Port grinding device for steel column machining

The utility model discloses a port polishing device for steel column machining, and relates to the technical field of steel machining. Comprising an operation table, a polishing frame and a supporting mechanism. The two sides of the operation table are connected with polishing frames through supporting mechanisms correspondingly. The supporting mechanism comprises a first-stage supporting rod, a second-stage supporting rod and an adjusting assembly. A first-stage supporting rod and a second-stage supporting rod are rotationally installed on the two sides of the grinding frame correspondingly and connected with the operation table in a crossed mode. A rail groove corresponding to the first-stage supporting rod is formed in the operation table, an adjusting assembly is embedded in the rail groove, and the end, away from the rail groove, of the operation table is rotationally connected with the second-stage supporting rod; the adjusting assembly comprises a translation structure and an angle structure. The devic