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日本名古屋工业技术试验所切削研究室,用CBN 多晶刀具作了切削淬火钢的试验。切削条件为:V=100～350米/分,进给速度0.1毫米/转,切削深度0.5毫米,刀具几何形状为:安装角45°,前角-6°,刀尖半径0.8毫米,刀刃倒棱-15°×0.1毫米。图1为刀具寿命标准取后面磨损宽度V_B-0.2毫米时的刀具寿命示意图。当切削速度为200米/分时,寿命约30～40分,切削速度为100米/分时,寿命约2-4小时。在刀具后面磨损宽度V_B=0.1毫米时,切削加工面最大光洁度Rmax在5微米以内,刀具截面形状没有明显变化,因而可得到光滑的切削面,
Japan’s Nagoya Laboratory of Industrial Technology cutting laboratory, made with CBN polycrystalline cutting tool cutting hardened steel. Cutting conditions: V = 100-350 m / min, feed rate 0.1 mm / rev, depth of cut 0.5 mm, tool geometry: mounting angle 45 °, rake angle -6 °, tip radius 0.8 mm, Edge -15 ° × 0.1 mm. Figure 1 shows the life of the tool after taking the wear width V_B-0.2 mm tool life diagram. When the cutting speed of 200 m / min, the life of about 30 to 40 minutes, the cutting speed of 100 m / min, the life of about 2-4 hours. When the wear width V_B = 0.1 mm behind the tool, the maximum smoothness Rmax of the machined surface is within 5 microns and the cross-sectional shape of the tool does not change significantly, so that a smooth cutting surface can be obtained,