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    Apparatus for performing a hydroforming operation
    3.
    发明授权
    Apparatus for performing a hydroforming operation 有权
    用于执行液压成型操作的装置

    公开(公告)号：US07047780B2

    公开(公告)日：2006-05-23

    申请号：US10178911

    申请日：2002-06-24

    申请人： Richard A. Marando ,  Eric M. Schrack ,  James C. Larkin ,  Edward Drost ,  Jeffrey P. Dziki ,  Joseph J. Vasalani ,  Daniel E. Hunter

    发明人： Richard A. Marando ,  Eric M. Schrack ,  James C. Larkin ,  Edward Drost ,  Jeffrey P. Dziki ,  Joseph J. Vasalani ,  Daniel E. Hunter

    IPC分类号： B21D26/02 ,  B21D37/14

    CPC分类号： B21D37/04 ,  B21D26/02 ,  B21D26/025 ,  B21D26/039 ,  B21D37/14

    摘要： A hydroforming apparatus includes upper and lower platens that are connected together by tie rods extending through respective compression tubes. An upper die section is carried on the upper platen by a generally C-shaped suspension arm, while a lower die section is carried on the lower platen. The upper and lower die sections have recessed areas formed therein that define a die cavity. Lift assemblies are provided on the lateral ends of the hydroforming apparatus for selectively elevating the lower die section upwardly into engagement with the upper die section. When the lower die section is elevated by the lift assemblies, a workpiece is enclosed within the die cavity. A bolster is then moved between the hydroforming die and the lower platen. A cylinder array containing a plurality of pistons is next hydraulically actuated so as to securely clamp the hydroforming die between the cylinder array and the lower platen. While the cylinder array is actuated, pressurized fluid is supplied within the workpiece, deforming it into conformance with the die cavity.

    摘要翻译： 液压成形装置包括通过延伸穿过相应压缩管的拉杆连接在一起的上压板和下压板。 上模具部分通过大致C形悬架臂承载在上压板上，而下模部分承载在下压板上。 上模具部分和下模具部分具有形成在其中的凹陷区域，其限定模腔。 提升组件设置在液压成形设备的侧端上，用于选择性地将下模部分向上升高与上模部分接合。 当下模部分被升降组件升高时，工件被封闭在模腔内。 然后在液压成形模和下压板之间移动摇枕。 接下来液压驱动包含多个活塞的气缸阵列，以便将液压成型模具牢固地夹在气缸阵列和下压板之间。 当气缸阵列被致动时，加压流体在工件内被供应，使其变形成与模腔一致。

    Device and method for expansion forming
    4.
    发明申请
    Device and method for expansion forming 有权

    公开(公告)号：US20060075796A1

    公开(公告)日：2006-04-13

    申请号：US10513707

    申请日：2003-04-04

    申请人： Keijo Hellgren

    发明人： Keijo Hellgren

    IPC分类号： B21D26/02

    CPC分类号： B21D37/12 ,  B21D26/039 ,  B21D26/047

    摘要： The present invention relates to a method and a device for expansion forming of an article. According to at least one aspect of the invention, an expansion forming tool is pressure-compensated from two sides, pressure differences on each side being equalized by means of a pressure transmitter, which is applicable to the tool.

    Apparatus for performing hydroforming operation
    7.
    发明授权
    Apparatus for performing hydroforming operation 有权

    公开(公告)号：US06536251B2

    公开(公告)日：2003-03-25

    申请号：US09822806

    申请日：2001-03-30

    申请人： Richard A. Marando ,  Eric M. Schrack ,  Jeffrey P. Dziki ,  Joseph J. Vasalani

    发明人： Richard A. Marando ,  Eric M. Schrack ,  Jeffrey P. Dziki ,  Joseph J. Vasalani

    IPC分类号： B21D2602

    CPC分类号： B21D37/12 ,  B21D26/025 ,  B21D26/039 ,  B21D37/14

    摘要： A hydroforming apparatus includes an upper platen carrying an upper die section and a lower platen carrying a lower die section. The platens are connected together by tie rods extending through respective compression tubes. The upper and lower die sections have recessed areas formed therein that define a die cavity. When the lower die section is moved to a lowered position, a workpiece can be disposed in the recessed area formed therein. Then, the lower die section and the workpiece are elevated by cylinders such that the workpiece is enclosed within the die cavity and mechanically deformed by the cooperated upper and lower die sections. A support block is then moved between the hydroforming die and the lower platen. A cylinder array containing a plurality of pistons is next hydraulically actuated so as to securely clamp the hydroforming die between the cylinder array and the lower platen. While the cylinder array is actuated, pressurized fluid is supplied within the workpiece, deforming it into conformance with the die cavity.

