The invention discloses a
pipe fitting positioning device. The
pipe fitting positioning device comprises a supporting rod, a positioning
assembly and a driving part; the positioning
assembly is arranged on the supporting rod in a sleeving mode, the positioning
assembly can stretch into the
pipe fitting, the positioning assembly comprises a fixed part and at least two movable parts arranged in the circumferential direction of the fixed part, the fixed part is provided with a sliding way in the radial direction of the supporting rod, and the movable parts are in sliding fit with the sliding way; and the driving part is arranged on the supporting rod in a sleeving mode and connected with the fixed part, a driving part is arranged at the side, facing the movable parts, of the driving part, and when the driving part rotates around the supporting rod, the driving part drives the movable parts to move along the sliding way so that the movable part can have a first state of tightly supporting the
pipe fitting from the interior of the
pipe fitting and a second state of being separated from the inner wall of the
pipe fitting. According to the pipe fitting positioning device, the pipe fitting can be tensioned and supported from the interior of the pipe fitting, and the machined area of a pipe workpiece can be effectively increased; and the positioning device can be used for operating the pipe workpiece with a wide pipe
diameter range, and has high operation flexibility and adaptability.