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    • 7. 发明授权
    • Method of making micro-holes on metal plate
    • 在金属板上制作微孔的方法
    • US08800340B2
    • 2014-08-12
    • US13120466
    • 2009-07-24
    • Shih-Ming Lu
    • Shih-Ming Lu
    • B21D31/02
    • E04B1/8409B21D31/02B21D31/043E04B1/86
    • A method of making micro-holes on a metal plate includes: (A) feeding a metal plate on a workbench forward to extend beyond a shearing edge; (B) locating a punching head at a first position, and keeping a working space between the punching head and the workbench; (C) exerting a shearing force towards the workbench by the punching head; (D) bending the metal plate by the shearing force, and forming a plurality of spot-shaped cavities arranged in a row on a second surface; (E) bearing a shearing force on the first surface of the metal plate to form a linear groove; (F) deforming the metal plate by the shearing force to cause the spot-shaped cavities arranged in a row to communicate with the linear groove to form micro-holes; (G) the punching head returning to the first position and moving a working distance to a second position; (H) feeding the metal plate again; (I) the punching head repeating the above steps at the second position; (J) the punching head returning to the second position and then moving back to the first position to complete a processing cycle. The method can produce a maximum of micro-holes on a certain area of the metal plate, which can be used as a sound gobo with an enhanced sound-absorption rate.
    • 在金属板上制作微孔的方法包括:(A)将金属板向前馈入工作台以延伸超过剪切边缘; (B)将冲压头定位在第一位置,并且在冲压头和工作台之间保持工作空间; (C)通过冲压头向工作台施加剪切力; (D)通过剪切力使金属板弯曲,并且在第二表面上形成排列成一排的多个点状空腔; (E)在金属板的第一表面上承受剪切力以形成直线槽; (F)通过剪切力使金属板变形,使排列成一列的点状空腔与直线槽连通,形成微孔; (G)所述冲压头返回到所述第一位置并将工作距离移动到第二位置; (H)再次进给金属板; (I)冲头在第二位置重复上述步骤; (J)冲头返回到第二位置,然后移回到第一位置以完成处理循环。 该方法可以在金属板的特定区域上产生最大的微孔,其可以用作具有增强的吸声率的声波。