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发明名称
钻头
摘要
本发明之目的在于提供一种刃尖部经改良之钻头,其能使钻孔切削面部的切屑排出性良好,来获得切削效率之提高。该钻头,系在超硬合金制块体所构成之切刃块3,沿周方向以等角设置复数个切刃部3a、3b、3c,以形成于各切刃部之切削面6与腹侧面7的接合棱线为切刃4,使各切刃4之延长线在刃尖中心接合;且在刃尖中心部形成缺口槽8,在被切削的各切刃两端形成尖端部9。
申请公布号
TW200408518
申请公布日期
2004.06.01
申请号
TW092129116
申请日期
2003.10.21
申请人
宫永股份有限公司
发明人
宫永昌明
分类号
B28D1/14
主分类号
B28D1/14
代理机构
代理人
林镒珠
主权项
地址
日本
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