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公开(公告)号:EP0407093B1
公开(公告)日:1992-09-30
申请号:EP90307061.3
申请日:1990-06-28
申请人: EMHART INC.
CPC分类号: F16B25/103 , F16B25/0031 , F16B25/0084 , F16B25/0089 , Y10T408/906
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公开(公告)号:EP0407093A1
公开(公告)日:1991-01-09
申请号:EP90307061.3
申请日:1990-06-28
申请人: EMHART INC.
CPC分类号: F16B25/103 , F16B25/0031 , F16B25/0084 , F16B25/0089 , Y10T408/906
摘要: A self-drilling and thread forming fastener for fastening a first softer workpiece, such as wood, to a second harder workpiece, such as metal, is described The fastener features wings (87, 88) of improved configuration including positive angle of attack, positive cutting edge relief angles, teardrop-like crescent shape cross section and knife-like cutting edge which exhibit faster drill times through wood.
摘要翻译: 描述了用于将第一较软的工件(例如木材)紧固到第二较硬工件(例如金属)上的自钻和成形紧固件。紧固件具有改进构型的翼(87,88),其包括正迎角,正 切割刃角度,泪珠状月牙形截面和刀形切割刃,通过木材显示更快的钻孔时间。
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