Multi-optimization of dressing parameters in external cylindrical grinding for 90CrSi tool steel using Taguchi method and Grey relation analysis
Keywords:
External cylindrical grinding, Dressing condition, Taguchi method, Grey relation analysisAbstract
This study aims to optimize the dressing parameters of grinding wheel in external cylindrical grinding for 90CrSi tool steel to minimize surface roughness and maximize tool life using Taguchi method and Gray Relation Analysis (GRA). An orthogonal array L16 (4^4x2^2) was applied to investigate six dressing parameters. Taguchi method and GRA are combined to solve multi-objective optimization problem and determine optimal dressing parameters. The study results shows that optimal dressing parameters to obtain minimum surface roughness and the maximum tool life are coarse dressing depth of 0.025 mm, coarse dressing times of 2 times, fine dressing depth of 0.005 mm, fine dressing times of 2 times, non-feeding dressing times of 3 times and dressing feed rate of 1.8 m/min. Base on the set of optimal dressing parameters, the predictive results of each respond are calculated and the experimental research model is tested by Anderson-Darling method indicated the results are satisfy practical requirements.
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