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公开(公告)号：EP2859978A1
公开(公告)日：2015-04-15
申请号：EP12878634.0
申请日：2012-06-06
申请人： OSG Corporation
CPC分类号： B23G1/04 , B23B31/005 , B23B31/11 , B23B2260/1388 , B23G7/02 , B23G2200/02 , B23G2210/04 , B23G2225/28 , B23G2240/12
摘要： By screwing a threaded shaft (24) provided on a tip (14) into a threaded hole (26) provided on a body (12), the tip (14) is detachably installed on the body (12). Additionally, a restraining part (40) of the tip (14) is fitted into a restraining hole (38) provided in the body (12) and the body (12) and the tip (14) are positioned to be concentric with the shaft center (O). As a result, a separate installation screw is unnecessary and the tool is configured from two parts, the body (12) and the tip (14). Therefore, high centering precision is easily obtained. Additionally, the cross-sectional areas of the respective parts increase and strength increases, variation in tool life is limited, and excellent tool life can be stably obtained. Moreover, because the surface (24f) of the tip of the threaded shaft (24) is pressed to adhere closely to the bottom surface (26f) of the threaded hole (26) and the tip (14) is fixed to the body (12) to form a unit, a compressive stress acts on the threaded shaft (24) and the tip (14) can be fastened to the body (12) with a higher fastening strength than when a tensile stress is in operation.
摘要翻译： 通过将设置在尖端（14）上的螺纹轴（24）拧入设置在主体（12）上的螺纹孔（26）中，尖端（14）可拆卸地安装在主体（12）上。 此外，顶端（14）的限制部分（40）装配到设置在主体（12）中的限制孔（38）中，并且主体（12）和尖端（14）被定位成与轴同心 中心（O）。 结果，不需要单独的安装螺钉，并且工具由主体（12）和尖端（14）的两个部分构成。 因此，容易获得高定心精度。 此外，各部件的横截面积增加，强度增加，刀具寿命的变化受到限制，并且可以稳定地获得优异的刀具寿命。 此外，由于螺纹轴（24）的尖端的表面（24f）被按压以紧密地附着到螺纹孔（26）的底表面（26f），并且尖端（14）固定到主体（12） ）以形成单元时，压缩应力作用在螺纹轴（24）上，并且尖端（14）可以以比在拉伸应力运行时更高的紧固强度紧固到主体（12）。
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