Positioning table for machining self-aligning roller bearing ring

The utility model discloses a positioning table for machining a self-aligning roller bearing ring, which belongs to the technical field of bearing machining and comprises a mounting disc, a support column is fixedly mounted in the middle above the mounting disc, and a bearing is fixedly mounted outside the support column. According to the positioning table for machining the self-aligning roller bearing ring, by arranging a driving device, a second bevel gear, a first toothed bar, a gear, a second toothed bar and an elastic clamping structure, when bearing positioning is conducted, a driving rotating shaft is controlled to drive the second bevel gear to rotate, and when the first toothed bar and the gear are in meshing transmission, the second toothed bar is driven to rotate; when the bearing is machined, the two second toothed bars drive the two elastic clamping structures to gradually get close to the bearing and clamp and position the bearing, after the bearing is machined, the supporting table continues to