| 摘要 |
Provided is a fixing sleeve making it possible to reduce the surface roughness of the inner circumferential surface of the fixing sleeve by spinning, and a method for manufacturing the fixing sleeve. The spinning is performed by moving rollers 4, in the axial direction of a cup-shaped tubular body 2 and, at the same time, a burnishing tool (spherical tool) 7 is pressed against the outer circumferential surface 22 of the cup-shaped tubular body 2 after the spinning, and the burnishing tool 7 is moved in the same direction as the rollers 4. The cup-shaped tubular body 2 is plastically deformed in the axial direction of the cup-shaped tubular body 2, reduced in wall thickness, and elongated in the axial direction. |
