Positioning device for production of self-aligning roller bearing

The utility model discloses a positioning device for producing a self-aligning roller bearing, and relates to the field of bearing production, the positioning device comprises a workbench, a clamping assembly is arranged on the workbench, the clamping assembly comprises two sliding grooves formed in the workbench, the sliding grooves are cross-shaped, rotating shafts are rotatably connected in the sliding grooves, two sections of screw rods are fixedly connected to the rotating shafts, and the two sections of screw rods are fixedly connected to the workbench. One ends of the two rotating shafts penetrate through the workbench to be fixedly connected with the handle, the lead screws are connected with sliding blocks in a meshed mode, the opposite sliding blocks are fixedly connected with an outer clamping block and an inner clamping block which are symmetrically placed respectively, the clamping assembly is arranged, the inner ring and the outer ring of the bearing can be fixed, and clamping is more stable thr