| 摘要 |
PURPOSE:To facilitate machining and assembly of a multirobe inner peripheral surface and to prevent the occurrence of whirl (whirling unstable phenomenon) by a method wherein at least two lines of notch by means of an outer peripheral surface is symmetrically divided along an axial direction are formed in the outer peripheral surface of a bearing member, and a sleeve is shrinkage-fitted in the outer periphery thereof. CONSTITUTION:The outer peripheral surface of a bearing member 1 is symmetrically divided by means of four lines of notch 2, and is inserted in a sleeve 4 for shrinkage-fitting, and the inner periphery of the bearing forms four arcuate surfaces through compression deformation of protrusions 3. This constitution facilitates machining and assembly and enables prevention of the occurrence of whirl. |