    Hydroforming method and hydroforming device
    8.
    发明授权
    Hydroforming method and hydroforming device 失效
    液压成型方法和液压成型装置

    公开(公告)号：US06530252B1

    公开(公告)日：2003-03-11

    申请号：US09598727

    申请日：2000-06-21

    申请人： Masakazu Hashimoto ,  Shinjiro Sato ,  Takashi Koshimizu ,  Hiroshi Hosoya ,  Kazuo Kitazawa ,  Hiromichi Miyata ,  Shinichi Kaji

    发明人： Masakazu Hashimoto ,  Shinjiro Sato ,  Takashi Koshimizu ,  Hiroshi Hosoya ,  Kazuo Kitazawa ,  Hiromichi Miyata ,  Shinichi Kaji

    IPC分类号： B21D2602

    CPC分类号： B21D26/025 ,  B21D26/039 ,  Y10T29/49805

    摘要： A plurality of closing cylinder devices are provided between a bolster of a press machine and a bed containing a lower mold of a hydroforming device. An upper mold is attached to a slide of the press machine. The upper mold and lower mold come together to form a cavity having the shape of the exterior of the desired molded product. A closing block, being movable between a first position which is between the slide and a crown of the press machine, and a second position, which avoids the slide, permitting free movement of the slide from the crown to the lower mold. When a material to be hydroformed is place in the lower mold, the upper mold is lowered. The closing block is fit into its first position, thereby restricting movement of the slide in the vertical direction. A inner work pressure is provided by a fluid inside the material to be molded. The closing cylinder devices provide a pressure, based upon the inner work pressure, to maintain the cavity at the desired shape, preventing the upper mold and the lower mold from being separated by the inner work pressure.

    摘要翻译： 多个封闭气缸装置设置在压力机的摇枕和包含液压成形装置的下模的床之间。 上模具附接到压机的滑块上。 上模具和下模具一起形成具有所需模制产品的外部形状的空腔。 闭合块可在滑动件和压力机的顶部之间的第一位置和避免滑动的第二位置之间移动，允许滑块从冠部自由移动到下模具。 当液压成型材料放置在下模中时，上模降低。 闭合块配合到其第一位置，从而限制滑块沿垂直方向的移动。 内部工作压力由待模制材料内的流体提供。 闭合气缸装置基于内部工作压力提供压力，以将空腔保持在期望的形状，防止上模具和下模具被内部工作压力分离。

    Device for hydraulic high pressure forming of a tubular component or a blank
    9.
    发明授权
    Device for hydraulic high pressure forming of a tubular component or a blank 有权
    用于液压高压成型的管状部件或坯料的装置

    公开(公告)号：US06493913B2

    公开(公告)日：2002-12-17

    申请号：US09726795

    申请日：2000-11-30

    申请人： Wolfgang Streubel ,  Thomas Harbarth

    发明人： Wolfgang Streubel ,  Thomas Harbarth

    IPC分类号： B23P2300

    CPC分类号： B21D26/033 ,  B21D26/039 ,  B30B1/32 ,  B30B1/34 ,  Y10T29/5185 ,  Y10T29/5199

    摘要： In a device for hydraulic forming of a tubular component under high inner pressure compressive conditions in a lower die and an upper die of a forming tool, the upper die can be coupled for relative limited movement by at least one piston-cylinder unit containing a hydraulic fluid with the press plunger of a travel-limited mechanical press and the cylinder interior of the piston-cylinder unit can be coupled for providing fluid communication with the interior of the component. Alternatively, in the device for hydraulic forming of a blank under high pressure compressive conditions in a forming tool comprising a lower die and an upper die, the upper die can be coupled for relative limited movement by at least one piston-cylinder unit containing a hydraulic fluid with the press plunger of a travel-limited mechanical press and the cylinder chamber of the piston-cylinder unit can be coupled for establishing fluid communication with the forming space of the forming tool.

