The invention provides an online active type
cutting chatter restraining
system and method for an intelligent milling motorized spindle. The online active type
cutting chatter restraining
system for the intelligent milling motorized spindle comprises a sensing portion, a controller and a chatter restraining adjustment and control device, wherein the sensing portion, the controller and the chatter restraining adjustment and control device are sequentially connected. The sensing portion comprises a non-
contact type eddy current displacement sensor and a
signal collector, wherein the non-
contact type eddy current displacement sensor is installed at the front end of the spindle and used for measuring the
axial displacement of the spindle, and the
signal collector is used for collecting displacement signals of the non-
contact type eddy current displacement sensor and converting the displacement signals to acceleration signals. The controller is used for outputting
voltage control signals to the chatter restraining adjustment and control device according to the acceleration signals output by the
signal collector. The chatter restraining adjustment and control device comprises a power
amplifier and an active type electromagnetic bearing. The active type electromagnetic bearing comprises a rotor core and a
stator core, wherein the rotor core is installed at the front end of the spindle, and a
copper coil is wound around the
stator core. The power
amplifier is used for converting the received
voltage signals into current control signals. The output end of the power
amplifier is connected with the
copper coil. The online active type
cutting chatter restraining method for the intelligent milling motorized spindle comprises the steps of identifying and restraining chatter in the
machining process.