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    • 42. 发明公开
    • TURNING METHOD AND TURNING DEVICE
    • DREHVERFAHREN UND DREHORRICHTUNG
    • EP2891535A1
    • 2015-07-08
    • EP13832439.7
    • 2013-07-30
    • NTN Corporation
    • NISHIKI TakuSHIRAGA Hiroaki
    • B23B1/00B23B5/00B23B21/00B23B27/02F16C19/18F16C33/64
    • B23B1/00B23B29/24B23B2215/12B23B2270/14F16C19/18F16C33/64F16C2220/62
    • Provided are a turning method for enabling machining of double-row raceway surfaces (grooves) so as to highly precisely set a mutual PCD dimension error and a groove pitch (raceway surface pitch), and a turning device capable of such turning. The turning method and the turning device perform turning on respective raceway surfaces (2a, 3a) of an inner race (2) and an outer race (3) of a double-row bearing (1). The respective raceway surfaces of any one of the inner race (2) and the outer race (3) are subjected to simultaneous turning with a turning tool (10) including a plurality of cutting tools (11A, 11B). After that, a direction of the plurality of cutting tools (11A, 11B) of the turning tool (10) is changed, and the respective raceway surfaces (2a, 3a) of another one of the inner race (2) and the outer race (3) are subjected to simultaneous turning with the turning tool (10).
    • 提供了一种用于能够加工双列滚道表面(凹槽)以便高度精确地设定相互PCD尺寸误差和槽间距(滚道表面间距)的转动方法,以及能够进行这种转动的转动装置。 转动方法和转动装置对双列轴承(1)的内座圈(2)和外圈(3)的各个滚道面(2a,3a)进行转动。 利用包括多个切削工具(11A,11B)的转动工具(10)对内胎圈(2)和外座圈(3)中的任何一个的相应滚道表面进行同时转动。 之后,转动工具(10)的多个切削工具(11A,11B)的方向改变,另一个内圈(2)和外圈(2)的滚道面(2a,3a) (3)与转动工具(10)同时转动。