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一、使用范围硬质合金铰刀适用于精度和光洁度要求高的孔加工,包括箱体孔和A级零件孔的铰削。鲛刀有加工铸件和加工钢件的两种,加工铸铁所用的硬质合金材料为G2、G3、G6;加工钢件所用硬质合金材料为T15、T30、T60。二、刀具几何角度、特点铰刀前角0～3°,后角6～8°,前锥角6～10°,圆棱0.15～0.25毫米,切削刃光洁度为▽▽▽▽10。详见附图。由于铰刀采用了两前锥切削刃,切削面积增大,可以一次精铰而达到2级精度,光洁度达到▽▽▽7～▽▽▽9。且刀具磨损减小,寿命延长。一般高速钢铰
First, the use of Carbide reamers for high precision and finish requirements of the hole machining, including box holes and A-level parts reaming hole. Trowels are two kinds of machined castings and machined steels, and the cemented carbide materials used for machining cast iron are G2, G3 and G6; the cemented carbide materials used for machining the steels are T15, T30 and T60. Second, the tool geometry point of view, reamer angle 0 ~ 3 °, rear angle 6 ~ 8 °, the front cone angle of 6 to 10 °, rounded edges 0.15 to 0.25 mm, cutting edge finish ▽ ▽ ▽ ▽ 10. See the attached drawings. As the reamer using two front taper cutting edge, cutting area increases, you can once precision hinge to achieve 2 precision, finish ▽ ▽ ▽ 7 ~ ▽ ▽ ▽ 9. And tool wear and reduce life expectancy. General high-speed steel hinge