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    • 3. 发明申请
    • HYDROFORMING FLUSH SYSTEM
    • 加氢冲洗系统
    • WO0162410A3
    • 2002-07-11
    • PCT/CA0100164
    • 2001-02-13
    • COSMA INT INCJANSSEN ANDREAS GHORTON FRANK A
    • JANSSEN ANDREAS GHORTON FRANK A
    • B21D26/041B21D26/047B21D28/28B21D26/02B21D45/00
    • B21D45/003B21D26/041B21D26/047
    • A hydroforming assembly (10) has a plurality of die structures (20, 21) that are mounted on a press for reciprocating movement between open and closed conditions. The die structures have cooperating die surfaces (22) defining a die cavity (23) when in the closed condition and receive a metallic tube blank (24) when in the open conditions. A hydroforming fluid supply system has tube-end engaging structures (25) that are movable to selectively and sealingly engage opposite ends of the tube blank. The hydroforming fluid supply system provides pressurized fluid into an interior of the tube blank (24) in order to expand the tube blank outwardly into conformity with the die cavity (23). A punch (52) extends within a passage (51) of at least one of the die structures. The punch (52) is movable between retracted and extended positions. A punch driving assembly (54) drives the punch between the retracted and extended positions to punch a hole into the expanded tube blank. A flushing system (30) communicates with the die cavity (23) providing a flushing fluid flow through the interior of the expanded tube blank.
    • 液压成形组件(10)具有多个模具结构(20,21),其安装在压力机上用于在打开和关闭状态之间往复运动。 模具结构具有配合的模具表面(22),其在处于闭合状态时限定模腔(23),并且当处于开放状态时接收金属管坯(24)。 液压成形流体供应系统具有管端接合结构(25),其可移动以选择性地并密封地接合管坯的相对端。 液压成形流体供应系统将加压流体提供到管坯(24)的内部,以便将管坯向外扩展成与模腔(23)一致。 冲头(52)在至少一个模具结构的通道(51)内延伸。 冲头(52)可在缩回位置和伸出位置之间移动。 冲头驱动组件(54)在缩回位置和延伸位置之间驱动冲头,以将孔冲入膨胀管坯中。 冲洗系统(30)与模腔(23)连通,提供穿过膨胀管坯内部的冲洗流体流。