论文信息 - Estimation of tool wear of a gun drill using the signal curve pattern of feed force

Estimation of tool wear of a gun drill using the signal curve pattern of feed force

This study concentrates on gundrilling and the related feed force signal in time domain, and possibilities of using this signal in drill wear monitoring. The behavior of the feed force was studied in a normal gundrilling procedure, and also in a situation where the feed was stopped just before guidance feed was replaced by actual drilling feed. Stopping the feed caused a new kind of behavior in the pattern of the feed force curve, which could be used in monitoring the extent of drill wear. Regression models were created in order to estimate the mean flank wear in the cutting edges, flank wear in the drill tip, and longitudinal wear based on the pattern of the feed force curve when cutting conditions remain constant. Based on the test results, it was concluded that from the pattern of the feed force curve monitored in time domain and modified by stopping the feed, it is possible to predict the extent of the wear of the gun drill.

J. Varis | I. Sihvo | J. Varis | I. Sihvo

[1] B.K.N. Rao,et al. Handbook of Condition Monitoring , 1996 .

[2] Adam G. Rehorn,et al. State-of-the-art methods and results in tool condition monitoring: a review , 2005 .

[3] K. Subramanian,et al. Sensing of Drill Wear and Prediction of Drill Life , 1977 .

[4] S. Lin,et al. TOOL WEAR MONITORING IN DRILLING USING FORCE SIGNALS , 1995 .

[5] Ranga Komanduri,et al. Frequency and time domain analyses of sensor signals in drilling. I: Correlation with drill wear , 1995 .

[6] Erkki Jantunen,et al. A summary of methods applied to tool condition monitoring in drilling , 2002 .

[7] K. Ramamurthi,et al. Intelligent Real-Time Predictive Diagnostics for Cutting Tools and Supervisory Control of Machining Operations , 1993 .

[8] I. Sihvo,et al. The wear of single flute gun drill and tool life tests , 2008 .

[9] T. I. Liu,et al. On-Line Detection of Drill Wear , 1990 .

[10] T. I. Liu,et al. Intelligent Classification and Measurement of Drill Wear , 1994 .

[11] J. D. Maiden,et al. Real time process monitoring and adaptive control during CNC deep hole drilling , 1990 .

[12] J. Varis,et al. TOOL CONDITION MONITORING IN GUNDRILLING USING FEED FORCE AND TORQUE MEASUREMENTS , 2007 .