Cutting parameters optimization for surface roughness during dry hard turning of EN 31 bearing steel using CBN insert
| Autor: | V.R. Raju, M.S. Karthik, K. Niranjan Reddy, N. Balashanmugam, Mamilla Ravi Sankar |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Insert (composites) Materials science Bearing (mechanical) Cutting tool Mechanical engineering 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences law.invention Taguchi methods chemistry.chemical_compound Machining chemistry law Boron nitride 0103 physical sciences Surface roughness Orthogonal array 0210 nano-technology |
| Zdroj: | Materials Today: Proceedings. 26:1119-1125 |
| ISSN: | 2214-7853 |
| Popis: | Hard turning has evolved as an economical process for machining of hardened parts compared to cylindrical grinding process. The surface roughness, dimensional and geometrical accuracies achieved by hard-turning process are similar to those achieved by grinding process. Cubic boron nitride (CBN) is generally used as cutting tool in hard turning. Bearing bush is used on feed rollers end shafts upon which bearings which are used in super finishing machines in bearing industries. These bearing bushes are manufactured using very hard material of hardness 60 HRC which requires very high surface finish and accuracy. Surface roughness plays vital role in bearing applications and hard turning can be used to achieve the required high surface finish and maintain close tolerances and accuracies. In this present work, experiments were conducted on hardened EN31 steel using Hardinge hard turning machine using CBN tools under dry conditions to study the effect of cutting parameters on surface roughness and to obtain optimum cutting parameters for minimizing surface roughness by using Taguchi L9 Orthogonal array method and ANOVA. The minimum surface roughness achieved for optimum conditions was 0.1492 µm, it was compared with ground bearing bush and found that the hard turned bearing bush has better surface roughness than ground bearing bush. |
| Databáze: | OpenAIRE |
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