Abstract
This paper applies micro textures to the rake face of PCBN (Polycrystalline Cubic Boron Nitride) tools, including three types of micro textures that are microgroove textures vertical to the cutting edge, microgroove textures parallel to the cutting edge, and microhole textures. In this paper, the effects of different cutting speeds on the surface quality of hardened bearing steel GCr15 by dry turning with non-texture PCBN tools and micro-texture PCBN tools are studied, and the surface roughness values obtained by different micro textures were compared and analyzed. The results showed that, compared to that of non-texture tools, the influence degree of the micro-texture tools on the machined surface roughness was different. The microhole texture and vertical microgroove texture were able to effectively reduce the surface roughness of the workpiece, and microhole texture had the best effective influence on surface roughness, but the parallel microgroove texture increased surface roughness. The influence of cutting speeds on surface roughness was different due to different types of micro textures. The influence of micro textures on surface roughness has huge potential for tool applications.
Highlights
Surface quality, as one of the most important indexes for measuring cutting performance, has always been the focus of cutting research
PCBN tools, tools, and parallel tools, and microhole were carried out respectively, the microgroove tools, and microhole were carried out respectively, and microgroove PCBN tools, and microhole PCBN tools) were carried out respectively, and the the surface roughness of the workpiece was measured with a WYKO N7910 optical profiler, all of which were compared to the test of normal PCBN tools
Figure shows that the workpiece surface was rougher at v m/min, parallel microgroove can be concluded thatthe the test surface roughness decreased the and the increase of cutting speed, whichIt was different from results of normal and with vertical surface microgroove quality atcutting vPCBN
Summary
As one of the most important indexes for measuring cutting performance, has always been the focus of cutting research. During turning of hardened steel with coated ceramic tool, the experimental results showed that the feed had the greatest influence on surface roughness, followed by the cutting speed, and the cutting depth had the least influence [13]. Krolczyk et al researched the surface morphology of duplex stainless steel using the method Power Spectral Density for dry and MQL/MQCL (Minimum Quantity Lubrication) turning process [15], Krolczyk concluded in the following study that the application of the MQCL method can lead to the reduction of 3D surface roughness parameters compared to values reached after dry machining, and surfaces machined with the use of the MQCL technique can be characterized by a high wear resistance [16]. In view of the current research status and research methods of surface roughness in literature, this paper uses the micro-texture method, that is, the micro dimension textures processing on the rake face of tools, and studies the influence of micro textures on the surface roughness of the workpiece
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
