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    • 3. 发明公开
    • 일정 부분이 파괴되는 암나사 절삭가공용 탭
    • 女螺丝切割带与所需部分断裂
    • KR1020000072416A
    • 2000-12-05
    • KR1020000051785
    • 2000-09-02
    • 주식회사 와이지-원
    • 조명재
    • B23G5/06
    • B23G5/064B23G1/16B23G2200/00
    • PURPOSE: A female screw cutting tap with desired portion being broken is used in cutting or plastic working of a female screw. The female screw cutting tap is provided to allow a desired portion of the tap to be broken in a desired shape at a desired section if the tap is broken during tapping and also to simply remove a piece of the tap broken and embedded in a hole by any suitable tool. CONSTITUTION: A female screw cutting tap with desired portion being broken comprises a contact section(77) for cutting a workpiece(99), a thread section(44) for guiding the contact section(77), a groove(55) for discharging chips produced at the contact section(77), a shank(11) for supporting the contact section(77) and the thread section(44), a square angled section(22a) for engaging the tap to a power source, wherein a section between the thread section(44) and the shank(11) is provided with a notch(33) with a desired depth to have a smaller outer diameter than that of the shank(11) and a square angled section(22b) like as the square angled section(22a) is formed on a portion in a direction from the notch(33) to the thread section(44). If torque reaches to a predetermined value, the notch(33) is broken. When the tap is broken and embedded in a hole of the workpiece(99), the broken tap is easily removed by engaging any suitable tool to the square angled section(22b).
    • 目的:在内螺纹的切割或塑性加工中使用内螺纹切割丝锥,其中所需部分断裂。 提供内螺纹切割龙头以允许在攻丝期间如果龙头断裂时,所需部分的所需部分被破碎成所需的形状,并且还简单地移除破碎并嵌入孔中的一个切屑 任何合适的工具。 构成:所需部分断裂的内螺纹切割龙头包括用于切割工件(99)的接触部分(77),用于引导接触部分(77)的螺纹部分(44),用于排出切屑的凹槽(55) 在所述接触部分(77)处产生,用于支撑所述接触部分(77)和所述螺纹部分(44)的柄部(11),用于将所述龙头接合到电源的方形角部分(22a),其中, 螺纹部分(44)和柄部(11)设置有具有期望深度的凹口(33),以具有比柄部(11)的外径更小的外径和如方形的正方形的部分(22b) 在从切口(33)到螺纹部(44)的方向的一部分上形成有倾斜部(22a)。 如果扭矩达到预定值,则凹口33被破坏。 当水龙头破裂并嵌入工件(99)的孔中时,通过将任何合适的工具接合到方形角部分(22b),可以容易地去除断裂的龙头。