Method of forming a drill bit with debris conveying flute
    1.
    发明授权
    Method of forming a drill bit with debris conveying flute 失效
    用碎屑输送长笛形成钻头的方法

    公开(公告)号:US5690003A

    公开(公告)日:1997-11-25

    申请号:US662543

    申请日:1996-06-13

    摘要: A cutting tool or drill bit (10) has a shank (12) with two ends. A chucking end (14) is on one end of the shank (12) and a cutting end (16) is on the other end of the shank (12). At least one flute (30) is formed on the shank (12) between the chucking (14) and cutting ends (16). The flute (30) includes a web (36) and a debris channel (32). The web (36) includes a first (38) and second (40) surface continuous with a debris channel side wall (34). The first surface (38) is substantially parallel to the shank longitudinal axis (18) and the second surface (40) is on an angle from about 100.degree. to about 120.degree. with respect to the shank longitudinal axis (18). The second surface forms the base of the debris channel or groove (32) with the debris channel side wall (34). The debris channel side wall (34) is on an angle from about 10.degree. to about 20.degree. with respect to the shank longitudinal axis (18). A ratio exists between the axial length of the first surface to the axial length of debris channel surface of about 2:1 to about 4:1. Also disclosed is a method of cold rolling a blank (60) to form the above drill bit (10).

    摘要翻译: 切割工具或钻头(10)具有带有两端的杆(12)。 夹持端(14)位于柄(12)的一端,切割端(16)位于柄(12)的另一端。 在夹头(14)和切割端(16)之间的柄部(12)上形成至少一个凹槽(30)。 凹槽(30)包括网(36)和碎片通道(32)。 腹板(36)包括与碎屑通道侧壁(34)连续的第一(38)和第二(40)表面。 第一表面(38)基本上平行于柄纵向轴线(18),并且第二表面(40)相对于柄纵向轴线(18)为大约100°至大约120°的角度。 第二表面与碎屑通道侧壁(34)形成碎屑通道或凹槽(32)的基部。 碎片通道侧壁(34)相对于柄纵轴线(18)为大约10°至大约20°的角度。 在第一表面的轴向长度与碎片通道表面的轴向长度之间存在约2:1至约4:1的比率。 还公开了冷轧坯料(60)以形成上述钻头(10)的方法。

    Drill bit with debris conveying flute
    2.
    发明授权
    Drill bit with debris conveying flute 失效
    钻头用碎屑输送长笛

    公开(公告)号:US5641028A

    公开(公告)日:1997-06-24

    申请号:US513372

    申请日:1995-08-10

    摘要: A cutting tool or drill bit (10) has a shank (12) with two ends. A chucking end (14) is on one end of the shank (12) and a cutting end (16) is on the other end of the shank (12). At least one flute (30) is formed on the shank (12) between the chucking (14) and cutting ends (16). The flute (30) includes a web (36) and a debris channel (32). The web (36) includes a first (38) and second (40) surface continuous with a debris channel side wall (34). The first surface (38) is substantially parallel to the shank longitudinal axis (18) and the second surface (40) is on an angle from about 100.degree. to about 120.degree. with respect to the shank longitudinal axis (18). The second surface forms the base of the debris channel or groove (32) with the debris channel side wall (34). The debris channel side wall (34) is on an angle from about 10.degree. to about 20.degree. with respect to the shank longitudinal axis (18). A ratio exists between the axial length of the first surface to the axial length of debris channel surface of about 2:1 to about 4:1. Also disclosed is a method of cold rolling a blank (60) to form the above drill bit (10).

    摘要翻译: 切割工具或钻头(10)具有带有两端的杆(12)。 夹持端(14)位于柄(12)的一端,切割端(16)位于柄部(12)的另一端。 在夹头(14)和切割端(16)之间的柄部(12)上形成至少一个凹槽(30)。 凹槽(30)包括网(36)和碎片通道(32)。 腹板(36)包括与碎屑通道侧壁(34)连续的第一(38)和第二(40)表面。 第一表面(38)基本上平行于柄纵向轴线(18),并且第二表面(40)相对于柄纵向轴线(18)为大约100°至大约120°的角度。 第二表面与碎屑通道侧壁(34)形成碎屑通道或凹槽(32)的基部。 碎片通道侧壁(34)相对于柄纵轴线(18)为大约10°至大约20°的角度。 在第一表面的轴向长度与碎片通道表面的轴向长度之间存在约2:1至约4:1的比率。 还公开了冷轧坯料(60)以形成上述钻头(10)的方法。