Several Key Measures To Improve Grinding NVH

1. Optimization of Grinding Process Parameters and Force Fluctuation Control: By adjusting the process parameters of continuous grinding (such as feed rate and cutting depth), reduce the tooth surface ripples caused by periodic cutting force fluctuations, especially in gears with fewer teeth. The ripple wavelength is related to the normal base pitch, which can easily cause noise at the meshing stage. Sandwheel Dressing Strategy: Optimize the dressing parameters (such as dressing overlap rate and dressing speed) to prevent periodic defects on the sandwheel surface from being transmitted to the tooth surface, thereby reducing high-frequency vibration excitation.

2.Low Noise Shifting Technology (LNS): Surface Structure Optimization: Use low noise shifting technology to break long grinding marks into comma-like structures through special shifting strategies, forming a dispersed surface texture that reduces acoustic excitation at a single frequency.

3.Process-Induced Twist Control: Through simulation analysis of grinding thermal deformation and residual stress, optimize cooling strategies and clamping schemes to reduce the impact of tooth twisting on meshing smoothness.

4. External Excitation Source Suppression: Equipment Vibration Management: Identify and eliminate external excitations of the grinding machine (such as poor dynamic balance of the grinding wheel, damage to the spindle bearing, and defects in the synchronous belt drive) to prevent vibrations from being transmitted to the workpiece, causing periodic ripples on the tooth surface. Peripheral Equipment Isolation: Isolate the vibration interference from auxiliary equipment such as pumps and filters to ensure the stability of the process system.