| 摘要 |
PURPOSE:To improve friction characteristic and dimensional accuracy by bonding resin sheets made of PTFE(polytetrafluoroethylene resin) as a main component to the bore face of an outer pipe and forming dynamic pressure generating recesses in the inner surfaces of the sheets. CONSTITUTION:A bearing 20 with dynamic pressure slots consists of resin sheets 22, made of PTFE as the main component and wear resisting material mixed therein, bonded to the bore surface of an outer metal pipe 21 in axial direction with an interval, and dynamic pressure generating recesses 60, 70 of arrowhead shapes formed in the inner surfaces of the sheets 22. In manufacturing thereof, first, dynamic pressure generating recesses 60, 70 are formed in one surface of the sheet 22 by plastic working. Next, the sheet 22 is inserted into the outer pipe 21 so as to face the other surface of the sheet 22 to the inner surface of the outer pipe 21 via adhesive agent, a rod is inserted inside the inner surface of the sheet 22, and the rod is taken out from the inside of inner surface of the sheet 22 after hardening of the adhesive agent. A rubber adhesive agent dissolved with a solvent or a thermohardening adhesive agent and the like is used as the adhesive agent. |