    摘要翻译： 在用于在下模具和成形工具的上模具中的高内压压缩条件下液压成形管状部件的装置中，上模可以通过至少一个包含液压的活塞 - 缸单元而联接成相对有限的运动 具有行程限制机械压力机的压力机构的活塞和活塞 - 气缸单元的气缸内部的流体可以联接以提供与部件内部的流体连通。 或者，在用于在包括下模和上模的成形工具中在高压压缩条件下液压成形坯料的装置中，上模能够通过至少一个包含液压的活塞 - 缸单元联接以进行相对有限的运动 具有行进限制机械压力机的压力机构的活塞和活塞 - 气缸单元的气缸室的流体可以联接成与成形工具的成形空间建立流体连通。

    Mechanical press structure adapted to perform hydroforming operations
    10.
    发明授权
    Mechanical press structure adapted to perform hydroforming operations 有权
    适用于执行液压成型操作的机械压力机结构

    公开(公告)号：US06298701B1

    公开(公告)日：2001-10-09

    申请号：US09650958

    申请日：2000-08-29

    申请人： Richard A. Marando

    发明人： Richard A. Marando

    IPC分类号： B21D2602

    CPC分类号： B21D26/025 ,  B21D26/039 ,  B30B1/003 ,  B30B1/26 ,  Y10T29/49805

    摘要： A mechanical press is adapted to perform a hydroforming operation. The press includes a stationary base supporting a bolster that carries a lower die section, a movable slide that carries an upper die section, and a drive mechanism for selectively raising and lowering the slide relative to the base. An inflatable bladder is disposed between the base and the bolster. Initially, the drive mechanism is operated to lower the slide to its bottom dead center position such that the die sections enclose a workpiece within a die cavity. Then, pressurized fluid is supplied within the workpiece to expand it outwardly into conformance with the die cavity. At the same time, pressurized fluid is also supplied to the interior of the inflatable bladder. The application of such pressurized fluid causes the inflatable bladder to be physically expanded, causing the bolster carrying the lower die section to be raised relative to the base. The magnitude of this force is preferably selected to be approximately equal to the magnitude of the outwardly directed force exerted by the workpiece against the lower die section and, thus, the bolster. As a result, the lower die section is urged upwardly to remain in position relative to the upper die section during the hydroforming operation. In effect, the inflatable bladder pre-stresses the frame of the press and fills any extra space created by the deflections of the various components of the frame, thereby retaining the die sections and in position during the hydroforming operation. As a result, the press can be adapted to hydroform relatively large and thick-walled workpieces, such as vehicle frame components.

    摘要翻译： 机械压力机适于执行液压成型操作。 压力机包括支撑承载下模具部分的垫块的固定基座，承载上模具部分的可移动滑动件以及用于相对于基座选择性地升高和降低滑块的驱动机构。 可充气囊设置在基座和枕垫之间。 最初，驱动机构被操作以将滑块降低到其下死点位置，使得模具部分在模腔内包围工件。 然后，加压流体在工件内被供应以使其向外膨胀成与模具腔一致。 同时，加压流体也被供应到可充气囊的内部。 这种加压流体的应用使得可充气气囊物理膨胀，从而使携带下模部分的垫块相对于底座升高。 该力的大小优选地被选择为近似等于由工件对下模部分施加的向外指向的力的大小，并且因此是垫片。 结果，在液压成型操作期间，下模部分被向上推动以相对于上模部分保持在适当位置。 实际上，可膨胀气囊预应力于压机的框架，并且填充由框架的各种部件的偏转产生的任何额外的空间，从而在液压成形操作期间保持模具部分并保持在适当位置。 因此，压力机可适用于将相对较大且厚壁的工件（例如车架部件）进行液压。