Circumference-symmetrical automatic pressure straightening machine for slender shaft

The invention relates to the field of machining, in particular to a circumference-symmetrical automatic pressure straightening machine for a slender shaft. The circumference-symmetrical automatic pressure straightening machine for the slender shaft comprises a positioning plate, a straightening and bearing device and a bearing drive device, wherein the bearing drive device is in transmission connection with the straightening and bearing device; a positioning and pressure-supplying device and a positioning and taking device are arranged on the positioning plate; a loading support table in buttjoint with the straightening and bearing device is arranged in front of the positioning plate; a blanking support table is arranged under the positioning and taking device; a through slot is formed inthe positioning plate; a controller is arranged beside the positioning plate; a contact displacement sensor is arranged on the straightening and bearing device; and under a work state, a sensing endof the contact displacement