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    • 21. 发明授权
    • Device for drawing sheet materials in particular sheet blanks
    • 用于在特定板坯中绘制板材的装置
    • US5255550A
    • 1993-10-26
    • US809161
    • 1991-12-18
    • Michel Dittlo
    • Michel Dittlo
    • B21D22/10B21D24/04B21D24/06B21D26/00
    • B21D22/10Y10T29/49805
    • A device is provided for drawing sheet materials, in particular, sheet blanks. The device includes a cushion of elastic material disposed in an enclosure, a die for forming the sheet blank, the die having a peripheral portion constituting an upper blank holder. The device also includes a lower blank holder for supporting and maintaining at least a portion of the sheet blank which is placed directly on the cushion of elastic material and cooperates with the upper blank holder for clamping the sheet blank in at least localized zones. The lower blank holder bears against a slidable element disposed around lateral faces of the cushion.
    • 提供了一种用于拉制片材的装置,特别是片材坯料。 该装置包括设置在外壳中的弹性材料缓冲垫,用于形成板坯的模具,模具具有构成上部坯料夹持器的周边部分。 该装置还包括一个用于支撑和保持片材坯料的至少一部分的下部坯件夹持件,其直接放置在弹性材料的衬垫上,并与上部坯件保持器配合,以将片材坯料夹紧在至少局部区域中。 下部坯料支撑在靠近垫子侧面设置的可滑动元件上。
    • 22. 发明授权
    • Apparatus and method for hydroforming sheet metal
    • 装置和方法用于水泥板金属
    • US5157969A
    • 1992-10-27
    • US443112
    • 1989-11-29
    • Ralph E. Roper
    • Ralph E. Roper
    • B21D20060101B21D22/10B21D24/08B21D24/14B21D26/02B21D26/021B21D26/025
    • B21D26/021B21D22/10B21D26/02B21D26/025Y10T29/49805
    • A self-contained apparatus for forming metal sheet is adapted for operation within a standard double action press having a base and outer and inner vertically reciprocating slides and includes a basic die mountable to the press and specific tooling replaceably mountable to the basic die. The basic die includes an upper shoe mountable to the outer slide, a lower shoe mountable atop the base and hydraulic cylinder assemblies connected to the lower shoe and mechanically actuatable by the inner slide for providing pressurized fluid to the specific tooling. The specific tooling includes mating upper and lower dies connected to the corresponding upper and lower shoes and movable between open and closed positions. A sheet metal blank positioned upon the lower die is wrapped around the lower die as the upper die is moved down to a closed position by the outer slide, the blank being clamped between the upper and lower dies whereby the periphery of the blank is securely gripped by gripper steels mounted all around a part print cavity in the upper die. The outer slide then dwells while the inner slide moves down, engaging and actuating the cylinder assemblies, causing hydraulic fluid to be forced into a region between the clamped blank and the lower die, the blank being 100% stretch formed into the part print cavity defined in the upper die.
    • 用于形成金属板的独立装置适于在具有基部和外部和内部和垂直往复滑动的标准双作用压力机中操作,并且包括可安装到压力机的基本模具和可替换地安装到基本模具的特定工具。 基本模具包括可安装到外滑动件的上鞋,可安装在底座顶部的下鞋和连接到下鞋的液压缸组件,并且可由内滑动器机械地致动,用于向特定工具提供加压流体。 具体的工具包括连接到相应的上鞋和下鞋并且可以在打开和关闭位置之间移动的配合的上,下模。 当上模通过外滑动件向下移动到关闭位置时,位于下模上的金属板坯被卷绕在下模上,坯料夹在上模和下模之间,从而使坯料的周边牢固地夹紧 通过夹持器将钢丝安装在上模的一部分印刷腔周围。 然后,外滑块在内滑块向下移动时接合并致动气缸组件,导致液压流体被迫进入被夹紧的坯件和下模之间的区域中,坯件被100%拉伸成形成在部件印刷腔中 在上模。
    • 26. 发明授权
    • Process modeling for superplastic forming of metal sheets
    • 金属板超塑性成型工艺建模
    • US4658362A
    • 1987-04-14
    • US685534
    • 1984-12-24
    • Dhananjay D. Bhatt
    • Dhananjay D. Bhatt
    • G06F17/50G06Q10/04G06F15/46B21D22/10B21D31/00G05B13/02
    • G06Q10/04G06F17/5009G06F2217/42
    • Methods for developing particular models which accurately predict the material, process and design parameters for superplastic forming of metal parts under optimum conditions consistent with the desired properties in the finished part. Generalized control equations are developed which enable designers to develop consistency of the forming parameters for materials from different lots. The invention permits control of superplastic forming in accordance with particular raw material microstructure and the effects of time, temperature, strain and strain rate during superplastic forming on the material microstructure, and establishes the relationship between the microstructure and the properties of the parts being formed. These methods applied to the specific area of superplastic forming of metal sheets exemplify a more generalized method of conducting systematic research to derive the maximum information from a minimum number of experiments involving available data.
