公开(公告)号：US06619100B2

公开(公告)日：2003-09-16

申请号：US09745597

申请日：2000-12-21

申请人： Thomas E. Berg ,  Rene D. Kumar ,  Glenn E. Sturgis

发明人： Thomas E. Berg ,  Rene D. Kumar ,  Glenn E. Sturgis

IPC分类号： B21D516

CPC分类号： G11B23/0035

摘要： A crimping tool is used to attach a metal hub plate to a plastic hub for a data storage disk. The hub is bonded to the data storage disk, and the metal hub plate allows the disk to be magnetically clamped to a spindle of a disk drive. The metal hub plate has a four tabs which are bent into respective recessed areas of the hub. The tool includes a plunger which is directed against the metal hub plate which the plate is held in a lower die assembly. The plunger includes four crimping jaws which slide against angled surfaces of the plunger. The sliding motion causes the crimping jaws to move radially inward towards each other. The lower surface of each jaw includes a cam surface and a prow. The cam surface slides against the tab, bending it to a predetermined shape, and then the prow contacts a base of the tab to bend it beyond the predetermined shape. In this way, the tabs, which are typically made of a resilient metal, are forced into the recessed areas and remain entirely within the recessed areas despite any spring-back that may occur after the bending has been completed.

摘要翻译： 使用压接工具将金属轮毂板连接到用于数据存储盘的塑料轮毂。 轮毂连接到数据存储盘，并且金属轮毂盘允许盘被磁力地夹紧到盘驱动器的主轴上。 金属轮毂板具有弯曲到轮毂的相应凹入区域中的四个翼片。 该工具包括一个柱塞，该柱塞指向金属毂板，该板被保持在下模组件中。 柱塞包括四个压接爪，其压靠柱塞的倾斜表面。 滑动运动导致压接爪彼此径向向内移动。 每个钳口的下表面包括凸轮表面和头盔。 凸轮表面相对于突片滑动，将其弯曲成预定的形状，然后扳手接触突片的基部以将其弯曲超过预定形状。 以这种方式，通常由弹性金属制成的突片被迫进入凹陷区域，并且完全保留在凹陷区域内，尽管在弯曲完成之后可能发生任何弹回。