タップ加工用知能化工作機械システムに関する研究(第3報) : リアルタイム適応制御による難削材加工中の工具の折損防止と異常監視

概要

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This paper presents a method of real-time adaptive control of tapping for the difficult-to-machine material such as superheat resistant alloy (Inconel718), titanium alloy (Ti-6Al-4V) and stainless steel (SUS 304). Normally adaptive control has disadvantage to be applied in tapping process because C-axis requires high acceleration in the process. In general, conservative cutting speed is applied to such difficult-to-machine materials, since high cutting speed intensify tool wear. Moreover, only in the case with low cutting speed, C-axis is able to be operated with high acceleration to stop its rotation. Therefore, real-time adaptive control such as adaptive pecking is effective for these materials. By introducing adaptive control, chip jamming is avoided during tapping process. In addition, it is possible to predict the tool life by counting number of pecking in successive tapping process.
公益社団法人精密工学会の論文
2002-09-05