Research on grinding performance and wheel wear of titanium alloy arc-shaped mortise profile grinding wheels

The arc-shaped mortise is an important form of the mortise on the disk of future aero engines and is of great significance for improving the performance of aero engines. This paper employs a forming electroplated CBN grinding wheel to grind TC11 titanium alloy mortise. Firstly, the influence of process parameters on grinding force and surface quality was explored. Then, the influence of wheel wear on the machining process is explored simultaneously. The results indicate that abrasive fracture and wheel adhesion are common wear forms of the wheel. The grinding forces in the three directions show a continuous upward trend with the increase of wheel wear. Compared with the initial and severe wear stage, The grinding forces in the three directions (x, y, and z) in the normal wear stage is reduced by 125.4%, 32.4%, 10.7% and 17.3%, 31.9%, 83.6% respectively. Furthermore, compared with the initial wear and severe wear stages, the surface roughness values in the normal wear stage decreased by 37.9% and 31.25% respectively, and the surface in the normal wear stage is also smoother.