Flange ring machining clamp

The utility model relates to the technical field of machining equipment, in particular to a flange ring machining clamp which comprises a sliding rail and adjusting mechanisms, each adjusting mechanism comprises a clamping assembly, a clamping plate, a connecting block and a bolt, the clamping assemblies are arranged in the sliding rail, the connecting blocks are fixedly connected with the clamping plates and located at the lower ends of the clamping plates, and the bolts are arranged on the clamping assemblies. The clamping plate is arranged above the clamping assembly, the connecting block is embedded in the clamping assembly, anti-skid teeth are arranged on the inner side of the clamping plate, the number of the bolts is multiple, and each bolt penetrates through one side of the clamping assembly and the connecting block and is in threaded connection with the other side of the clamping assembly. According to the arrangement of the structure, the connecting blocks and the clamping plates can be replaced by