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41 条记录 (耗时 0.012 秒)

    Method for continuously grinding a drill tip end into a normal shape and into a split point
    1.
    发明授权
    Method for continuously grinding a drill tip end into a normal shape and into a split point 失效
    将钻头连续研磨成正常形状并分成点的方法

    公开(公告)号：US3579924A

    公开(公告)日：1971-05-25

    申请号：US3579924D

    申请日：1968-04-16

    申请人： MATAICHI SAITO

    发明人： SAITO MATAICHI

    IPC分类号： B24B3/30 ,  B24B3/32 ,  B24B3/24

    CPC分类号： B24B3/32 ,  B24B3/30

    摘要： The specification discloses a novel method for continuously grinding a drill tip end into a normal shape and into a split point form, without removing and replacing the drill between the normal shape grinding procedure and the split point grinding procedure. A drill to be ground is first ground at its tip end portion into a normal shape, and subsequently but continuously to the preceding procedure the drill tip end is ground into a split point, whereby the drill can be ground in two ways in a single step of process. This means a great advantage over the prior art in speed of the processing and quality of the resultant product.

    Twist drill point splitting/web thinning apparatus
    6.
    发明授权
    Twist drill point splitting/web thinning apparatus 失效
    旋转钻头分割/卷材变薄装置

    公开(公告)号：US4485596A

    公开(公告)日：1984-12-04

    申请号：US416281

    申请日：1982-09-09

    申请人： David A. Bernard ,  Richard A. Bernard ,  William C. Christian

    发明人： David A. Bernard ,  Richard A. Bernard ,  William C. Christian

    IPC分类号： B24B3/32 ,  B24B19/00

    CPC分类号： B24B3/32

    摘要： A fluted twist drill point splitting/web thinning apparatus is disclosed which permits simple point splitting/web thinning of conventional sharpened twist drills. The apparatus is uniquely designed such that either of the two operations, that is point splitting or web thinning, can be simply and accurately carried out with the same assembly. The apparatus also includes the provisions of a grinding wheel dressing diamond mounted on a forward face of the apparatus.

    摘要翻译： 公开了一种带槽的麻花钻分割/卷材变薄装置，其允许常规的锐化麻花钻的简单的点分割/卷材变薄。 该设备是独特设计的，使得可以使用相同的组件简单且准确地执行两个操作中的任一个，即分割或卷材变薄。 该设备还包括安装在设备前面的砂轮修整金刚石的设置。

    Twist drilis
    7.
    发明授权
    Twist drilis 失效
    TWIST DRILIS

    公开(公告)号：US3564947A

    公开(公告)日：1971-02-23

    申请号：US3564947D

    申请日：1968-05-17

    申请人： KARL STEPHAN MAIER

    发明人： MAIER KARL STEPHAN

    IPC分类号： B23B51/02 ,  B24B3/32

    CPC分类号： B24B3/32 ,  B23B51/02 ,  B23B2251/18 ,  Y10T408/899 ,  Y10T408/909 ,  Y10T408/9097

    摘要： A TWIST DRILL PROVIDING A GOOD CENTERING ACTION AND COMPRISING AT LEAST TWO CUTTING LIPS WHICH ARE CONNECTED TOGETHER BY CENTERING LIPS, IN WHICH THE CUTTING LIPS ARE FOLLOWED, IN THE DIRECTION OF ROTATION OF THE DRILL, BY A MAIN LAND OF THE DRILL AND BY A FURTHER GROUND SURFACE OF GREATER RAKE THAN THE MAIN LAND. EACH CENTERING LIP DIVIDING THE MAIN LAND FOLLOWING THE OPPOSITE CUTTING THE FURTHER GROUND SURFACE FOLLOWING THE OPPOSITE CUTTING LIP, AND EACH CENTERING LIP BEING UNDERCUT BY THE RESPECTIVE FURTHER GROUND SURFACE WHICH IT MEETS AND THUS BEING PROVIDED WITH A POSITIVE CUTTING ANGLE.