Clamp for shaft workpiece grinding machine

The utility model relates to a clamp for a shaft workpiece grinding machine. According to the technical scheme, the clamp for the shaft workpiece grinding machine comprises two tips with the distancebetween the tips adjustable, a threaded clamp is arranged close to one of the tips and provided with a fixing hole extending left and right, and the inner surface of the fixing hole is provided with internal threads capable of being in threaded fit with the outer surface of a workpiece. The threaded clamp can be fixedly connected with a deflector rod, the two tips are oppositely arranged in the left-right direction, the two tips are coaxial with the fixing hole, the threaded clamp is located between the two tips, and the deflector rod is located on the circumferential outer side of the threaded clamp and can do circumferential motion around the axes of the two tips. The device has the advantages that threads on the surface of a shaft workpiece are not damaged, and the product percent of pass is improved; the threa