Numerical control lathe machining clamp

The utility model relates to the technical field of lathe fixtures, and discloses a numerical control lathe machining fixture which comprises a workbench, a first groove is formed in the middle of the top end of the workbench, first sliding grooves are formed in the front side and the rear side of the interior of the first groove, and a servo motor is fixedly connected to the middle of the left side of the workbench. The output end of the servo motor penetrates through the workbench and is fixedly connected with a threaded rod, the right end of the threaded rod is rotationally connected to the right end of the inner side of the first groove, and the left end of the threaded rod is in threaded connection with a movable block. According to the clamping device, firstly, a threaded rod is driven by a servo motor to rotate, a convex plate and a fixed plate on the threaded rod move towards a first hollow plate, time and labor are saved, operation is easy, the working efficiency of workers is improved, a third slidi