POLISHING DEVICE FOR CYLINDRICAL MEMBERS, CYLINDRICAL MEMBERS, AND POLISHING METHOD FOR CYLINDRICAL MEMBERS

摘要

Provided are a polishing device and a polishing method for the polishing device, whereby workpieces comprising a hard and brittle material are machined into a cylindrical shape with a prescribed diameter, microcracks present on the surface layer of the workpieces are removed, and surface roughness is refined by removing surface irregularities. The polishing device is provided with: a clamping means that is connected to a workpiece rotation means, and that clamps both ends of the workpiece; a polishing means, the tip of which comes into contact with the outer surface of the workpiece and rotates, thereby polishing the outer surface of the workpiece; a moving means that moves the workpiece relative to the polishing means in a cylindrical-shaped axial direction of the workpiece; a height position detection means that detects the height position of a polished finished product and a workpiece to be polished; and a control means that carries out polishing by calculating the height positions and machining conditions that have been inputted. The polishing means is provided with at least one grindstone, and a polishing brush provided with a bristle material or an elastic body containing abrasive grains. The grindstone and polishing brush are positioned so as to be provided continuously along the axis of a cylindrical workpiece.