| 摘要 |
PROBLEM TO BE SOLVED: To machine a traction drive rolling body, having excellent traction performance and rolling fatigue performance, at a low cost with high efficiency by a method wherein specified burnishing machining is applied on the rolling surface of a traction drive rolling body and central line average coarseness of the rolling surface is limited. SOLUTION: Since, by applying burnishing machining on a traction drive rolling surface, surface coarseness Ra of a rolling surface is finished to 0.2μm or less, traction performance is improved without applying super finish machining. Further, since burnishing machining is applied as a finish processing method for a drive rolling body at a bearing of 7.0GPa or more, plastic deformation and the compression stress of a rolling surface are effectively generated and rolling fatigue performance is improved. Further, since surface coarseness Ra of a rolling surface after ground machining by turning is set to 0.5μm or less, the rolling surface is reasonably finished into the surface coarseness Ra of 0.2μm or less by following burnishing machining. |
