Rotary longitudinal lathe clamping tool

The utility model discloses a rotary type longitudinal lathe clamping tool which comprises a machining plate, a driving assembly is detachably installed on one side of the top of the machining plate, a sliding groove is formed in one side of the top of the machining plate, a sliding block is connected into the sliding groove in a sliding mode, an installation plate is fixedly installed on the top of the sliding groove, and a rotating device is movably installed in the middle of the installation plate. And a placing plate is fixedly mounted on one side of the rotating device. According to the scheme, according to the rotary longitudinal lathe clamping tool, through the arrangement of the driving assembly and the rotating device, an operator puts one side of a cuboid workpiece into the containing plate, then a rotating motor can be started, the rotating motor drives a screw to rotate, and therefore a sleeving block does linear motion on the surface of the screw; and the pushing plate is driven to move towards o