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    • 3. 发明申请
    • DEVICE FOR PRODUCING AT LEAST ONE UNDERCUT IN A SLOTTED OR CLOSED PROFILED SHEET SECTION
    • 用于在一个或多个封闭的剖面图中生产至少一个底层的装置
    • US20160121383A1
    • 2016-05-05
    • US14897635
    • 2014-05-02
    • THYSSENKRUPP STEEL EUROPE AG
    • Thomas GROßERÜSCHKAMPThomas FLÖTHMichael BRÜGGENBROCK
    • B21D13/04
    • B21D13/04B21D5/015B21D53/88
    • A device for manufacturing at least one undercut in a sheet-metal profile that is slotted or closed may include an inner core portion and an outer core portion, which together can be inserted within the sheet-metal profile and/or may support a semi-finished sheet-metal product from which the sheet-metal profile is formed. The inner core portion and the outer core portion may have faces that mate with one another such that when the inner core portion rotates or translates relative to the outer core portion, the outer core portion is forced away from the inner core portion. To cause this behavior, the faces may be undulating, inclined, or cam-like, for example. In effect, a cross-sectional profile of the device may be reduced at least for purposes of extracting the device from the sheet-metal profile after the undercuts have been formed.
    • 用于制造开槽或封闭的板金属型材中的至少一个底切的装置可以包括内芯部分和外部芯部分,它们可以一起插入到金属片材中,和/或可以支撑半成品, 成形的金属板材,其中形成有金属板型材。 内芯部和外芯部可以具有彼此配合的表面,使得当内芯部分相对于外芯部分旋转或平移时,外芯部分被迫离开内芯部分。 为了引起这种情况,例如,面部可以起伏,倾斜或凸轮状。 实际上,至少为了在形成底切之后从金属板型材提取装置的目的,可以减小装置的横截面轮廓。