The Error Analysis on Tooth Profiles with Electroplated CBN Hard Gear-Honing-Tools

Liu, Ming; Zhang, Man Dong; Xiong, Chen Xi

doi:10.4028/www.scientific.net/kem.407-409.73

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“…In order to keep the surface of the honing wheel with sufficient sharpness and correct geometry during the honing process, it must be regularly dressed [3]. As a superhard material with excellent thermal and chemical stability, cubic boron nitride (CBN) grain is widely used in the grinding and honing of gears [4][5][6]. The existing research on dressing of CBN grain mainly focused on grinding, and the research on the dressing of honing wheel in gear honing process is seldom reported.…”

Section: Introductionmentioning

confidence: 99%

Peridynamic Simulation to Fracture Mechanism of CBN Grain in the Honing Wheel Dressing Process

et al. 2021

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Regularly dressing of CBN honing wheel is an effective way to keep its sharpness and correct geometry during honing process. This study aims to understand the fracture mechanism of single CBN grain in the dressing process of honing wheel. The honing wheel dressing process was simplified into the dressing process of grinding wheel, and the bond-based Peridynamic method considering bond rotation effect was developed to investigate the progressive fracture evolution, stress characteristics, and fracture modes of CBN grains in this process. It was found that fracture evolution of CBN grains mainly underwent four stages: elastic deformation, damage initiation, crack formation, and macro fracture. In addition, the fracture initiation and propagation were mainly determined by the tensile and shear stress, where the former led to mode I fractures and the latter led to mode II fractures. The propagation of mode I fractures was stable while the propagation of mode II fracture was unstable. The results show that the Peridynamic approach has great potential to predict the fracture mechanism of CBN grain in the dressing process of honing and grinding wheels.

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Section: Introductionmentioning

confidence: 99%