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    • 42. 发明授权
    • Mountable chip breaker and flute cleaner for rotating twist drills
    • 可拆卸的切断器和旋转清洁器
    • US3689168A
    • 1972-09-05
    • US3689168D
    • 1971-12-30
    • HENRY PERSSON
    • PERSSON HENRY
    • B23B47/34B23Q11/00B23Q11/02B23B51/08
    • B23Q11/02B23B47/34B23Q11/005Y10T408/03Y10T408/46Y10T408/50Y10T408/98
    • A chip breaker and flute cleaner for twist drills is adapted for attachment to the worktable or column of a drill press or radial drill or the like. A base member carries an adjustable arm which carries a pair of block supports which is movable to a determined position in guides provided on the end of the arm. Each block support carries a rotatable disc of hardened steel which is disposed at an angle of about 45* to the axis of the drill. The arm and discs are positioned so that the discs are brought adjacent the drill with only a few thousandths of an inch clearance with the edge of the flutes of the drill and preferably at a point where the upwardly moving stringy chips tend to leave the flutes of the rotating drill. As the stringy chip is brought between the rotatable disc and cutting edge of the drill flute the chip is cut to ''''break'''' the chip into short lengths. A spray coolant applicator may be used in combination with the chip breaker and flute cleaner so that long stringy chips flow easily up the flutes to be broken between the discs and cutting edges of the flutes. The discs also act as a cleaner for the flute edges as they pass upwardly by the rotatable discs.
    • 用于麻花钻的断屑器和长槽清洁器适于附接到钻床或径向钻等的工作台或柱。 基座构件承载可调臂,其携带一对块支撑件,该支撑件可移动到设置在臂的端部上的导轨中的确定位置。 每个块支承件都带有一个可旋转的硬化钢盘,它与钻头的轴线成约45°的角度。 臂和盘被定位成使得盘与钻头相邻地仅与钻头的凹槽的边缘几千分之一英寸的间隙相邻,并且优选地在向上移动的弦状芯片倾向于离开钻头的凹槽的位置处 旋转钻。 由于将串联的芯片带入可旋转的盘和钻槽的切割刃之间,所以切屑将芯片“断开”成较短的长度。 喷雾冷却剂施加器可以与断屑槽和长槽清洁器组合使用,使得长条状的切屑容易地在凹槽之间流动以在盘和切槽的切割边缘之间断裂。 当碟形边缘通过可旋转盘向上传播时,盘也可用作清洁器。