| 摘要 |
PURPOSE:To enhance dynamic pressure generating groove forming accuracy by coating a base material of a dynamic pressure bearing made of ceramics with resin or oil capable of absorbing a YAGQ switch pulse laser beam, radiating the YAGQ laser beam so as to form a recess portion formed into a predetermined shape, and removing the residual coating film. CONSTITUTION:A coating film 14 made of resin or oil, e.g. dimethyl silicone oil colored into blue capable of efficiently absorbing a YAGQ switch pulse laser beam is formed on a base material 10 of a dynamic pressure bearing made of ceramics. The YAGQ switch pulse laser beam is radiated onto the base material 10 made of ceramics along a trace 11 so that a recess portion 15 such as dynamic pressure generating groove or the like of a slide bearing is formed on the base material 10. After forming the recess portion 15, the residual coating film 14 is removed. |
