公开(公告)号：US20040247406A1

公开(公告)日：2004-12-09

申请号：US10765847

申请日：2004-01-29

Applicant: SANDVIK AB

Inventor： Giovanna Malagnino ,  Roberto Troilo

IPC: B23G005/06

CPC classification number: B23G5/06 ,  B23G2200/48 ,  B23G2225/28 ,  B23G2225/32 ,  B23G2225/52 ,  B23G2225/56 ,  B23G2225/60 ,  B23G2240/36 ,  Y10T408/78 ,  Y10T408/904 ,  Y10T408/90467 ,  Y10T408/9048

Abstract: A threading tap for cutting threads in blind holes includes an elongated body with a central axis, the body having at a rear end a connector portion, and having at a front end a threading portion. The threading portion is provided with at least one helical thread-cutting structure and interconnected flank portions defining at least one helical flute which interrupts the helical thread cutting structure. The flank portions present exposed surfaces that are steam tempered. The rest of the tap is coated by PVD.

Abstract translation: 用于在盲孔中切割螺纹的螺纹丝锥包括具有中心轴线的细长体，该主体在后端具有连接器部分，并且在前端具有螺纹部分。 该螺纹部分设置有至少一个螺旋切线结构和互连的侧面部分，其限定了至少一个中断螺旋切割结构的螺旋槽。 侧面部分呈现蒸汽回火的暴露表面。 水龙头的其余部分用PVD涂覆。