Regenerative chatter vibrations of turning workpiece. 1st report. Two degrees of freedom and its stability criterion.

博, 太田; 英二, 近藤; 寿勝, 山田

doi:10.1299/kikaic.54.1953

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2010

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“…A two-dimensional (2D) analytical model is required to consider the effects accuratelywhere the relationship between dynamic displacement in the thrust direction and the dynamic principal force is formulated with the cross transfer function of the most flexible mechanical structure and the cutting force ratio of the thrust force to the principal force. Although a simple two-degree-of-freedom (2DOF) model for the stability analysis of plunge cutting has been proposed (2) , past studies have not focused on these effects.…”

Section: Introductionmentioning

confidence: 99%

Effect of Cross Transfer Function on Chatter Stability in Plunge Cutting

Suzuki

Nishimura

Shamoto

et al. 2010

JAMDSM

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An accurate analytical model for regenerative chatter vibration in plunge cutting is proposed. Effects of the cross transfer function and the cutting force ratio on chatter stability are considered in the proposed model. Equivalent transfer function is defined, which is useful to understand those effects on chatter stability. Basic plunge cutting experiments were conducted to verify the proposed model. Although the critical widths of cut in the CW and CCW rotation processes were significantly different from each other in the experiment, even when the other conditions were the same, chatter stability limits were predicted accurately by the proposed model as compared with the conventional model.

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Section: Introductionmentioning

confidence: 99%