Method for drilling circuit boards
    222.
    发明授权
    Method for drilling circuit boards 有权
    电路板钻孔方法

    公开(公告)号:US06200074B1

    公开(公告)日:2001-03-13

    申请号:US09287811

    申请日:1999-04-07

    Abstract: A method and materials for drilling through-holes in printed circuit boards with a drilling tool is disclosed. The method involves the use of a lubricating entry material placed on the top surface of a stack of printed circuit boards and a lubricating backup board placed beneath the bottom surface of the stack of printed circuit boards. The lubricating entry material has a core with skins attached on both sides by a lubricant/adhesive. Similarly, the backup board has a core with skins attached on both sides by a lubricant/adhesive. The skins are hard enough to support the top and bottom surfaces of the printed circuit boards and thereby reduce burring at the entry point and exit point of the through-hole. The lubricant/adhesive coats the drilling tool during the drilling operation to reduce friction and thereby reduce the temperature of the drilling tool.

    Abstract translation: 公开了一种用于在具有钻孔工具的印刷电路板中钻通孔的方法和材料。 该方法包括使用放置在印刷电路板堆叠的顶表面上的润滑入口材料和布置在印刷电路板堆叠的底表面下方的润滑支撑板。 润滑进入材料具有芯,其两侧通过润滑剂/粘合剂附着表皮。 类似地,备用板具有通过润滑剂/粘合剂在两侧附着表皮的芯。 表皮很难承受印刷电路板的顶表面和底表面,从而减少通孔入口点和出口处的毛刺。 润滑剂/粘合剂在钻孔操作期间涂覆钻孔工具以减少摩擦,从而降低钻具的温度。

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