Abstract
Chatter stability analysis has been mainly studied under the constant cutting depth conditions. It is insufficient for milling complex shape including die and mold. The paper presents NC milling simulation of chatter stability for complex shape with arbitrary cutting depth conditions. It calculates quantitative indicator of chatter stability for each tool path, visualizes it, and modifies NC programs to avoid chatter vibrations. The simulation results are in good agreement with the machined surface in pocket milling and chatter vibrations are avoided.
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