Tool Wear Monitoring System in Milling Operation.

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  • エンドミル加工における工具逃げ面摩耗監視システム
  • エンドミル カコウ ニ オケル コウグ ニゲ メン マモウ カンシ システム

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Abstract

This paper presents tool wear monitoring in milling process with laser measuring instrument. Flank wear on side cutting edge is monitored by the change of cutter diameter; and that of end cutting edge is monitored by the change of cutter length. Laser measuring instrument measures cutter diameter and height of end edge which rotates during air cutting time. The presented approach which measures edge shape directly is independent of cutting conditions and workpiece shape. The accuracy of tool wear monitoring is verified with the effect of extraneous objects and thermal expansion and that of cutter revolution. The approach can not monitor tool wear all the cutting process and has time loss for measuring. Sequential prediction of tool wear and sequential determination of monitoring interval are discussed to apply the monitoring approach to practical use.

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