CHATTER VIBRATION SUPPRESSION SYSTEM AND SUPPRESSION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a chatter vibration suppression system and suppression method capable of establishing a mathematical model for self-excited chatter vibrations including mode-coupling as well as regenerative chatter vibrations, and suppressing the two types of self-excited chatter vibrations.;SOLUTION: A chatter vibration suppression system includes a detection means for detecting the chatter vibration frequency (ω), and a computation means for computing a first estimated natural frequency (ω_n1) by a first set (S₁, ω₁) and a second estimated natural frequency (ω_n2) by a second set (S₂, ω₂) (S1, S2: spindle speed; ω₁, ω₂: chatter vibration frequency). The system identifies a phase shift amount (φ) at which the two estimated natural frequencies (ω_n1) (ω_n2) conform to each other, and derives a stable critical depth of cut and the spindle speed corresponding thereto based on the phase shift amount (φ) and the mathematical model.;COPYRIGHT: (C)2014,JPO&INPIT