The utility model relates to the technical field of
metal ring
machining, in particular to a
metal ring workpiece
machining positioning tool which comprises a
machining machine tool. The
grinding device further comprises a clamping frame and a V-shaped clamping block, a three-jaw chuck is rotationally connected to the upper side of the front end of the machining tool, a rotating rod is arranged at the front end of the three-jaw chuck, and a
grinding rod is fixedly connected to the front end of the outer side of the rotating rod. Through the use of the clamping frame and the V-shaped clamping block, the bidirectional
threaded rod is rotated to drive the clamping plate and the V-shaped clamping block to do
relative motion and move by the same distance, ring gauges of different specifications are clamped and fixed, the applicability is improved, the V-shaped clamping block is stable and uniform in clamping, convenient to
mount, dismount and replace and high in flexibility, and the clamping efficiency is improved. The
processing machine tool drives the rotating rod and the
grinding rod to rotate, the clamping frame drives the ring gauge to move front and back, reciprocating grinding is achieved, grinding is uniform and stable, grinding precision and grinding efficiency are improved, the
automation degree is high, meanwhile, the spray head moves along with the clamping frame to spray grinding paste to the surface of the grinding rod, cooling is effectively achieved, and friction is reduced.