To provide a technique by which a phase of a broach can be easily matched with an uneven shape of a spline hole and the uneven shape of the spline hole can be finished with high accuracy while assuring a reasonable cutting allowance, and further, to provide a technique by which a cutting surface does not become rough and it can be prevented that a large load is added to the broach, and therefore, a service life becomes shorter.SOLUTION: A wheel bearing device 1 comprises: an outer member 2 on an inner periphery of which outside rolling surfaces 2c, 2d are formed; an inner member 3 on an outer periphery of which inside rolling surfaces 3c, 3d are formed; and plural rolling elements 41 which are interposed between respective rolling surfaces 2c, 2d, 3c, 3d of the outer member 2 and the inner member 3, and has a spline hole 3b which is formed in a through hole 3h of the inner member 3. In this wheel bearing device, a guide groove 3G, in which a guide plate 8G for a finishing broach 8 passes, is formed on an inner periphery of the spline hole 3b.SELECTED DRAWING: Figure 8
【課題】スプライン穴の凹凸形状に対して容易にブローチの位相を合わせることができ、適度な削り代を確保してスプライン穴の凹凸形状を高精度に仕上げることができる技術を提供する。また、切削面が荒くならず、かつブローチに大きな負担がかかって寿命が短くなるのを防ぐことができる技術を提供する。【解決手段】内周に外側転走面2c・2dが形成された外方部材2と、外周に内側転走面3c・3dが形成された内方部材3と、前記外方部材2と前記内方部材3の各転走面2c・2d・3c・3d間に介装される複数の転動体41と、を備え、前記内方部材3の貫通穴3hに形成されたスプライン穴3bを有する車輪用軸受装置1において、前記スプライン穴3bの内周に仕上用ブローチ8の案内板8Gが通る案内溝3Gが形成されている、とした。【選択図】図8
WHEEL BEARING DEVICE AND MANUFACTURING METHOD THEREFOR
車輪用軸受装置とその製造方法
2019-05-23
Patent
Elektronische Ressource
Japanisch
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