エンドミル加工におけるびびり振動の解析と抑制(第1報) : 時間領域切削シミュレーションによる不等ピッチエンドミルのびびり振動解析

概要

論文の詳細を見る
Chatter vibration for irregular tooth pitch end mill has been simulated using time domain cutting simulation based on the regenerative force and dynamic deflection model. The time domain cutting simulation program assumes that the vibration of end mill can bc represented by using a lumped-parameter model with two degrees-of-freedom. Furthennore, it treats realistic nonlinearities accounting for the variation of uncut chip thickness, the changing of cutung force direction. In order to get a stability lobe diagram, the results of many time domain cutting simulations are evaluated by the average acceleration of the tool vibration during one rotation. Predicted stability lobcs are compared with the results of cutting experiments, and they show that an irregular tooth pitch end mill can lead to an increase of stability, It is difficult to accomplish the quantitative agreement because of the assumptions in the modeling such as the constraint of tool motion and the treatment of process damping. But, the time domain cutting simulation can give the information to find an optimum cutting condition and a chatter free tool confirguration.
公益社団法人精密工学会の論文
1998-03-05