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Abstract： The embodiment of the invention discloses a chamfering device of a thin wall cylinder part. The chamfering device comprises a cutter, a cutter fixing base, a workpiece positioning body and a spindle,the cutter is fixedly mounted on the cutter fixing base, and the cutter fixing base is mounted on the spindle; the cutter is driven by the cutter fixing base to rotate around the axis of the spindle,the workpiece positioning part is arranged on the spindle in a sliding and sleeving mode, the outer wall of the workpiece positioning part is tightly attached to the inner wall of the thin wall cylinder part, and the workpiece positioning part and the thin wall cylinder part together slide relative to the spindle and move close to the rotating cutter to conduct chamfering. The chamfering device ofthe thin wall cylinder part is simple and reliable in structure, workpieces easily enter the device and break away from the device, a special chamfering cutter is not needed to be used for the cutter, the chamfering quality is good, the efficiency is high, the cost is low, the workpieces after chamfering are not deformed easily, the circular degree can be guaranteed, and the chamfering device isparticularly suitable for chamfering of easily-deformed thin wall cylinder parts.
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