Single back taper machining clamp

The utility model relates to the technical field of machining, in particular to a single back taper machining clamp. Comprising an operation table, a first clamping block, a second clamping block and a fixing assembly, the fixing assembly comprises a sliding block, two springs, a trapezoidal block, a threaded sleeve, a threaded rod and a driving unit, the two ends of the springs are fixedly connected with the first clamping block and the operation table respectively, the sliding block is fixedly connected with the second clamping block and further slidably connected with the operation table, and the threaded rod is fixedly connected with the driving unit; the threaded sleeve is in threaded fit with the threaded rod, the trapezoidal block is fixedly connected with the threaded sleeve, the threaded rod is driven by the driving unit to rotate, so that the threaded sleeve moves downwards on the threaded rod, the bevel edge of the trapezoidal block pushes the second clamping block, the second clamping block pushes