Aluminum alloy elongation measuring device

The utility model provides an aluminum alloy elongation measuring device, which relates to the technical field of elongation measurement and comprises a working table, a first supporting table is slidably mounted on one side of the upper surface of the working table, a second supporting table is slidably mounted on the other side of the upper surface of the working table, and a limiting assembly is arranged between the first supporting table and the second supporting table. According to the aluminum plate machining device, by sliding the positioning plate, the positioning plate is attached to the surface of the middle of an aluminum plate, at the moment, by rotating the threaded sleeve, the threaded sleeve moves in the middle of the stud, and the aluminum plate can be fixed through the threaded sleeve; when the aluminum plate is fractured, the threaded sleeve is pressed on the positioning plate, the positioning plate can be pressed on the surface of the aluminum plate at the moment, the middle of the aluminum