The current experimental study is to investigate the effects of process parameters (cutting speed, feed rate and depth of cut) on performance characteristics (surface roughness, machining force and flank wear) in hard turning of AISI 4340 steel with multilayer CVD (TiN/TiCN/Al2O3) coated carbide insert. Combined effects of cutting parameter (v, f, d) on performance outputs (Ra, Fm and VB) ar...

This paper proposes an implementation of calibrated acoustic emission (AE) and vibration techniques to monitor progressive stages of flank wear on carbide tool tips. Three cutting conditions were used on workpiece material, type EN24T, in turning operation. The root-mean-square value of AE (AErms) and the coherence function between the acceleration signals at the tool tip in the tangential and ...

This paper presents some important, recently performed investigations on the laser texturing technology applied to PCD and PCBN cutting tools resulting process outputs including forces, tool wear indexes concerning both rake flank faces. It was documented that properly texturized faces results in a substantial reduction of elimination adhesion interaction between chip, abrasive diffusion wear. ...

Machining of titanium alloys is characterised by extremely rapid tool wear due to the high cutting temperature and the strong adhesion at the tool-chip and tool-workpiece interface, caused by the low thermal conductivity and high chemical reactivity of Ti alloys. With the aim to monitor the tool conditions during dry turning of Ti-6Al-4V alloy, a machine learning procedure based on the acquisit...

The aim of this study is the modelling and analysis of tool wear on cryogenically treated CNMG120408SMRH13A inserts. Cryogenic treatment is carried out at -196°C for 48 hours, followed by tempering at 200°C for 2 hours. The AISI4340 steel is machined with cryogenically treated inserts by the turning process. Parameters, namely cutting speed, feed rate, and depth of cut, are selected as the inpu...

A thin-walled spherical shell made of pure iron material is a key part precision physical experiments. Tool wear characteristics freeform surface parts are significantly different from those single-point turning due to the movement contact point between tool and workpiece, which affects form accuracy integrity workpiece. However, there lack comprehensive understanding in machining materials. Th...

The friction contact boundary between the tool flank of milling cutter and machining transition surface is important indicator to reveal third deformation zone relationship assessing frictional wear performance cutter. existing models for identification pay attention maximum width accumulated on flank, ignoring variability overall local morphology flank. Aimed at influence vibration instantaneo...

Abstract This paper concerns the tool wear in hard turning of AISI 52100 hardened steel by means PCBN tools. The purposes this work are development a model and its implementation FEM-based procedure for predicting crater flank progression during machining operations studying influence on process terms geometry modifications stress variation tool. developed model, able to update worn as function...