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    • 4. 发明授权
    • Grinding machine for drill bits
    • 钻头磨床
    • US4848036A
    • 1989-07-18
    • US131555
    • 1987-12-11
    • Eijiro Kiso
    • Eijiro Kiso
    • B24B3/26B24B3/28
    • B24B3/28
    • A grinding machine for grinding a tip of a drill bit including a grindstone rotatably provided on a base; a drill bit holder provided on one side of the grindstone, the drill bit holder being pivotable about an axis parallel to the rotating axis of the grindstone and holding the drill bit in an inclined position at a predetermined angle relative to the grinding surface of the grindstone; and a drill bit feeder which moves the drill bit toward the grindstone so that the tip of the drill bit is brought into contact with the grinding surface and ground by the grindstone. If the drill bit holder is pivoted when the tip of the drill bit is brought into contact with the rotating grindstone, the drill bit held by a drill bit presser mounted on the drill bit holder is turned about its own axis so that the tip is ground into substantially a cone shape with a desirable rake angle and rake angle surface.
    • 一种用于研磨包括可旋转地设置在基座上的砂轮的钻头的研磨机, 设置在磨石一侧的钻头保持器,所述钻头保持器可绕平行于磨石旋转轴线的轴线枢转,并将钻头相对于磨石的研磨表面以预定角度保持在倾斜位置 ; 以及钻头进给器,其将钻头朝向磨石移动,使得钻头的尖端与研磨表面接触并由磨石磨碎。 如果当钻头的尖端与旋转的磨石接触时钻头夹持器枢转,则安装在钻头夹持器上的由钻头压头保持的钻头围绕其自身的轴线转动,使得尖端被磨削 变成基本上具有期望的前角和前角表面的锥形。
    • 5. 发明授权
    • Grinding device
    • 研磨装置
    • US4744178A
    • 1988-05-17
    • US911326
    • 1986-09-25
    • Mohammad Afshar
    • Mohammad Afshar
    • B24B3/28B24B19/00
    • B24B3/28
    • A hand held grinding device for sharpening drill bits comprises a pair of bearing members which rotatably support a grinding wheel fast on a shaft. Portion of the shaft is engagable with the chuck of a drill. A guide plate with grooves for various size ranges of drill bits is hingedly connected to the bearing members by a plastics hinge. The grooves direct the drill bit to the grinding wheel at an angle of 59.degree.. By pivoting the guide plate relative to the bearing members, the trailing portion of the cutting edge of the drill bit is relieved.
    • 用于磨削钻头的手持磨削装置包括一对轴承构件,其可快速地旋转地支撑砂轮在轴上。 轴的部分可与钻头的卡盘接合。 具有用于各种尺寸范围的钻头的凹槽的引导板通过塑料铰链铰接地连接到轴承构件。 凹槽以59度的角度将钻头引导到砂轮。 通过使引导板相对于轴承部件转动,钻头的切削刃的尾部被释放。