Evaluation and Prediction of Wrapping Deformation in Sheet Part Grinding

Abstract

Grinding is usually adopted as the final step in the workpiece machining to improve the surface quality. The wrapping deformation of sheet parts caused by grinding directly affects the surface accuracy and the performance of the parts. In this paper, the grinding experiments were designed and conducted under different conditions. Combined with theoretical analysis, the finite element model was established to reveal the mechanism of wrapping deformation. A new evaluation method of wrapping deformation in grinding was proposed, and the prediction model of the wrapping deformation and temperature in the grinding zone were established and verified. Finally, the grinding parameters were optimized through genetic algorithm with small error. The optimized grinding parameters were v_s = 28 m/s, a_p = 5 μm, v_w = 3 m/min. This method can provide guidance for the grinding process of sheet parts, which is beneficial for improving efficiency and precision in grinding.