Supporting device multi-angle internal and external thread structure machining device

The invention discloses a supporting device multi-angle internal and external thread structure machining device, and particularly relates to the technical field of thread machining. A first disc, a second disc, a limiting groove, a rotating groove, a rotating rod, a cam, a rotating plate, a connecting frame, a first clamping plate and a second clamping plate are arranged, and the rotating plate controls the second clamping plate to move forwards through a first moving rod; the first clamping plate and the second clamping plate get close to each other and clamp and fix the to-be-machined workpiece, and then thread machining is conducted on the to-be-machined workpiece, feeding and discharging of the to-be-machined workpiece are conducted at the position, far away from the machining position, of the foremost side, and the feeding process is automatically and intermittently conducted; clamping and positioning of the workpiece to be machined are automatically completed during intermittent feeding, thread machinin