    • 开发特定模型的方法,其准确地预测在最终条件下超塑性成形金属部件的材料,工艺和设计参数,与最终部件中所需的性能一致。 开发了广义控制方程,使设计人员可以开发来自不同批次的材料的成型参数的一致性。 本发明允许根据特定的原料微观结构控制超塑性成形以及在超塑性成形期间的时间,温度,应变和应变速率对材料微观结构的影响,并且确定了所形成部件的微结构与性质之间的关系。 应用于金属板超塑性成形的具体领域的这些方法举例说明了一种更广泛的进行系统研究的方法,以从涉及可用数据的最小数量的实验中导出最大信息。
    • 28. 发明授权
    • Bulge forming method and apparatus
    • 凸起成形方法和装置
    • US4437326A
    • 1984-03-20
    • US385838
    • 1982-06-07
    • Arne H. Carlson
    • Arne H. Carlson
    • B21D26/043B21D26/045B21D22/10
    • B21D37/16B21D26/043B21D26/045
    • An annular workpiece (114), in blank form, is snugly received within a central opening portion of an annular die member (78) having a radially inwardly directed die face. The two ends of the workpiece make sealing contact with radially inwardly sloping outer sidewall portions (118) of annular seal grooves (116) formed in support members (36, 54) for the two ends of the workpiece (114). The support members (36, 54) and the annular die member (78) are heated, by the use of induction heating apparatus (38, 42, 80, 100, 102, 52, 54), while a molten metal is pressure fed into the interior of the workpiece. The molten metal is pressurized while it is within the workpiece and it functions to both heat the workpiece and press it radially outwardly into forming contact with the die face. As the workpiece is being stretched in this manner and is taking the shape of the die face, the two end support members (36, 54) are being moved relatively together. As such members (36, 54) move, the end portions of the workpiece are turned inwardly by, and slide relatively along, the radially inwardly sloping outer surfaces (118) of the seal grooves (116). The pressure within the workpiece acts on inwardly turning lips being formed at the ends of the workpiece, pressing them radially outwardly into tight sealing contact with the sloping surfaces (118) of the grooves (116). Induction heating (64, 124) is used for heating the molten metal while it is within a storage vessel (64) and also while it is inside the workpiece (38, 42).
    • 以空白形式的环形工件(114)紧密地容纳在具有径向向内定向的模具面的环形模具构件(78)的中心开口部分内。 工件的两端与形成在工件(114)的两端的支撑构件(36,54)中的环形密封槽(116)的径向向内倾斜的外侧壁部分(118)密封接触。 通过使用感应加热装置(38,42,80,100,102,52,54)将支撑构件(36,54)和环形模具构件(78)加热,同时将熔融金属压入 工件的内部。 熔融金属在工件内部被加压,并且其功能是加热工件并将其径向向外挤压以与模具表面形成接触。 当工件以这种方式被拉伸并且呈现模具面的形状时,两个端部支撑构件(36,54)相对地相对移动。 当这些构件(36,54)移动时,工件的端部沿密封槽(116)的径向向内倾斜的外表面(118)向内转动并相对滑动。 工件内的压力作用在形成在工件的端部的向内转动的唇缘上,将其径向向外挤压,以与凹槽(116)的倾斜表面(118)紧密密封接触。 感应加热(64,124)用于在熔融金属在储存容器(64)内以及在工件(38,42)内时加热熔融金属。