drill

专利名称：DRILL

发明人：KazuteruTakai

申请号：US14353399

申请日：20111104

公开号：US2A1

公开日：20141002

专利内容由知识产权出版社提供

专利附图：

摘要：Adrillincluding:achipdischargeflute;andacuttingedge,thecuttingedge

beingmadeupofaconcavely-curvedcuttingedgeportionformedonaninner

circumferentialsideandaconvexly-curvedcuttingedgeportionformedonanouter

circumferentialside,thedrillfurtherincludingacrossctionorthogonaltoanaxial

centerhavingafirstconvexcurvecorrespondingtotheconvexly-curvedcuttingedge

portionandafirstconcavecurvecorrespondingtotheconcavely-curvedcuttingedge

portioninterctingwitheachother,aflankfollowingthecuttingedgeonthetipsurface

havinganorthogonalclearanceangleβformedwithinanangularrangeof9to20

degrees,andaridgelineofthecuttingedgehavingachamferformedwithawidthCW

withinarangeof0.002Dto0.02D(whereDisadrilldiameter).

申请人：KazuteruTakai

地址：Toyokawa-shiJP

国籍：JP

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