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ABSTRACT
This research addresses the critical challenge of tool wear monitoring in AISI4140 steel hard turning through the innovative application of a Least Square-Support Vector Machine (LS-SVM) prediction model. While acknowledging the growing significance of hard turning over conventional grinding techniques, the background also recognizes the challenges posed by accelerated tool wear and decreased productivity. The main goal is to create a reliable tool wear prediction model that is tailored to harsh turning circumstances. Material selection, cutting force measurement, acceleration measurement, and accurate tool wear measurement are all included in the experimental procedures. Using time and frequency domain analyses, the research methodically examines how cutting force and acceleration affect tool wear. For feature selection, non-linear regression is used to determine which parameters have the greatest influence on wear. A comprehensive training and validation procedure, structural clarification, and a detailed mathematical foundation are used in the development of the LS-SVM-based tool wear prediction model. The presentation of the findings and related discussions explores the impact of acceleration and cutting force on wear. The LS-SVM model’s successful application for precise tool wear prediction in AISI4140 steel hard turning is highlighted in the conclusions, demonstrating the model’s potential to improve tool lifespan and manufacturing efficiency.
CO EDITOR-IN-CHIEF:
ASSOCIATE EDITOR:
Disclosure statement
No potential conflict of interest was reported by the author(s).
Nomenclature
| ap | = | Depth of cut (mm) |
| f | = | Feed rate (mm/rev) |
| Fx | = | Feed force (N) |
| Fy | = | Thrust force (N) |
| Fz | = | Tangential force (N) |
| HRC | = | Rockwell hardness |
| L | = | Machining Length (mm) |
| V | = | Cutting speed (m/min) |
| Vb | = | Tool wear (mm) |