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    • 2. 发明授权
    • Process for manufacturing a captive screw
    • 制造固定螺丝的方法
    • US06086480A
    • 2000-07-11
    • US301005
    • 1999-04-28
    • Thomas J. EllisEdward A. McCormackHarry L. Dickerson
    • Thomas J. EllisEdward A. McCormackHarry L. Dickerson
    • B23P19/08B21D22/00B21D22/20B21D28/00B21D53/00B21G5/00B21J5/00B21K1/00B21K21/02B23G9/00F16B5/02F16B41/00
    • B21K1/00B21D22/206B21D53/00B21K21/02F16B41/002F16B5/0208
    • A method of making a knob and ferrule for a captive screw is disclosed, the knob integrally attached to the screw, the ferrule attachable to a panel. The method of making the knob includes providing an aluminum alloy base metal for the knob, pressing by cold-forming the base material into a generally cylindrical cup-shaped article using at least one pressing operation, the cup having a generally cylindrical side wall, removing any base material situated outside the perimeter of the cup-shaped cylindrical article, and providing a hole in the bottom of the cup, coaxial with the hollow cylindrical walls of the cup, thereby forming the knob. The method of making the ferrule includes providing a metal base material for the ferrule, pressing the base material, by cold-forming, into a cylindrical article using at least one pressing operation, the cylindrical article having a cylindrical side wall having an outer surface, cold-forming an attachment device an end of the ferrule; and removing any base material situated outside the perimeter of the cylindrical article, thereby forming the ferrule. All major parts of the captive screw, including the knob, ferrule and screw may be cold formed.
    • 公开了一种制造用于固定螺钉的旋钮和套圈的方法,所述旋钮一体地附接到螺钉,可附接到面板的套圈。 制作旋钮的方法包括提供用于旋钮的铝合金基底金属,通过使用至少一个按压操作将基底材料冷成型为大致圆柱形的杯形制品进行压制,所述杯具有大致圆柱形的侧壁,去除 位于杯形圆柱形物品周边外部的任何基材,并且在杯的底部提供与杯子的中空圆柱形壁同轴的孔,由此形成旋钮。 套圈的制造方法包括为套圈提供金属基材,通过至少一次按压操作将基材冷成型为圆筒形的制品,该圆筒形制品具有一个具有外表面的圆柱形侧壁, 将附接装置冷成型为套圈的端部; 并且移除位于圆柱形制品周边外侧的任何基材,由此形成套圈。 固定螺丝的所有主要部件,包括旋钮,套圈和螺钉都可能是冷成型的。