公开(公告)号：US20130028677A1

公开(公告)日：2013-01-31

申请号：US13576858

申请日：2011-01-27

Applicant: Juergen Schwaegert ,  Peter Sollfrank

Inventor： Juergen Schwaegert ,  Peter Sollfrank

IPC: B23B51/02 ,  B24B3/24

CPC classification number: B23P15/32 ,  B23B51/02 ,  B23B2251/244 ,  B23B2251/54 ,  B24B1/00 ,  B24B3/24 ,  B24B19/022 ,  Y10T408/9095

Abstract: A method for manufacturing a drill bit (1), wherein in a first step the chip flutes (12) are ground into a round rod, in a second step the round rod is ground down to its outer diameter (15, 16) with simultaneous grinding of the drill-bit back (13), and wherein in a third step the drill-bit front (4) is ground, and a drill bit (1) having at least one chip flute (12) and one secondary cutting edge and one drill-bit back (13) adjoining the secondary cutting edge, the drill-bit back (13) sloping downwards as the distance from the secondary cutting edge increases, in order to create a clearance that becomes continuously larger as the distance from the point of intersection (19) of the secondary cutting edge with the drill-bit back (13) increases.

Abstract translation: 一种用于制造钻头（1）的方法，其中在第一步骤中，所述切屑槽（12）被研磨成圆棒，在第二步骤中，所述圆杆被下降到其外径（15,16），同时 研磨钻头后部（13），并且其中在第三步骤中研磨钻头前面（4），并且钻头（1）具有至少一个切屑槽（12）和一个次切削刃，以及 与第二切削刃相邻的一个钻头后部（13），随着与次级切削刃的距离增加，钻头后部（13）向下倾斜，以便产生随着距离点的距离而变得连续更大的间隙 二次切削刃与钻头后端（13）的交叉点（19）增加。

公开(公告)号：US09403246B2

公开(公告)日：2016-08-02

申请号：US13576858

申请日：2011-01-27

Applicant: Juergen Schwaegerl ,  Peter Sollfrank

Inventor： Juergen Schwaegerl ,  Peter Sollfrank

IPC: B23B51/02 ,  B23P15/32 ,  B24B1/00 ,  B24B3/24 ,  B24B19/02

CPC classification number: B23P15/32 ,  B23B51/02 ,  B23B2251/244 ,  B23B2251/54 ,  B24B1/00 ,  B24B3/24 ,  B24B19/022 ,  Y10T408/9095

Abstract: A method for manufacturing a drill bit (1), wherein in a first step the chip flutes (12) are ground into a round rod, in a second step the round rod is ground down to its outer diameter (15, 16) with simultaneous grinding of the drill-bit back (13), and wherein in a third step the drill-bit front (4) is ground, and a drill bit (1) having at least one chip flute (12) and one secondary cutting edge and one drill-bit back (13) adjoining the secondary cutting edge, the drill-bit back (13) sloping downwards as the distance from the secondary cutting edge increases, in order to create a clearance that becomes continuously larger as the distance from the point of intersection (19) of the secondary cutting edge with the drill-bit back (13) increases.

Abstract translation: 一种用于制造钻头（1）的方法，其中在第一步骤中，所述切屑槽（12）被研磨成圆棒，在第二步骤中，所述圆杆被下降到其外径（15,16），同时 研磨钻头后部（13），并且其中在第三步骤中研磨钻头前面（4），并且钻头（1）具有至少一个切屑槽（12）和一个次切削刃，以及 与第二切削刃相邻的一个钻头后部（13），随着与次级切削刃的距离增加，钻头后部（13）向下倾斜，以便产生随着距离点的距离而变得连续更大的间隙 二次切削刃与钻头后端（13）的交叉点（19）增加。