The invention relates to the technical field of
polishing devices, in particular to a
polishing device for
flute processing, which comprises an external control part, a mounting part is arranged outside the external control part, an internal
polishing part is arranged in the mounting part, a
flute fixing part is arranged in the mounting part, and an external polishing part is arranged in the mounting part; when the outer
grinding frame moves to the position of the bamboo ring, the
punching and
grinding frame can stretch out by rotating the rear control frame, the surface of the bamboo ring is pointedly ground, meanwhile, the bamboo ring is prevented from mechanically blocking the movement of the
moving frame and the outer
grinding frame, it is ensured that the grinding
assembly smoothly moves along the outer wall of the
flute, and unified grinding of the flute body and the bamboo ring is achieved; the polishing continuity and uniformity of the outer wall of the bamboo flute are guaranteed, and the problems that in the intelligent manufacturing equipment industry, when the polishing
assembly moves along the outer wall of the flute to conduct polishing operation, the bamboo ring can mechanically block the polishing
assembly, the polishing assembly cannot move smoothly, and then the polishing continuity and uniformity of the outer wall of the flute are affected are effectively solved.