The Bending Vibration Analysis on The Main Drive Axis of CNC Spiral Bevel Gear Milling Machine

摘要

Gear machine tool main drive shaft to avoid resonance problem is studied. The force of the drive shaft is analyzed, and the vibration form of the drive shaft is confirmed. Using the lumped parameter method to simplify the main drive shaft, the lumped mass model and the force model were been obtained. When bending vibrating, the natural frequency of the main drive shaft is calculated using the transfer matrix method. The calculated critical speed is 43755 r/min, which far outweighs the motor rated speed. It means that the drive shaft under normal work won't be resonance, which accords with the request of production.