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    • 1. 发明授权
    • Method of making an abrasive disc
    • 制造研磨盘的方法
    • US4439907A
    • 1984-04-03
    • US363248
    • 1982-03-29
    • Aleck BlockArthur F. Carlson
    • Aleck BlockArthur F. Carlson
    • B24D7/00B24D7/04B24D7/16B24D13/20B23P11/00
    • B24D13/20Y10T29/49835Y10T29/5343
    • An abrasive disc includes a rotatable sheet. Abrasive particles are disposed on a first side of the sheet to provide an abrasive action. Coupled to the sheet means are (1) a first portion defining at least one internal thread in spaced relationship to the opposite surface of the sheet for threaded coupling with an externally threaded mandrel, (2) a second portion extending from the first portion along the opposite surface of the sheet and providing a transmittal of force from the first portion and (3) a third portion extending from the second portion into coupled relationship with the sheet and receiving the transmitted force and providing a force for driving the sheet means. The first portion of the coupling defines a boss disposed on the opposite surface of the sheet in spaced relationship to the sheet and having an opening operative as a single-turn internal thread. The second portion of the coupling defines a flange disposed against the opposite surface of the sheet in a frictional, but non-adhering, relationship with the sheet. The third portion extends from the periphery of the second portion and defines drive fingers which extend through the sheet to retain the sheet in a driven relationship. The third portion of the coupling is bent against the abrasive surface of the sheet means. When thus bent, the third portion of the coupling means is disposed in flush relationship with the sheet means because there are no burrs produced on the sheet means when the drive fingers are driven through the sheet means.
    • 研磨盘包括可旋转的片材。 研磨颗粒设置在片材的第一侧上以提供研磨作用。 联接到片材装置是(1)限定与片材的相对表面间隔开的至少一个内螺纹的第一部分,用于与外螺纹心轴的螺纹联接,(2)第二部分从第一部分沿着 并且提供来自第一部分的力的传递,和(3)从第二部分延伸到与片材成耦合关系并接收传递的力并且提供用于驱动片材装置的力的第三部分。 联接器的第一部分限定了与片材相对的表面上设置的与凸起间隔开的凸起并具有作为单匝内螺纹操作的开口的凸台。 联接器的第二部分限定了以与片材摩擦但不粘附的关系设置在片材的相对表面上的凸缘。 第三部分从第二部分的周边延伸并且限定延伸穿过片材以将片材保持在驱动关系中的驱动指状物。 联接器的第三部分相对于纸张装置的研磨表面弯曲。 当这样弯曲时,连接装置的第三部分与片材装置平齐地设置,因为当驱动爪被驱动通过片装置时,在片装置上不产生毛刺。