supports and the shaft. By means of the machining principle of a horizontal lathe, the process device for turning the slender shaft and the machining method of the process device are designed, sliding friction is improved into rolling friction, the process device supports and rolls the slender shaft at the same time, and efficient and high-precision turning of the slender shaft is achieved. 本发明涉及一种车削细长轴的工艺装置及其加工方法，属于机械制造领域。本发明的工艺装置包括：支撑总成(1)、座体(2)、千分表(3)、螺纹衬套(4)、千分表锁紧手柄(5)。本发明的方法改变了传统加工方式，即跟刀架、中