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    ACTIVE RECONFIGURABLE STRETCH FORMING
    33.
    发明申请
    ACTIVE RECONFIGURABLE STRETCH FORMING 审中-公开
    主动可重构拉伸成形

    公开(公告)号：US20100043511A1

    公开(公告)日：2010-02-25

    申请号：US12162317

    申请日：2007-01-23

    申请人： Anthony Ross Forsyth

    发明人： Anthony Ross Forsyth

    IPC分类号： B21D24/10 ,  B21D22/26 ,  B21D11/20

    CPC分类号： B21D37/10 ,  B21D11/085 ,  B21D25/00 ,  B21D25/02 ,  B21D31/04 ,  B21D37/02 ,  B21D37/04 ,  B21D53/00 ,  B21D53/883

    摘要： This invention concerns an active reconfigurable stretch forming tool, and in another aspect the invention is a method of stretch forming. The tool comprises an array of extensible shape forming elements which are driven in extension to produce the same force per unit area across a workpiece during shape forming. An array of limit switches are located in front of the array of shape forming elements, such that each shape forming element is driven in extension towards a respective limit switch during shape forming. In use, each limit switch is activated by the workpiece as it is shaped and each switch, upon activation, prevents further extension of the respective driven element. The tool and method are useful in the forming of three dimensional shapes in solid sheet metal or mesh, to produce panels for reflector antennas.

    摘要翻译： 本发明涉及一种主动可重构拉伸成形工具，另一方面，本发明是一种拉伸成型方法。 该工具包括可扩展形状元件的阵列，其被延伸地驱动以在形状形成期间在整个工件上产生与单位面积相同的力。 限位开关阵列位于形状形成元件阵列的前面，使得形状成形元件在形状成形期间朝着相应的限位开关延伸地驱动。 在使用中，每个限位开关在成形时由工件激活，并且每个开关在启动时防止相应的被驱动元件的进一步延伸。 该工具和方法可用于在实心金属板或网状物中形成三维形状，以产生用于反射器天线的面板。

    Method for forming a precision surface of large area
    34.
    发明授权
    Method for forming a precision surface of large area 失效
    形成大面积精密表面的方法

    公开(公告)号：US4574457A

    公开(公告)日：1986-03-11

    申请号：US634448

    申请日：1984-07-25

    申请人： Francis H. Farnum, III

    发明人： Francis H. Farnum, III

    IPC分类号： B21D26/02 ,  B21D53/88 ,  H01Q15/14 ,  B21D35/00

    CPC分类号： B21D26/02 ,  B21D53/883 ,  H01Q15/141 ,  Y10T29/49906 ,  Y10T29/49998

    摘要： A thin sheet is formed into a surface having compound curvature by vacuum forming the sheet against an array of support posts which have been adjusted to define the locus of the desired surface. A rigid frame is placed on the exposed back surface of the sheet and bonded thereto while the vacuum formed shape is maintained. Alternatively, a frame of beam members kerfed to make them compliant is placed on the back surface and bonded to the sheet which restores the structural integrity of the beams by briding the kerfs.

    摘要翻译： 通过将已经被调节以限定所需表面的轨迹的支撑柱阵列通过真空成形薄片而将薄片形成为具有复合曲率的表面。 将刚性框架放置在片材的暴露后的表面上，并且在保持真空形成形状的同时结合到其上。 或者，被切割以使其顺从的梁构件的框架被放置在后表面上并且结合到片材，其通过张紧切口来恢复梁的结构完整性。

    Method for making a die for stamping metal reflectors
    35.
    发明授权
    Method for making a die for stamping metal reflectors 失效
    冲压金属反射体冲模的方法

    公开(公告)号：US4424727A

    公开(公告)日：1984-01-10

    申请号：US187311

    申请日：1980-09-15

    申请人： John J. Mader

    发明人： John J. Mader

    IPC分类号： B21D37/20 ,  B21D53/88 ,  B21K5/20 ,  B21D37/10

    CPC分类号： B21D37/20 ,  B21D53/883 ,  Y10S72/702

    摘要： A method for making a metal stamping die suitable for use in forming sheet metal reflectors for photographic use. The structure of the metal stamping die is made in the manner of the method to compensate for spring-back characteristics of a material used to form a reflector by first constructing a test die which has a predetermined shape related to the desired reflector shape. A comparison is then made between a test workpiece made with the test die and the desired reflector shape to determine the die shape that produces a corresponding portion of the reflector shape. Finally, another die is constructed by shaping it in accordance with the comparison to obtain a final die shape that will acceptably produce the desired reflector shape.

    摘要翻译： 一种用于制造用于形成用于照相用途的金属板反射器的金属冲压模具的方法。 金属冲压模具的结构是通过首先构造具有与期望的反射器形状相关的预定形状的测试模具来补偿用于形成反射体的材料的弹回特性的方法。 然后，在由试验片制成的试验工件与所需的反射器形状之间进行比较，以确定产生反射器形状的相应部分的模具形状。 最后，通过根据比较对其进行成型来构造另一个模具，以获得可接受地产生所需反射器形状的最终模具形状。

    Forming apparatus
    36.
    发明授权
    Forming apparatus 失效
    成型装置

    公开(公告)号：US3975936A

    公开(公告)日：1976-08-24

    申请号：US588403

    申请日：1975-06-19

    申请人： Frederick M. Baldwin ,  Stanley J. Noesen

    发明人： Frederick M. Baldwin ,  Stanley J. Noesen

    IPC分类号： B21D26/14 ,  B21D53/88 ,  B21B9/00

    CPC分类号： B21D53/883 ,  B21D26/14

    摘要： Apparatus for forming hollow metal articles such as aluminum reflectors for Luminaires. The apparatus comprises a convex forming punch movable into a complementary hollow magnetic forming coil device. The forming punch is mounted on a base having an annular slot opening at the periphery of the forming punch and being connected to passages in the base for quickly evacuating the air between the workpiece and the punch prior to the magnetic forming operation.

    摘要翻译： 用于形成中空金属制品的装置，例如用于灯具的铝反射器。 该装置包括可移动成互补的中空磁性成形线圈装置的凸形成型冲头。 成型冲头安装在基座上，该基座在成形冲头的周边具有环形槽口，并与基座中的通道连接，以便在磁成形操作之前快速抽空工件与冲头之间的空气。

    Method and apparatus for magnetic forming
    37.
    发明授权
    Method and apparatus for magnetic forming 失效
    用于磁性成形的方法和装置

    公开(公告)号：US3581541A

    公开(公告)日：1971-06-01

    申请号：US3581541D

    申请日：1969-04-01

    申请人： GULF ENERGY & ENVIRON SYSTEMS

    发明人： WILDI PAUL

    IPC分类号： B21D26/14 ,  B21D53/88

    CPC分类号： B21D26/14 ,  B21D53/883

    摘要： A method and apparatus are described for magnetically forming a workpiece. A magnetic field is repetitively produced, the field being of a size for forming the workpiece in a subregion which is substantially smaller than the total region to be formed. The workpiece and the means producing the magnetic field are displaced relatively an amount which provides full coverage of the total region to be formed after a series of repetitions of the magnetic field.