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问题的提出高硬高强度零件的车削加工,一直是金属切削研究的课题之一。按照常规工艺路线,被加工材料硬度在HRC35～45时,需选择红硬性较高,耐磨性较好,采用负前角为γ=-5°～-10°的硬质合金车刀,进行强力车削加工。但这种加工方法的缺点是:车刀容易崩刃和零件有形状误差,主要是平面度、直线度及圆柱度误差,光洁度也很难达到(?)6。如果被加工材料硬度在HRC50以上,则不能采用车削,而要用磨削、研磨、珩磨等工艺,这样加工效率将受到一定限制。
The question raised High hardness and strength of the parts turning, metal cutting has been one of the topics. According to the conventional process route, when the hardness of the material to be machined is HRC 35-45, the red hardness is to be selected and the wear resistance is better, and the cemented carbide turning tool with the negative rake angle γ = -5 ° -10 ° is selected Strong turning. However, the disadvantages of this machining method are: the turning tool is easy to collapse and the parts have shape errors, mainly the flatness, straightness and cylindricity error, and the finish is difficult to achieve (?) 6. If the processed material hardness HRC50 or more, you can not use turning, but to use grinding, grinding, honing and other processes, so the processing efficiency will be subject to certain restrictions.