The new type Chinese multi-facet drill(CMFD) developed from the common twist drill by rationally regrinding in order to solve problems existing with the twist drill has an excellent performance when cutting.
群钻是针对普通麻花钻所存在的问题,进行合理修磨而创制的新钻型,其切削性能非常优异。
参考来源 - 基于GrindSmart 620XS工具磨床的群钻数学模型研究·2,447,543篇论文数据，部分数据来源于NoteExpress
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