| 摘要 |
In machining a pocket ( 1 ) installing therein a rolling element, tools ( 7, 8 ) are prepared whose milling parts ( 5, 8 a) have contours which coincide with the sectional configuration of the pocket resulting when the pocket has been machined along a retainer radial direction (Z), and the milling parts ( 5, 8 a) of the tools ( 7, 8 ) are inserted into a prepared hole for the pocket which is provided in advance and are then translated in a retainer revolving direction (Y) and axial direction (X), respectively, for forming the pocket. Accordingly, it is possible to provide a retainer for rolling bearings that has high accuracy in machining pockets and which is suitable for an integral one-piece retainer.
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