公开(公告)号：US20080019787A1

公开(公告)日：2008-01-24

申请号：US11491637

申请日：2006-07-24

申请人： Karthikeyan Sampath ,  Wangyang Ni

发明人： Karthikeyan Sampath ,  Wangyang Ni

IPC分类号： B23B51/02

CPC分类号： B23B51/02 ,  B23B2222/28 ,  B23B2226/27 ,  B23B2226/275 ,  B23B2226/31 ,  B23B2228/10 ,  B23B2251/04 ,  B23B2251/14 ,  B23B2251/18 ,  B23B2251/44 ,  Y10T408/9097

摘要： A diamond coated drill capable of drilling holes in fiber reinforced composite materials. The drill is made from a tungsten carbide (WC) substrate with cemented cobalt (Co) in a range between about 3 to 10 wt. % and a diamond coating having a thickness in a range between 3 to 20 microns. The drill includes a shank, a longitudinal axis and includes two flutes at a helix angle that is in a range between 25 and 35 degrees with respect to the axis. A margin width is maintained between about 5 to 10 percent of the drill diameter. A body clearance diameter is maintained at between about 92 to 96 percent of the drill diameter. A web thickness before splitting is about 20 to 30 percent of the drill diameter. A clearance angle or lip relief angle is between about 10 and 20 degrees. A chisel edge angle is between about 105 and 120 degrees. A chisel edge length is up to about 0.035 mm. A splitting angle is between about 130 and 150 degrees. A notch angle is between about 30 and 40 degrees with respect to the drill axis. A notch rake angle lies between about −5 and 10 degrees. A split point angle is between about 70 and 100 degrees, and preferably about 90 degrees.

摘要翻译： 一种金刚石涂层钻孔机，可在纤维增强复合材料中钻孔。 该钻头由具有约3至10重量％的粘结钴（Co）的碳化钨（WC）基材制成。 ％和金刚石涂层，其厚度在3至20微米的范围内。 钻头包括柄部，纵向轴线，并且包括相对于轴线在25度和35度之间的螺旋角度的两个凹槽。 边缘宽度保持在钻头直径的约5％至10％之间。 身体间隙直径保持在钻头直径的约92％至96％之间。 分裂前的腹板厚度为钻头直径的约20％至30％。 间隙角度或唇部解除角度在约10度和20度之间。 凿边角度在约105度和120度之间。 凿边长度可达0.035毫米。 分裂角在约130和150度之间。 切口角相对于钻头轴线在约30度和40度之间。 切口前角位于约-5度和10度之间。 分裂角度在约70度和100度之间，优选地约为90度。