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    • 31. 发明申请
    • METHOD OF MANUFACTURING MEMBER HAVING CLOSED-BOTTOM HOLE PORTION, AND WORKING TOOL
    • 制造封闭底盖部件的成员及其工具的制造方法
    • US20120297601A1
    • 2012-11-29
    • US13576545
    • 2011-01-31
    • Toshiaki Takahashi
    • Toshiaki Takahashi
    • B23D61/00
    • B23B51/0413B23D61/18Y10T29/49794
    • A method of manufacturing a member having a closed-bottom hole portion by inside-removing-working a raw material made of a carbonaceous material, the closed-bottom hole portion having a hollowed-out side portion and a hollowed-out bottom portion formed by hollowing out an inner portion of the raw material, including: a step of forming a cylindrical trench by digging the raw material frontward from a near-side end face of raw material while rotating the raw material, to form the hollowed-out side portion; and a step of forming the hollowed-out bottom portion by supporting a cutting wire inserted into a bottom portion of the cylindrical trench at two points while rotating the raw material, and pressing the cutting wire being supported at the two points in a direction approaching an axis line of the raw material.
    • 一种通过对由碳质材料制成的原料进行内部去除加工而制造具有封闭底部孔部件的方法,所述封闭底部孔部分具有中空侧部分和中空的底部部分,该底部部分由 对原料的内部进行挖空,其特征在于,包括:在旋转所述原料的同时,从原材料的近侧端面向前方挖掘原料而形成圆筒状沟槽的工序,形成中空侧部分; 以及通过在旋转所述原料的同时在两点支撑插入所述圆筒形沟槽的底部的切割线来形成所述中空的底部的步骤,并且将所述切割丝按压在所述两点处接近的方向 轴线的原料。