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1. 发明申请

WO2013005010A1 TWIST DRILL AND METHOD OF DRILLING COMPOSITE MATERIALS, USE AND METHOD REGRINDING AND MANUFACTURING THEREOF 审中-公开
标题翻译： TWIST钻孔和钻孔复合材料的方法，使用和方法回收和制造
公开(公告)号：WO2013005010A1
公开(公告)日：2013-01-10
申请号：PCT/GB2012/051525
申请日：2012-06-29
申请人： SANDVIK INTELLECTUAL PROPERTY AB , GOH, Wan Tsin
发明人： GOH, Wan Tsin
IPC分类号： B23B51/02
CPC分类号： B23B51/02 , B23B35/00 , B23B2226/275 , B23B2251/04 , B23B2251/043 , B23B2251/18 , B23P15/32 , B24B3/26 , Y10T408/03 , Y10T408/9097
摘要： The present application provides a twist drill for drilling composite materials, the twist drill comprising: a shank; a drill body (2); a drill tip comprising a cutting edge (10), a chisel edge, a secondary chisel edge, wherein the secondary chisel angle is 145° to 165°, the drill tip also having a point angle of 70° to 100°; and a flute (8) extending from the drill tip (6) to the drill body (4), the flute having a constant helix, the helix angle of the flute being selected from the range 45° to 55°, The present application also provides a method of drilling a composite material comprising fibres using the drill of the present application. Suitably the composite material is carbon fibre reinforced plastic or glass fibre reinforced plastic, optionally being a laminate material such that the method comprises stack drilling. Embodiments achieve a combination of good hole quality, good tool life and good hole size spread.
摘要翻译：本申请提供了一种用于钻复合材料的麻花钻，该麻花钻包括：柄; 钻体（2）; 钻尖，其包括切削刃（10），凿刃，副凿刃，其中所述次凿角为145°至165°，所述钻尖还具有70°至100°的点角; 以及从所述钻头（6）延伸到所述钻体（4）的凹槽（8），所述凹槽具有恒定的螺旋，所述凹槽的螺旋角选自45°至55°的范围。本申请还提供了使用本申请的钻头钻包含纤维的复合材料的方法。适当地，复合材料是碳纤维增强塑料或玻璃纤维增强塑料，可选地是层压材料，使得该方法包括堆垛钻孔。实施例实现了良好的孔质量，良好的刀具寿命和良好的孔尺寸传播的组合。

2. 发明申请

WO2011135277A1 TWIST DRILL FOR ADVANCED MATERIALS 审中-公开
标题翻译：用于高级材料的TWIST钻孔
公开(公告)号：WO2011135277A1
公开(公告)日：2011-11-03
申请号：PCT/GB2011/000478
申请日：2011-03-29
申请人： DORMER TOOLS LIMITED , GOH, Wan Tsin , LIMB, John, Robert
发明人： GOH, Wan Tsin , LIMB, John, Robert
IPC分类号： B23B51/02
CPC分类号： B23B51/02 , B23B2226/27 , B23B2226/36 , B23B2251/046 , B23B2251/14 , B23B2251/18 , B23B2251/606 , Y10T408/03 , Y10T408/906 , Y10T408/9097
摘要： The present invention is concerned with twist drills for drilling of composite materials such as carbon fibre reinforced plastic (CFRP) and glass fibre reinforced plastic (GFRP). The present invention proposes that a twist drill (2) is provided with a variable helix having a defined start and finish helix angle, in combination with primary and secondary relief angles such that the drill (2) is adapted to minimise thrust force, particularly when used for drilling fibre - containing composite materials and especially for hand drilling. Start and finish helix angles of 50° and 10°; 50° and 30°; and 30° and 10° have been shown to provide excellent cutting performance and exit hole quality. A large secondary chisel edge angle (24) has also been found to contribute to excellent performance with composite materials, including stack machining.
摘要翻译：本发明涉及用于钻孔复合材料如碳纤维增强塑料（CFRP）和玻璃纤维增强塑料（GFRP）的麻花钻。本发明提出，麻花钻（2）具有具有确定的起始和终止螺旋角的可变螺旋，与初级和次级安全角度相结合，使得钻（2）适于使推力最小化，特别是当用于钻孔含纤维复合材料，特别适用于手工钻孔。开始和完成50°和10°的螺旋角; 50°和30°; 已经显示了30°和10°，以提供优异的切割性能和出口孔质量。还发现，大型二次凿边角（24）可以有助于复合材料的优异性能，包括堆垛加工。

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