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为了研究刀具表面织构对切削性能的影响,通过控制前刀面上微凹坑的直径、深度和面积占有率等参数制备了两组表面高度算术平均值Sa相同的织构刀具.使用Talysurf CCI Lite非接触式三维光学轮廓仪对织构表面进行测量,采用ISO25178参数对测量表面进行表征;通过SL200KS接触角测量仪测量织构刀具前刀面湿润性的变化;随后在CA6140车床上进行45钢切削试验,研究不同织构对切削力、前刀面摩擦特性、工件表面粗糙度和切屑形变的影响.结果表明:合理的表面织构能够改善刀具的切削性能;切削液在前刀面铺展较快的织构刀具获得了较好的切削性能;凹坑直径、深度和面积占有率的协同作用对改善刀具切削性能至关重要,为了协调这三个织构参数,进一步研究三维表征参数Sku、Ssk、Sv、Vvv、Vvc、Sdv、Sda、Spd与刀具切削性能的关联性,为刀具表面设计提供了基础.
In order to study the effect of the tool surface texture on the cutting performance, two sets of textured knives with the same surface height arithmetic mean Sa were prepared by controlling the parameters such as the diameter, depth and area occupancy of the micro-pits on the rake face.The Talysurf CCI Lite non-contact three-dimensional optical profiler to measure the textured surface, using ISO25178 parameters of the measurement surface characterization; SL200KS contact angle measuring instrument to measure the wettability of the cutting tool surface wettability changes; then CA6140 lathe 45 Cutting test to study the effect of different texture on cutting force, rake friction, workpiece surface roughness and chip deformation.The results show that: reasonable surface texture can improve the cutting performance of cutting tools; In order to coordinate the three texture parameters, we further studied the three-dimensional characterization parameters Sku, The relevance of Ssk, Sv, Vvv, Vvc, Sdv, Sda, Spd and tool cutting performance provides the basis for tool surface design.