Precision cutting of ferreous metals with single crystal CBN cutting tools.
Precision cutting of ferreous metals with single crystal CBN cutting tools.
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使用单晶 CBN 刀具精密切割黑色金属。
DOI：
10.2493/jjspe.54.384
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发表时间：
1988
影响因子：
--
通讯作者：
M. Masuda
中科院分区：
文献类型：
--
作者：
T. Nishiguchi;M. Masuda
本文对CBN刀具镜面切削黑色金属进行了实验探讨。为了达到镜面切削的目的，开发了单晶CBN切削刀具。对单晶立方氮化硼进行磨损试验，以确定后刀面的最佳晶体取向。 (111)面方向的耐磨性最大，因此单晶CBN刀具选择(111)面作为后刀面，(111)面方向作为后刀面切削方向。使用工作表面粗糙度保持在1μmRmax以内的精细金刚石砂轮可以获得0.005-0.008μmRmax的抛光后刀面粗糙度。使用这种单晶 CBN 切削刀具，硬化不锈钢 (HRC 52) 的加工表面粗糙度已达到小于 0.05 μmRmax。尽管单晶 CBN 刀具的刀具寿命不够（约 200 m 切削长度），但使用新刀具预计将大幅缩短硬化不锈钢模具的抛光时间。
Mirror-like cutting of ferreous metals with CBN cutting tools is discussed experimentally in this paper. For the purpose of the mirror-like cutting, single crystal CBN cutting tools are developed. The wearing test of the single crystal CBN is carried out to ascertain the optimum crystallographic orientation of flank surface. The wear resistance in direction on (111) plane is the largest, so the (111) plane is chosen as the flank surface for single crystal CBN tools, and direction on (111) plane as the cutting direction on the flank surface. The polished flank surface roughness of 0.005-0.008 μmRmax can be obtained using fine diamond grinding wheel whose working surface roughness is kept within 1 μmRmax. Using this single crystal CBN cutting tool, machined surface roughness of less than 0.05 μmRmax has been achieved for hardened stainless steel (HRC 52). Although the tool lives in single crystal CBN tools have not been sufficient (about 200 m cutting length), the use of the new tools expected in a drastic reduction of the polishing time for the hardened stainless steel mold dies.