Abstract Polycrystalline cubic boron nitride (PcBN) is a highly wear resistant material. Due to its high hardness this material is typically machined with diamond grinding tools. The high hardness and high-temperature hardness of PcBN leads to a significant grinding tool wear. The applied cutting direction angle during face plunge grinding offers the possibility to influence the geometry of the contact area between the grinding tool and the PcBN workpiece. However, the underlying principal mechanisms and influences of parameters are not fully understood today. The contact zone geometry is described by the width of cut and the geometric contact length. The paper provides a mathematical description of these two parameters for S-shapes PcBN cutting inserts depending on the workpiece geometry and the cutting direction angle. It is shown that the contact length significantly determines the wear mechanism.

中文翻译：

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切向角对PcBN端面切入磨削刀具磨损行为的影响

摘要 多晶立方氮化硼（PcBN）是一种高耐磨材料。由于其高硬度，这种材料通常使用金刚石磨具进行加工。PcBN 的高硬度和高温硬度导致显着的磨具磨损。在端面切入磨削过程中应用的切削方向角提供了影响磨削工具和 PcBN 工件之间接触区域几何形状的可能性。然而，今天还没有完全了解参数的潜在主要机制和影响。接触区几何形状由切割宽度和几何接触长度描述。本文根据工件几何形状和切削方向角对 S 形 PcBN 切削刀片的这两个参数进行了数学描述。