The invention discloses a
polishing device and a
polishing method for the inner wall of a
metal bent
pipe, and belongs to the field of
polishing devices. A polishing device for the inner wall of a
metal bent
pipe comprises a base, a
grinding wheel is arranged above the base, a driving
assembly for driving the
grinding wheel to operate is arranged at one end of the
grinding wheel, a clamping and fixing
assembly is arranged on one side of the
grinding wheel, and a fixing ring is fixedly installed on the surface of one side of the clamping and fixing
assembly; the
rotating disc can rotate; through mutual cooperation of the arranged assemblies, the
grinding wheel automatically stretches into the inner wall of one end of a workpiece and conducts grinding and polishing operation around the periphery of the inner wall of the workpiece, the placing position of the clamped workpiece can be adjusted in a self-adaptive mode according to the shape characteristics of the workpiece, the
machining precision of the device is improved, and the
machining efficiency is improved. And meanwhile, in the
machining process,
metal chippings raised at the clamping and fixing assembly can be automatically collected and treated, the
working environment is protected, meanwhile, the machining stability of the device is improved, and the fault phenomenon is reduced.