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公开(公告)号:US4294319A
公开(公告)日:1981-10-13
申请号:US33305
申请日:1979-04-25
申请人: Karlheinz Guergen
发明人: Karlheinz Guergen
CPC分类号: E21B10/58 , E21B10/40 , E21B10/445
摘要: A replaceable cutter head for rotary percussion drills having a pilot cutter on the end of a drill stem with a main cutter head surrounding the pilot cutter, the main cutter head having hammering/chipping cutters and milling cutters arranged along radial lines extending from the pilot cutter to the outer periphery of the main cutter head in alternate arrays, either along the radial cutter lines or on alternate radial cutter lines, or both.
摘要翻译: 一种用于旋转冲击钻头的可更换刀头,在钻杆的端部具有一个先导切割器,其中包括主切割器的主刀头,主刀头具有锤击/切屑切割器和铣刀,沿着从引导刀具延伸的径向线布置 或者沿着径向切割线或交替的径向切割线,或两者,以交替排列的方式连接到主切割头的外周。